151 to 175 of 216 Java Jobs in London

/CD and Continuous Deployment pipelines Take operational ownership of services, ensuring reliability and performance in production Essential Skills & Experience Strong experience in Java development, including: Core Java Spring Boot frameworks Proven experience building distributed backend systems Hands-on experience with Kafka (or similar streaming platforms) Experience with Scala ...

Java Quantitative Developer London – Hybrid Java, Low Latency, Algo Trading, Pricing, Hedging, FX/Crypto, DeFi, AWS The company This is an unmissable opportunity for an experienced Java Quantitative Developer to join the crypto trading desk of one of the leading institutional digital asset firms in the market. With … markets. Build pricing logic and hedging frameworks that drive the desk's market making activity. Translate trader and quant ideas into efficient, production-grade Java code. Optimise existing trading systems for speed, reliability and scalability. Integrate new data sources and ensure data integrity for accurate model input. Monitor and troubleshoot ...

Full-Stack Developer (React Native/Java) | London Hybrid | FinTech | Outside IR35 | React, React Native, Java, AWS | £450-500/day A growing financial technology company is scaling its engineering team as it builds the next generation of modern web and mobile products for global users. With continued investment into … deliver secure, high-performance products in a collaborative engineering environment. Required experience: 6+ years of full-stack engineering experience Strong React Native experience Strong Java backend development experience Experience building REST APIs and microservices Strong SQL/NoSQL knowledge (Postgres, MongoDB, Redis) Experience with CI/CD and deployment processes ...

Manager for its Investor Services division in London. This hybrid role requires significant experience in Product Management within Financial Services, strong technical literacy in Java, and the ability to understand AI/ML technologies. The successful candidate will drive product strategy, manage complex programs, and ensure stakeholder engagement to enhance ...

test specialist, you will work alongside our business analysts to understand client requirements and define and execute test scenarios. Essential Skills: Performance Testing Cucumber Java JIRA Confluence Desirable Skills: JMeter AWS Tooling UK Location & Post Code: Project expect resources to be in office a minimum of 3 days a week ...

full SDLC and appreciation of front office architecture and design tradeoffs performance resiliency observability controls Technical fluency to engage engineers effectively eg Java awareness and SQL knowhow to support technical walkthroughs data analysis and troubleshooting Skills Mandatory Skills : BFS - Data Analysis, BFS - Generic Randstad Technologies is acting as an Employment ...

Strong integration and architecture documentation skills Experience in either: Front Office: transport ticketing hardware (Cubic, S&B, INIT preferred) Back Office: payments, transaction processing, Java/.NET/Oracle, acquirer integrations Details Duration: 6 months (likely extension) Location: London (50% onsite, Pier Walk) Interview: 2-stage process (remote + formal ...

title : Java and Fidessa Developer - Equities Trading Location : Bromley - Hybrid working Salary : £85,000 - £100,000 + Benefits + Bonus Start date : ASAP Working hours : 40 hours per week We are working with one of the largest global BFSI organisations, operating at scale across international markets, who are looking … experienced Java and Fidessa Developer to support and enhance their front office trading platforms. In this role, the Java and Fidessa Developer will be working in a fast-paced front office environment, supporting equities trading systems and contributing to the stability and performance of business-critical platforms. The Java ...

roadmap, owns the build and maintenance of products E2E and actively pushes the codebase forward for scale. Our Tech Stack Backend and Infrastructure: Latest Java microservice, Spring Boot with Spring Cloud, DynamoDB, Terraform, Docker, AWS Fargate, Datadog, Opslevel, and TeamCity. Frontend and Mobile: TypeScript, CSS‐in‐JS (Styled Components), React … availability, reliability, and performance issues. Experience mentoring and guiding engineers with a range of experience. Strong expertise in any object‐oriented language, preferably in Java, and a desire to learn more. Perks of the job Flexible working : Spend 3 days a week with your team in our new collaborative London ...

Java Software Developer £600/day Inside IR-35 for an initial 6 months with extension likely London - 3 days per week on site Active SC Clearance essential We're looking for a Java developer to join an established engineering team working on backend services hosted in Azure click apply ...

production support across multi country store environments. The role suits a hands on specialist with deep Xstore expertise who can move comfortably between configuration, Java development, integration xkybehq and live operational supp Please click on the apply button to read the full job description ...

real-time environments. Applicants should hold a Master's degree in Machine Learning or a related field and possess experience with programming languages like Java or C++. The company offers immigration support and a competitive salary package. #J-18808-Ljbffr ...

architecture and design (architecture, design patterns, reliability, and scaling) of new and current systems. Experience programming with at least one modern language such as Java, C++, or C# including object‐oriented design. Master's degree in Machine Learning, Applied Mathematics, Operations Research or a related field, or equivalent work experience. ...

Head of Engineering - Java, Javascript, Cloud, Healthcare Up to £850 per day (Inside IR35) London/Hybrid (3 days onsite) 6 months My client is a high-profile organisation seeking a Head of Engineering to lead a team of Software Engineering Managers, driving the development and transformation of technology products. … This role requires deep technical expertise (Java, Javascript, Azure/GCP) and a proven ability to build high-performing engineering functions in fast-paced, complex environments. You will play a key role in a wider transformation programme, introducing modern engineering practices, improving architecture, and delivering scalable, consumer-facing digital products. ...

team that delivers scalable, reliable, and innovative solutions that accelerate scientific discovery. Key responsibilities: Design and implement graph-based search services. Develop applications using Java , Spring Boot, Spring, GraphQL , and GraphQL Federation . Integrate with databases, web services, or AWS services (Neo4j, DynamoDB, RDS, S3, Parameter Store, SQS, SNS, Kinesis … professional software engineering experience in distributed systems or search platforms . Proven track record building scalable backend systems and APIs. Strong expertise in Java and the Spring Boot ecosystem . Hands-on experience with GraphQL API/REST APIs design. Solid background in cloud-native architectures with AWS and Kubernetes ...

