214 jobs found

The successful candidate will be responsible for building team resilience, overseeing day-to-day operations, and ensuring effective resource allocation across support demands. They must demonstrate strong business acumen and confidently collaborate with stakeholders during critical incidents. The role requires ownership of incident calls, leading them independently until Subject Matter Experts (SMEs) are engaged, and coordinating resolution efforts effectively.Flexibility is crucial, as the role includes out-of-office availability, including public holidays, and managing on-call responsibilities. The ideal candidate will possess excellent self-leadership, prioritization skills, and the ability to drive team performance while maintaining high service standards. Key Responsibilities Manage BAU support activities for Risk Intelligence applications during UTC morning hours Oversee shift planning to ensure 24x5 onsite coverage and 24x7 on-call support Provide out-of-hours and on-call support, including overnight production monitoring and weekend release support Ensure team adherence to performance metrics and promote continuous improvement Maintain effective documentation and processes to meet support and audit requirements Develop and regularly review 24-hour runbooks for each business line Lead incident management and resolution within the SRE team Deliver daily, weekly, and monthly status reports to stakeholders Collaborate with technical and business teams to manage stakeholder expectations People Leadership & Site Management Lead and mentor a team of SRE engineers, fostering a culture of ownership, learning, and engineering excellence Drive career development, performance management, and technical capability growth Partner with HR and Talent teams to support hiring and workforce planning Promote diversity, equity, inclusion (DEI), well-being, and psychological safety Represent the site in global SRE forums and contribute to offshore strategy and location planning Support Business Continuity Planning (BCP) and Disaster Recovery (DR) readiness Person Specification Education Bachelor's degree or equivalent experience or equivalent, preferably in a technical discipline Required Skills and Experience Experience with Linux (Amazon Linux AMI) and Windows Server 2019 in cloud environments Proficient in MySQL , PostgreSQL , MongoDB , and Aurora RDS Familiarity with AWS DocumentDB , DynamoDB , and SQLite Knowledge of MS SQL Always On Availability Groups and migration to Azure SQL Managed Instances Hands-on experience with AWS SQS and AWS SES Exposure to Amazon MSK , Coviant , and Cerberus Solid understanding of AWS S3 and EFS , including frontend integration Experience with Synapse Analytics and D365 Skilled in development using Spring Boot , Node.js , Python (Django, Flask, Apache Airflow) , Java (Java 11, Lambdas) , React , Angular , JavaScript , C# (.NET Framework) , and PHP Proficient in containerization and orchestration using Docker , Amazon ECS , EKS , and EC2 Additional Attributes 8+ years in production operations, SRE, or DevOps roles, with 3+ years in a leadership capacity Demonstrable experience managing SRE or production support teams in complex environments Strong collaboration and knowledge-sharing mentality Experience in investment banking and familiarity with financial products Excellent analytical and problem-solving skills Effective communicator with technical and business stakeholders, including senior managementLSEG is committed to encouraging a diverse, equitable, an inclusive work environment, ensuring equal opportunities for all employees, regardless of their background. We offer great employee benefits to make sure everyone performs to the best of their abilities.Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering. LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.Proud to share LSEG in the India is Great Place to Work certified (Jun '25 - Jun '26).Learn more about life and purpose of our company directly from India colleagues' video: Career Stage: Senior Associate London Stock Exchange Group (LSEG) Information: Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership , Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability

About us Iken is an independent software company based in central Bristol. We have an excellent reputation for both our efficiency and productivity boosting products and our approach to client care. The Iken team is made up of people who aspire to high performance and continuous improvement of themselves and the business - and that's what we're looking for from you. Our company values are at the heart of what all our employees do, and we want to work with people with whom these values resonate. Within your role you will be expected to work inter-dependently, taking responsibility for your own success and that of the company - whilst being part of a high challenge and high support company culture with a busy social life and corporate social responsibility agenda. About the role As a Web Developer at Iken, you'll be part of a multidisciplinary delivery team responsible for developing and enhancing our knowledge management application. Working within an Agile environment, you'll collaborate closely with the wider Delivery team to design, build and maintain high-quality software solutions. You'll contribute throughout the development lifecycle, from shaping technical solutions and planning through to implementation, testing, deployment and ongoing improvement. You will work across a modern Microsoft technology stack, building scalable web applications, APIs and services while helping to influence how we design, develop, and deliver our products. We encourage developers to explore new technologies, including AI-assisted development tools and automation, where they can deliver genuine value for our customers and teams. Key Responsibilities Working under the guidance of the Team Leader and Senior Developers to contribute to the production of specifications for strategic projects and new features to Iken's knowledge management and case management software Actively contributing to sprint planning by defining tasks need to implement features and scope tasks to ensure achievable sprint goals Delivering quality code to agreed coding standards, according to specifications and ready for the test team to test Demonstrating delivered functional or non-functional capabilities to the wider company and responding to queries Ensuring the architecture of the application is appropriate, deployment pipelines and build automation is functioning and non-functional requirements are met Keeping up to date with developments in software engineering practices, including AI-assisted development tools and automation techniques, to improve quality, productivity and delivery outcomes. Evaluate and responsibly utilise AI-assisted development tools where appropriate to improve development efficiency, code quality, testing and documentation. Contribute to scoping and planning of all development work as required Deliver stable, quality code to meet functional and non-functional requirements Maintain coding standards and best practice - in areas including source control, documentation and unit testing where appropriate Actively participate in daily scrums and other sprint meetings Proactively investigate and resolve bugs to maintain a stable codebase. This may include identifying and implementing work arounds as well as long term fixes. Support other team members, including participating in peer reviews Share good practice, technical knowledge and product knowledge to the wider delivery team, including developers, testers and product. What we're looking for: Proficient in: C#, JavaScript (including NodeJS), SQL Knowledge of Angular framework incl. the development of Angular applications Experience in developing and maintaining accessible, reusable front end web sites/applications in CSS, HTML, JavaScript, to meet WCAG AA requirements ASP.Net core (C#) including building and maintaining websites/ microservices / RESTful APIs Exposure to API development and integration, including Google & Microsoft Cloud APIs Knowledge of developing within the Microsoft Azure stack Experience in an Agile SCRUM environment incl. iterative development, design reviews, example mapping, peer/code reviews and unit testing Proficient in use of development tools including Azure DevOps, the Visual Studio suite, GIT Experience with authentication and security, including OAuth, JSON Web Tokens Experience of threading, async and task handling Optional/Desirable Experience using AI-assisted development tools such as GitHub Copilot, Claude Code, Codex, Cursor or similar tools as part of a professional software development workflow. Understanding of the opportunities of generative AI in software development, and the requirements for maximising the benefit Exposure to integrating AI-powered services, LLMs or agent-based workflows into web applications. What you'll get: Flexible and hybrid working arrangements 24 days annual leave (excl. Bank holidays), increasing each year of service Health and Wellbeing platform Cycle to Work scheme 6% Employer Contribution Pension

Senior Software Engineer - Buckinghamshire, Hybrid Bright Purple are supporting an ambitious product company looking for a Senior Software Engineer to play a key role in the development and evolution of a critical business platform. Alongside hands on development, you'll introduce modern engineering standards, bring a considered approach to AI assisted tooling, and mentor the engineers around you. If you want your work to matter beyond the sprint board, this is that kind of job. What Is In It For You: Salary up to £90,000 Hybrid working with 2 days a week onsite Pension Private medical Investment in career growth The Role: As a Senior Software Engineer, you will work across the full technology stack with a strong focus on .NET development while also taking ownership of modern Angular applications. You'll play a key role in enhancing performance, scalability and user experience across a platform central to the organisation's future growth. Key Responsibilities: Develop and maintain scalable C# and .NET applications and APIs Design, build and enhance modern Angular front ends Work with Azure cloud technologies and DevOps pipelines Improve platform performance, reliability and scalability Essential Skills: Proven commercial experience with C# and .NET Demonstrable Angular expertise at a senior level A solid track record of building and shipping production grade software Deep understanding of frontend architecture and how technical decisions shape the user experience Hands on commercial experience with Microsoft Azure Comfortable with CI/CD pipelines and modern engineering practices APPLY NOW with your most up to date CV forconsideration. Bright Purple is an equal opportunities employer: we are proud to work with clients who share our values of diversity and inclusion in our industry.

Bright Purple is seeking a Senior Software Engineer based in Bedford to enhance their key business platform. The role includes developing C# and .NET applications and modern Angular front ends while introducing engineering standards. Offering a salary up to £90,000 with hybrid working, 2 days onsite, plus benefits like pension and private medical. This is an opportunity to make a meaningful impact in an innovative environment.

ABOUT US:LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It's how we've contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services - and our open-access model - we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG's ticker symbol is LSEG.OUR PEOPLE:People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.We know that real personal growth cannot be achieved by simply climbing a career ladder - which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.ROLE SUMMARY:We're hiring a Senior Developer to join the Regulatory News Service team in London. For over 300 years, the London Stock Exchange has produced detailed market information for companies and investors, technological innovations have transformed this service from a twice-weekly paper publication for the London business community to a continuous flow of electronic information to all the financial markets across the globe.The focus of this role is to utilise artificial intelligence to improve user experience and reduce operational workload for both internal and external users of the Regulatory News Service. This role involves full lifecycle Agile development, including requirements analysis, estimation, design, coding, testing, and peer code reviews. You'll contribute to service improvement initiatives alongside development and support tasks, and coordinate with a range of technology and business partners. The position also requires setting up and handling your development environment and supporting ad hoc duties aligned with team goals. Flexibility is important, as release and change management activities may occasionally occur outside standard regular working hours.WHAT YOU'LL BE DOING:Design, develop and maintain applications with embedded AI powered features.Contribute to AI adoption and definition of best practices for AI usage within the application.Work closely with product owners and application users on vision for next generation of the product.Employ a range of techniques to analyse requirements and issues and evaluate multiple solutions against engineering, business & strategic criteria.Identify and resolve barriers to business deliveries implementing solutions which iteratively add customer valueDesign solutions using common design patterns with a range of design tools & techniquesConduct peer reviews to ensure designs are fit for purpose, extensible and re-usableDesign and build solutions which are secure and controlledComplete the design of applications and performing code analysis and overall improvement of style and usabilityIdentify and implement improvements to codeDevelop a deep understanding of our users, their needs, behaviours, nice-to-haves, and bring that insight into the heart of all aspects of project workCommunicate effectively with project partners to report on progress against agreed deliverables and raise any critical issues/blockersWHAT YOU'LL BRING:Required:Business level proficiency in the English language - written and verbalProven ability to build intelligent business applications using latest AI technologies, MCP, LLMs and agentic frameworks.Detailed knowledge of AI best practices and controls along with software development principlesExperience delivering enterprise level software using Java or C#.Experience and understanding of OO, MVC, REST, Web API and Unit testing frameworks.Good knowledge of relational and/or NoSQL databases (PostgreSQL & DynamoDB experience is advantageous)A good working knowledge of git (via Gitlab), source code control and branching/merging practices.Willingness to learn and develop using multiple programming languages.Preferred/Nice to have:Expert practitioner of test-driven development, agile methodologies, and clean code programming.Experience and understanding of HTML, JS, CSS, Typescript, Angular v8+, JS libraries, AWS.Experience with c#, .Net / .Net Core, IIS.A good working knowledge of other AWS cloud services (DynamoDB, Redis, CloudFront, etc)Experience with Docker and, or other Container tooling (Kubernetes, Anthos, AWS ECTS)Knowledge of CI/CD practicesExperience working with Jira, Jenkins & Nexus.Prior experience of working in large corporate enterprisesBenefits:We are looking