21 of 21 Contract Java Developer Jobs in London

Senior Java Developer Inside IR35 - 3 days onsite Our banking client is seeking an experienced Senior Java Developer to join their dynamic technology team. This role offers the opportunity to work on high-impact financial applications, driving innovation and excellence in software development within a fast-paced and regulated environment. As a Senior Java Developer … you will play a key role in designing, developing, and maintaining enterprise-grade applications, while mentoring junior engineers and helping shape technical strategy. Key Responsibilities Design, develop, and maintain Java-based applications and services . Write clean, efficient, and well-documented code . Participate in code reviews and provide constructive feedback. Collaborate with cross-functional teams to define, design … and deliver new features . Troubleshoot and debug complex issues. Required Qualifications Professional Java software development experience. Strong understanding of object-oriented programming and design patterns . Hands-on experience with Spring and Hibernate frameworks. Solid experience with relational databases (MSSQL, Oracle). Proven experience with RESTful API design and development . Strong background in unit, regression, and integration More ❯

Job Title: Senior Java Developer Role Summary: We are looking for a highly skilled Senior Java Developer to design, develop, and maintain enterprise-grade applications. The role involves working closely with architects, business analysts, and cross-functional teams to deliver scalable, secure, and high-performing solutions. Key Responsibilities: Design, develop, and implement robust Java-based … compliance with security standards. Troubleshoot, debug, and resolve complex production issues. Contribute to continuous improvement in development processes and tools. Required Skills & Experience: 5–8+ years of experience in Java/J2EE application development. Strong knowledge of Core Java, Spring Framework (Spring Boot, Spring MVC, Spring Security), Hibernate/JPA. Hands-on experience with RESTful APIs, Microservices architecture More ❯

Early Careers Java Developer Our Tier 1 Investment Banking client is looking for a highly skilled Early Careers Java Developer to join their London based team for a 12 months initial contract with a view to hiring permanently. Skills Required: Ideally achieved 2:1 or higher in relevant degree Core Back end Java Skills An More ❯

Senior Java Developer Contract - Analytics/Risk/PnL/Caching/AWS/PostgreSQL/Kafka/TDD Our leading investment banking client is looking for a Senior Java Developer to join them on an initial 12 month contract. Skills Required Derivatives, risk management and trading, market risk Market Data Financial Market exp Investment Banking … development experience Java 17+ dev experience Apache Kafka Postgre SQL Contract - Central London based - flexible working - paying market leading rates By applying to this job you are sending us your CV, which may contain personal information. Please refer to our Privacy Notice to understand how we process this information. In short, in order to supply you with work finding More ❯

Job Title: Calypso Java Developer Start Date: As soon as possible Location: Threadneedle Street, London (4 days per week onsite) Salary/Rate: Up to £600/day INSIDE IR35 Job Type: 12 month contract - very likely to extend Company: Global software consulting - joining the financial arm of the business Responsibilities: We are looking for a Senior Software … take part in capacity planning and design activities, and work with colleagues within FI & Derivatives team and beyond to help deliver best-in-Class systems. Qualifications: Undergraduate Degree Strong Java Developer needs to have experience designing/building distributed applications, JVM tuning, multi-threading Strong Calypso Experience Capital Market Knowledge Trade Management SQL Knowledge/Oracle DB Linux More ❯

Senior Java Developer - Glasgow - Investment Banking - Data/Spring/Linux/SQL/SDLC/Equity Primary responsibilities: The developer will work within an agile squad developing within a system comprising of numerous Java services that interact via messaging to produce the product outputs in Real Time. Technologies and techniques such as highly multi-threaded … Java, Sharded Mongo DB and caching are used in the stack to provide the scale and performance that the product requires. Skills: - Core Server Side Java including Data Structures and Concurrency - Spring, Junit - Linux - Relational Databases (Sybase and/or DB2 is preferable) with ability to write SQL queries - Understanding of message-based architectures - Good Problem solving and … by the applications - Knowledge and desire to use agile software development practices Skills Desired: - JMS, MQ, Kafka - MongoDB - Knowledge of a range of common Open Source libraries used in Java development - Database performance tuning (relational and document) - Python/Shell Scripting - Financial domain knowledge (eg Equities) Glasgow based - hybrid - Inside IR35 By applying to this job you are sending More ❯

