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Site Reliability Engineer IIIApplylocations: Belfast - Millennium Housetime type: Full timeposted on: Posted Todayjob requisition id: 33993 Site Reliability Engineer III/SRE III (Tue - Sat) CME Group is seeking a Site Reliability Engineer III (Tue - Sat) to take a key role in building, operating, and scaling systems in our Markets portfolio. As an SRE III, you will apply your experience to the complex challenges of the CME Globex trading platform, where our systems deliver an exceptional combination of low-latency performance and rock-solid reliability .You will work with senior engineers on complex projects, take ownership of key reliability initiatives, and act as a mentor to junior colleagues, helping to shape the team's technical direction. Key Responsibilities Own Observability: Design, build, and refine monitoring, alerting, and observability solutions. Drive the continuous improvement of our SLIs & SLOs to enable faster issue detection and resolution. Drive Reliability Projects: Take ownership of reliability-focused projects from design to implementation, collaborating with product teams to ensure new features are scalable, resilient, and safe. Lead Technical Solutions: Lead technical discussions for your work, presenting solution options and proposals with clear trade-offs. Automate Intelligently: Proactively identify and eliminate toil through robust automation, improving both system reliability and team velocity. Manage Incidents: Take a leading role in incident response, owning the resolution of significant incidents, ensuring rapid system recovery, and driving meaningful action from blameless post-mortems. Mentor & Coach: Act as a technical mentor and point of escalation for L1 and L2 SREs, fostering their growth through code reviews and paired work. Architect for the Future: Contribute your own ideas to the product backlog and play an active role in the architectural design for the migration to Google Cloud Platform (GCP). What We're Looking For 3-5+ years of professional experience in a Site Reliability, DevOps, Software, or Systems Engineering role. Strong, hands-on experience administering and troubleshooting Linux-based production systems. Proficient programming skills in a language like Python or Go, with a track record of automating complex operational tasks. Proven ability to lead technical initiatives and solve complex problems with a high degree of autonomy. Excellent communication skills, with the ability to articulate complex technical concepts to diverse audiences. A proactive and ownership-oriented mindset. Desirable Skills Cloud Platforms: Deep experience with Google Cloud Platform (GCP), especially GCE, GKE, and cloud networking. Monitoring Tools: Expertise in designing and managing monitoring stacks (e.g., Prometheus, Grafana, OpenTelemetry). Distributed Systems: Strong practical knowledge of building and maintaining large-scale distributed systems. Containerisation: Advanced experience with Kubernetes and Docker in a production environment. Networking: Solid understanding of networking protocols (HTTP, TCP/UDP, IP) and network architecture. Domain Knowledge: Experience in financial markets, low-latency systems, or with message-oriented middleware. Why CME Group Be part of a global leader in financial services technology. Work on cutting-edge technology in a collaborative and innovative culture. Receive a competitive compensation and benefits package. Grow your career in SRE with an organisation committed to this modern approach.Join CME Group and play a crucial role in ensuring the stability and performance of our global trading applications. Apply now to be a part of our dynamic SRE team! Company Benefits: Bonus Programme Generous shift allowance Equity Programme Employee Stock Purchase Plan (ESPP) Private Medical and Dental coverage Mental Health Benefit Programme Group Pension Plan Income Protection Life Assurance Cycle To Work EV Car Benefit Scheme Gym Membership Family Leave Education Assistance - MBA/Advanced Degree/Bachelor Degree Ongoing Employee Development Training/Certification Hybrid Working

Role Overview We are seeking a Senior Python Software Engineer/Quantitative Developer to take a leading role in the design, development, and evolution of the client's core analytics and trading platforms. The role is explicitly Python centric, with a strong focus on software architecture, code quality, and reliability across complex quantitative systems. You will work embedded within the analytics and trading function, partnering closely with quantitative analysts and data scientists to turn research models into robust, production grade Python systems. The role is intended to complement a mathematically strong team by bringing deeper software engineering rigour, helping scale both the codebase and the organisation as trading activity grows. Responsibilities Design, implement, and maintain production grade Python systems supporting: Power price forecasting pipelines Optimisation and dispatch of flexible assets (BESS, gas, hydro) Trading, simulation, and backtesting environments Establish and uphold strong Python engineering standards across the analytics codebase, including: Clear package and module structure Well defined interfaces between models, data, and execution layers Consistent error handling, logging, and observability Lead improvements in test coverage and reliability, spanning unit, integration, and regression testing for quantitative models Proactively identify, prioritise, and shape platform enhancements that most effectively support the trading roadmap, balancing urgency, technical debt, and cross team impact in close collaboration with analytics, trading, and product stakeholders Work closely with quants to refactor research driven Python code into maintainable, extensible components without compromising model fidelity Optimise performance critical Python code paths, including efficient use of vectorisation, parallelism, and memory management Collaborate with DevOps and Data Engineering on deployment, CI/CD, and runtime monitoring of Python services and batch workflows Provide technical leadership and mentorship on Python best practices, raising the overall engineering maturity of the analytics team Required Skills and Experience Strong professional experience as a Python software engineer, working on large or long lived codebases Deep understanding of Python for production use, including: Packaging, dependency management, and environment isolation Testing frameworks and test design for numerical code Profiling and performance optimisation in Python Solid grounding in software engineering fundamentals, including: System and API design Code readability, maintainability, and extensibility Version control and collaborative development workflows Experience working in quantitative, scientific, or data intensive domains Ability to operate comfortably at the interface between research, engineering, and commercial use cases Desirable Experience Experience in energy markets, commodity trading, or financial systems Familiarity with optimisation libraries, numerical methods, or simulation frameworks in Python Exposure to containerisation, cloud native Python deployments, or distributed compute patterns Prior experience modernising or hardening research oriented Python codebases Personal Attributes Strong engineering judgement with a pragmatic approach to complexity Comfortable taking ownership of critical systems used in live decision making Motivated by applying high quality software engineering to problems with tangible commercial and system wide impact Able to challenge constructively and influence technical direction without over engineering