for intellectually curious people, passionate about the bigger picture of how technology industry is evolving, ready to ask difficult questions and deal with complicated scenarios! If you are creative and a problem solver, this is the place to be as will be supporting you to fast-forward your career!We maximise each employee's potential through personal development through a wide range of learning tools both formal and informal. We believe in remunerating our people with competitive salaries and a range of attractive benefits such as:25 days' holiday per year1 additional day off for your BirthdayAnnual wellness allowanceShare Purchase PlanMedical Health InsuranceMedical Subscription (preventive medical services)Life insurancePillar 3 Private PensionMeal VouchersFlexible BenefitsBooksterVolunteering EventsAll LSEG colleagues with at least one year's continuous service, who become parents, are now entitled to at least 26 weeks' paid leave, and the option to return to work on a phased basis, in relation with specific company's policy and guidelinesCareer Stage:Senior AssociateLondon Stock Exchange Group (LSEG) Information:Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it's used for, and how it's obtained, your rights and how to contact us as a data subject.If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

Application Engineer Location: Oxford Street, Manchester Role Type: Permanent Work Setup: Hybrid - 3 days in the office (Tuesday to Thursday) Who We Are Vanguard is one of the world's leading investment firms, dedicated to helping clients achieve lasting financial success. Established in 1975, its unique ownership structure-where funds own the company and investors own the funds-ensures all efforts are focused on client outcomes. Known for integrity, innovation, and low-cost investing, fosters an inclusive and collaborative culture that empowers employees to make a meaningful impact globally. What You'll Do Lead senior-level systems analysis, design, development and implementation of applications and databases, including integration of third-party products. Translate technical specifications into efficient, well-tested code for complex new builds and enhancements, producing programmes, reports and test artefacts. Promote automation-friendly development practices by designing and implementing tests that support continuous integration and delivery. Deploy code across development, test and production environments on schedule, provide production follow-up support, and manage change-control documentation. Apply and advocate development methodology and architecture standards; mentor less-experienced colleagues and resolve escalated technical issues. Engage with internal clients and cross-functional teams to perform systems analysis, explain technical considerations at the appropriate level, and ensure solutions meet business and technology needs. Ensure compliance with IT and information-security policies, verify deliverables meet requirements, and participate in special projects or other duties as required. What You Bring Minimum five years' hands-on experience in software development, system integration, database design and Back End architecture. Bachelor's or Master's Degree/Diploma in Computer Science or in an equivalent discipline. Proven expertise in Server Side development and API management, with strong skills in database design, optimisation, debugging and performance tuning. Required technical stack: Java, Spring Boot, Node.js, Angular (Front End essential), SQL, GitHub/Bitbucket, Bamboo, CI/CD, TDD/BDD; plus experience with Python. Practical experience with AWS services (CloudFormation, ECS/Fargate, Lambda, DynamoDB, S3, IAM); AWS Cloud Practitioner certification preferred. Observability and tooling experience with Splunk, Honeycomb Agile working knowledge (JIRA, Confluence) What's Next If you are ready to take the next step, apply now! Successful applicants will be contacted directly by a recruiter to discuss the role more. We are committed to creating an inclusive recruitment experience. If you require support or adjustments to the recruitment process, our Adjustment Concierge Service is here to help. Please feel free to contact us at (see below) to discuss how we can support you. This position is being recruited on behalf of our client through our Outsourcing service line. Resource Solutions Limited, trading as Robert Walters, acts as an employment business and agency, partnering with top organizations to help them find the best talent. We welcome applications from all candidates and are committed to providing equal opportunities.

