.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.