Senior C# WPF UI Developer

Senior C# / WPF UI Developer Multi‑Asset Risk – Front Office IT Poland (Remote) Overview We’re working with a Major Investment Bank on a Front Office IT role within their Multi‑Asset Risk function. This is a dedicated UI position, focused on building and supporting a rich WPF desktop application used directly by traders to monitor intraday risk across FX Options and Commodities. This is a mature, business‑critical platform with a strong roadmap of new features alongside ongoing support and bug fixing. They’re looking for a fully rounded .NET developer who can own work end‑to‑end, communicate well, and operate confidently in a Front Office environment. The Platform The application is a high‑throughput, compute‑intensive desktop system used by traders to: • Monitor intraday risk on individual books and portfolios • Analyse hundreds of granular risk measures (Greeks and beyond) • Run multiple dynamic reports as market conditions evolve throughout the day The backend is entirely Java (risk calculations farmed out to compute engines). This role sits squarely in the C# / WPF UI layer. What You’ll Be Doing • Developing new UI features on a large, mature WPF application • Fixing bugs and improving stability on a business‑critical front office system • Working closely with Front Office users, other UI engineers, and backend teams • Owning issues from investigation through to resolution rather than passing them on What They’re Looking For Core skills • Strong commercial experience with C# and WPF • Solid .NET fundamentals and confidence working in large codebases • Experience building rich desktop UIs with high data volumes • Rx / reactive programming experience is a plus, but not mandatory Mindset & behaviours (very important) • A genuine self‑starter who takes ownership and follows things through • Comfortable working in Front Office IT – not just a “head‑down coder” • Strong communicator who collaborates rather than sitting on problems • Someone trusted to make changes without introducing unnecessary risk • Pragmatic, competent, and commercially aware Team & Location • UI team is based in London hours • Global Front Office presence (Singapore, London, New York) • Fully remote role Contract Details • At least 12 months of work • Long‑running, stable programme with an established codebase