Since being founded in 2018, Copper has been building the standard for institutional digital asset infrastructure with a focus on custody, collateral management, and prime services. Led by Amar Kuchinad, Copper's Global CEO, the firm provides a comprehensive suite of custody, trading and settlement solutions that reduce counterparty risk and bring greater capital and operational efficiency to digital asset markets. At the heart of Copper's offering is Multi-Party Computation (MPC) technology - the gold standard in secure custody. Copper's multi award winning custody system is unique in that it can be connected to centralised exchanges, DeFi applications and even staking pools without the assets leaving the custody. Built on top of this state of the art custody, ClearLoop is the first solution in the market that overcomes a growing industry challenge; counterparty risk with exchanges. This solution underpins a full prime services offering, connecting global exchanges, and enabling customers to trade and settle directly from the safety of their MPC secured wallets. By reducing settlement time for transfers to a few milliseconds (without blockchain network dependency) and offering enhanced security measures, ClearLoop is rapidly reshaping the way asset managers trade and manage capital. In addition to industry leading security certifications, Copper has one of the strongest insurance coverages in the industry from an A+ rated insurer, positioning the firm as the partner of choice for institutions seeking to safeguard their assets. Department/Team Purpose The Engineering department is the backbone of Copper; entrusted with the critical responsibility of building and securing the infrastructure that safeguards billions of dollars in digital assets. We operate at the intersection of traditional institutional finance and decentralized blockchain technology. We believe the best infrastructure comes from curious minds working openly together. Our engineering organisation brings together people with diverse backgrounds and experiences who genuinely enjoy solving hard problems. We foster a blame free, intellectually honest environment where you're encouraged to take thoughtful risks and think big. You'll have the autonomy to own meaningful projects while gaining the support you need to grow your skills and advance your career. Role Purpose We're looking for a Senior DevOps engineer at the intersection of software development and platform engineering. In this role, your focus will be enabling fast, reliable, and secure delivery of our systems, whilst continuously improving how our infrastructure is built and operated, including our blockchain environments. Day to day, you'll tackle platform and deployment challenges through pragmatic engineering and automation. You'll build and operate scalable, self service infrastructure, CI/CD pipelines, and blockchain platforms, including node provisioning, network deployment, and lifecycle management. You'll optimise build and release pipelines, improve system resilience, and ensure 'traditional' and blockchain infrastructure can scale with the needs of the business. You will collaborate closely with engineering and SRE teams, focusing on infrastructure as code, developer experience, and operational scalability across the engineering organisation, with ownership of the reliability and performance of blockchain nodes and supporting systems. Key Responsibilities Building a fault tolerant, geographically distributed infrastructure: support of multiple data centres, providing replication, sharding, auto balancing and failover. Participating in deployment of services with strict availability requirements on a large scale environment and working together with other Engineers to ensure our systems meet current and future demand. Develop and maintain code for automated infrastructure management (DevOps, Infrastructure as Code) with the use of Ansible and Terraform. Working collaboratively with the Backend Engineering team to increase our resilience through insightful systems and application metrics. Improving our CI/CD pipeline to provide new integration vectors. Building and maintaining infrastructure for its own fleet of blockchain nodes (>25 layer 1 protocols now, and more to come). On Call support to ensure 24/7 availability of all systems. Skills and Experience Essential 5+ year's experience as a DevOps Engineer operating production grade infrastructure. Hands on experience running and maintaining blockchain infrastructure (e.g. node deployment, syncing, upgrades, monitoring, and troubleshooting). Strong experience with Infrastructure as Code (e.g. Terraform, CloudFormation) and automated environment provisioning. Strong experience with containerisation and Kubernetes, including production operations and cluster management; EKS preferred. Experience building and operating CI/CD pipelines using GitHub Actions and deployment tools such as ArgoCD. Solid understanding of networking fundamentals (VPCs, routing, load balancing, DNS, firewalls). Experience implementing and operating secure systems (IAM, secrets management, network security controls, vulnerability management). Proficiency with at least one development language (e.g., bash, Python, Go). Strong troubleshooting skills across distributed systems and production environments. Strong problem solving and troubleshooting abilities. Excellent communication and collaboration abilities. Desirable Experience working within crypto organisation. Experience in Financial Services. Benefits Paid Time Off - A minimum of 35 days of paid time off per year, inclusive of annual leave and public holidays. Employees also receive one additional day of annual leave for each year of service. Comprehensive Medical Insurance - Inclusive of dental, optical, audiology, and mental health coverage, with medical history disregarded. Life Insurance. Enhanced Pension Contributions - Includes an enhanced employer matching contribution. 24/7 Employee Assistance Programme (EAP). Copper is an equal opportunity employer. We embrace diversity and equal opportunities in a serious way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better our work will be. So, bring us your experience, perspectives, and skills. It is in our differences that we will continue to grow and ensure Copper is transforming how institutional investors engage with digital assets. Copper is a Disability Confident Employer, please let us know if you have a disability. If you require us to provide any assistance during the recruitment process, then we would ask you to highlight this to us and we will be happy to accommodate.

