Visa Inc.

A leading financial technology company is seeking a passionate Software Engineer to join their team in Cambridge. In this hybrid role, you will work on innovative financial crime technology, delivering robust software solutions. Candidates should have a relevant STEM degree and experience in software development, particularly with Java and machine learning frameworks. The position involves improving workflows, engineering data-intensive applications, and providing support for mission-critical services.

At Visa, we are passionate about making a difference. We lead the way in disrupting fraud from multiple vectors. In this role you will be joining an exciting, innovative business new to the Visa family. At Featurespace, we are the world leader in Enterprise Financial Crime prevention, using cutting-edge machine learning technology to fight fraud and money laundering. As the inventors of Adaptive Behavioral Analytics and creators of the ARIC platform, we are trusted by customers across 180+ countries. As a Senior Software Engineer, you will help shape the future of our SaaS platform, playing a key role in delivering next-generation fraud prevention solutions at scale. The Opportunity As a Senior Software Engineer at Featurespace, you will play a pivotal role in designing, building, and scaling our global, multi-tenant SaaS platform. This hands-on role offers the chance to make a significant impact by leveraging cutting-edge technologies to combat financial crime and deliver innovative solutions to customers worldwide. If you thrive in a collaborative, innovative, and fast-paced environment, this is your chance to lead, mentor, and shape the future of our platform while delivering high-impact solutions in a startup-style environment. In this role, you will: Lead the design and development of services and infrastructure for our SaaS platform, utilizing technologies like Java, Python, Rust and AWS. Own and drive complex technical projects, guiding the team through architectural discussions and implementation to ensure scalability, maintainability, and performance. Collaborate across teams with engineers, product managers, designers, and data scientists to design and build end to end features that solve real customer problems. Partner with internal stakeholders to gather and refine product requirements, aligning them with technical strategies to enhance our platform's capabilities. Optimize cloud infrastructure and managed services, ensuring our systems are secure, performant, and scalable as our customer base continues to grow globally. Mentor junior engineers, foster best practices in code quality, automated testing, and architecture decisions across the team. Troubleshoot and resolve performance bottlenecks in our multi tenant architecture, ensuring uptime and reliability across the tech stack. Take operational responsibility for the services owned by your team, including participation in on call rotations to ensure the health of production services. Why Join Us? Be part of a growing, passionate team that's leading the fight against financial crime with innovative technology. Work on impactful projects that shape the future of fraud prevention and AML solutions. Collaborate with a talented group of engineers in a fast paced, learning focused environment. This is a hybrid position. There is an expectation of at least 3 days in the office per week. Basic Qualifications Work experience with a Bachelor's Degree or an Advanced Degree (e.g., Masters, MBA, JD, MD, or PhD) Required experience: Proven experience as a Software Engineer or Senior Software Engineer, ideally within a high scale SaaS environment. Proficiency programming in Java or Python. Strong understanding of systems design, data structures, and algorithms for building distributed systems. Ability to lead technical projects, mentor team members, and influence architectural decisions. A commitment to automated testing practices and ensuring the reliability of systems. Strong skills in troubleshooting and optimizing performance in large, distributed systems. Great to have: Experience working in fraud prevention or financial technology domains. Familiarity with relational and NoSQL databases in production environments (e.g., PostgreSQL, DynamoDB). Experience with large scale data processing, storage technologies, and RESTful API design. Hands on experience with AWS services such as Lambda, ECS, S3, RDS. Familiarity with Kubernetes. Knowledge of message queueing systems and event driven architectures. Experience with CI/CD pipelines, source control, and modern development environments. Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

A leading financial services company in Cambridge is searching for a Senior Java Software Engineer to play a crucial role in developing features and maintaining software. You will work collaboratively with your team, ensuring software dependencies are updated and addressing customer issues. The ideal candidate has solid experience in software engineering, particularly with scalable applications and API integrations. Join a vibrant environment that prioritizes innovation and team success.

A leading software firm based in Cambridge is looking for a Senior Software Performance Engineer. In this role, you will optimize systems for performance and provide coaching to engineers. The ideal candidate will have a deep understanding of JVM performance tuning, real-time data streaming, and Linux performance tools. This position offers a hybrid work model, allowing flexibility while contributing to a team focused on innovative solutions in fraud detection.

