C# Developer

Location: London (Hybrid)
Contract: 6 months (initial)
Day Rate: Competitive (Via Umbrella)

We are seeking an experienced Senior C# Developer to join a high-performing PnL Explain development team within a leading investment bank. The role focuses on building and enhancing a large-scale Risk & PnL data warehouse platform alongside a front-office web-based reporting and sign-off application. This is an excellent opportunity to work on business-critical systems within a fast-paced front-office environment.

• Participate across the full Agile Scrum lifecycle, including:
  • Collaborating with stakeholders to define and refine user stories
  • Developing high-quality, well-structured code with appropriate unit testing
  • Contributing to code reviews and ensuring quality prior to production release
  • Providing 3rd line support for production systems
• Take ownership of key deliverables and projects across multiple applications
• Design, build, and maintain robust and scalable solutions within a data-heavy environment
• Contribute to the development and continuous improvement of DevOps pipelines, including CI/CD and artefact management
• Drive improvements in engineering processes, introducing modern best practices for coding, testing, and release management
• Refactor and optimise existing codebases to enhance performance, scalability, and maintainability
• Mentor and support junior developers, promoting best practices and technical excellence across the team

• Extensive experience in software engineering, with a proven track record delivering complex, enterprise-scale systems
• Expert-level knowledge of C# / .NET Framework, including multi-threading and design patterns
• Strong experience with SQL Server and T-SQL development
• Exposure to ClickHouse or similar high-performance database technologies
• Experience with front-end technologies such as Angular, or desktop UI development using WinForms
• Solid understanding of Agile methodologies and DevOps practices
• Strong communication skills, with the ability to collaborate effectively with both technical and non-technical stakeholders
• Excellent analytical and problem-solving abilities

• Experience working within Investment Banking / Front Office environments
• Knowledge of Risk, PnL, or reporting systems
• Exposure to large-scale data platforms or data warehousing solutions

• Opportunity to work on front-office, business-critical systems
• Exposure to large-scale data engineering and reporting platforms
• Collaborative, high-performing engineering culture
• Strong likelihood of contract extension

Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy.