Senior Java/C# Developer

Lisbon · Hybrid · Front Office Technology

Join a global Front Office engineering team within one of Europe’s largest and most stable banking groups. The FX eTrading IT department delivers cutting‑edge technology directly to the worldwide FX business, powering real‑time pricing, trading, booking and risk platforms used across London, New York, Tokyo, Singapore and beyond.

Within this group, the Booking, Positions & STP team builds and maintains the core services responsible for trade booking, lifecycle management, real‑time positions and straight‑through‑processing—critical components relied upon by traders every day. Our mission is to evolve these high‑performance, grid‑based systems into strategic, scalable platforms supporting the bank’s global growth.

This is an exceptional opportunity for a highly motivated developer to work in a fast‑paced Front Office environment, collaborating directly with traders, quantitative teams and senior technologists.

What You Will Do

As part of this multidisciplinary team (Java & C#), you will:

• Develop and enhance the Position & Trade Booking Platform , a mission‑critical component of the global FX eTrading ecosystem
• Ensure software is built to the highest standards of performance, security and reliability
• Participate in the full Agile lifecycle: analysis, design, development, documentation, testing and peer reviews
• Work directly with traders, providing L3 support and contributing to rapid issue resolution
• Support production teams with releases, monitoring and system stability
• Contribute to architecture discussions, propose technical improvements and shape long‑term platform strategy
• Lead developers when required, offering guidance through mentoring, pair programming and code reviews
• Engage in migration and refactoring initiatives to modernise and optimise platform components
• Analyse business requirements and translate them into high‑quality technical solutions

Technical Skills Required

Core Experience

• 5+ years’ experience in enterprise software development, including 2+ years in a lead role
• Strong background in electronic trading platforms or other high‑load, distributed systems
• Experience with Java Core (SE, multithreading, low-latency, optimisation) – Mastery level
• Practical knowledge of C#
• Solid understanding of SDLC – Mastery level
• Experience in Agile/Scrum delivery environments
• Exposure to refactoring/migration of legacy systems to modern architectures

Nice to Have

• Experience with Oracle Coherence , grid computing or distributed caching
• Real‑time messaging protocols
• Front Office experience in FX, FX Options or Interest Rates
• Ability to analyse and design high‑performance architectures
• Strong quantitative background and ability to understand FX products and pricing flows