Responsibilities Develop and implement solutions for threat detection, anomaly identification, and predictive security analytics. Automate security workflows, including vulnerability management, incident response, and compliance reporting. Configure security tooling, leveraging Infrastructure as Code tools. Collaborate with security operations, architecture, and engineering teams to embed AI into security processes. Conduct threat modelling and design reviews to ensure robust security controls. Support security policy development, patterns. Qualifications Strong software development background (Python, Java, other). Strong understanding of network, application, and system security. Experience with cloud security services (AWS, Azure, GCP). Experience with deploying secure infrastructure into cloud environments. Experience with CI/CD pipelines. This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager. Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

A global payment technology company is seeking a skilled individual for a hybrid role focused on security analytics. The ideal candidate will develop solutions for threat detection and automate security workflows while collaborating with various teams. Required qualifications include strong software development skills (Python, Java), cloud security experience (AWS, Azure, GCP), and a solid understanding of security protocols. This position allows for flexibility in the work environment.

At Featurespace, we strive to be the world's best software company at protecting our clients and their customers from fraud attacks. We do that with personality, heart and professionalism, cultivating an innovative, fun and positive team atmosphere where everybody can contribute to solving our clients' problems in new, innovative ways. We are always seeking to be the best at what we do and make our customers smile. Our real-time Financial Fraud Detection platform processes massive volumes of streaming and historical data. To meet our ambitious performance and scalability goals, we are looking for a Senior Software Performance Engineer with deep expertise in JVM tuning, distributed systems optimisation, and AWS infrastructure performance. The Role In your role as Senior Systems & Software Performance Engineer, you will help us achieve our goals and deliver success on behalf of our customers by: Participating in daily stand-ups and team meetings to synchronise activities with the team, often leading the call to ensure everyone is aligned. Setting the standard of performance-focused engineering, ensuring that our systems are optimised for high throughput and low latency. Tackling complex performance challenges and participating on the on-call out of hours rota to assist support teams with resolutions to customer incidents related to performance issues. Profiling applications using JFR, async-profiler, and JProfiler, and driving code/configuration changes from findings. Tuning and scaling our data infrastructure Designing cloud architectures optimised for performance and cost Building and maintaining sizing calculators for ingestion, storage, and query workloads. Defining and validating SLAs/SLOs, implementing observability to track p50-p99.9 latency and throughput. Leading performance incident investigations and postmortems. Collaborating with cross-functional teams to deliver high-performance and reliable solutions. Coaching and mentoring other engineers in performance engineering best practices. Role Responsibilities As a company we hire people with a willingness to adapt to a variable role, so along with the key responsibilities below, we ask for ownership of any other duties as required. Technical Expert understanding of relevant technologies - JVM internals, distributed systems, and Linux performance tools. Ability to write optimised, scalable code and leave systems better than you found them. Solve complex performance issues and help others debug and resolve bottlenecks. Improve system performance through deep analysis and proactive tuning. Act as a code approver for performance-related changes across teams. Impact Lead significant performance engineering initiatives and make impactful contributions to system scalability. Drive technical improvements, optimisations, and architectural decisions that enhance performance. Identify solutions to large-scale performance issues, collaborating with peers and stakeholders. Participate in interviews and recruitment for performance-focused roles. Behaviour Take full ownership of performance projects and ensure success from design to production. Regularly mentor other engineers, especially in profiling, tuning, and scaling. Onboard new engineers into performance best practices. Provide and seek timely, actionable feedback. Promote good engineering practices and help others deepen their knowledge. Show confidence in decision-making and draw on expertise across the company when needed. This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager. Basic Qualifications A Degree in Computer Science, Engineering, Mathematics, or a related field-or equivalent practical experience Proven experience in JVM performance tuning (G1, ZGC, Shenandoah), heap/thread tuning, GC analysis. Knowledge of Java profiling tools (JFR, async-profiler, JProfiler). Hands on experience with real time data streaming (Kafka, RabbitMQ etc), NoSQL databases (MongoDB, Redis) and monitoring (Prometheus, Grafana). Proficiency with Linux performance tools. Ability to manage and prioritise workload independently. Code profiling and performance tuning. Preferred Qualifications Experience with relational and/or NoSQL databases for large datasets. Experience with modern IDEs, source control, and CI/CD systems. Knowledge of performance patterns and trade offs in distributed systems. Hands on AWS experience Experience with scalable distributed applications. Familiarity with schema/serialization optimisation (Avro, Protobuf). Experience with HTTP/2 and gRPC Cloud automation experience (Terraform, Ansible, CDK). Kubernetes workload isolation and resource governance. Experience building cost/performance models for infrastructure. DevOps/SRE mindset Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