Since being founded in 2018, Copper has been building the standard for institutional digital asset infrastructure with a focus on custody, collateral management, and prime services. Led by Amar Kuchinad, Copper's Global CEO, the firm provides a comprehensive suite of custody, trading and settlement solutions that reduce counterparty risk and bring greater capital and operational efficiency to digital asset markets. At the heart of Copper's offering is Multi-Party Computation (MPC) technology - the gold standard in secure custody. Copper's multi-award winning custody system is unique in that it can be connected to centralised exchanges, DeFi applications and even staking pools without the assets leaving the custody. Built on top of this state of the art custody, ClearLoop is the first solution in the market that overcomes a growing industry challenge; counterparty risk with exchanges. This solution underpins a full prime services offering, connecting global exchanges, and enabling customers to trade and settle directly from the safety of their MPC secured wallets. By reducing settlement time for transfers to a few milliseconds (without blockchain network dependency) and offering enhanced security measures, ClearLoop is rapidly reshaping the way asset managers trade and manage capital. In addition to industry leading security certifications, Copper has one of the strongest insurance coverages in the industry from an A+ rated insurer, positioning the firm as the partner of choice for institutions seeking to safeguard their assets. Department/Team Purpose The Engineering department is the backbone of Copper; entrusted with the critical responsibility of building and securing the infrastructure that safeguards billions of dollars in digital assets. We operate at the intersection of traditional institutional finance and decentralized blockchain technology. We believe the best infrastructure comes from curious minds working openly together. Our engineering organisation brings together people with diverse backgrounds and experiences who genuinely enjoy solving hard problems. We foster a blame free, intellectually honest environment where you're encouraged to take thoughtful risks and think big. You'll have the autonomy to own meaningful projects while gaining the support you need to grow your skills and advance your career. Role Purpose We're looking for a Senior DevOps engineer at the intersection of software development and platform engineering. In this role, your focus will be enabling fast, reliable, and secure delivery of our systems, whilst continuously improving how our infrastructure is built and operated, including our blockchain environments. Day to day, you'll tackle platform and deployment challenges through pragmatic engineering and automation. You'll build and operate scalable, self service infrastructure, CI/CD pipelines, and blockchain platforms, including node provisioning, network deployment, and lifecycle management. You'll optimise build and release pipelines, improve system resilience, and ensure 'traditional' and blockchain infrastructure can scale with the needs of the business. You will collaborate closely with engineering and SRE teams, focusing on infrastructure as code, developer experience, and operational scalability across the engineering organisation, with ownership of the reliability and performance of blockchain nodes and supporting systems. Key Responsibilities Building a fault tolerant, geographically distributed infrastructure: support of multiple data centres, providing replication, sharding, auto balancing and failover. Participating in deployment of services with strict availability requirements on a large scale environment and working together with other Engineers to ensure our systems meet current and future demand. Develop and maintain code for automated infrastructure management (DevOps, Infrastructure as Code) with the use of Ansible and Terraform. Working collaboratively with the Backend Engineering team to increase our resilience through insightful systems and application metrics. Improving our CI/CD pipeline to provide new integration vectors. Building and maintaining infrastructure for its own fleet of blockchain nodes (>25 layer 1 protocols now, and more to come) On Call support to ensure 24/7 availability of all systems. Skills and Experience 5+ year's experience as a DevOps Engineer operating production grade infrastructure. Hands on experience running and maintaining blockchain infrastructure (e.g. node deployment, syncing, upgrades, monitoring, and troubleshooting). Strong experience with Infrastructure as Code (e.g. Terraform, CloudFormation) and automated environment provisioning. Strong experience with containerisation and Kubernetes, including production operations and cluster management; EKS preferred. Experience building and operating CI/CD pipelines using GitHub Actions and deployment tools such as ArgoCD. Solid understanding of networking fundamentals (VPCs, routing, load balancing, DNS, firewalls). Experience implementing and operating secure systems (IAM, secrets management, network security controls, vulnerability management). Proficiency with at least one development language (e.g., bash, Python, Go). Strong troubleshooting skills across distributed systems and production environments. Strong problem solving and troubleshooting abilities. Excellent communication and collaboration abilities. Experience working within crypto organisation. Experience in Financial Services. Why Copper? At Copper, we keep innovation, openness, and curiosity at the centre of everything we do. Here, bold ideas get the spotlight, learning is constant, and diversity shapes our team from the ground up. Jump into a fast moving, dynamic team that loves a challenge and knows how to have fun along the way. Collaboration is just as important as results-you'll be surrounded by smart, driven colleagues in London and across our APAC, Switzerland, UAE, and US offices. Hybrid working model - we believe in the value of bringing people together and at the same time we embrace the adaptability of flexibly working. Diversity and inclusion matter to us - they're woven into Copper life. From employee led groups like Women at Copper to a committee focused on community and wellbeing, you'll have a network that supports you from day one. Everyone's voice matters. If you're looking to ramp up your career, or keen to do something new in your field, with us, you'll keep moving forward. Ready to make your mark, keep growing, and join a supportive, dynamic team? Copper's the place. The interview process at Copper Our interview process is designed to be thoughtful, efficient, and engaging. While specific steps may vary slightly depending on the role, the typical journey includes: Initial Screening A brief conversation with our Talent Acquisition team to explore your background, motivations, and alignment with the role. Technical Interview A virtual session conducted via Microsoft Teams, where you'll engage with team members to discuss relevant skills, problem solving approaches, and technical experience. In Person Interview A conversation focused on team dynamics, collaboration style, and any final technical questions. This may be with cross functional peers or leadership. Additional steps may be added based on the role's complexity or seniority. We aim to keep the process transparent and respectful of your time. Benefits Paid Time Off - A minimum of 35 days of paid time off per year, inclusive of annual leave and public holidays. Employees also receive one additional day of annual leave for each year of service. Comprehensive Medical Insurance - Inclusive of dental, optical, audiology, and mental health coverage, with medical history disregarded. Life Insurance Enhanced Pension Contributions - Includes an enhanced employer matching contribution. 24/7 Employee Assistance Programme (EAP) Copper is an equal opportunity employer. We embrace diversity and equal opportunities in a serious way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better our work will be. So, bring us your experience, perspectives, and skills. It is in our differences that we will continue to grow and ensure Copper is transforming how institutional investors engage with digital assets. Copper is a Disability Confident Employer, please let us know if you have a disability. If you require us to provide any assistance during the recruitment process, then we would ask you to highlight this to us and we will be happy to accommodate.

