> Markdown version of [/jobs/ext/3525363-java-software-developer](https://www.wearedevelopers.com/jobs/ext/3525363-java-software-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Software Developer - **Company:** Fasanara Digital - **Location:** London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Apache HTTP Server, Software Debugging, Programming Tools, Digital Assets, Distributed Systems, Reference Data, Software Engineering, Kotlin, Event Driven Architecture, Production Code, Apache Kafka, Code Restructuring - **Published:** October 1, 2026 - **Apply:** https://www.apply4u.co.uk/jobs/java-software-developer/49518590 ## About the Role improving, and scaling established code.The successful candidate will ideally bring experience from financial services, trading, banking, or digital assets, although strong distributed systems experience from another high-performance environment will also be considered.ResponsibilitiesDevelop, maintain, and enhance our multi-venue collateral management system supporting 24/7 trading activity.Build resilient distributed, real-time, and event-driven systems with high-availability requirements.Build and maintain integrations with trading venues to source account, position, collateral, and other operational data.Design reference data frameworks and accounting pipelines supporting both traditional financial instruments and digital assets.Develop primarily in Java and Kotlin, contributing to architecture and technical design while remaining highly hands-on.Maintain, refactor, and improve existing production code alongside developing new functionality.Take end-to-end ownership of technical, experience.Previous experience within financial services, trading, banking, hedge funds, or fintech.Experience within cryptocurrency or digital assets.Knowledge of crypto exchanges, trading venues, protocols, or market infrastructure.Experience developing collateral, position, accounting, market data, or reference data systems.Experience with Python.Experience with Apache, Kafka or other event streaming technologies.Experience using AI-assisted software development tools.Understanding of traditional financial instruments and financial market infrastructure.Our benefits include:Performance-related Bonus SchemePrivate Medical & Dental Insurance throughBupa(including children's cover)Life Insurance, Income Protection & Critical Illness CoverEmployee Assistance Programme (EAP)Salary sacrifice pension withHargreaves Lansdown(currently matched up to 10%)Enhanced Maternity & Paternity LeaveEmergency Parental Leave, Emergency Childcare & Nursery BenefitCycle to Work SchemeCharity Giving through CAFAnnual Wellbeing BudgetTeam socials, annual Summer & Christmas parties,and other events throughout the year #J-18808-Ljbffr ## Description in a focused and sustainable way, and place a strong emphasis on teamwork, integrity, and quality in everything we do. We know we are only as good as our people, so we are deliberately building the firm around exceptional talent and diverse perspectives, and we support our leaders to grow, influence, and shape the future of the business.The RoleWe are looking for an experienced Java Software Engineer to join Fasanara Digital and take significant ownership of systems supporting our 24/7 trading activity.The role will focus on the development and maintenance of our multi-venue collateral management platform, alongside new reference data and accounting infrastructure supporting both digital assets and traditional financial markets.This is a hands-on engineering role within a small, high-performing team where engineers have a high degree of ownership and autonomy. You will work across both new development and existing production systems, designing new solutions while maintaining, problems, from design through to production delivery and ongoing support.Work closely with engineers and investment stakeholders to translate business requirements into effective technical solutions.Use modern AI-assisted development tools to improve engineering productivity and software quality.EssentialAt least 5 years of professional software engineering experience.Strong commercial Java experience.Experience designing and developing distributed systems.Experience working with real-time, event-driven, and/or high-availability production systems.Strong understanding of software engineering fundamentals, system design, and production reliability.Comfortable maintaining, debugging, and improving existing production code as well as developing new systems.Strong problem-solving and analytical skills.Ability to work independently and take ownership in a fast-paced, high-performance environment.Strong communication and collaboration skills.DesirableCommercial Kotlin