Engineer the future of global finance. At Citi, our Tech team doesn't just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech. Role Overview / What will you do We are seeking a highly experienced and hands-on Applications Development Lead to drive the design, development, and delivery of mission-critical applications for the Markets Financing desk, specifically supporting the term and flow business. This senior role will oversee the entire development lifecycle for Repo and Collateral Optimization, encompassing intuitive front-end interfaces and highly resilient back-end services. The team works closely with the Citi Global Finance Desk and Markets Treasury Desks. The suite of Finance Desk applications provides comprehensive functionalities including position management, trade capture, electronic trading, market risk processing, and reporting. This is supported by a mixed technology environment consisting of client-server applications developed in Java, Angular, and C#, with services running on Linux servers and Cloud Containers. The successful candidate will collaborate closely with business stakeholders, funding desks, and desk heads to translate complex requirements into scalable and robust technology solutions. Responsibilities include leading a global development team, setting technical direction, and ensuring high availability, performance, and strict regulatory compliance. The primary objective is to deliver architecturally sound systems that effectively enable collateral management, collateral optimization, and critical funding operations. This role offers a unique opportunity to work closely with business stakeholders while contributing to the strategic technology roadmap. We are looking for technically strong team players capable of taking ownership and leading initiatives when needed. Responsibilities Lead integration of functions to meet goals, deploy new products, and enhance processes Analyze complex business processes, system processes, and industry standards to define and develop solutions to high level problems Provide expertise in area of advanced knowledge of applications programming and plan assignments involving large budgets, cross functional project, or multiple projects Develop application methodologies and standards for program analysis, design, coding, testing, debugging, and implementation Utilize advanced knowledge of supported main system flows and comprehensive knowledge of multiple areas to achieve technology goals Consult with end users to identify system function specifications and incorporate into overall system design Allocate work, and act as an advisor/coach developers, analysts, and new team members Influence and negotiate with senior leaders and communicate with external parties Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency. Key Skills and Experience Hands on expertise in front end and server side component design and development Experience in systems analysis and programming of software applications Knowledge of Fixed Income products (e.g. repo, swap, bonds, futures) Strong understanding of Repo trade lifecycle, including Collateral Optimization, STP flows and Inventory Management for Funding desks Proven experience leading global technology teams and collaborating directly with business and trading stakeholders Strong experience with Relational Databases like Oracle, MSSQL. Advanced programming skills in Angular, NodeJS, .Net/C#, Java, Caching using GEMFIRE & Ignite and enterprise messaging frameworks Kafka Proven expertise in event driven and API led architecture. AI Tools & Platforms Usage: Hands on experience using AI tools and platforms to design, build, test, and enhance application features. Experience with cloud based architectures on OpenShift Kubernetes. Testing experience with distributed software applications. Strong experience with Unix or Linux. Benefits 27 days annual leave (plus bank holidays) A discretional annual performance related bonus Private Medical Care & Life Insurance Employee Assistance Program Pension Plan Paid Parental Leave Special discounts for employees, family, and friends Access to an array of learning and development resources Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive. Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, 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.