Senior Java Software Engineer - Featurespace At Featurespace, we strive to be the world's best software company at protecting our clients and their customers from fraud attacks. We do that with personality, heart and professionalism, cultivating an innovative, fun and positive team atmosphere where everybody can contribute to solving our clients' problems in new, innovative ways. We are always seeking to be the best at what we do and make our customers smile. The Opportunity In your role as Senior Java Software Engineer you will help us achieve our goals and deliver success on behalf of our customer by: Collaborating with team members to develop new features and maintain the existing Java code base to support the ARIC UI Supporting the teams' efforts to ensure software dependencies remain up-to-date and vulnerability free Supporting the team's investigation and resolution of customer issues, including leading co-ordination where necessary Providing Java and agile software development expertise Role Responsibilities As a company we hire people with a willingness to adapt to a variable role, so along with the key responsibilities below, we ask for ownership of any other duties as required. Expert understanding of relevant technologies and ability to write optimized, scalable code Solves complex problems and helps others in debugging and resolving issues Seen as a code approver at a larger scale outside of scrum team Improves areas of the system they work on, leaves things better than they found them Leads significant portions of projects and makes impactful contributions Capable of driving technical initiatives and leading resolution of critical bugs Identifies solutions to larger problems with assistance from peers Takes part in the process of interviewing, recruitment, and onboarding within their team Takes full ownership of projects and ensures success Regularly mentors other engineers, particularly those less experienced than themselves Able to support onboarding of new engineers into their team Proactively seeks and gives timely, actionable feedback in their team Promotes good practices and helps other engineers deepen their knowledge Confidence in judgement and design making, pulls in support from around the company where needed Required experience Demonstrable experience in a software engineering position Ability to manage and prioritise your own workload Modern IDEs, source control and continuous integration systems Experience of designing and developing scalable distributed applications Knowledge of patterns and their trade-offs in a distributed environment Comfortable working with large codebases External API integration Code profiling and performance tuning Great to have Experience of relational and /or NoSQL databases for large datasets Cloud platforms and automation Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

Reconciliation Systems Manager - 12 month FTC Reports to Reconciliation Systems Manager The Reconciliation Systems Analyst will work together with the Reconciliation Systems Manager to ensure the quality of our Treasury Systems. Continuously working to a high standard, the Reconciliation Systems Analyst will review and ensure that new features and integrations are operating at an acceptable level prior to release into the production environment and readily available to our stakeholders. Working towards developing a strong understanding of payment, settlement and trading processes and system workflows. Support Product and Operations Delivery and Change teams to address issues during development/testing phases related to Treasury Operations. Monitor the testing completed by different teams and raise issues related to our Treasury function. Review the general ledger for any new testing that is completed as part of the project and ensure the ledger entries have generated as expected, as per the test plan/flow of funds. Review reporting for new providers and feedback to the Network Expansions and Banking teams as required. Update Reconciliation Systems documentations - records of testing completed, new processes, flow of funds etc. Assist the Reconciliation Systems Manager with building new processes in one of our reconciliation tools before handing it over to the Treasury and Control team. Work with Treasury Team globally to ensure smooth implementation of projects (e.g. training, feature demos, feedback sessions, etc). Liaise with the Reconciliation Systems Manager on areas for automation and continuous improvement of our Treasury processes. Be familiar with Treasury regulations (i.e. FCA, DNB) and apply this to new projects and features. Build and maintain a strong relationship with different internal stakeholders. Maintain an adequate knowledge of internal systems and processes. Proactively raise issues and errors identified during a project to the Reconciliation Systems Manager. Attend regular meetings with Product and Network Expansions teams to set up timeline expectations to organise the project scheduler. This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager. Exposure to treasury systems (i.e. reconciliation tools, banking platforms) Microsoft Excel - VLOOKUP function, Pivot tables Experience with Tableau or other reporting visualisation platforms. Experience with other project management tools: Confluence, Jira, Zendesk General technical understanding and ability to work with technical people Excellent communication skills (both written and verbal) Attention to detail Be articulate, numerate and organised Ability to work both independently and as a team Meticulous and thorough approach Ability to stay focused under time pressures Demonstrate analytical and systematic approach to problem solving Be able to manage own workload on short and long term projects Multitask multiple projects at any given time. Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