Senior DevOps Engineer Europe Senior DevOps Engineer Fully Remote Web3 / DeFi Infrastructure Revive Recruitment is partnering with a high-growth, product-led Web3 company building next-generation decentralised trading infrastructure. This is a senior, hands on DevOps role with real ownership over mission critical, low latency systems operating at scale. If you love automation, reliability engineering, security and performance and want to help shape the future of decentralised finance, this one's for you. What you'll do Design, build and maintain cloud native infrastructure using Infrastructure as Code (Terraform / Pulumi) Own and continuously improve CI/CD pipelines across backend, frontend and smart contract codebases Implement monitoring, observability and alerting to maximise uptime and catch issues early Optimise infrastructure for latency sensitive, high throughput workloads Lead on security best practices across cloud, CI/CD and runtime environments Define incident response, disaster recovery and post mortem processes Balance performance and redundancy with ongoing cost optimisation Document systems, create runbooks and mentor engineers, embedding a strong DevOps culture What you'll have 8+ years' experience in DevOps / SRE / Infrastructure Engineering Deep hands on experience with AWS and/or GCP Strong Infrastructure as Code background (Terraform, Pulumi or similar) Expert knowledge of Docker & Kubernetes Proven experience building and owning CI/CD pipelines Strong monitoring & observability experience (Prometheus, Grafana, ELK, OpenTelemetry) Solid security foundations (IAM, KMS, Vault, secrets management) Scripting skills in Python, Bash, Go or similar Experience running production, high availability systems Nice to have Web3 / blockchain infrastructure or node operations Low latency trading or real time financial systems Service mesh (Istio / Linkerd) Zero downtime deployment strategies (blue green, canary) What's in it for you Fully remote role with a highly skilled, senior engineering team Real ownership over core infrastructure, not just keeping the lights on Exposure to cutting edge DeFi / Web3 technology Competitive salary plus token based equity (sliding scale) Opportunity to influence architecture, tooling and long term technical direction Fast moving, no bureaucracy environment with an ambitious roadmap Hiring process Hiring Manager interview Technical interview Deep dive technical interview Final interview with Founder / CEO Interested or know someone who'd be a great fit? Get in touch directly or tag them below - candidate referrals warmly welcomed.

Salary: £60,000-£80,000 (depending on experience) Location: UK-wide (Hybrid / On-site options available) Working Pattern: Full-time The Opportunity We're looking for talented and motivated Software Engineers to take on a range of cutting-edge engineering and technology roles. These roles offer the chance to work on meaningful, complex, and high-impact systems, contributing to the development of advanced digital technologies used across multiple sectors. You'll be part of collaborative teams solving challenging technical problems, applying modern software engineering practices, and exploring innovative solutions that make a real-world difference. Whether your expertise lies in real-time embedded systems, C++ or C# development, Python or Java applications, or cloud-based architectures, there are exciting opportunities to match your skills and ambitions. What You'll Do Design, develop, and maintain software components across a range of high-performance and innovative systems. Contribute to all phases of the software development lifecycle, from concept and design to testing and delivery. Work collaboratively with engineers from diverse technical disciplines to deliver creative and reliable solutions. Apply modern software practices such as Agile, DevOps, CI/CD, and automated testing. Embrace opportunities to learn new tools, technologies, and methodologies across different project environments. What We're Looking For We welcome applications from engineers with training or certification on software engineering concepts and proficient advanced experience in any of the following areas: Core Programming C, C++, C#, Java, Python or similar Embedded, real-time, or systems-level development Application or simulation software design Software Engineering Practices Version control with Git, GitHub, or GitLab CI/CD pipelines integrated through Azure DevOps or Terraform Agile or Scrum development environments Test-driven development and automation frameworks Containerisation & Infrastructure as Code: Docker, Terraform Web Frameworks: .NET / ASP.NET, React, Angular, Vue.js, Node.js, Spring Boot, Django, or Flask Scripting: Bash, Shell, or PowerShell Networking and data communications Integration between software and hardware systems Model-based or simulation-driven development If you're driven by solving engineering challenges, learning fast, and building technology that matters - we'd love to hear from you. What's on Offer Competitive salary and annual performance-related bonus Flexible and hybrid working options Additional leave and work-life balance initiatives Continuous training and career development support Modern facilities and collaborative project environments About the Opportunities These positions sit within teams supporting some of the UK's most advanced engineering and technology programmes - developing software, systems, data, and simulation capabilities that underpin next-generation intelligent, secure, and connected technologies. Engineers joining these projects contribute to high-impact, mission-critical work that combines technical innovation with real-world application. You'll be part of multidisciplinary teams solving complex engineering challenges, shaping the tools and systems that define the future of digital engineering. Each opportunity offers exposure to new technologies, diverse project environments, and long-term career development within forward-thinking organisations that invest in innovation, collaboration, and technical excellence. Interested? If you're a passionate Software Engineer looking for your next challenge, we'd love to hear from you. Apply today to explore opportunities that match your skills, ambitions, and curiosity. Apply Now Secure Consult is a trading brand of Latent Edge LTD, a company registered in England & Wales (Reg. No: ). Registered Address: 2 Maple Cottage, Free Street, Bishops Waltham, SO32 1EE

