C# Developer - Risk IT

Harvey Nash; Greater London; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A leading investment bank based in London is seeking a C# Developer for a contract position in a hybrid work environment. The role involves designing and developing enterprise-grade solutions as part of an Agile team, with responsibilities including building middleware services and leading architecture discussions. The ideal candidate has a strong background in Computer Science and proven experience with C#, REST APIs, and microservices. Excellent communication skills and problem-solving capabilities are essential for success in this position.

Qualifications

• A strong academic background in Computer Science or Engineering.
• Proven experience in SOLID Principles and Design patterns.
• Deep knowledge of C# .NET, RESTful services, and microservice architecture.
• Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD.
• Excellent communication skills and a pragmatic approach to problem-solving.

Responsibilities

• Designing and developing enterprise-grade solutions in an Agile team.
• Building and maintaining middleware services using C#.
• Leading architecture discussions, code reviews, and release management.
• Collaborating with users and cross-functional teams to define testing strategies.
• Mentoring junior developers and contributing to internal best practices.

Skills

C#

REST APIs

XML

Microservices

SOLID Principles

Design patterns

FIX messaging

AMQ

nHibernate

OData

TDD

Communication skills

Education

Computer Science Degree or related field

Job description

C# Developer - Risk IT - sought by leading investment bank based in London - Contract - Hybrid

• inside iR35*

What You'll Be Doing

• Designing and developing enterprise-grade solutions in an Agile team.
• Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices .
• Leading architecture discussions, code reviews, and release management.
• Collaborating with users and cross-functional teams to define and execute testing strategies.
• Mentoring junior developers and contributing to internal best practices.

What You Bring

• A strong academic background in Computer Science, Engineering, or a related field.
• Proven experience in SOLID Principles / Design patterns
• Deep knowledge of C# .NET , RESTful services , and microservice architecture .
• Hands‑on experience with FIX messaging , XML , AMQ , and ideally nHibernate , OData , and TDD .
• Excellent communication skills and a pragmatic approach to problem‑solving.

Please apply within for further details - Matt Holmes, Harvey Nash