Job Title: Senior C# / .NET Developer – Financial Services (Risk / Securities Lending)
Location: London (Hybrid)
Duration: 6 Months contract
Job Description
Role Overview
* We are seeking an experienced C# / .NET Developer to join a technology team supporting critical Financial Services platforms, with a strong focus on Risk Management and/or Securities Lending domains.
* The role involves designing, building, and supporting high performance systems used for risk calculations and trading/financing workflows.
* You will work closely with quants, risk managers, business analysts, and product owners to deliver robust, scalable solutions in a regulated environment.
Key Responsibilities
* Design, develop, and maintain C# / .NET applications supporting Risk or Securities Lending platforms
* Build and consume RESTful APIs to integrate with upstream/downstream systems
* Implement scalable, testable, and maintainable object oriented code following best practices
* Contribute to risk workflows including exposure calculations, limits, and reporting
* Work with large data sets and high throughput systems typical of financial services
* Participate in code reviews, architectural discussions, and technical design sessions
* Collaborate with cross functional teams (Risk, Front Office, Operations, Compliance)
* Support production systems and assist with incident analysis and remediation
Required Skills & Experience
Core Technical Skills
* Strong hands on experience with C# and .NET (.NET Core / .NET)
* Excellent Object Oriented Programming (OOP) skills and design principles
* Proven experience designing and implementing APIs (REST / JSON)
* Solid understanding of application architecture, performance, and scalability
* Experience with SQL databases (e.g. SQL Server)
* Familiarity with unit testing, integration testing, and CI/CD pipelines
Financial Services Domain Knowledge (Essential)
* Experience working in Financial Services technology environments
* Strong domain knowledge in at least one of:
* o Risk Management
* o Securities Lending / Prime Brokerage
* o Collateral, Margin, or Financing platforms
Nice to Have
* 10+ years experience
* Experience with cloud platforms (Azure / AWS)
* Messaging technologies (e.g. Kafka)
* Experience in front to back trading or financing systems
* Familiarity with Agile / Scrum delivery methodologies