C# / .NET developer
Hybrid
London, United Kingdom
Freelance
21-03-2025
Job Specifications
We're Hiring: C# Developer – Risk & PnL Platform | Investment Banking | London (Hybrid)
Seniority Level: Mid-Senior Level
Type: Permanent or Contract via Margo
Location: London – Hybrid (2-3 days onsite)
Join Margo, a tech-native consultancy delivering high-value IT expertise to global financial markets. We partner with tier-one investment banks to solve complex technical challenges – from low-latency systems to high-volume real-time data pipelines.
We’re currently looking for a skilled C# Developer to join the Credit and Rates Risk & PnL IT team at one of our leading investment banking clients. You’ll contribute to a strategic global platform that supports real-time risk and PnL analysis used by traders and risk managers worldwide.
What You’ll Do
Build and enhance service-oriented backend components for real-time, high-throughput risk and PnL systems
Ensure UI responsiveness and efficiency under load
Collaborate with quants, traders, and dev teams across London, Paris, Glasgow, Lisbon, and Mumbai
Apply Agile and test-driven development practices, with a focus on automation
Take full ownership of your developments – from idea to deployment
What We're Looking For
5+ years' experience in C# / .NET development
Practical knowledge of .NET Reactive Extensions (Rx)
Proven experience with performance optimization (CPU/memory) in real-time systems
Solid skills in TDD, profiling, and automated testing
Strong communication skills and ability to work effectively in distributed teams
Background in computer science fundamentals and design patterns
Nice to Have
Familiarity with actor models (Orleans, Akka.NET)
Exposure to functional programming (especially F#)
Knowledge of Language Extensions
Interested in this opportunity?
Apply now or DM me for more info – let’s build the future of finance tech together.
#Hiring #CSharp #DotNet #FinTech #RiskIT #PnL #RealTimeData #Margo #FinanceTech #LondonJobs #ITJobs
About the Company
More than a simple IT consulting group, MARGO is an alchemy of talents with constantly enriched expertise, always encouraged to be dynamic and to flourish. For more than 17 years, we have been carrying out missions of the highest technical complexity, enabling the digital acceleration of our clients, while ensuring a perpetual intellectual and collective stimulation for all our talents. At MARGO it's Consultant First. By joining MARGO, your talent today will remain relevant tomorrow. We bring you into the group not only... Know more
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