C# Developer
Talan
Posted about 3 hours ago
Job Description
C# Developer – London (Hybrid, 3 Days On-Site)
Talan is looking for a talented and driven C# Developer to join a high-performing team in London. This is a hybrid role, with 3 days per week on-site, offering the opportunity to work on cutting-edge financial systems within a global markets environment.
You will play a key role in building and enhancing a distributed, real-time P&L and risk analytics platform used by Fixed Income Rates and FX trading desks globally. This system delivers predictive and live P&L insights, supporting critical trading decisions across international markets.
Working closely with developers, traders, and quantitative teams, you’ll contribute across the full development lifecycle from design and implementation to optimisation and deployment.
What You’ll Be Doing
- Developing and maintaining scalable .NET/C# services within a distributed streaming architecture
- Building and supporting real-time data processing systems for P&L and risk analytics
- Working on out-of-process services, system integrations, and data materialisation layers
- Driving Agile best practices, including test-driven development (TDD) and automation
- Collaborating with global teams across EMEA, NY, and APAC
- Taking ownership of features and proactively proposing improvements
- Troubleshooting issues and helping unblock cross-team dependencies
Essential Skills & Experience
- Strong expertise in C# / .NET development
- Experience with Redis Cluster
- Solid understanding of TDD and automated testing
- Experience with CI/CD pipelines
- Strong communication and stakeholder engagement skills
- Ability to quickly learn and adapt to new technologies
- Passion for automation, simplicity, and continuous improvement
- Strong grounding in computer science fundamentals and design patterns
- Collaborative team player with a proactive mindset
Desirable Skills
- Experience with distributed systems, streaming, and messaging (e.g. Rx .NET)
- Knowledge of performance and memory profiling
- Experience optimising systems for speed and efficiency
- Familiarity with modern CI/CD tools and practices
- End-to-end experience across the full software development lifecycle
If you're a passionate C# developer looking to work on complex, distributed systems in a fast-paced environment, we’d love to hear from you.
Additional Information
#TalanUK
Job details
Talan
IT Services and IT Consulting
About
Founded in France, Talan has grown into an international group that supports our clients in their end-to-end Data & AI transformation by combining management consulting with technological expertise. With over 6,000 employees across five continents, we accelerate our clients' transformations through long-term partnerships, creating measurable and sustainable impact. Our value proposition is built on a structured innovation ecosystem: 2,500 Data & AI experts, proprietary solutions built on advanced models, and an applied research, experimental development, and innovation laboratory. For more than 20 years, we have been translating technological innovation into competitive advantages across vital sectors: banking and financial services, energy, transport and mobility, luxury and retail, and healthcare. Driven by our promise of "Positive Innovation," we have established ourselves as a leading player in addressing the growing complexity of economic, technological, and regulatory environments.
Company Details
Key Team Members
Olivier Grosjean
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