151 to 175 of 214 Java Jobs in London

role Design and deliver full stack end-to-end digital journeys, covering customer experience, APIs, integrations, data, security and production support. Build and improve Java and Spring Boot microservices, with a strong focus on resilience, scalability and performance. Design secure, reliable AWS solutions and make clear decisions about architecture … than relying on wholesale redesign. Requirements Significant software engineering experience and a track record of delivering large-scale enterprise web applications. Deep experience with Java, Spring Boot, microservices, ReactJS, SQL, MongoDB, DevOps, CI/CD, test automation, and Infrastructure as Code. Strong AWS experience, including the design and deployment ...

delivering powerful, elegant and intuitive trading technology solutions, and we value technical pragmatism, collaboration, and clear communication. We're looking for a Senior Java/Systems Engineer with significant experience in Platform Exchange Systems to design, deliver, and optimise production-ready, high-performance, low-latency technology using Aeron. … hands-on engineer who enjoys designing and optimising low-latency Java services and protocols across the full delivery lifecycle. Someone with genuine experience building Matching Engines and Platform Exchange Systems. Driven by evidence-based engineering, automated testing, benchmarking, and profiling rather than guesswork. A clear, confident communicator who can work ...

build scalable distributed systems and deliver customer-facing products used by millions of users. You are proficient in backend programming languages such as Java, Kotlin, Python, or Go . You have strong experience designing asynchronous, reliable, and scalable systems within microservice architectures . You are comfortable working in greenfield environments … build scalable distributed systems and deliver customer-facing products used by millions of users. You are proficient in backend programming languages such as Java, Kotlin, Python, or Go . You have strong experience designing asynchronous, reliable, and scalable systems within microservice architectures . You are comfortable working in greenfield environments ...

other target hosting environments. This is a migration architecture role rather than a greenfield cloud service design role. Experience across the following legacy technologies: Java, Oracle, WebLogic, IIS, Windows/Linux, AIX, Solaris, COBOL and GEN. Candidates are not expected to have deep expertise across every technology listed. Experience defining ...

other target hosting environments. This is a migration architecture role rather than a greenfield cloud service design role. Experience across the following legacy technologies: Java, Oracle, WebLogic, IIS, Windows/Linux, AIX, Solaris, COBOL and GEN. Candidates are not expected to have deep expertise across every technology listed. Experience defining ...

Modernization experience with strong AWS background is a must," they are typically looking for candidates who have: Led migration of legacy Java applications to AWS Hands-on experience with Java, Spring Boot, Microservices, and TypeScript Strong AWS architecture and implementation experience Experience withEKS/ECS, Lambda, API Gateway ...

team, designing, developing and maintaining scalable applications and services that support business-critical operations. This is a predominantly backend-focused role, working extensively with Java and Spring Boot, alongside opportunities to contribute across the wider technology stack within a collaborative, Agile environment. Key Responsibilities of the Software Engineer: Design, develop … maintain scalable backend applications and services using Java and Spring Boot Build and maintain RESTful APIs to support business-critical systems and applications Contribute to frontend development using Vue.js and develop applications and services using Node.js Deliver software solutions across the full development lifecycle, from initial design through to deployment ...

scalable architecture and direct collaboration with front-office stakeholders. What you'll be doing Design and build modern applications using React or Vue.js and Java-based back-end services. Develop distributed microservices, APIs and scalable enterprise architectures, with Python and Node.js also valuable. Work with relational and NoSQL databases, including … looking for Technical expertise Extensive full-stack software engineering experience. Strong React or Vue.js skills and a solid understanding of UI/UX. Proven Java development experience, ideally with Python and Node.js. Strong knowledge of microservices, API design, distributed systems and scalable architecture. Experience with SQL/NoSQL databases, cloud ...

deliver new functionality across customer-facing web applications Build scalable front-end applications using React and TypeScript Contribute to backend development using Kotlin, Java and Spring technologies when required Work within cross-functional product squads following agile delivery practices Use AI-powered engineering tools and agent-based workflows to accelerate … working with modern web architectures Experience working in agile development environments Strong understanding of AI-assisted development and agentic engineering workflows Experience with Java or Kotlin development Knowledge of Spring Boot and microservices architectures Experience with relational databases and cloud-based environments AWS, Docker, Kubernetes, Kafka or GraphQL experience would ...

