C# Full Stack Engineer

Harnham; Greater London; On-site; GBP 126,000 - 154,000; Full time

Job summary

Harnham in London is seeking a talented C#/.NET Developer to own designing, building and improving high-performance applications that support trading and analytics platforms.

You will work on large-scale data ingestion, contribute to architecture and performance optimization, and collaborate with engineers and researchers across the business. A strong foundation in C#, .NET and SQL Server is required.

Qualifications

• C# and .NET software development experience.
• Experience with SQL Server or equivalent database technologies.
• Strong software engineering fundamentals.

Responsibilities

• Developing and maintaining high-performance C#/.NET applications
• Building greenfield software solutions alongside enhancing existing platforms
• Working on large-scale data ingestion and processing systems
• Contributing to system architecture, scalability, and performance optimisation
• Collaborating closely with highly technical colleagues across engineering and research functions

Skills

C#

.NET

SQL Server

Software engineering

Job description

This is a great opportunity to join a high-growth quantitative investment and sports analytics organisation where you can take ownership of building high-performance software systems that process and analyse large-scale real-time data.

THE COMPANY

A highly successful London-based investment and technology business specialises in sports data analysis and trading. Operating globally across multiple sporting markets, the organisation leverages large volumes of historical and live data to drive investment decisions and develop proprietary trading technology.

THE ROLE

You will take ownership of designing, building, and enhancing modern C#/.NET applications that support critical trading, analytics, and data-processing platforms.

Key responsibilities include:

• Developing and maintaining high-performance C#/.NET applications
• Building greenfield software solutions alongside enhancing existing platforms
• Working on large-scale data ingestion and processing systems
• Contributing to system architecture, scalability, and performance optimisation
• Collaborating closely with highly technical colleagues across engineering and research functions

YOUR SKILLS AND EXPERIENCE

You will bring strong capability in:

• C#
• .NET
• SQL Server or equivalent database technologies
• Strong software engineering fundamentals

THE BENEFITS

• You will receive a salary of up to £140,000 depending on experience, along with a comprehensive benefits package.