1,551 to 1,575 of 2,322 Java Jobs in London

supporting high-performance applications while collaborating with cross-functional teams in an Agile environment. Key Responsibilities Design, develop, and maintain scalable backend services using Java and/or C# . Build modern, responsive user interfaces using ReactJS . Develop and support RESTful APIs and microservices . Design, optimize, and maintain … performance. Collaborate with Product Owners, Architects, QA Engineers, and fellow developers to deliver high-quality software. Required Skills & Experience Strong commercial experience with Java and/or C# (experience in both is highly desirable). Strong frontend development experience with ReactJS . Proven experience building and supporting REST APIs ...

Capgemini Invent in the UK is seeking a Java Full Stack Engineer to join our Digital Excellence team. You will work on cutting-edge digital transformation projects, building microservices with Java/Spring Boot and frontend apps with React in collaborative, agile squads. London, Glasgow or Manchester base with flexible ...

Test Environment & Platform Manager to support a major enterprise technology transformation, moving from a legacy monolithic landscape towards a modern microservices-based architecture using Java, Kafka and OpenShift. This is a highly technical Test Environment Management position combining environment strategy and ownership with hands-on platform engineering capability. The successful … Infrastructure, Architecture and Operations teams. Highly Desirable Experience Azure/Azure DevOps Jenkins/GitLab Terraform or other IaC technologies HP NonStop infrastructure Java-based environments Prometheus/Grafana/Splunk UFT/Selenium/Cucumber Linux shell scripting Large-scale financial services or similarly complex regulated environments *Rates depend ...

Test Environment & Platform Manager to support a major enterprise technology transformation, moving from a legacy monolithic landscape towards a modern microservices-based architecture using Java, Kafka and OpenShift . This is a highly technical Test Environment Management position combining environment strategy and ownership with hands-on platform engineering capability . … Experience with some of the following would be advantageous: Azure/Azure DevOps Jenkins/GitLab Terraform or other IaC technologies HP NonStop infrastructure Java-based environments Prometheus/Grafana/Splunk UFT/Selenium/Cucumber Linux shell scripting Large-scale financial services or similarly complex regulated environments *Rates ...

them into CI/CD pipelines, and improve automation standards. Key Responsibilities Design, implement, and maintain API and UI automation frameworks using Python or Java/TypeScript. Test and validate RESTful APIs and backend microservices for correctness, reliability, and performance. Build and maintain automated regression suites, including consumer‐driven contract … support peers in adopting automation best practices. Required Experience Experienced SDET (circa 5+ years) with a strong automation background. Proficiency in Python or Java/TypeScript for test automation. Experience with API testing tools such as PyTest, Requests, RestAssured, or Robot Framework. Familiarity with UI automation using Selenium/WebDriver ...

RoleWe are looking for a product-focused Senior Software Engineer to join our Experiences Engineering team. This is a full-stack role, leveraging Java, SQL, React, AWS and AI tools. It suits "T-shaped" engineers who thrive on autonomy and technical leadership. You'll build and maintain highly scalable distributed … operational data or experiment results to validate every significant technical decision. Full-Stack Proficiency: Strong experience in at least one modern backend language (e.g., Java, C#, Go, Python) and familiarity with modern front-end frameworks. AI Coding: you are fluent coding with either Cursor or Codex/Claude/Open ...

payments and merchant experiencesLead the development of resilient, secure, and compliant services for high-volume transaction processingShape and drive adoption of modern backend practices (Java 17/21, Spring Boot 3, Kotlin, clean architecture)Architect event-driven systems (Kafka) that enable scalable, decoupled domains across teamsDefine and enforce standards … operating distributed, production-grade backend systemsProven track record operating at Senior Staff or Principal level, driving architecture across multiple teams or domainsDeep expertise in Java (17+), Spring Boot, and modern backend engineering practicesStrong experience with microservices, event-driven architecture, and asynchronous systemsExperience building systems for high throughput, low latency ...