Senior Java Developer - Credit, E-Trading, Algo sought by leading investment bank based in the city of London.**Inside IR35 - 4 days on site** The role: Project work also includes enhancements to the auto-quoting and algo framework for pricing, offering, and quoting. Will specifically focus on engagement, framework design and development of deliverables for Credit Cash electronic … design and progress. Must have: Hardworking, dedicated, detail oriented, focused on quality and a team player, with effective verbal and written communications. Extensive hands-on coding in server-side Java with strong emphasis on Java Concurrency, RX Streams, Caching (GridGain as Cache), Collections API, Messaging and Event processing across multiple streams Solid coding experience in multi-cast messaging … with relational DB (SQL Server, Sybase, Oracle) Solid technical design experience of low latency trading application services Dev Ops tools (Maven, Jenkins, Nexus, Helios) experience. Overall 7+ Years of Java dev Experience Minimum of 2 years' experience in Linux/UNIX/Shell scripting Banking Domain Experience (Capital Markets/Banking/CM Front Office/Risk) A strong More ❯

Job Description: We are seeking an experienced Java Developer proficient in enterprise Java, Spring Boot, microservices, Angular, and Linux. The successful candidate will contribute to designing, developing, and maintaining high-performance applications. Application Development: Design, develop, and maintain Java applications using Spring Boot. Microservices: Implement and manage microservices architecture. Front-End Integration: Develop front-end interfaces More ❯

I am currently working with a London-based financial services client who are actively seeking a Senior Java Developer to aid in the development of a business-critical application. What you'll need to succeed Extensive development experience with Java 17+ within financial services - mandatory. Expertise in distributed programming with distributed cache/data grids. Strong cloud More ❯

My client within Investment Banking is looking for a Java developer to join their team. The role will be working on their Equities position keeping systemRequirements Core Java object-oriented design and development principles Multi-faceted role (development, testing, support analysis, release co-ordination) developing in Linux, multi-threaded, large scale, fault tolerance systems Azul Zing, FIX More ❯

My client within Investment Banking is looking for a Java developer to join their team. The role will be working on their Equities position keeping system Requirements Core Java object-oriented design and development principles Multi-faceted role (development, testing, support analysis, release co-ordination) developing in Linux, multi-threaded, large scale, fault tolerance systems Azul Zing More ❯

Senior Java Engineer Location: London (1-2 days a week in the office, mandatory on Thursdays) Experience: Minimum 8-10 years Technical Skills: Proficiency in Java 8 (transitioning to Java 17) Retail banking experince Experience with Spring Boot 2.4 and above Knowledge of Continuous Integration Apigee Java Testing API experience If all the above skills match More ❯

Job Title:Software Engineer( Backend Developer) Location:London Contract: 6 Months with potential extension (Inside IR35) Commute- Max 2 days in office Payrate : £63 - £84 Per Hour Inside IR35 About the Role We are seeking a Java Backend Developer for the FinTech business unit of a leading global digital travel platform. If you are a Java Backend Developer with 5 to 12 years of experience then this opportunity is for you. This role involves building innovative regulatory technology solutions to ensure compliance and manage risks. The engineer will work on a mission-critical platform that uses state-of-the-art technology for sanctions screening and other regulatory processes. The position requires developing highly scalable … and mentoring junior engineers. What We're Looking For 5- 12 years of experience (not more than 12 years) in software development with at least 2 server-side languages - Java being must have. Experience working in Kubernetes environment. Proven experience with microservices architecture and scalable, distributed systems. Proficient in data technologies like MySQL . Experience with batch processing , data More ❯

Role: Backend Developer Contract: 6 months Location: Canary Wharf, London Working model: Hybrid - 3 days onsite We're looking for a talented Backend developer with strong Java and Node.js/TypeScript experience to join a dynamic development team within a leading financial services organisation. This role is ideal for someone who enjoys working across both backend development … and infrastructure, collaborating with centralised DevOps teams, and contributing to modern, large-scale financial services platforms. What You'll Do Maintain and enhance scalable back-end applications using Java, Node.js, and TypeScript. Lead the migration of existing Node.js systems into Java to align with bank-wide infrastructure strategy. Work closely with DevOps teams, utilising Docker and Kubernetes for … integration tests to ensure high code quality. Collaborate with cross-functional teams to define, design, and deliver new features. What We're Looking For 5+ years' experience as a Java & Node.js/TypeScript developer. Hands-on experience with Docker, Kubernetes, GitHub Actions (CI/CD). Strong knowledge of SQL databases. Proven track record writing unit & integration tests. Strong More ❯

