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Developer Java United Kingdom, London Jobs (Hybrid work)

26 Job Offers

Lead Java Developer
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Lead Java Developer sought by Citi in London to engineer the future of global finance. You will lead real-time risk enhancements for Credit products, leveraging Core Java, Microservices, and AWS. This senior role demands expertise in JVM tuning, Kafka, and Front Office risk calculations. Enjoy 27...
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Citi
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Java Developer
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Join Barclays in London as a Java Developer. Design and enhance low-latency, high-throughput connectivity applications for global Futures and Options trading. Utilize Core Java and scripting skills within critical financial systems. Enjoy extensive benefits including private medical care, pension...
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Barclays
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Fx Risk Java Developer
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Join Citi's Markets Technology as an FX Risk Java Developer (VP) in London. You will design and implement core Java solutions using JDK11+, multithreading, and data structures for front-office systems. The role requires experience with SQL/NoSQL databases, messaging queues, and TDD. We offer a co...
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Citi
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Java Full-Stack Developer
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Join our Core Risk team in London as a Java Full-Stack Developer. You will rebuild and migrate legacy systems using modern Java, Angular, and Cloud tools like Kubernetes. This impactful role requires financial services experience and offers excellent benefits including private medical care and pe...
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Barclays
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FX eTrading Java Developer - VP
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Citi
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Java (Kotlin) Developer
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Join Citi's Tech team in London to engineer the future of global finance. As a Java/Kotlin Developer, you'll build core Prime Brokerage platforms using Agile and CI/CD practices. We seek proven developers with expertise in Java and Test-Driven Development. Enjoy a competitive package including bo...
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Citi
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Until further notice

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.