The Opportunity This is your chance to build the foundational systems for 'Citi Assist', a Generative AI assistant that will reach every Citi employee globally. You'll join us on the ground floor, becoming a core builder on a high-visibility platform that sets the standard for how a global bank adopts this technology safely and at scale. Here's what makes this role unique: we know that data is the key to building a successful, safe, and scalable generative AI assistant. The difference between a good AI product and a great one isn't just the model-it's the testing, evaluation, and feedback loops that make it better every day. As a data-focused full-stack engineer, you'll help us craft the tools and systems that let us understand how Assist is performing, where it's succeeding, and where it needs to improve. You'll work across the stack, building everything from intuitive dashboards that surface insights to robust backend pipelines that process evaluation data at scale. What You'll Do Build the tools that make Assist great. You'll design and build the testing, evaluation, and feedback systems that help us understand how our AI assistant is performing in the real world. This means creating tools for both our team and our users to provide feedback, analyse interactions, and measure quality. Work with data across the full stack. You'll build data pipelines that collect and process evaluation metrics, create visualisations that surface insights to the team, and design APIs that power our testing infrastructure. You'll be equally comfortable writing SQL queries as you are building React components. Own your features end to end. You'll take responsibility from conception to production. That means understanding the problem we're trying to solve, designing the right solution, building it, and measuring whether it's working. You'll drive your work forward with autonomy while keeping the team aligned. Build with safety and quality in mind. For us, building safe, sound, and compliant systems is non negotiable. You'll help us establish the data practices and evaluation frameworks that ensure Assist meets our high standards for quality, safety, and regulatory compliance. Set the technical direction. As a VP level engineer, we expect you to influence how we approach problems. You'll mentor other engineers, contribute to architectural decisions, and help establish best practices for how we work with data across the platform. Be a great teammate. We expect you to be a leader in our engineering culture. That means offering thoughtful code reviews, unblocking your peers, sharing what you learn, and helping raise the bar for the whole team. We succeed together. What We're Looking For We know that people from underrepresented groups are less likely to apply if they don't meet 100% of the criteria. If you're excited about this role but your experience doesn't align perfectly with every qualification, we encourage you to apply anyway. You may be just the right candidate for this or other roles. Strong experience building and deploying production applications across the full stack Proficiency in multiple languages, including Python and TypeScript/JavaScript (experience with Go or Java is a plus) Deep experience working with data-whether that's building data pipelines, designing analytics systems, or creating data driven products Experience building user facing features with modern frontend frameworks like React, Vue, or Angular Strong SQL skills and experience with relational databases like Postgres Experience building backend services and APIs that handle data at scale Comfort with containerised environments and cloud infrastructure (we use OpenShift/Kubernetes) Strong understanding of CI/CD pipelines, testing frameworks, and automation Experience with data visualisation tools and techniques What Matters Most to Us A data driven mindset. You believe that good data and rigorous evaluation are essential to building great products. You know how to instrument systems to collect the right data and how to turn that data into actionable insights. A solutions first approach. You find the best path to solve the problem, whether that's building new infrastructure, leveraging existing tools, or changing how we think about the problem entirely. You're pragmatic about trade offs. Technical leadership. You have strong opinions, loosely held. You can articulate your technical vision and bring others along with you, but you're also open to being wrong and learning from your peers. A focus on impact. You understand that our goal is to deliver value to users and make Assist better every day. You know when to move fast and when to invest in building things properly. Clear communication and ownership. You take initiative, communicate proactively, and take responsibility for outcomes. You don't wait for permission, but you keep stakeholders informed. A collaborative spirit. You thrive in team environments where you can learn from others and help them grow. You see mentoring and knowledge sharing as part of your role. Bonus Points For Direct experience building evaluation or testing frameworks for AI/ML systems Experience with LLM evaluation techniques, prompt engineering, or AI safety concepts Experience with data pipeline tools like Apache Airflow, Dagster, or similar Experience with analytics platforms, experimentation frameworks, or A/B testing infrastructure Background in data science, analytics engineering, or similar data focused roles' Contributions to open source projects in the data or AI space Experience working in highly regulated environments Our Tech Stack We work with Python, TypeScript, Go, and Java on the backend. Our frontend is built with TypeScript, React, and Next.js. We use Postgres for our database, run everything on Kubernetes (specifically Red Hat OpenShift), and our DevOps setup includes GitHub and CI/CD tools like Tekton and Harness. Our Team and Mission We're the Common Platform Engineering team for GenAI, a central group in the Chief Technology Office. We're a focused agile team that owns our work from idea to production. Our culture is built on a shared belief in engineering craftsmanship, backed by leadership that actually understands what that means. We're on a journey to prove what's possible inside a large organisation, and that means navigating some legacy while building the future. This isn't a role for someone who wants everything to be perfect on day one. It's for an engineer who wants to help us get there, influencing how we solve problems and raising our collective bar. We have a dual mission. First, we're building 'Citi Assist', the GenAI digital assistant for our colleagues. Second, we're providing the platforms and guidance that enable the entire organisation to adopt GenAI safely and effectively. This is not a typical banking job. You'll build foundational technology that has a direct, positive impact on hundreds of thousands of people. You'll have the executive support to tackle big problems and real autonomy to shape our solutions. Most importantly, you'll join a passionate, collaborative team where we all learn from each other and push each other to do our best work. What We'll Provide You This is a unique role that will put you in the position to be part of a new venture and actively drive change. Every day there will be new challenges that will help you develop new skills that can drive your career. By joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as: 27 days annual leave (plus bank holidays) A discretionary annual performance related bonus Private Medical Care & Life Insurance Employee Assistance Program Pension Plan Paid Parental Leave Special discounts for employees, family, and friends Visit ourGlobal Benefitspage to learn more. Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive. 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.

