Java Developer - London

About The Role

FDM is a global business and technology consultancy seeking an AVP Java Developer to work for our client within the Banking & Financial Services sector. This is initially a 12-month contract with the potential to extend and will be a hybrid role based in London.

Our client is looking for a skilled Java Developer to join their Electronic Trading Technology team, supporting business-critical trading platforms and market access solutions. Working closely with Front Office stakeholders, technology teams and infrastructure partners, you will contribute to the development, enhancement and support of low-latency trading systems used across the FICC business.

Responsibilities

• Develop, enhance and support electronic trading applications and market access platforms.
• Deliver technology solutions that support front-office trading and electronic execution activities.
• Collaborate with traders, technology teams and business stakeholders to understand requirements and implement strategic enhancements.
• Contribute to the design, development and deployment of high-performance trading applications.
• Work with market data and trading infrastructure platforms to ensure system availability and performance.
• Participate in technical design discussions, code reviews and Agile development ceremonies.
• Support platform upgrades, integrations and ongoing technology improvements.
• Investigate and resolve complex production issues, providing Level 3 support where required.
• Monitor application performance and contribute to performance optimisation initiatives.
• Work closely with global development teams to deliver scalable and resilient technology solutions.

About You

• Experience developing enterprise applications using Java.
• Background working within financial markets, investment banking or electronic trading environments.
• Understanding of electronic trading systems, market data platforms or market connectivity technologies.
• Experience working within Linux-based environments.
• Knowledge of networking concepts and distributed systems.
• Familiarity with FIX protocol, market data feeds or exchange connectivity would be advantageous.
• Experience using source control and CI/CD tooling such as Git and Jenkins.
• Understanding of software development best practices and the full Software Development Life Cycle.
• Strong analytical and problem-solving skills.
• Excellent communication skills with the ability to engage effectively with both technical and business stakeholders.
• Ability to work independently while contributing positively within a collaborative team environment.

Desirable Skills

• Exposure to algorithmic trading or electronic execution platforms.
• Experience with KDB+/Q.
• Knowledge of C++.
• Experience working within Front Office technology teams.
• Understanding of low-latency application development and performance optimisation.

About Us

FDM 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'.

Why join us

• Career coaching, mentoring and access to upskilling throughout your entire FDM career
• Assignments with global companies and opportunities to work abroad
• Opportunity to re-skill and up-skill into new areas, develop non-linear career paths and build a skillset within your field
• Annual leave and work-place pension