Team Overview XiP is building a next generation cross asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs. Our team owns multiple Java Spring Boot Services that execute, partition, and track quantitative risk graphs/trades in a distributed environment. These graphs can fail due to their complexity and our system must adapt quickly to these failures to provide a seamless experience for clients. XiP Compute Services are deployed onto OpenShift and Amazon's Elastic Kubernetes Service (EKS). An important initiative in 2025 will be onboarding Google's Kubernetes Engine to further expand our coverage. Our system scales on demand, and we can run up to tens of thousands of replicas of our services across all asset classes. Role Overview We are seeking a Senior Engineer to fill the role of "Applications Development Technology Lead Analyst" on the XiNG large scale distributed calculation platform (XiP). In this role you will design, build, and maintain the calculation engine at the heart of the XiP platform. This engine is responsible for c. 0.5 billion risk & suitability calculations at Citi every day. A single customer run compresses 17 million minutes of compute into a single 90 minute execution. Run on hundreds of thousands of pods across the entire XiP platform every day, this calculation engine is both highly performant and rapidly changing to support new scenarios, technologies, and infrastructure. As an engineer working on the calculation engine, you will work closely with software engineers, DevOps, and our customers to ensure reliable, secure, and scalable operations of our platform. Responsibilities Take part of the shared responsibility for the long term strategic direction of the XiP Calculation Engine: Apply your experience and skills to develop the future versions of the calculation engine. This means making it faster, utilizing resources better, and scaling to even greater sizes. This means adding new features without impacting performance of the platform in an undesirable manner - small changes multiplied by millions of calculations have a high cost. This means solving hard problems like transferring small amounts of data to a huge number of machines. Serve as advisor or coach to team members, allocating and overseeing work: Mentor and guide mid level developers, providing technical advice, code reviews, and career development support. Allocate tasks based on skill sets and project priorities, ensuring balanced workloads and timely delivery. Foster a collaborative and growth oriented team environment, encouraging best practices and continuous learning. Implement changes and improvements to Citi's Risk Calculation Engine, including analyzing and designing improvements to the distribution mechanisms of the engine which regularly parallelises 250,000 hours of compute into a single 90 minute execution: Lead the design, development, and implementation of enhancements to the Risk Calculation Engine, focusing on optimizing its distribution mechanisms. Analyze current parallelisation strategies and identify opportunities to further improve efficiency, scalability, and throughput. Operationally support the optimisation of Risk calculations by examining and providing SME level insight into the distributed execution of extremely large calculations: Monitor and analyse the distributed execution of large scale risk calculations, identifying performance bottlenecks and inefficiencies. Provide subject matter expertise to guide operational improvements, leveraging deep technical knowledge to recommend and implement optimisations that enhance calculation speed and resource utilisation. Plan, coordinate, and execute strategic changes to the engine to reach the next scaling milestone: Develop and manage strategic initiatives aimed at scaling the Risk Calculation Engine to meet future business demands. Coordinate with stakeholders to ensure that all scaling efforts are aligned with customer needs. Provide specialised customer support to optimise and improve large, distributed calculations: Act as a primary point of contact for clients to address issues and optimise inefficiencies that arise during distributed workload execution. Qualifications Multiple years professional software development experience with Java. Solid experience with Java frameworks (e.g., Spring, Spring Boot, Quarkus). Experience designing, building, and maintaining large scale, distributed systems. Experience with RESTful API design and implementation. Strong understanding of object oriented programming and design patterns. Exposure to NoSQL databases (e.g., MongoDB, Cassandra) is a plus. Exposure to cloud platforms (e.g., AWS, Azure, GCP) and containerisation (e.g., Docker, Kubernetes) is desirable. Experience with unit testing, integration testing, and test automation frameworks (e.g., JUnit, Mockito). Experience working in Agile/Scrum development environments. Practical experience with Python for scripting, automation, or data processing tasks. Experience with CI/CD pipelines and DevOps practices is a plus. Education Bachelor's or Master's degree in Computer Science, Engineering, or a related field. Job Family Group: Technology Job Family: Applications Development Time Type: Full time Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, colour, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi's EEO Policy Statement and the Know Your Rights poster.

