Job Description

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• Core .NET & C# Skills: A senior .NET engineer must have deep expertise in C# (generics, async/await, LINQ, reflection, delegates and events), the .NET ecosystem (Core / .NET 5+, Framework, Standard), ASP.NET Core (Web API, middleware pipeline, dependency injection, filters), and Entity Framework Core (migrations, query optimisation, relationships). Strong understanding of the CLR, memory management, and garbage collection is expected.
• Architecture & Design: They should be comfortable designing systems using SOLID principles, design patterns (Factory, Repository, CQRS, Mediator, Decorator), clean/hexagonal architecture, microservices and service-oriented architecture, and domain-driven design. Experience with API design (REST, GraphQL, gRPC) is increasingly important.
• Data & Storage: Proficiency with SQL Server (query tuning, indexing, stored procedures, transactions), ORMs (EF Core, Dapper), NoSQL databases (Redis, MongoDB, Cosmos DB), and basic data modelling.
• Cloud & DevOps: Hands-on experience with at least one major cloud platform — Azure (App Services, Functions, Service Bus, AKS) is most common in the .NET world. CI/CD pipelines (Azure DevOps, GitHub Actions), containerisation (Docker, Kubernetes), and infrastructure-as-code (Bicep, Terraform) are expected at senior level.
• Testing & Quality: Strong unit testing (xUnit, NUnit, MSTest), integration testing, mocking (Moq, NSubstitute), TDD/BDD mindset, code review practices, and static analysis tools (SonarQube, Roslyn analysers).
• Security: Authentication and authorisation (OAuth 2.0, OpenID Connect, JWT, ASP.NET Identity), OWASP awareness, secrets management, and secure coding practices.
• Performance & Observability: Profiling and benchmarking (.NET Diagnostics, BenchmarkDotNet), distributed tracing and logging (Serilog, OpenTelemetry, Application Insights), and caching strategies.

About the Role

We are looking for an experienced Senior Software Engineer with strong .NET and C# expertise to join our engineering team. You will design and build scalable software solutions, lead technical decisions, and mentor junior engineers in a fast-paced, collaborative environment.

What You'll Do

• Design and develop robust APIs and microservices using ASP.NET Core
• Lead code reviews and drive engineering best practices across the team
• Optimise application performance and database queries (SQL Server)
• Collaborate with product and architecture teams to deliver high-quality solutions
• Mentor and guide junior and mid-level developers

What We're Looking For

• 6+ years of software development experience with C# / .NET
• Strong knowledge of ASP.NET Core, Entity Framework, REST API design
• Experience with Azure cloud services, Docker, and CI/CD pipelines
• Solid understanding of SOLID principles, design patterns, and clean architecture
• Good communication skills and ability to work in an Agile team