Who are OnBuy? OnBuy are an online marketplace who are on a mission of being the best choice for every customer, everywhere. We have recently been named one of the UK's fastest-growing tech companies in the Sunday Times 100 Tech list. All achievements we are very proud of, but we don't let that go to our head. We are all laser focused on our mission and understand the huge joint effort ahead of us needed to succeed. Working at OnBuy: This is a critical role responsible for building, scaling, and evolving OnBuy's core commerce platform across both front end and back end systems. As a Senior Full Stack Engineer, you will own engineering delivery end to end; from customer facing experiences to underlying services and data systems. You will operate within a cross functional team and be accountable for shipping high quality, scalable solutions that directly impact GMV, seller performance, and customer experience. This role moves beyond "front end vs back end" you are an Engineer responsible for outcomes, not layers. End-to-End Engineering Ownership Design, build, and maintain full stack solutions across UI, APIs, and backend systems Translate product requirements, designs, and wireframes into scalable, production ready systems Own features from concept development testing release monitoring Front End Excellence Build responsive, high performance user interfaces using modern JavaScript frameworks Translate UI/UX designs into clean, maintainable code Optimise applications for speed, scalability, and usability Back End & Platform Engineering Design and develop scalable services and APIs Work across monolith and microservices architecture (Laravel / PHP services) Maintain and evolve legacy systems while building modern, scalable architecture Quality & Engineering Standards Own quality to production - testing is embedded, not a phase Write and maintain automated tests (unit, integration, end to end) Participate in and lead code reviews to ensure high engineering standards Debug, troubleshoot, and resolve issues across the stack Performance & Scalability Optimise systems for performance, reliability, and scale Work with large scale data systems (MySQL, NoSQL, search platforms) Identify bottlenecks and proactively improve system efficiency Collaboration & Leadership Work in cross functional teams with Product, Design, QA, and other Engineers Mentor and support less experienced engineers Communicate technical concepts clearly to non technical stakeholders Essential Strong full stack engineering experience, owning end to end delivery Proven backend expertise in PHP (Laravel) Strong JavaScript (ES6+) skills with modern frameworks (React/Vue/Angular) Experience designing and building RESTful APIs and scalable systems Experience with MySQL and NoSQL databases (e.g. Couchbase, MongoDB) Strong understanding of system architecture and microservices Experience with event driven systems (e.g. RabbitMQ, Pub/Sub) and cloud environments (GCP) Familiarity with Docker and CI/CD pipelines Strong engineering practices: testing, code quality, and production ownership Desirable Experience in eCommerce or marketplace platforms Cloud experience (GCP) Experience with NoSQL (e.g. Couchbase) and Search platforms (e.g. Constructor & Solr) Experience working in microservices architecture This role is UK remote role you must be based in the UK and have full right to work in the UK. The day rate is £550-£650 per day. Please confirm your outside IR35 day rate upon application. This is a 4 month contract. Our Commitment OnBuy is an equal opportunities employer. We are dedicated to creating a fair and transparent workforce, starting with a recruitment process that does not discriminate on the basis of gender, sexual orientation, marital or civil partnership status, pregnancy or maternity, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability, or age.