Team Overview XiP is building a next-generation cross-asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs. Our team owns multiple Java Spring Boot Services that execute, partition, and track quantitative risk graphs/trades in a distributed environment. These graphs can fail due to their complexity and our system must adapt quickly to these failures to provide a seamless experience for clients. XiP Compute Services are deployed onto OpenShift and Amazon's Elastic Kubernetes Service (EKS). An important initiative in 2025 will be onboarding Google's Kubernetes Engine to further expand our coverage. Our system scales on-demand, and we can run up to tens of thousands of replicas of our services across all asset classes. Role Overview We are seeking a Senior Engineer to fill the role of 'Applications Development Technology Lead Analyst' on the XiNG large scale distributed calculation platform (XiP). In this role you will design, build, and maintain the calculation engine at the heart of the XiP platform. This engine is responsible for c. 0.5 billion risk & suitability calculations at Citi every day. A single customer run compresses 17 million minutes of compute into a single 90 minute execution. Run on hundreds of thousands of pods across the entire XiP platform every day this calculation engine is both highly performant and rapidly changing to support new scenarios, technologies, and infrastructure. As an engineer working on the calculation engine. You will work closely with software engineers, DevOps, and our customers to ensure reliable, secure, and scalable operations of our platform. Responsibilities Take part in the shared responsibility for the long term strategic direction of the XiP Calculation Engine: Apply your experience and skills to develop future versions of the engine, making it faster, utilizing resources better, and scaling to even greater sizes. Add new features without impacting performance of the platform in undesirable ways, taking care that small changes multiplied by millions of calculations have high cost. Solve hard problems such as transferring small amounts of data to a huge number of machines. Serve as advisor or coach to team members, allocating and overseeing work: Mentor and guide mid level developers, providing technical advice, code reviews, and career development support; allocate tasks based on skill sets and project priorities, ensuring balanced workloads and timely delivery; foster a collaborative and growth oriented team environment, encouraging best practices and continuous learning. Implement changes and improvements to Citi's Risk Calculation Engine, including analyzing and designing improvements to the distribution mechanisms of the engine which regularly parallelizes 250,000 hours of compute into a single 90 minute execution: Lead design, development, and implementation of enhancements, focusing on optimizing distribution mechanisms, analyze current parallelization strategies, and identify opportunities to further improve efficiency, scalability, and throughput. Operationally support the optimization of risk calculations by examining and providing SME level insight into the distributed execution of extremely large calculations: Monitor and analyze distributed execution of large scale risk calculations, identify performance bottlenecks and inefficiencies, and provide subject matter expertise to guide operational improvements, leveraging deep technical knowledge to recommend and implement optimizations that enhance calculation speed and resource utilization. Plan, coordinate, and execute strategic changes to the engine to reach the next scaling milestone: Develop and manage strategic initiatives aimed at scaling the Risk Calculation Engine to meet future business demands; coordinate with stakeholders to ensure that scaling efforts align with customer needs. Provide specialized customer support to optimize and improve large, distributed calculations: Act as a primary point of contact for clients to address issues and optimize inefficiencies that arise during distributed workload execution. Qualifications Multiple years professional software development experience with Java. Solid experience with Java frameworks (e.g., Spring, Spring Boot, Quarkus). Experience designing, building, and maintaining large scale, distributed systems. Experience with RESTful API design and implementation. Strong understanding of object oriented programming and design patterns. Exposure to NoSQL databases (e.g., MongoDB, Cassandra) is a plus. Exposure to cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes) is desirable. Experience with unit testing, integration testing, and test automation frameworks (JUnit, Mockito). Experience working in Agile/Scrum development environments. Practical experience with Python for scripting, automation, or data processing tasks. Experience with CI/CD pipelines and DevOps practices is a plus. Education Bachelor's or Master's degree in Computer Science, Engineering, or a related field. Equal Opportunity Statement Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity, review Accessibility at Citi. View Citi's EEO Policy Statement and the Know Your Rights poster.

Senior Data Engineer About Keyrock Since our beginnings in 2017, we've grown to be a leading change-maker in the digital asset space, renowned for our partnerships and innovation. Today, we partner with over 250 team members around the world. Our diverse team hails from 42 nationalities, with backgrounds ranging from self-taught DeFi natives to PhDs. Predominantly remote, we have hubs in London, Brussels, and Singapore, and host regular online and offline hangouts to keep the crew tight. We are trading on more than 80 trading venues, and working with a wide array of asset issuers. As a well-established market maker, our distinctive expertise led us to expand rapidly. Today, our services span market making, options trading, high-frequency trading, OTC, and DeFi trading desks. But we're more than a service provider. We're an initiator. We're pioneers in adopting the Rust Development language for our algorithmic trading, and champions of its use in the industry. We support the growth of Web3 startups through our Accelerator Program. We upgrade ecosystems by injecting liquidity into promising DeFi, RWA, and NFT protocols. And we push the industry's progress with our research and governance initiatives. At Keyrock, we're not just envisioning the future of digital assets. We're actively building it. About the team and why the role exists The Central Data Team (CDT) is only a few months old, but data has been Keyrock's lifeblood since day one. We're now building the Keyrock Data Platform to give Keyrockers, and the AI agents working alongside them, the data and context they need to act fast and autonomously within agreed boundaries and aligned with our shared goals. Doing that means taking data from across the company and making sense of it in real time for all the functions that depend on it: trading desks, wealth and asset management, product, risk, finance, compliance, and research to name a few. You'd be one of