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Developer Java United Kingdom Jobs

48 Job Offers

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Java Developer – SC Cleared
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We are seeking a SC Cleared Java Developer for a critical AWS migration project in the UK. You will leverage expertise in Java 11, SpringBoot, and Angular 14 to replicate backend and frontend code for a seamless cloud transition. Working closely with a Solution Architect, you will analyze technic...
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United Kingdom
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Whitehall Resources Ltd
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Senior Java Developer Integrated Financial Crime
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Senior Java Developer sought for the Integrated Financial Crime (IFC) Program in Glasgow. You will drive backend development using Java, Spring Boot, and microservices, with a path towards architecture. Key skills include RESTful APIs, Kafka, and cloud-native components on OpenShift or AWS. Benef...
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United Kingdom , Glasgow
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Barclays
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Senior Java Developer (Smart Order Routing (SOR)) - Equities Electronic Trading
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Senior Java Developer sought for VP-level role in Equities Electronic Trading in Belfast. You will design and optimize a core low-latency Smart Order Router (SOR) using high-performance Java and microservices. Requires expert JVM internals, concurrency, and FIX protocol knowledge. Benefits includ...
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United Kingdom , Belfast
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Citi
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Java Software Developer
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Join Barclays in London as a Java Software Developer to design scalable pricing systems and automate financial workflows. Leverage your Core Java expertise and financial services experience in a Linux environment. Collaborate with a skilled engineering team to build client automation solutions an...
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United Kingdom , London
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Barclays
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Java Developer
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Seeking a skilled **Java Developer** for a hybrid role in **London**. You will build scalable enterprise applications using **Java 11+**, **Spring Boot**, and **microservices**. The role offers a competitive salary, private healthcare, and a flexible hybrid model (2-3 days in-office). Ideal for a...
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United Kingdom , London
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Myn
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Lead Java Developer (VP)
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Lead Java Developer (VP) sought by Citi in London to engineer the future of global finance. You will lead a team building high-volume, low-latency microservices using Java/Spring, with expertise in Fixed Income and Security Financing. This VP role demands deep Java internals knowledge and cloud-b...
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United Kingdom , London
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Citi
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FX E-Trading Technology Java Developer - VP
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Join Citi as an FX E-Trading Technology Java Developer (VP) in London. Drive ultra low-latency trading solutions, replacing legacy systems and collaborating with trading and quant teams. Requires deep FX knowledge, hands-on Java expertise, and strong communication skills. Enjoy 27 days leave, bon...
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United Kingdom , London
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Citi
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Lead Java Developer (VP)
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Lead Java Developer (VP) at Citi in London. Engineer mission-critical systems for global finance, influencing $5 trillion daily transactions. Requires extensive Java, distributed systems, and leadership experience. Benefit from hybrid work, 27 days leave, private medical care, and a discretionary...
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United Kingdom , London
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Citi
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Java Developer
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Join Citi’s London Tech team as a Java Developer and engineer the future of global finance. You’ll design microservices, build RESTful APIs, and leverage AI tools like GitHub Copilot, requiring 3-8 years of Java, Spring Boot, and Kafka experience. Enjoy 27 days leave, a bonus, private medical car...
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United Kingdom , London
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Citi
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Java Developer
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Join Citi’s Tech team in Belfast as a Java Developer to engineer the future of global finance. You’ll build scalable microservices using Java 11+, Spring Boot, and Kafka, while leveraging AI tools like GitHub Copilot. Enjoy hybrid work, 27 days leave, private medical care, and a performance bonus...
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United Kingdom , Belfast
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Citi
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Technology Application Strategy - Java Developer - Assistant Vice President
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Join Citi as a Productivity & Tooling Java Developer (AVP) in London. Build microservices with Java, SpringBoot, and Gradle to empower a global developer community. Drive CI/CD pipelines and clean code in a hybrid role. Enjoy 27 days leave, bonus, private medical, and pension.
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United Kingdom , London
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Citi
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Efx Senior Java Developer
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Join UBS Global Markets as an eFX Senior Java Developer in London. You will design low-latency, high-throughput algorithmic trading platforms, collaborating with quantitative analysts on pricing and execution strategies. This role involves full ownership of initiatives, from market connectivity t...
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United Kingdom , London
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ATYETI
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Java (Kotlin) Developer (Agile, Test-Driven) Avp
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United Kingdom , London
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Citi
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Full Stack Developer (Java / React)
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United Kingdom , Basingstoke
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Office Angels
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Java (Kotlin) Developer (Agile, Test-Driven)
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Senior Java/Kotlin Developer needed to engineer the future of global finance at Citi in London. Drive innovation on the Core Prime Brokerage platform using TDD, cloud technologies (Kubernetes), and messaging systems (Kafka). Lead an agile team, champion CI/CD, and enjoy 27 days leave, bonus, and ...
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United Kingdom , London
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Citi
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Senior Java Developer (AVP)
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Senior Java Developer (AVP) at Citi in Belfast. Join a global team redefining finance, building high-scale systems that process $5 trillion daily. You will develop robust applications using Core Java, Spring Boot, and Microservices, with hands-on AI tool experience. Enjoy 27 days leave, bonus, pr...
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United Kingdom , Belfast
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Citi
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Java (Kotlin) Developer (Agile, Test-Driven) Avp
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Join Citi as a Java (Kotlin) Developer (AVP) in London and engineer the future of global finance. You'll drive agile, test-driven development on the Core Prime Brokerage platform, leveraging CI/CD and automated testing. Essential skills include Java, TDD, and Kotlin experience is a plus. Enjoy 27...
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United Kingdom , London
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Citi
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Lead Java Developer
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Lead Java Developer sought by Citi in Belfast to define architecture and build scalable, high-performance applications. You will leverage Java, RESTful services, and AI-powered tools while mentoring junior team members. This role demands expertise in clean coding, SOLID principles, and code quali...
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United Kingdom , Belfast
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Citi
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Java Quantitative Developer
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Join a leading institutional digital asset firm as a Java Quantitative Developer on their London crypto trading desk. You will design and ship algorithmic trading strategies, build pricing and hedging frameworks, and optimize low-latency systems. Strong Java skills and front-office experience wit...
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United Kingdom , London
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170000.00 GBP / Year
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Harrington Starr
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Fx Risk Lead Java Developer - Vice President
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Senior Java Developer role at Citi in London, UK, focused on FX Risk and high-throughput systems. You will design microservices, optimize Apache Ignite in-memory grids, and build real-time data pipelines with Kafka. Requires deep Core Java, JVM tuning, MongoDB, and cloud expertise. Benefits inclu...
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United Kingdom , London
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Citi
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About the Developer Java role

