Java/Scala Developer
About The RoleFDM is a global business and technology consultancy seeking a Java / Scala Developer to work for our client within the Investment Banking / Financial Services sector. This is initially a 12-month contract with the potential to extend and will be a hybrid role that will be based in London.Our client is undertaking a large-scale renovation of their Prime Brokerage and Securities Finance Technology estate, building a new consolidated platform for trade capture and post-trade processing across multiple Securities Finance transaction types. This is a high-impact delivery role within a critical programme replacing legacy systems, where the successful candidate will be expected to contribute quickly and operate with minimal hand-holding.Responsibilities: Contribute to the design and build of a new consolidated Trade Capture and Post-Trade Processing platform for Securities Finance transactions (Repo, Securities Lending, Buy/Sell Backs).Develop and enhance backend services using Java and Scala, contributing to both greenfield build and migration from legacy systems.Participate in architecture and system design discussions, including breaking down problems and justifying technical design decisions.Build and maintain mission-critical applications and GUIs used by front-office, trading, and middle-office users.Work collaboratively within an Agile development squad, delivering high-quality, well-tested code in a fast-paced environment.Review and validate AI-assisted development output (e.g. Copilot), acting as a quality gate to ensure correctness and robustness.Support the modelling and migration of Securities Finance transaction data into the new platform.Engage with peers and stakeholders to troubleshoot issues, improve system design, and contribute to delivery best practices.About YouStrong foundation in core Java development; Scala is used extensively within the team, but prior Scala experience is not mandatory if the candidate can demonstrate the ability to pick it up quickly.Solid understanding of algorithms, data structures, and core software engineering principles.Proven architecture and system design capability, including ability to decompose problems and articulate design rationale.Experience building and supporting production systems in a high-pressure delivery environment.Working knowledge of SQL / relational databases.Experience working in Agile environments, including exposure to automated testing and DevOps practices/tools.Comfortable working in an AI-assisted development environment (e.g. GitHub Copilot) and reviewing generated output critically.Strong communication skills and the ability to collaborate effectively within distributed engineering teams.Minimum of 4+ years’ experience in backend software development using Java within an enterprise or regulated environment.About UsFDM is an award-winning global leader in tech and business talent solutions, backed by more than 35 years of industry experience. We have centres across Europe, North America, and Asia-Pacific, and a global workforce of over 2500 employees. FDM has shown exponential growth throughout the years, firmly establishing itself as an award-winning employer, currently listed on the FTSE4Good Index and as a 2026 Financial Times UK ‘Best Employer’. Diversity and InclusionFDM Group is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, national origin, age, disability, veteran status or any other status protected by federal, provincial or local laws.Why join usCareer coaching, mentoring and access to upskilling throughout your entire FDM careerAssignments with global companies and opportunities to work abroadOpportunity to re-skill and up-skill into new areas, develop non-linear career paths and build a skillset within your fieldAnnual leave and work-place pension
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