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Senior Java Developer United Kingdom Jobs

10 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 - Contractor
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Delta Capita
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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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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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Senior Developer (Java and React)
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Senior Developer (Java and React) sought for our Glasgow Investment Banking team. You will design and build high-performance trading and regulatory platforms, leveraging strong full-stack engineering skills with backend depth and UI ownership. This role demands hands-on problem-solving, cloud & D...
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Barclays
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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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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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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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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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Citi
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About the Senior Java Developer role

Explore senior Java developer jobs and discover a pivotal career at the heart of modern software engineering. A Senior Java Developer is an experienced professional responsible for designing, building, and maintaining high-performance, scalable, and secure enterprise-grade applications. This role transcends basic coding, involving deep architectural contributions and technical leadership within development teams. Professionals in these positions are instrumental in transforming business requirements into robust technical solutions, ensuring system reliability, and driving technological innovation.

Typically, the core responsibilities of a Senior Java Developer encompass the entire software development lifecycle. They lead the design and implementation of application architecture, often focusing on microservices and distributed systems. Writing clean, efficient, and well-documented code using core Java and modern frameworks like Spring Boot is fundamental. They develop and integrate RESTful APIs, design data persistence layers using both SQL and NoSQL databases, and implement security protocols. A significant part of the role involves mentoring junior developers, conducting rigorous code reviews, and advocating for best practices in code quality and testing. Furthermore, they collaborate closely with cross-functional teams including product managers, business analysts, and DevOps engineers to define requirements, troubleshoot complex issues, and ensure timely project delivery.

The typical skill set for these senior roles is extensive and evolving. A strong foundation in Core Java (including versions 8 and above) and the Spring ecosystem (Spring Boot, Spring Cloud, Spring Security) is essential. Expertise in microservices architecture, containerization with Docker, and orchestration with Kubernetes is highly common. Proficiency in building event-driven systems using messaging platforms like Kafka, alongside experience with CI/CD pipelines and tools like Jenkins and Git, is expected. Beyond technical prowess, successful candidates demonstrate excellent problem-solving abilities, a keen understanding of system design patterns, and a commitment to writing testable code using frameworks like JUnit. Familiarity with cloud platforms (AWS, Azure, GCP) and front-end technologies (like Angular or React) is often a valuable asset. Senior developers are also expected to possess strong soft skills: clear communication, the ability to lead initiatives, a growth mindset adaptable to new technologies like AI tooling, and a collaborative spirit focused on continuous improvement.

When searching for senior Java developer jobs, candidates should be prepared for roles that demand both deep technical expertise and strategic influence. These positions offer the opportunity to work on critical systems, guide technical direction, and play a key role in an organization's digital transformation. Whether focusing on backend services, full-stack development, or specialized domains, senior Java developers are the cornerstone of building resilient and forward-looking software platforms.