A leading payment technology company is seeking a Reconciliation Systems Manager for a 12-month fixed-term contract in Cardiff. The role involves ensuring the quality of Treasury Systems, monitoring testing, and collaborating with various teams to facilitate smooth operations. The ideal candidate should have expertise in Treasury systems, excellent communication skills, and a meticulous approach to tasks. This hybrid position allows for flexibility, with specific in-office expectations set by the hiring manager.

Featurespace are looking for a passionate and enthusiastic Software Engineer to join our team. You will work on our industry-leading financial crime fighting technology, making the world a safer place to transact alongside our existing team of innovators and experts. We are looking for individuals who can deliver and maintain a robust product across the full software development life cycle. You will help us achieve ourgoals and deliver success on behalf of our customers by Being responsible for analytical technology that is fast, flexible, and easy to use. Implementing data intensive applications and machine learning components, enabling Analytics teams to deliver state-of-the art modelsin a timely manner. Optimising and scaling modelling workflows required to build analytics for increasingly large datasets. Implementing new features within ARIC (our software platform) that improvesthe modelling lifecycle of analytics. It is first and foremost an engineering role - enabling users to create machine learning and analytics solutions. This position is based in our Cambridge office, with 3 days per week in the office expected. Day to Day Responsibilities Core responsibilities of all members of the team include Improving workflows for designing, deploying, and maintaining analytics Engineering optimized and maintainable data intensive applications Championing software engineering process and process improvements Providing support for mission critical services deployed to production including an on call rota This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager. Basic Qualifications Relevant STEM degree (e.g., Computer Science, Engineering, Physics, Maths) Experience designing and developing applications in any language Understanding of the full SDLC, including source control, testing and code reviews Comfortable working with large codebases Knowledge of secure software development practices Preferred Qualifications Experience designing and developing applications in Java Knowledge of the lifecycle around training and deploying machine learning models Knowledge of parallel and distributed computing Knowledge of database architectures and data layouts for efficient processing Experience with real time event processing systems Experience with performance tuning and profiling Ability to design information rich tools in a user-friendly way Understanding and use of GenAI technologies in a secure software development lifecycle Experience with machine learning frameworks such asTensorflow orPyTorch Experience with working in a Linux environment Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

