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Developer Java United Kingdom, London Jobs

21 Job Offers

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Senior Java Developer – London – Fintech
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Senior Java Developer role in London fintech. Requires strong Core Java, front-office financial systems, E-Trading and FIX experience, plus OMS/EMS delivery. Agile environment, excellent benefits including medical, pension and gym subsidy.
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Adaptive Financial Consulting
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Senior Java Developer - eTrading
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Delta Capita
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Senior Rates Developer - Java
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Delta Capita
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Rapid Application Developer - JAVA
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Margo Conseil
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Java Developer – Front Office / Trading Systems
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Margo Conseil
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Java Developer React
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Talan
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eFX Java Algo Developer
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Talan
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Java Developer (React)
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Talan
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Senior Java Developer - Credit Risk Technology, Vice President
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Senior Java Developer role in Credit Risk Technology at Vice President level, based in London. You will lead application development using Core Java, Spring Framework, and distributed caching, driving Agile, test-driven projects. Key requirements include deep Capital Markets knowledge, derivative...
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Citi
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Java Developer
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Whitehall Resources is seeking a Java Developer with active SC clearance for a 6-month contract. This role is mostly remote, requiring occasional visits to a London client site. You will design, develop, and deploy Java-based applications using Spring Boot, RESTful APIs, and microservices. Ideal ...
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Whitehall Resources Ltd
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Java (Kotlin) Developer (Agile, Test-Driven) Avp
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Join Citi’s Prime Brokerage Technology team in London as a Java (Kotlin) Developer AVP. Engineer high-impact financial systems using Test-Driven Development, Agile, and CI/CD. Ideal for developers with expertise in Java, Kotlin, cloud, and messaging technologies. Enjoy 27 days leave, bonus, priva...
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Citi
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Full-stack Java Developer for Systematic & Credit Portfolio Trading Tools
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Join Citi as a Full-stack Java Developer in London, building systematic and credit portfolio trading tools. You'll collaborate with traders and quants to develop high-impact applications using Java, Python, and React. Leverage Kubernetes, Docker, and CI/CD pipelines in a hybrid environment. Enjoy...
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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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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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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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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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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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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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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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ATYETI
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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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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.