Senior C# Developer
Location: London (Fully Onsite)
Employment Type: Permanent
Salary: 50,000 – 70,000 (DOE)
Visa Sponsorship: Not available
We’re working with a London-based organisation that is looking to hire an experienced Senior C# Developer to join their engineering team in a fully onsite position. This role is ideal for someone who enjoys hands‑on development, working closely with the business, and taking ownership of complex systems.
The Role
As a Senior C# Developer, you’ll be responsible for designing, developing, and maintaining business‑critical applications built on C#/.NET and SQL. You’ll play a key role in technical decision‑making, improving code quality, and ensuring the reliability and performance of core systems.
You’ll work closely with other developers, QA, product owners, and non‑technical stakeholders, contributing across the full software development lifecycle.
Key Responsibilities
- Design, develop, and maintain applications using C# / .NET
- Write, optimise, and maintain SQL queries, stored procedures, and database schemas
- Contribute to technical architecture and system design discussions
- Carry out code reviews and promote best development practices
- Support and mentor junior and mid‑level developers
- Troubleshoot, debug, and improve existing systems
- Collaborate closely with business and technical teams onsite
Essential Skills & Experience
- Strong commercial experience as a Senior C# Developer
- Advanced knowledge of C# / .NET
- Strong experience working with SQL (SQL Server or similar)
- Experience delivering and supporting production‑grade applications
- Solid understanding of software design principles and best practices
- Comfortable working in an onsite London-based team
- Strong communication and stakeholder engagement skills
Desirable Skills
- Experience with modern .NET versions
- Exposure to cloud platforms (Azure, AWS, or similar)
- Experience with RESTful APIs
- Familiarity with Agile / Scrum environments
What’s On Offer
- Salary of 50,000 – 70,000 depending on experience
- onsite role in London
- Opportunity to work on business‑critical systems
- Collaborative, experienced engineering team
- Long‑term stability and career progression
Apply Now
If you’re a Senior C# Developer looking for an onsite role in London where you can have real technical ownership and work on complex systems, we’d love to hear from you.
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