The Data ScientistGraduateis a key member of theclient-facingData Science Lab team in the European region. As a Data Scientist, you will be accountable for the development and delivery of analytics-driven strategies and solutions for Visa's external clients in Europe. In this role, you will work collaboratively with VCA and a multitude of internal functions, their senior leaders, and our clients in promoting an insight-driven culture, creative analytic solutions, and best practices to drive business performance with a clear commercial 'value' and measurable 'return'. Half of your day will involve delivering projects (coding/working with data), and the other half will be dedicated to discussing data requirements and managing internal and external meetings. Please bear in mind that our workload varies tremendously, as each project is very bespoke. Sometimes we might be delivering a CSV file; another time, a predictive machine learning model or segmentation. Whatever the solution is, you will be involved in the end-to-end process, starting from gathering clients' requirements all the way to delivering actionableinsightsthat enable our clients to makedata-drivenbusiness decisions. Promote the use of data scienceto solve business challenges for external clients, showcasing creative and impactful solutions. Collaborate with VCA consultantsto identify and develop data science opportunities that support business development and revenue growth. Apply predictive modeling and machine learning techniquesto improve client outcomes in areas like customer acquisition, retention, and profitability. Analyze VisaNet datato uncover key performance metrics and identify issuer P&L opportunities that drive growth for clients and Visa. Deliver business-centric insightsthrough effective data visualization and storytelling that support strategic decision-making. Engage with internal and external stakeholdersto understand business requirements and translate them into actionable data science solutions. Manage multiple data science projects, ensuring clear scope, methodology, and alignment with client goals and timelines. Develop and execute analytic plansusing appropriate statistical and data mining techniques, while maintaining thorough project documentation. Enhance existing solutionsby introducing new methodologies, tools, and best practices in the field of data science. Automate processes and stay currentwith emerging tools, software, and techniques to continuously improve efficiency and innovation. What we're after: Permanent right to work in the UK Graduating in 2025 or in summer 2026. Graduate/Postgraduate degree (Master's or Ph.D.) in a quantitative field such as Statistics, Mathematics, Operational Research, Computer Science, Economics, Engineering, or equivalent experience. Fluentin English. Ability to communicate with impact and interest in working in a consulting-like environment and client-facing project roles. Familiarity with modern distributed systems, including Hadoop, SQL, MLP, and Apache Spark. Familiarity with one or more data analytics/programming tools such as Python. Knowledge of applying predictive modelling and machine learningtechniquesto problems. Visa will consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

Visa's Technology Organization is a community of problem solvers and innovators reshaping the future of commerce. We operate the world's most sophisticated processing networks capable of handling more than 65k secure transactions a second across 80M merchants, 15k Financial Institutions, and billions of everyday people. While working with us you'll get to work on complex distributed systems and solve massive scale problems centered on new payment flows, business and data solutions, cyber security, and B2C platforms. Pismo is a born in the cloud financial services company operating as part of Visa. We build and deliver cloud-based, scalable, payment and banking services for large and small banks all over the world. The Opportunity: We are looking for Versatile, curious, and energetic Site Reliability Engineers who embrace solving complex challenges on a global scale. As a Pismo Site Reliability Engineer, you will be an integral part of a multi-functional development team inventing, designing, building, and testing software products that reach a truly global customer base. While building components of powerful payment technology, you will get to see your efforts shaping the digital future of monetary transactions. The Work itself: Build platforms to support the engineering and delivery of code and systems that touch 40% of the world population while influencing Visa's internal standards for scalability, security, and reusability Collaborate multi-functionally to create design and influence how Pismo succeeds Actively contribute to product quality improvements, valuable service technology, and new business flows in diverse agile squads Develop robust and scalable products intended for a myriad of customers including end-user merchants, b2b, and business to government solutions. Contribute to developing the next generation of CICD processes and tooling Improve the reliability of financial services systems to achieve 8 9s of availability Opportunities to make a difference on a global or local scale through mentorship and continued learning opportunities Essential Functions: Works directly with product owners to gather and refine requirements across products, adding and taking into account existing tools and solutions across the organization. Develops and designs advanced architect solutions that are robust and scalable, considering integrations with other solutions across the internal technical ecosystem. Provides domain expertise on the development of cloud-based distributed systems Plays a key role in the development and delivery of new features across products from end-to-end. The Skills You Bring: Energy and Experience: A growth mindset that is curious and passionate about technologies and enjoys challenging projects on a global scale Challenge the Status Quo: Comfort in pushing the boundaries, 'hacking' beyond traditional solutions Builder: Experience building and deploying modern services and web applications with quality and scalability Learner: Constant drive to learn new technologies such as Angular, React, Kubernetes, Docker, etc. Partnership: Experience collaborating with Product, Test, Dev-ops, and Agile/Scrum teams This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager. Familiarity and experience with DevOps ways of working Familiarity and experience building, managing, and operating platforms Experience leading teams of technical professionals Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

A leading electronic payments company is seeking an experienced Cybersecurity professional to join their team. This hybrid role involves conducting risk analysis, enhancing cloud security, and integrating security within technology operations. Candidates should have 3+ years in cloud security services (AWS, Azure, or GCP), proficiency in Python and scripting, and a solid understanding of network and application security. Join a dynamic and innovative environment dedicated to protecting against cyber threats.