Senior Software Engineer: Sports Betting Up to £120,000 + Bonus + Excellent Benefits London - 5 Days On-Site | Python | Java | AI | Low Latency | Distributed Systems Build software where performance, mathematics and real-time decision-making genuinely matter. We're partnering with a highly technical sports betting business continuing … evolving systems used within a quantitative sports betting environment. You'll work across: Designing and building scalable backend services Developing primarily with Python and Java Building low-latency and high-throughput systems Processing large volumes of real-time data Developing distributed and event-driven architectures Building integrations with external platforms ...

Tech Lead Developer - Generative & Agentic AI Python | Java | FastAPI | AWS | LLMs | Agentic AI | Technical Leadership Salary: £75,000 - £85,000 + Benefits Location: London - Hybrid (3 days per week onsite) Employment: Permanent We're recruiting an experienced, hands-on AI Tech Lead Developer to join a technology consultancy delivering enterprise … ready AI solutions. The role Leading a team of AI Developers delivering enterprise-grade Generative and Agentic AI solutions Designing and developing Python and Java services, APIs and AI components Building LLM integrations, RAG architectures and agent-based workflows Developing prompt orchestration, output validation and AI evaluation capabilities Working with ...

/Terraform), running them on Kubernetes (EKS on AWS), and keeping them healthy in production (Prometheus/Grafana). Much of our estate is Java 21 and Spring Boot, but we care more about how you design, reason about and operate systems than about which language you write them in. … Backend development - Solid commercial experience in a modern backend language, plus relational and NoSQL persistence and messaging such as Kafka or SNS/SQS. Java/Spring Boot experience is preferred, but we welcome strong engineers from other languages who are keen to pick up our stack. · AI-native development ...

client is in the Financial Sector and is looking for a new Java Engineer to join the team. This role is hybrid with 3 days a week in Central London. In this role you will be working in a small team of 10 on a brand new AI focused product. … Client Details Our client is in the Financial Sector and is looking for a new Java Engineer to join the team. This role is hybrid with 3 days a week in Central London. In this role you will be working in a small team of 10 on a brand ...

Montreal and Manila we have a proven track record of delivering trading technology that is powerful, elegant and intuitive. We are hiring a Senior Java Distributed Systems Engineer to help build Aeron Sequencer, our technology for applying state machine replication to capital markets. You will work on distributed systems that … systems. Strong written and verbal communication skills. YOU WILL: Analyse, design, discuss and develop distributed systems built on replicated state machines. Write clean, efficient Java code that is maintainable and self-documenting. Design and evolve messaging protocols and software libraries. Troubleshoot and debug Java applications and distributed systems. Drive improvements ...

Programmer, Software Developer, Junior Software Developer, Software Engineer, Web Developer, Front-End Developer, Back-End Developer, Full-Stack Developer, Application Developer, Mobile App Developer, Java Developer, Python Developer, JavaScript Developer, SQL Developer, HTML, CSS, JavaScript, Python, Java, SQL, Git, Software Testing, Debugging, API Development, Agile ...

while helping shape the architecture and technical direction of highly available, distributed software platforms. Design and develop backend applications and services within a Java environment. Build and enhance distributed systems operating at high throughput and availability. Design event-driven architectures and integrations using Kafka. Shape technical approaches and contribute … issues. Improve observability, maintainability and engineering practices across the platform. Key Skills Significant commercial software engineering experience within complex production environments. Deep hands-on Java development experience. Strong understanding of distributed systems and scalable application design. Strong experience with Kafka and event-driven architectures. Experience designing microservices, APIs and integration ...

complex operational problems. As our business continues to grow, we are interested in speaking with an experienced Full Stack Software Engineer with expertise in Java to join one of our live projects within our Central Government team The Opportunity: We have a wide variety of teams who support our customers … resolve critical issues and ensure service continuity. The Fit: At present we are interested in speaking to Full Stack Engineers with commercial experience using Java, TypeScript, JavaScript and React. You will also be comfortable working with cloud technologies, primarily AWS and Azure. Previous consultancy experience is useful but not essential ...

grade security, and enabling seamless integration at scale. What You Will Be Doing Design & Architecture: Architect, build, and maintain highly scalable backend services using Java, Spring Boot, Kafka, and PostgreSQL within an event-driven, microservices architecture. API Product Ownership: Set API standards (RESTful, OpenAPI/Swagger, OAuth2) and build developer … track record of designing, building, and maintaining production-grade public APIs (RESTful APIs, OpenAPI/Swagger, OAuth2). Core Backend Stack: Extensive experience with Java and Spring Boot for building resilient backend microservices. Distributed Systems & Data: Hands-on experience with event-driven architecture (Kafka or similar messaging systems) and relational ...