the early hires in CDT and we expect you to contribute to most of the bigger decisions and build work. The standards we settle on and the way the team ends up working are still open. What You'll Do Build streaming and batch pipelines that ingest, normalise, and distribute market, trading, and portfolio data, resilient to feed and exchange failures. Build the self-serve tooling (SDKs, patterns, templates, AI agents) so other teams publish, consume, and build on data products without waiting on us. Own data contracts and schema evolution. Keep schema changes from turning into multi-team coordination events. Design the lakehouse and time-series layer around consumer query patterns. Build and evolve the Data Governance and Data Quality Framework: stale-feed detection, schema validation, range checks, idempotent writes, lineage, ownership, self-healing. Build the derived analytics the business runs on: cross-exchange spreads, VWAP at depth, order book microstructure for the desks; portfolio views, exposure, performance for wealth and asset management. Make observability, cost, and performance first-class from day one. Treat infrastructure as code (Docker, Terraform, CI/CD) alongside our Central Infrastructure Team. Work in the open: write things down, partner closely with Architecture, Infrastructure, Platform, and the rest of the teams. What We're Looking For Tools matter less to us than how you think about problems. That said, here's the shape of the person we have in mind. Engineering Craft 8+ years of building production data systems that other people rely on. Strong proficiency in Python and SQL: not just being able to write a query, but being able to reason about what the engine is doing with it. Code that's easy for someone else to read, test, and delete later. Strong understanding of data modelling for both streaming and analytical workloads. Efficiency, quality, idempotency, and observability are taken seriously by default. Systems Design You've designed and operated streaming systems on Kafka, Redpanda, MSK, or Kinesis, and you have opinions about partitioning, consumer groups, offsets, and schema registries. You've used a time-series store in production (ClickHouse ideally; TimescaleDB, QuestDB, or similar are fine too) and can talk about table design as a function of query patterns. You've worked with a lakehouse architecture and reason about table layout, partitioning, and compaction as design choices that shape query performance and storage cost. You build for self-healing and idempotency. Reprocessing is safe, retries don't double-write, and the system recovers without a human in the loop. Operational Readiness Docker, Terraform, and CI/CD are how you work, not a separate "DevOps" thing. You think about cost and performance early. You instrument as you build: logs, metrics, and traces are part of the system from day one. You design for data quality and governance up front covering contracts, validation, lineage, and ownership How You Think and Work You reason from first principles when a problem is new, stay pragmatic when it isn't, and update your view when you learn more. You treat the trading desks, wealth and asset management, product, risk, finance, compliance, and research as customers of what you build, and communicate with them that way. You optimise for outcomes over output. A smaller, simpler thing that ships and works beats a bigger thing that doesn't. You take ownership end-to-end: design, ship, operate, improve. You say what you think including when it's an unpopular take. You change your mind when the argument is better. You make the people around you better. Reviews are real, juniors grow from working with you, and peers want to work with you again. You're curious about how markets work. Data engineering on its own won't keep you interested here. You're honest about what you know and what you don't, and quick to close the gap. You understand financial market data: order books, trades, reference data, portfolios, exposures. Crypto, TradFi, or both are a strong plus. Nice to Have Lakehouse experience with Apache Iceberg or Delta Lake. Familiarity with DataHub or similar metadata/lineage platforms. Rust. Some of our performance-critical services are written in it. Interest is welcome; fluency isn't required. What You'll Get A from-scratch mandate. You'll be among the first hires in CDT, and the platform, the standards, and the team culture are yours to shape with us. Strong partners. Close working relationships with Architecture, Infrastructure, Platform, and the desks themselves. You won't be building data in a vacuum. Autonomy on how you work. Flexible hours, remote-first, business-hours on-call shared across the team. A competitive salary package, with various benefits. A team that likes each other. Regular online get-togethers and a yearly onsite where everyone's in the same room. Our Recruitment Process We're after those with the right skills and a conscious choice to join our field. The perfect fit? Someone who's driven, collaborative, acts with ownership and delivers solid, scalable outcomes. As an employer we are committed to building a positive and collaborative work environment. We welcome employees of all backgrounds, and hire, reward and promote entirely based on merit and performance. Due to the nature of our business and external requirements, we perform background checks on all potential employees, passing which is a prerequisite to join Key

Site Reliability Engineer III (Tue - Sat)Applylocations: Belfast - Millennium Housetime type: Full timeposted on: Posted Todayjob requisition id: 34509 Title: Site Reliability Engineer III/SRE III (Tue - Sat) Intro: CME Group is seeking a Site Reliability Engineer III (Tue - Sat) to take a key role in building, operating, and scaling systems in our Markets portfolio. As an SRE III, you will apply your experience to the complex challenges of the CME Globex trading platform, where our systems deliver an exceptional combination of low-latency performance and rock-solid reliability .You will work with senior engineers on complex projects, take ownership of key reliability initiatives, and act as a mentor to junior colleagues, helping to shape the team's technical direction. Key Responsibilities Own Observability: Design, build, and refine monitoring, alerting, and observability solutions. Drive the continuous improvement of our SLIs & SLOs to enable faster issue detection and resolution. Drive Reliability Projects: Take ownership of reliability-focused projects from design to implementation, collaborating with product teams to ensure new features are scalable, resilient, and safe. Lead Technical Solutions: Lead technical discussions for your work, presenting solution options and proposals with clear trade-offs. Automate Intelligently: Proactively identify and eliminate toil through robust automation, improving both system reliability and team velocity. Manage Incidents: Take a leading role in incident response, owning the resolution of significant incidents, ensuring rapid system recovery, and driving meaningful action from blameless post-mortems. Mentor & Coach: Act as a technical mentor and point of escalation for L1 and L2 SREs, fostering their growth through code reviews and paired work. Architect for the Future: Contribute your own ideas to the product backlog and play an active role in the architectural design for the migration to Google Cloud Platform (GCP). What We're Looking For 3-5+ years of professional experience in a Site Reliability, DevOps, Software, or Systems Engineering role. Strong, hands-on experience administering and troubleshooting Linux-based production systems. Proficient programming skills in a language like Python or Go, with a track record of automating complex operational tasks. Proven ability to lead technical initiatives and solve complex problems with a high degree of autonomy. Excellent communication skills, with the ability to articulate complex technical concepts to diverse audiences. A proactive and ownership-oriented mindset. Desirable Skills Cloud Platforms: Deep experience with Google Cloud Platform (GCP), especially GCE, GKE, and cloud networking. Monitoring Tools: Expertise in designing and managing monitoring stacks (e.g., Prometheus, Grafana, OpenTelemetry). Distributed Systems: Strong practical knowledge of building and maintaining large-scale distributed systems. Containerisation: Advanced experience with Kubernetes and Docker in a production environment. Networking: Solid understanding of networking protocols (HTTP, TCP/UDP, IP) and network architecture. Domain Knowledge: Experience in financial markets, low-latency systems, or with message-oriented middleware. Why CME Group Be part of a global leader in financial services technology. Work on cutting-edge technology in a collaborative and innovative culture. Receive a competitive compensation and benefits package. Grow your career in SRE with an organisation committed to this modern approach.Join CME Group and play a crucial role in ensuring the stability and performance of our global trading applications. Apply now to be a part of our dynamic SRE team! Company Benefits: Bonus Programme Generous shift allowance Equity Programme Employee Stock Purchase Plan (ESPP) Private Medical and Dental coverage Mental Health Benefit Programme Group Pension Plan Income Protection Life Assurance Cycle To Work EV Car Benefit Scheme Gym Membership Family Leave Education Assistance - MBA/Advanced Degree/Bachelor Degree Ongoing Employee Development Training/Certification Hybrid CME Group: Where Futures are Made CME Group is the world's leading derivatives marketplace. But who we are goes deeper than that. Here, you can impact markets worldwide. Transform industries. And build a career by shaping tomorrow. We invest in your success and you own it - all while working alongside a team of leading experts who inspire you in ways big and small. Problem solvers, difference makers, trailblazers. Those are our people. And we're looking for more.At CME Group, we embrace our employees' unique experiences and skills to ensure that everyone's perspectives are acknowledged and valued. As an equal-opportunity employer, we consider all potential employees without regard to any protected characteristic. Important Notice: Recruitment fraud is on the rise, with scammers using misleading promises of job offers and interviews to solicit money and personal information from job seekers. CME Group adheres to established procedures designed to maintain trust, confidence and security throughout our recruitment process. Learn more here.

A leading trading firm in Greater London is seeking a dynamic software engineer to enhance their quantitative trading teams. The role involves ensuring production servers are configured properly, writing and maintaining python infrastructure, and addressing trading operational issues. Ideal candidates will possess strong Python and Linux skills, be self-directed, and excited about taking ownership of critical systems. This position offers exposure to innovative technologies in a fast-paced environment and competitive benefits.

Castleton Commodities International () is redefining how data and technology drive the future of global energy trading. Our Data Science & Technology team is at the forefront of this evolution, designing powerful systems and innovative tools that help our front-office teams understand market behavior, forecast price movements, and manage risk more effectively. With a commitment to excellence and a modern, open-source technology stack, we solve complex, high-impact challenges at scale. From cloud-native infrastructure and machine learning platforms to real-time analytics, custom APIs, and internal libraries, we build the tools that give CCI a competitive edge in the global commodities markets. If you're looking to build cutting-edge solutions in a high-performance trading environment, we'd love to hear from you. Apply today and take the next step in your technology career at CCI! Responsibilities Partner directly with commercial trading teams to engineer and optimize trading processes and analytical models. Build and maintain Python-based services and APIs using modern frameworks and best-in-class design patterns. Design and develop solutions to support supply and demand models, market data analysis, and position management. Design cloud-native tools that integrate seamlessly into our Front Office platform, including visualization and analytics interfaces. Qualifications Bachelor's or Master's degree in Computer Science or a related STEM field. Strong professional experience in any programming language; Python strongly preferred. Prior experience developing front-end applications utilizing React, Angular, TypeScript is strongly preferred. Proficiency in SQL and relational database technologies. Familiarity with modern DevOps practices. Exposure to AWS and Snowflake technologies is highly desirable. Prior experience building or working on back testing engines and systematic trading is a plus. Prior experience in energy or commodities trading is strongly preferred. Ability to communicate effectively across technical and non-technical audiences. Strong attention to detail, problem-solving skills, and a passion for technology innovation. Ability to work effectively in a fast-paced, dynamic and high-intensity environment including an open-floor plan, with timely responsiveness and the ability to work beyond normal business hours when required. Employee Programs & Benefits CCI offers competitive benefits and programs to support our employees, their families and local communities. Competitive comprehensive medical, dental, retirement and life insurance benefits. Employee assistance & wellness programs. Parental and family leave policies. CCI in the Community: Each office has a Charity Committee and as a part of this program employees are allocated 2 days annually to volunteer at the selected charities. Charitable contribution match program. Tuition assistance & reimbursement. Quarterly Innovation & Collaboration Awards. Employee discount program, including access to fitness facilities. Competitive paid time off. Continued learning opportunities. Visit to learn more!