Explore the dynamic world of Java developer jobs, a cornerstone of the modern technology landscape. Java developers are the architects and builders behind a vast array of robust, scalable, and secure software applications that power everything from enterprise-level banking systems and e-commerce platforms to web services and mobile applications. This profession is centered on using the Java programming language and its extensive ecosystem to translate complex business requirements into functional, efficient, and maintainable software solutions. For those with a passion for problem-solving and a logical mindset, a career in Java development offers immense opportunity and stability.

A Java developer's typical responsibilities encompass the entire software development lifecycle. This begins with analyzing user needs and collaborating with business analysts and product managers to define technical specifications. They then design application architecture, write clean, well-documented code, and perform unit testing to ensure quality. A significant part of the role involves debugging and troubleshooting issues to maintain application health and performance. Many Java developers are also responsible for deploying applications to servers and providing ongoing maintenance and support, including implementing new features and security patches. In more senior or lead positions, responsibilities expand to include mentoring junior team members, making high-level architectural decisions, driving best practices in coding standards, and collaborating with cross-functional teams to ensure successful project delivery.

The skill set for Java developer jobs is both deep and broad. A strong foundation in core Java concepts such as object-oriented programming (OOP), multithreading, and collections is non-negotiable. Proficiency with popular Java frameworks is essential, with Spring (including Spring Boot and Spring MVC) and Hibernate being among the most sought-after. As many roles involve building web applications, knowledge of full-stack development is increasingly common, encompassing front-end technologies like HTML, CSS, and JavaScript (often with frameworks like React or Angular). Understanding relational databases (e.g., PostgreSQL, MySQL) and SQL is crucial, as is experience with building and consuming RESTful web services. Familiarity with development tools such as Maven or Gradle, Git for version control, and Jenkins for CI/CD pipelines is standard. Beyond technical prowess, successful Java developers possess strong analytical thinking, excellent problem-solving abilities, and effective communication skills to collaborate within a team.

Typical requirements for these positions often include a bachelor’s degree in computer science, software engineering, or a related field, although substantial equivalent experience is frequently accepted. The profession offers a clear career trajectory, from entry-level developer roles to senior, lead, and architect positions. With Java's enduring popularity and its application in critical systems worldwide, Java developer jobs remain in high demand, offering a rewarding career path for those dedicated to building the technology that drives our digital world.