C# Developer

Summary: The role is for a Senior C# Developer on an 8-month contract in London, focusing on a brokerage project. The position requires leading the design and development of high-performance software, with a hybrid working arrangement of three days on-site. Candidates should have extensive experience in C# development and cloud infrastructure, particularly with AWS. The role emphasizes technical leadership, mentoring, and collaboration within Agile teams.

Key Responsibilities:

• Lead the design and development of high-performance software.
• Bridge the gap between application code and cloud infrastructure.
• Build scalable systems and automate deployments using AWS CDK with Python.
• Drive technical excellence by mentoring engineers and enforcing security and testing standards.
• Collaborate with cross-functional teams to deliver robust solutions aligned with business goals and Agile timelines.

Key Skills:

• Minimum 5+ years of experience as a C# Developer.
• Strong knowledge of core AWS Database services.
• Hands-on experience with Infrastructure as Code, specifically using AWS CDK in Python.
• Experience with automated testing frameworks and good understanding of unit testing principles.
• Strong experience with Agile environments.
• Excellent problem-solving skills and strong leadership/collaboration skills.
• Strong knowledge of microservices architecture in cloud environments.
• Strong understanding of database design and experience with relational and/or NoSQL databases.
• Experience with Docker for containerisation.
• Familiarity with Kubernetes.
• Proficiency in using Git and JIRA.
• Background with CI/CD pipelines + tools.
• Experience writing documentation.
• Background in the finance sector (preferred).

Salary (Rate): undetermined

City: London

Country: United Kingdom

Working Arrangements: hybrid

IR35 Status: inside IR35

Seniority Level: Senior

Industry: IT

Detailed Description From Employer:

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***Senior C# Developer - 8 Months Contract Role - London (Hybrid) Inside IR35***

RED now has a new contract opportunity for a C# Developer to join one of our key partners for a brokerage project. The initial contract will be for 8 months with excellent extension opportunities.

This contract is to start 14^th of May and will be hybrid with 3 days pr week on-site in London, United Kingdom.

Role responsibility:

As a Senior C# developer, you will lead the design and development of high-performance software while bridging the gap between application code and cloud infrastructure. You are responsible for building scalable systems and automating deployments using AWS CDK with Python, ensuring seamless integration and high availability. Beyond hands-on coding, you will drive technical excellence by mentoring engineers, enforcing security and testing standards, and collaborating with cross-functional teams to deliver robust solutions that align with business goals and Agile timelines.

Specific skills/experience required:

• Minimum 5+ years of experience as a C# Developer
• Strong knowledge of core AWS Database services
• Hands-on experience with Infrastructure as Code, specifically using AWS CDK in Python
• Experience with automated testing frameworks and good understanding of unit testing principles
• Strong experience with Agile environments
• Excellent problem-solving skills, and strong leadership/collaboration skills with the ability to work in tight deadlines
• Strong knowledge of microservices architecture in cloud environments
• Strong understanding of database design and experience with relational and/or NoSQL databases
• Experience with Docker for containerisation
• Familiarity with Kubernetes
• Proficiency in using Git and JIRA
• Background with CI/CD pipelines + tools
• Experience writing documentation
• Background in the finance sector (preferred)

If interested, please send an updated CV to jisaksen@redglobal.com with availability and rate. We have already received interview slots for tomorrow and Thursday!

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Reference
CR/132992_1774960818

Date
31 Mar 2026

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