C# Full Stack Engineer - Ownership, Growth & Hybrid Flex

Harnham; Greater London; On-site; GBP 65,000 - 85,000; Full time

Benefits offered by this job

Performance-related bonus

Private healthcare

Pension

Exposure to complex engineering/challl

Collaborative environment

Career growth opportunities

Central London office with flexible on

Job summary

Harnham in London is seeking a C# Full Stack Engineer to design, build and maintain applications using C# and .NET, with a mix of greenfield and existing systems. You will contribute to architecture, optimise performance, and own projects from design through deployment, collaborating with engineers and stakeholders across the business.

The role offers a collaborative, low-hierarchy environment and clear opportunities for career progression, with an office-based setup in Central London, plus

Qualifications

• Strong C# and .NET development experience.
• Solid understanding of software engineering fundamentals and best practices.
• Experience with SQL databases and data-driven applications.
• Write clean, maintainable, and efficient code.
• Strong problem-solving and communication skills.
• Demonstrable interest in continuous learning and technical development.
• Multi-threaded and performance-focused application development.
• Version control with Git.
• Distributed systems or network programming experience.
• Computer Science or related STEM education.

Responsibilities

• Design, build, and maintain applications using C# and .NET.
• Work on a combination of greenfield development and existing systems.
• Contribute to system architecture and technical decision-making.
• Develop scalable, high-performance software solutions.
• Collaborate closely with engineers and stakeholders across the business.
• Support performance optimisation and continuous improvement initiatives.
• Take ownership of projects from design through to deployment.

Skills

C# development

.NET

SQL databases

Clean code

Problem solving

Communication

Continuous learning

Multi-threaded

Distributed systems

Education

Computer Science or STEM education

Tools

Git

Job description

Harnham in London is seeking a C# Full Stack Engineer to design, build and maintain applications using C# and .NET, with a mix of greenfield and existing systems. You will contribute to architecture, optimise performance, and own projects from design through deployment, collaborating with engineers and stakeholders across the business.

The role offers a collaborative, low-hierarchy environment and clear opportunities for career progression, with an office-based setup in Central London, plus