bring: Extensive experience as a Senior QE SDET Engineer or Senior DeveloperHas breadth of experience across different tech-stacks, such as JavaScript/TypeScript, Java, C#, or Python, amongst othersExperienced in RAG Weaviate, OpenAI, Agents, MCP, Langchain, Prompt Engineering, Browser-Use, and DjangoExperienced building AI Tools, Agents and Agentic workflows … background as a senior DeveloperExperienced in building a strategy covering all aspects of the SDLC process, development, automation, CI, and metricsHands on using Spring Java, Angular, Python, GitLab CI/CD, Junit, Jest, Cucumber, Bash, Gatling et alExperienced in helping teams evolve an Agile 'Shift Left' way of workingExperience ...

written in Solidity or equivalent languages, ensuring security, correctness, and gas efficiency Integrate Web3 libraries and SDKs (e.g., Web3J, Web3JS, Ethers.js, Viem) into enterprise Java and/or Node.js backend services Implement asynchronous, event-driven architectures to handle on-chain events, transaction lifecycle management, and blockchain state synchronization Collaborate with … Proven hands-on experience in Web3 and blockchain application development, including smart contract development and blockchain protocol integration Solid experience with backend development using Java/Spring, Node.js, or equivalent enterprise frameworks Proficiency in Solidity smart contract development, including testing frameworks (Hardhat, Foundry, Truffle) and security best practices Hands ...

written in Solidity or equivalent languages, ensuring security, correctness, and gas efficiency Integrate Web3 libraries and SDKs (e.g., Web3J, Web3JS, Ethers.js, Viem) into enterprise Java and/or Node.js backend services Implement asynchronous, event-driven architectures to handle on-chain events, transaction lifecycle management, and blockchain state synchronization Collaborate with … Proven hands-on experience in Web3 and blockchain application development , including smart contract development and blockchain protocol integration Solid experience with backend development using Java/Spring, Node.js, or equivalent enterprise frameworks Proficiency in Solidity smart contract development, including testing frameworks (Hardhat, Foundry, Truffle) and security best practices Hands ...

contracts written in Solidity or equivalent languages, ensuring security, correctness, and gas efficiencyIntegrate Web3 libraries and SDKs (e.g., Web3J, Web3JS, Ethers.js, Viem) into enterprise Java and/or Node.js backend servicesImplement asynchronous, event-driven architectures to handle on-chain events, transaction lifecycle management, and blockchain state synchronizationCollaborate with architects … development foundationProven hands-on experience in Web3 and blockchain application development, including smart contract development and blockchain protocol integrationSolid experience with backend development using Java/Spring, Node.js, or equivalent enterprise frameworksProficiency in Solidity smart contract development, including testing frameworks (Hardhat, Foundry, Truffle) and security best practicesHands-on experience with ...

offices and a robust customer base across North America, Europe, and Asia Pacific. Overview of the Role We are seeking a Senior/Intermediate Java Engineer to join our R&D team. The role focuses on backend and middleware development using Java 17 and Spring, working across a distributed, high … availability system with kdb+ integration and strong security requirements. Key Responsibilities Develop, maintain, and optimise Spring-based web applications and REST APIs using Java 17. Integrate backend services with real-time kdb+ environments. Implement authentication (SAML/LDAP) and secure authorisation (RBAC/ABAC). Participate in distributed system design ...

Talan is looking for a talented Java Developer with React experience to join our team delivering cutting‐edge Front Office solutions within Global Markets environments. You will play a key role in designing and enhancing regulatory, alerting, and sales enablement platforms , directly supporting front‐office users and business stakeholders across … Provide 3rd line support and assist in troubleshooting production issues Participate in code reviews and continuous improvement initiatives Skills & Experience (Required) Strong experience in Java (server‐side development) Experience building web‐based applications and REST APIs Good understanding of application performance and optimisation Excellent communication skills, both written and verbal ...

Virtual Hire Staffing is seeking a Mid/Senior Java Web Engineer for a leading global financial markets infrastructure client in London. The role involves hands-on work across backend services and web UI, delivering a modular end-to-end trade management platform in collaboration with architects and frontend developers. … Requirements include strong Java with Spring Boot, REST APIs, React knowledge, SQL/PostgreSQL, Git, and Maven/Gradle; 4–8+ years of experience; and an Agile, Linux/Unix #J-18808-Ljbffr ...

here: Home/Job Search/Senior Java Engineer (Front Office/Fixed Income) Location: London AMS is the world's leading provider of Talent Acquisition and Management Services. Our Contingent Workforce Solutions (CWS) service, partner with Deutsche Bank to support contingent recruitment processes. On behalf of Deutsche Bank … looking for a Senior Java Engineer (Front Office/Fixed Income) for a 6 Months contract based in London (Hybrid 3 times per week in the office) . Deutsche Bank is a global banking business with strong roots in Germany and operations in over 70 countries. Their large but focused ...

Java DeveloperUp to 105,000Quant Capital is urgently looking for a Java Developer to join a pioneering tech start-up. Our client is an innovative company with a pioneering new concept for the financial markets with their big data technology platform. They have assembled a top team from across … expand to meet high demand from clients. The role: This is a senior role and would suit a candidate with 5+ years of Java development experience. The successful candidate will be a talented Java developer with a passion for solving engineering problems and delivering business functionality. The role will involve ...

Core Java Developer – Fintech90,000 Plus 10% to 40%Quant Capital is urgently looking for a Core Java Developer to join a well known trading firm. No experience of finance is needed, finance isn't what this firm does, tech is. Our client is an innovative tech driven trading (Equities … order of multi millions not 3 guys in a shed. The role: This role and would suit a candidate with 2-10 years of Java Development experience. The successful candidate will be a top tier Java developer (or aspiring, half of the team don't have a comp sic degree ...

close knit, agile team. You will be the Java expert, utilising a Spring framework to build and evolve their internal systems. This work will have a genuine impact on the business, so you must have an awareness of what influence your code will have on the company. The wider technology … team, through a combination of mentoring and paired programming. This is your chance to be the go to person for everything backend and Java related. The company has an exciting list of projects, seeing you collaborate with the C-suite so your code makes a genuine effect on the direction ...

compliant responsible AI usage patterns and controls. Требования: Formal training or certification in software engineering concepts; Recent hands-on professional experience as a Java back-end software engineer; Experience coding in a recent version of Java; Experience designing and implementing unit, component, integration, end-to-end, and performance tests; Excellent ...

Loyalty in London is seeking a Senior Software Engineer to shape our Pricing Service, building scalable backend services in Java and Spring Boot. You will own features end‐to‐end, from design through production, within a collaborative engineering team supporting Avios and loyalty ecosystems. You will work with AWS cloud ...

Senior Software Engineer to shape our Pricing Service, the engine behind Avios rewards. You’ll design, build and operate cloud-native services using Java, Spring Boot and AWS, influencing technical direction while mentoring peers. You’ll work in a collaborative product engineering team, delivering resilient back-end features ...

seeking a Lead Software Engineer who still enjoys coding and will lead a small team in London two days a week. You will write Java/Spring Boot code, help shape system design and architecture, and work with AWS, Kafka, and AI tooling on distributed, real-time services. #J ...

full software lifecycle. Mentor peers, drive engineering excellence and partner with stakeholders to translate business needs into technical outcomes. You will work with Java/JavaScript, microservices, Azure, CI/CD, and modern DevOps practices in a collaborative environment that values security and quality. #J-18808-Ljbffr ...

Software Engineer/DevOps Engineer Opportunity | Digital Assets Team in London Are you ready to shape the future of financial platforms with Java, cutting-edge cloud technology, and digital innovation? Our globally renowned client is expanding its London-based team, collaborating with colleagues in the US and Asia to build … integration, this is the perfect opportunity to make an impact in the financial technology space! What You'll Do: Build and maintain Java-based applications and develop REST APIs focusing on AWS/Azure cloud integrations. Ensure robust cloud networking security, including protocols and communication between systems. Design and deploy ...

Overview The Senior Java Engineer at NCG will play a pivotal role in designing and implementing high-quality software solutions within the ITES sector. This role is crucial in driving technical innovation and ensuring the robustness, performance, and scalability of applications. Collaborating with cross-functional teams, the engineer will contribute … providing exceptional IT solutions. This role offers the chance to work in a stimulating environment where innovative ideas are encouraged and valued. The Senior Java Engineer will not only apply their technical skills but also mentor junior engineers, fostering a culture of continuous learning and improvement. In this role ...