Senior Backend Developer – .NET & Modern Technologies

Stack

Responsibilities

• ▹AI: agents, LLM, RAG, MCP and internal LLM models
• ▹Design and development of scalable backend solutions
• ▹C# and .NET based applications and services
• ▹APIs, integrations and microservices
• ▹System architecture and technical choices
• ▹Container-based and cloud-based environments
• ▹Event-driven and distributed systems
• ▹Code review, testing and quality assurance
• ▹CI/CD and automated development flows
• ▹Agile ways of working and close collaboration with developers, architects, product owners and other stakeholders
• ▹AI-based tools as a natural part of the development process

Requirements

• ▹Several years of professional experience in backend and system development
• ▹At least 4 years working with several of the following: C#, .NET, .NET Core, ASP.NET Core, Web API, REST API, Blazor, Vue, microservices, Entity Framework Core, SQL Server, PostgreSQL or other databases, Azure, AWS or another cloud platform, Azure Functions, Service Bus, Kafka or other event and messaging platforms, Docker, Kubernetes, Git, CI/CD, Azure DevOps, GitHub Actions, DevOps, test automation, agile methods and Scrum
• ▹Solid experience of C# and .NET
• ▹Used to modern frameworks, tools and development methods
• ▹Understands the importance of quality, security, performance and scalability
• ▹Can take responsibility for technical solutions from idea to production
• ▹Experience of using AI in development

Soft skills

What we offer

• ▹Freedom with responsibility and knowledge sharing
• ▹Regular social activities, events and shared adventures, plus an annual trip abroad together
• ▹Technically exciting environments with skilled colleagues and clients

About the company

Sigma is a technology consultancy that is expanding in Blekinge and works on technically complex client assignments with skilled colleagues and clients.