.Net Developer

We are seeking an experienced .NET Developer to join one of our key clients in Stockholm. The ideal candidate is hands-on with the .NET stack, has strong backend development skills, and can build scalable, high-performance applications across the full software lifecycle. **Role Overview** As a .NET Developer, you will design, develop, and maintain backend services, APIs, and web applications. You will collaborate with product owners, architects, frontend developers, and QA teams to deliver high-quality solutions that meet business requirements. **Key Responsibilities** - Develop and maintain backend services and web applications using .NET Core / .NET 6+. - Design, implement, and consume REST/GraphQL APIs. - Collaborate with frontend developers to integrate UI with backend services. - Write clean, maintainable, and testable code following best practices. - Create unit and integration tests to ensure software quality. - Participate in code reviews, design discussions, and architectural decisions. - Optimize application performance, scalability, and reliability. - Work closely with DevOps teams to support CI/CD pipelines. - Troubleshoot production issues and perform root cause analysis. **Technical Requirements** **Must-have skills (5–7 years):** - Strong hands-on experience with C# and .NET Core / .NET 6+. - Experience building RESTful APIs and integrating with frontend frameworks. - Solid understanding of SQL Server, relational databases, and ORM frameworks like Entity Framework. - Familiarity with modern architecture patterns: Microservices, layered architecture. - Experience with unit testing frameworks (xUnit, NUnit, MSTest). - Strong understanding of OOP, design patterns, and clean code principles. - Familiarity with Git and CI/CD tools (Azure DevOps, GitHub Actions, GitLab CI). - Experience with containerization (Docker; Kubernetes is a plus). **Nice to Have:** - Knowledge of cloud platforms (Azure, AWS, GCP). - Experience with messaging systems (RabbitMQ, Kafka). - Exposure to frontend frameworks (React, Angular, Blazor). - Performance optimization, caching strategies, and scalability best practices. **Soft Skills** - Strong communication and collaboration skills. - Ownership mindset with ability to work independently. - Analytical thinking and attention to detail. - Comfortable in agile, fast-paced environments.