We are seeking a talented mid-Level Backend Developer with experience in both Java and Node.js/TypeScript for an exciting 6-month contract role with a global financial services client in Canary Wharf. This position offers a daily rate of £700 via an umbrella company. The Role You will be an integral part of our development team … with a focus on both backend development and infrastructure-related tasks. A key part of your role will be to refactor an existing codebase from Node.js to Java to align with the bank's infrastructure strategy and address technical debt. You will also be responsible for maintaining existing scalable backend applications. This is a hands-on role where you … will contribute high-quality code and robust software solutions while working with the team to meet tight deadlines. Key responsibilities include: Maintaining existing scalable backend applications using Java, Node.js, and TypeScript. Migrating backend applications to Java to align with the bank's preferred infrastructure. Utilising Docker and Kubernetes for containerisation. Implementing CI/CD pipelines using GitHub Actions. More ❯

We are seeking a talented mid-Level Backend Developer with experience in both Java and Node.js/TypeScript for an exciting 6-month contract role with a global financial services client in Canary Wharf. This position offers a daily rate of £700 via an umbrella company. The Role You will be an integral part of our development team … with a focus on both backend development and infrastructure-related tasks. A key part of your role will be to refactor an existing codebase from Node.js to Java to align with the bank's infrastructure strategy and address technical debt. You will also be responsible for maintaining existing scalable backend applications. This is a hands-on role where you … will contribute high-quality code and robust software solutions while working with the team to meet tight deadlines. Key responsibilities include: Maintaining existing scalable backend applications using Java, Node.js, and TypeScript. Migrating backend applications to Java to align with the bank's preferred infrastructure. Utilising Docker and Kubernetes for containerisation. Implementing CI/CD pipelines using GitHub Actions. More ❯

Job Description: We are looking for a talented Java Developer with expertise in Swing and FX trading to join our team in London/Bromley. Develop and maintain Java applications with a focus on Swing for front-end development. Collaborate with traders and quants to create and enhance trading and pricing tools. Implement real-time data processing More ❯

Full Stack Developer - Active SC, Java, Spingboot, React Up to £550 per day (Inside IR35) London/Remote 3 months initially My client is an instantly recognisable Consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. Key Requirements: Proven experience working as a Full Stack Developer, with Active Security Clearance … SC) Expertise in a range of technologies, including Java (8, 11, 17+), Spring/Springboot, React/HTML AWS Cloud Service experience Working experience with MySQL Nice to have: Technical hands on experience with Terraform/Kibana/Apache Camel Linux in a containerised environment Immediate availability If interested, with relevant experience, please apply with your latest CV ASAP. More ❯

Full Stack Developer - Active SC, Java, Spingboot, React Up to £550 per day (Inside IR35) London/Remote 3 months initially My client is an instantly recognisable Consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. Key Requirements: Proven experience working as a Full Stack Developer, with Active Security Clearance … SC) Expertise in a range of technologies, including Java (8, 11, 17+), Spring/Springboot, React/HTML AWS Cloud Service experience Working experience with MySQL Nice to have: Technical hands on experience with Terraform/Kibana/Apache Camel Linux in a containerised environment Immediate availability If interested, with relevant experience, please apply with your latest CV ASAP. More ❯

An Investment Banking client is currently hiring for a Full Stack Java/React Developer to join their Front office IT Team.The initial contracts will be for 6 months rolling paying £900-£1000 per day via an Umbrella company. The positions require 3 days attendance per week to the London office. Required experience: Previous experience working as a … Full stack Developer with experience in both Java & React Experience working in the Front office ideally or in Trading environments Please share an updated CV ASAP if you'd like to be considered for the position and I'll be in touch if suitable. Please click here to find out more about our Key Information Documents. Please note More ❯

An Investment Banking client is currently hiring for a Full Stack Java/React Developer to join their Front office IT Team. The initial contracts will be for 6 months rolling paying £900-£1000 per day via an Umbrella company. The positions require 3 days attendance per week to the London office. Required experience: Previous experience working as … a Full stack Developer with experience in both Java & React Experience working in the Front office ideally or in Trading environments Please share an updated CV ASAP if you'd like to be considered for the position and I'll be in touch if suitable. Please click here to find out more about our Key Information Documents. Please More ❯