Full-Stack .NET Engineer – Design, Build & Own (London onsite)

Harnham; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Harnham is seeking a Full-Stack Software Developer to join our London team to build and enhance high-performance C#/.NET applications. You will work on greenfield projects, real-time data systems, and complex engineering challenges in a fast-paced, data-driven environment.

You will own projects from design to delivery, shape system architecture, optimize performance, and collaborate with cross-functional engineers across multiple concurrent initiatives. 5 days a week in the office.

Qualifications

• Strong commercial experience with C# and .NET.
• Experience building backend systems and full stack applications.
• Solid understanding of software engineering fundamentals and best practices.
• Experience with relational databases such as SQL Server or similar.
• Ability to communicate technical concepts clearly and effectively.
• Proactive approach to learning and professional development.
• Interest in sports and understanding of how major sports are played and structured.

Responsibilities

• Building and maintaining C# and .NET applications used across the business.
• Working on both greenfield development and enhancements to existing systems.
• Contributing to system architecture, design decisions, and performance optimization.
• Developing scalable solutions that process and manage large volumes of data.
• Collaborating with highly skilled engineers in a cross-functional environment.
• Taking ownership of projects and contribute ideas throughout the development lifecycle.
• Working on a variety of technical challenges across multiple concurrent initiatives.

Skills

C#/.NET

Backend development

Software engineering fundamentals

SQL Server

Communication

Learning agility

Sports interest

Job description

Harnham is seeking a Full-Stack Software Developer to join our London team to build and enhance high-performance C#/.NET applications. You will work on greenfield projects, real-time data systems, and complex engineering challenges in a fast-paced, data-driven environment.

You will own projects from design to delivery, shape system architecture, optimize performance, and collaborate with cross-functional engineers across multiple concurrent initiatives. 5 days a week in the office.