You'llbe a senior contributor in our Data Engineering team, working across various projects, building out key elements of our data platform using a range of modern tools including Snowflake,dbt, and Airflow.You'llhelp us minimise our cloud costs, drive best practices acrossallour Data Disciplines and scale and automate our data governance. EnableVXBS (Visa Cross-Border Solutions)to Make Better Decisions, Faster At the core of this mission sits our data platform.We'regreat believers in powerful, real-time analytics and empowerment of the wider business. We optimise for simplicity and re-usability - all our data lives in one place and is made available via our data warehouse in Snowflake. Whatyou'llbe working on: Working in a multi-disciplinary data engineering team, you will: Support the building of robust data models downstream of backend services (mostly in Snowflake) that support internal reporting, financial and regulatory use cases. Focus on optimisation of our Data Warehouse, spotting opportunities to reduce complexity and cost. Help define and manage best practices for our Data Warehouse. This may include payload design of source data, logical data modelling, implementation, metadata, and testing standards. Set standards and ways of working with data acrossVXBS,working collaboratively with others to make it happen. Take established best practices and standards defined by theteam andapply them within other areas of the business. Investigate and effectively work with colleagues from other disciplines tomonitorand improve data quality within the warehouse. Contribute to prioritisation of data governance issues. This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager. You have experience and a passion for Data Modelling, ETL projects, and Big Data as a developer orengineer You havegood experiencein Python,Javaor similar languages You have proven experience with AWS SQL and data modelling is second nature to you You are comfortable with general Data Warehousing concepts You strive for improvement in your work and that of others, proactivelyidentifyingissues and opportunities You have experience building robust and reliable data setsrequiringa high levelof control You have proven experience with stream technologies like Kafka, Kinesis, Pulsar, etc You have experience working withIaCtools such as Terraform, AWS CloudFormation, or Ansible Nice to haves Any experience working within a finance function or knowledge of accounting. Experience working in a highly regulated environment (e.g. finance, gaming, food, health care). Knowledge of regulatory reporting and treasury operations in retail banking Have previously useddbt, Databricks, or similar tooling Experience working with orchestration frameworks such as Airflow/Prefect Design and implementation knowledge of stream processing frameworks like Flink, Spark Streaming etc. Used to AGILE ways of working (Kanban, Scrum) Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

A leading global payment technology firm in the United Kingdom is seeking a Data Scientist Graduate to join their client-facing Data Science Lab team. The role emphasizes collaborative project delivery through predictive modeling and machine learning to support external clients. Candidates should possess a graduate or postgraduate degree in a quantitative field, be graduating soon, and have strong communication skills. This position will involve engaging with clients to drive data-driven business decisions.

A leading financial services firm in the UK is looking for a Senior Data Engineer to enhance their data platform. This hybrid role involves working with a multi-disciplinary team to optimize data models, ensure data quality, and drive governance best practices. Candidates should have a strong background in Python, SQL, Data Warehousing, and AWS. Familiarity with tools like Terraform and Airflow is advantageous. The company values innovation and empowers employees to make impactful decisions.

