Senior Backend Java Developer This is an office-based role in London, Monday to Friday Financial Services £70,000 - £80,000 Are you an experienced Java Developer looking for a truly impactful role? My client, a leading FCA-regulated trading brokerage, is building a brand-new, best-in-class trading and investment platform, and they need your expertise! This is a unique opportunity to join a growing team of technologists and finance professionals, taking technical ownership from day one on a greenfield project. What you'll do: Develop, design, and maintain high-quality, scalable, and secure trading applications. Write clean, testable, and maintainable code. Implement APIs and seamlessly integrate third-party services. Actively contribute to code reviews and troubleshoot production issues. What we're looking for: Minimum 8 years of Java development experience. Strong expertise in Enterprise Java, Spring/Spring Boot, Web, Security, ORM, Junit/Mockito, Maven/Gradle. Command of SQL/NoSQL, Hibernate/Spring Data. Demonstrable experience in designing and implementing REST APIs. Solid understanding of modern SDLC practices. Experience in financial applications, Open Banking, AWS, DevOps, Docker/K8S is a plus! Why join my client? Greenfield Project: No legacy systems, no tech debt. Direct Impact: Shape the future of a mission-critical flagship product. Growth Opportunity: Join early and grow with the expanding team. Innovative Culture: Be part of a unique startup culture within a well-established group, embracing AI applications in finance and software development. Excellent Benefits: Competitive salary, performance bonus, private healthcare, gym discount, pension scheme, and a collaborative environment. Candidates must be eligible to work in the UK; no visa sponsorship is provided.