Senior .Net Developer

Job Title: Senior C# / .NET Developer – Financial Services (Risk / Securities Lending)

Location: London (Hybrid)

Duration: 6 Months contract

Job Description

Role Overview

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• 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.
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• The role involves designing, building, and supporting high performance systems used for risk calculations and trading/financing workflows.
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• You will work closely with quants, risk managers, business analysts, and product owners to deliver robust, scalable solutions in a regulated environment.
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Key Responsibilities

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• Design, develop, and maintain C# / .NET applications supporting Risk or Securities Lending platforms
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• Build and consume RESTful APIs to integrate with upstream/downstream systems
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• Implement scalable, testable, and maintainable object oriented code following best practices
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• Contribute to risk workflows including exposure calculations, limits, and reporting
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• Work with large data sets and high throughput systems typical of financial services
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• Participate in code reviews, architectural discussions, and technical design sessions
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• Collaborate with cross functional teams (Risk, Front Office, Operations, Compliance)
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• Support production systems and assist with incident analysis and remediation
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Required Skills & Experience

Core Technical Skills

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• Strong hands on experience with C# and .NET (.NET Core / .NET)
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• Excellent Object Oriented Programming (OOP) skills and design principles
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• Proven experience designing and implementing APIs (REST / JSON)
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• Solid understanding of application architecture, performance, and scalability
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• Experience with SQL databases (e.g. SQL Server)
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• Familiarity with unit testing, integration testing, and CI/CD pipelines
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Financial Services Domain Knowledge (Essential)

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• Experience working in Financial Services technology environments
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• Strong domain knowledge in at least one of:
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• o Risk Management
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• o Securities Lending / Prime Brokerage
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• o Collateral, Margin, or Financing platforms
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Risk & Regulatory Experience (Highly Beneficial)

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• Exposure to risk and regulatory methodologies such as:
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• o RWA (Risk Weighted Assets)
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• o CCAR
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• o Basel III / Basel IV frameworks
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• Understanding of credit risk, counterparty exposure, or capital calculations is a strong advantage
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Nice to Have

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• 10+ years experience
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• Experience with cloud platforms (Azure / AWS)
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• Messaging technologies (e.g. Kafka)
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• Experience in front to back trading or financing systems
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• Familiarity with Agile / Scrum delivery methodologies
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Personal Attributes

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• Strong problem solving and analytical mindset
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• Comfortable working in complex, regulated environments
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• Able to communicate effectively with both technical and non technical stakeholders
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• Proactive, delivery focused, and detail oriented
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