Secure Development Centre of Excellence. Develop and promote consistent application security methodologies, standards and best practices. Support secure coding standards across technologies including Java, C, C++ and other relevant languages. Integrate security controls and automated testing into CI/CD pipelines , including SAST, DAST and SCA. Support threat modelling … security within CI/CD and DevSecOps environments . The ability to read and understand code in at least one major language such as Java, C, C++, C#, Python or similar. Knowledge of secure software development lifecycles and shift-left security practices. Experience with threat modelling , such as STRIDE ...

Global Financial Services client is hiring for experienced Java or Python Engineers with strong Market Risk and FRTB IMA experience to join a high-profile regulatory technology programme. This will be a permanent role paying between £80K - £110K. Based in the City on a hybrid basis - 3 days per week … office. Experience includes: * Strong Java and/or Python engineering experience * Hands-on Market Risk experience * Strong understanding of FRTB IMA * Experience with Expected Shortfall (ES), NMRFs, P&L Attribution and Backtesting * Experience working with large-scale financial data and complex risk calculations * Strong communication and stakeholder management skills Desirable ...

Java Engineer - Market Data - LSEG/RTSDK Migration Permanent London - Hybrid 3 days per week Salary - £85K - £110K We are seeking an experienced Java Engineer with strong market data and electronic trading experience to support the modernisation of a Futures algorithmic trading platform. The role will focus on migrating from … existing RFA market data usage and map functionality to RTSDK. * Assess differences in market data fields and behaviour across relevant exchanges. * Develop enhancements to Java applications and shared frameworks to support RTSDK. * Support a phased migration while maintaining compatibility and system stability. * Develop and execute automated, regression and integration testing. ...

passionate and committed individuals who want to kickstart a career in technology! You must be willing to complete full-time training in our Java Automation Engineer programme and will then be assigned to work in a junior role with one of our trusted client partners as a 'Spartan' consultant. … will be reviewed accordingly, aligning to availability and requirements ensuring we can match the right candidates to the right roles. We are seeking Junior Java Automation Test Engineer, Technical Consultants to join our team: Automation Testing is at the core of defining, developing and testing products for businesses and their ...

each other Experienced within the Fintech industry YOU HAVE: Significant, professional server-side software development experience Solid experience programming using Core Java. Exposure to Java 25+ is a plus General familiarity with data structures such as sets, hashes, caches etc Experience developing Front Office financial systems, E-Trading … here you will have three stage interviews: 1- A chat with one of our great recruiters. 2- A zoom chat with one of our Java colleagues where they will ask you detailed questions about your experience 3- A Face to Face interview (either in our office or via Zoom). ...

maintain functionality within the OpenLink Endur platform Design, build and support integrated applications used across Front, Middle and Back Office teams, primarily using Java/OpenComponents Analyse, troubleshoot and enhance existing Oracle PL/SQL packages, procedures and database solutions Collaborate with business and technical stakeholders to gather requirements … Strong experience developing and supporting solutions within the OpenLink Endur platform Hands-on experience with OpenLink development technologies, including JVS and/or OpenComponents (Java) Strong Java development skills and experience working with enterprise application integrations Solid database development expertise using Oracle PL/SQL Experience supporting, troubleshooting and maintaining ...

maintain functionality within the OpenLink Endur platform Design, build and support integrated applications used across Front, Middle and Back Office teams, primarily using Java/OpenComponents Analyse, troubleshoot and enhance existing Oracle PL/SQL packages, procedures and database solutions Collaborate with business and technical stakeholders to gather requirements … Strong experience developing and supporting solutions within the OpenLink Endur platform Hands-on experience with OpenLink development technologies, including JVS and/or OpenComponents (Java) Strong Java development skills and experience working with enterprise application integrations Solid database development expertise using Oracle PL/SQL Experience supporting, troubleshooting and maintaining ...