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.