Lead Java Developer

About Phi Partners

Phi Partners has been a trusted capital markets consultancy for more than 20 years, providing quantitative and technology expertise across front office, pricing and risk. We support more than 80 financial institutions across the buy-side and sell-side through niche capabilities spanning quant, engineering, vendor platforms and cloud infrastructure. Our teams work on complex, real-world problems across models, analytics, applications, data and cloud infrastructure, within an international delivery organisation built around regional hubs and specialist centres of excellence.

For people who enjoy technically demanding work in capital markets, Phi offers the opportunity to work closely with expert colleagues and major financial institutions on high-value, business-critical initiatives.

Role &

Responsibilities

We are looking for a hands-on Lead Java Developer to deliver high-performance e-trading and risk solutions for top-tier financial institutions. This role combines coding, technical leadership, and stakeholder engagement, helping clients modernize and maintain mission-critical systems:

• Lead design, development, and maintenance of Java-based trading and risk applications.
• Own the full SDLC for critical systems, ensuring high-quality, scalable, and low-latency solutions.
• Build high-throughput, fault-tolerant services for pre/post-trade risk, market data, and order management.
• Collaborate with business stakeholders, quants, and analysts to translate requirements into robust solutions.
• Drive technical standards, code quality, and best practices across teams, including code reviews and testing strategies.
• Mentor junior engineers and promote best practices in development and deployment.
• Ensure systems meet regulatory, operational, and security requirements.

Key Skills

Necessary

• Strong Java expertise (Core Java, Spring/Spring Boot, REST APIs, microservices)
• Excellent hands-on experience building multi-threaded, high-performance systems
• Strong SQL skills and experience working with relational databases
• Excellent track record as a Technical Lead owning delivery and providing technical guidance
• Proven expertise in client communication, stakeholders, and team management
• Experience taking ownership of the entire SDLC, from development to deployment and testing

Nice to have

• Capital Markets experience, leading teams for eTrading or Risk platforms
• Hands-on experience building reactive, non-blocking systems using Spring WebFlux, Reactor, or RxJava
• Degree in Computer Science, IT or related fields

Next steps

This is an excellent opportunity to join a world-leading Capital Markets consultancy which offers the chance to accelerate your career by working with multiple elite financial institutions.

If you are interested in this opportunity, please apply below. We look forward to speaking with you and discussing your application in more detail at your earliest convenience.