Front office C# Developer

Location: London Working Pattern: Hybrid, 3 days per week in the office Sector: Investment Banking / Financial Services Level: Vice President Employment Type: Permanent The Opportunity We are working with a leading global investment bank seeking an experienced VP-level C# Software Engineer to join its Front Office Securities Financing Technology function in London.

This is an opportunity to take technical ownership within a global engineering team responsible for developing and supporting business-critical trading platforms. The organisation is investing significantly in its technology capabilities, evolving from a predominantly Microsoft-based environment towards a modern, cloud-enabled architecture incorporating C#, .NET Core, Java, AWS, Kafka and Redis .

The successful candidate will combine strong hands-on engineering expertise with the ability to independently design, architect and deliver complex software solutions supporting global trading operations. Key Responsibilities Design, develop and enhance high-performance C#/.NET applications supporting front office trading and securities financing activities.

Take technical ownership of projects from initial requirements and architectural design through development, deployment and production. Contribute to the modernisation of existing applications and the development of strategic cloud-based platforms.

Design scalable, maintainable solutions using modern software engineering principles and distributed technologies. Work collaboratively with engineering teams and business stakeholders across London, New York and Asia. Evaluate technical approaches, make architectural decisions and drive engineering best practices.

Leverage AI-assisted development tools to improve engineering productivity, code quality and delivery efficiency. Essential Experience Strong commercial software engineering experience using C# and .NET , with excellent programming fundamentals.

Proven experience designing and delivering complex enterprise applications within investment banking or capital markets. Knowledge of Securities Lending, Stock Loan, Securities Financing, Equity Financing or Equity Swaps .

Demonstrable experience taking ownership of technical architecture and delivering substantial projects independently. Strong understanding of object-oriented design, data structures, algorithms and software engineering principles.

Experience working with relational databases such as SQL Server or MySQL. Ability to articul...

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