Active Security Clearance (SC), and with proven team lead experience to join a business-critical programme. Key Requirements: Proven experience working as a Lead Java Developer within the public sector Demonstrable team lead/leadership experience - ability to guide developers, support technical decision making, and ensure delivery standards Active Security … Clearance (SC) Expertise in a range of technologies, including Java 8 and 17+, Spring/Spring Boot, React/HTML AWS Cloud Services experience Working experience with MySQL Nice to have: Technical hands-on experience with Terraform, Kibana, Apache Camel Linux in a containerised environment Immediate availability ...

Barcelona, Manila and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions. We are now looking for Java Developer services on an exciting project! THE SERVICES REQUIRED: A JVM lover who really enjoys working with the latest technologies and design patterns Eager … PROVIDING THE SERVICES WILL HAVE THE FOLLOWING EXPERIENCE: Significant, professional server-side software development experience Solid experience programming using Core Java. Exposure to Java 17+ is a plus Experience with REST, Spring web flux V.6 , REDIS General familiarity with data structures such as sets, hashes, caches etc Experience developing Front ...

Skills Experience: Solution Architecture with a clear focus on E-commerce platforms or API/Middleware ecosystems. Technical Stack: Expert-level knowledge of Node.js, Java (Spring Boot), and PostgreSQL - able to read and critique vendor code, not just high-level diagrams. Integration Expert: Deep proficiency in API management patterns, Webhook ...

channels. Integrate quantitative models and new market data feeds into the pricing platform. Produce detailed technical designs aligned to solution architecture. Implement high‐quality Java server‐side components, applying industry‐standard development patterns. Build simulation and back‐testing environments; investigate regression issues where required. Conduct automated unit, integration, and performance … cyber vulnerabilities, contributing to strong risk and control governance. Participate in intraday or overnight support rota when required. Required Technical Skills Strong server‐side Java development experience, including multithreading. Experience building global, distributed systems in a real‐time trading environment (24x5.5). Proven experience developing Rates or FX pricing systems ...

platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Accepting applications until: 31 July 2026 Job Description Job title: Junior Java Developer - DAX Exchange Are you an early-career engineer who wants to build high-performance systems that power digital advertising at scale? As a Junior … Java Developer - DAX Exchange at Global, you'll join a small, focused team building performance-critical services in modern Java. You'll work on the matching engine that connects advertisers with outdoor screens and, over time, live radio and on-demand audio. You'll contribute to production code from ...

annum ***CANDIDATES MUST BE UK NATIONALS AND ELIGIBLE FOR SC CLEARANCE*** Role Overview We are seeking an experienced Application Developer with strong expertise in Java and Web Technologies to design, develop, and support enterprise-grade applications. The role involves working across the full software development lifecycle, building scalable solutions using … Java/JEE stack, and contributing to modern, secure, and high-performing systems. You will play a key role in developing clean, reusable code, supporting live services, and mentoring junior team members while following modern engineering standards and DevOps practices. Key Responsibilities Application Development & Engineering Design, develop, and maintain applications ...

Solution Architect (Java, Spring Boot, Microservices) Location: Wembley, On-site Salary: Up to £85,000 + benefits 1 stage interview (ASAP) We're looking for an experienced Solution Architect to join a high-performing technology team delivering complex, enterprise-scale platforms. This role is ideal for someone who thrives … Experience: 5+ years in Solution Architecture Strong background in e-commerce platforms or API/middleware environments Technical Expertise: Strong knowledge of Node.js, Java (Spring Boot), and PostgreSQL Ability to review and critique code as well as architectural designs Integration & Architecture: Strong experience with API-led architecture, webhooks, and event ...

client is in the Insurance sector and is looking to grow their team with a Java Solution Architect. This is a hybrid role with 1-2 days a week in London. Client Details Our client is in the Insurance sector and is looking to grow their team with a Java … Solution Architect. This is a hybrid role with 1-2 days a week in London. Description Design and develop scalable and efficient Java-based solutions to address complex business challenges. Collaborate with cross-functional teams to understand technical requirements and translate them into practical solutions. Provide architectural guidance and ensure ...

transformation initiatives Your responsibilities: Design, develop, and maintain HCL Commerce/WebSphere Commerce Suite components and extensions. Build and enhance Back End services using Java, J2EE, Spring/Spring Boot, and REST APIs Ensure solutions meet scalability, performance, availability, and security standards Diagnose and resolve complex issues across application, integration … rollbacks Your Profile Essential skills/knowledge/experience: Strong hands - on experience with HCL Commerce/IBM WebSphere Commerce architecture Proficiency in Java, J2EE, Graph and RESTful APIs Experience with Spring/Spring Boot and Back End service development Solid understanding of relational databases especially Oracle Experience and knowledge ...

subject matter expertise on the .Net stack and contributing to technical design discussions. You'll use a range of technology including Apache Flink with Java for large scale data processing and will be able to assess and recommend new and emerging technologies, using the best tool for the job. Location … understanding of CI/CD and Infrastructure as Code (Terraform) You have cloud experience with AWS You're familiar with other languages such as Java and are open to learn new things You're comfortable with using agentic AI and tools to help improve productivity You're collaborative with great ...