Senior Data Scientist, Payments Foundation Models What it's all about - ThePayments Foundation Modelsteam is a new, high-impact initiative within Visa's Data Science organisation. Based in Cambridge, UK, and working closely with global Visa engineering and product teams, the group's mission is to build the next generation ofpayments-focused foundation AI models. These models will power a range of premium Risk and Identity Solutions (RaIS) products, such as fraud scores, with the goal of generatingmore than 100M dollars in new revenue by FY2030 and may be extended into other domains such ascredit risk modellingoragentic commerce personalization. In your role as Senior Data Scientist - Payments Foundation Models you will help us achieve our goals and deliver success on behalf of our customers by: Developing, training, evaluating, documenting and disseminating Payments Foundation Models for use in data science and AI projects across Visa. Collaborating across the organization with engineering, data science, research, product and commercial teams to improve the quality, adoption and real-world impact of our models. This is a hands-on technical role in the Individual Contributor track at the Consultant or Manager level, with scope to influence data science standards and practices while working on high-impact, Visa-scale systems. Responsibilities: We hire people with a willingness to adapt to a variable role, so along with the key responsibilities below, we ask for ownership of any other duties as required. Collaborating with Product Managers & other members of the team to align on the highest value items to work on Coordinating work across multiple teams & when needed, taking on additional "tech lead" responsibilities for driving initiatives to completion. Identifying risks and testing assumptions before development End-to-end processing and modelling of large data sets Training deep learning models utilizing self-supervised training, supervised fine-tuning or adaptation approaches. Ensuring new deep learning models successfully navigate model risk management processes, ensuring high quality documentation exists alongside analytics products (reports, presentations, visualizations) Leading the deployment and maintenance of statistical models and algorithms Collaborating with data engineers to identify and implement improvements to tooling. Enabling both technical and non-technical colleagues by effectively communicating insights learnt during data science work Evangelizing on the benefits of deep learning models within Visa Improving team processes and providing input to future team strategy Mentoring more junior members of the team as well as managing and prioritising their workload to ensure high-quality output. Developing a solid understanding of the fraud and financial crime industries This is a hybrid position. Expectation of days in the office will be confirmed by your Hiring Manager. What we'd like from you - Preferred Qualifications: Advanced degree in Data Science, Computer Science, Physics, Mathematics, or related field. Strong background in machine learning, statistical modeling, and data engineering. Enthusiasm for bringing cutting-edge deep learning models into production at Visa-wide scales. Practical experience managing large-scale datasets and conducting end-to-end analytics projects. Proficiency with programming languages such as Python or R, and familiarity with SQL and big data tools. Technical and analytical skills with the ability to pick up new technologies and concepts quickly. Problem solving skills (especially in data-centric applications). Strong, clear, concise written and verbal communication skills. Ability to manage and prioritise personal workload Excellent communication skills for technical and non-technical stakeholders. Proven ability to lead cross-functional projects and mentor junior team members. Experience with fraud detection, risk analytics, or financial crime prevention. Experience developing models within a model risk management framework. Experience with version control software and workflows (e.g. git) Experience with PyTorch or another deep learning framework Familiarity with the training and serving of artificial neural networks Subject matter expertise in the banking and payments industry. Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

Cybersecurity is at the beating heart of our business. Our diligence and expertise is what makes us the undisputed leader in electronic payments. We've made it our priority to create a top-tier Cybersecurity team, poised to defend us against any potential cyber threats. We're looking for those of you who are inherently driven and fascinated by the art and science of cybersecurity and more specifically, mergers and acquisitions with a specific focus on Cybersecurity integration. We'll equip you with the very best tools and tech so that you can deliver top-notch results. Continuous self-development underpins job fulfillment at Visa With the Security Team you will: Conduct threat and risk analysis and participate in the development of mitigation strategies Assist in the development and enforcement of security policies, procedures, and best practices Enhance the security posture of the entity hosted in public cloud or on-prem environment Translate security and technical requirements into business requirements and communicate security risks to different audiences ranging from business leaders to engineers. Collaborate with IT and other business units to ensure security is integrated into all aspects of technology and operations Develop the infrastructure and platform to automate vulnerability management and security reporting. This is a hybrid position. Expectation of days in office will be confirmed by your Hiring Manager. Basic Qualifications 3 or more years experience with cloud security services (AWS, Azure, GCP) Previous experience in a development role (Python) Scripting experience (Bash) Experience with deploying secure infrastructure into cloud environments Strong understanding of network, application, and system security Preferred Qualifications 5 or more years of work experience in Cloud security AWS Security Specialty certification Technical experience with programming, technology, infrastructure, and security Experience in deploying resources using Infrastructure as Code (Terraform) Experience in securing Kubernetes services Extensive knowledge in OWASP Web Top 10 and CWE Top 25 Strong written and oral communication skills to document reports on assessments and communicate potential weaknesses and risks to different audiences ranging from business leaders to engineers. Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.

A leading payments technology company in Reading is seeking a Staff Software Engineer to join their OVN team. This hybrid role involves diverse responsibilities, including guiding agile teams, leading projects, and supporting mission-critical systems. Candidates should have a strong background in software engineering and a keen interest in the payments industry. Excellent communication and collaboration skills are essential. The company embraces innovation in software development, including opportunities to work with Generative AI technologies in exciting projects.