Senior C# .NET Developer (Hybrid)

Senior C# .NET Developer

Mayfair, London - Hybrid (1 - 2 days per week in the office)

£68,000 - £72,000 per annum

The Role

Our client is hiring a backend C# .NET Developer to join their engineering team in a hybrid role (1 - 2 days per week in the office). You ll help build and maintain high-performance backend systems that support searching, order processing, and background processes with a strong focus on both application logic and data access.

This role is ideal for someone confident in both C#/.NET development and SQL, and who enjoys working on clean, maintainable code and performance-optimised database logic.

What You ll Be Working On:

• Designing and building backend services in C#.
• Building secure, well-structured APIs with throttling and versioning.
• Developing durable workflows.
• Writing efficient and scalable SQL queries, stored procedures, and scripts.
• Integrating external systems with custom data synchronisation logic.
• Utilising Open Telemetry and Grafana for logs, metrics, tracing, and alerting across backend services.
• Contributing to technical design discussions, code reviews, and deployments.

What They re Looking For:

• Strong experience in C#/.NET backend development.
• Solid understanding of data modelling, indexing, and performance tuning.
• Skilled in writing and optimising complex SQL queries and stored procedures.
• Experience building and maintaining APIs, background jobs, and integration points.
• Attention to detail, clean code, and a performance-first mindset.
• Great problem-solving and troubleshooting skills.
• Good communication and teamwork skills.

What You ll Get:

• £70,000 Salary.
• 25 days holiday + 8 public holidays.
• Employer Pension contribution.
• Flexible hybrid working (1 - 2 days per week in-office).
• A collaborative, experienced development team.
• Opportunities to grow, learn, and influence architecture.
• Company lunch and activities.

About Our Client

Founded in 2009, this tech-driven company revolutionized the IT channel by creating an automated platform that enables resellers to buy, sell, and procure IT hardware in one centralized, trade-only environment. What started with strong foundations in the UK has grown into a lean, international operation, with a close-knit team based in central London.

If you're a C# Developer with strong SQL skills and enjoy working on well-architected, business-critical backend systems, they would love to hear from you.

Apply now and bring your backend and database expertise to the next level.