Fullstack Developer (.NET / React)

About the role We are looking for an experienced Senior Fullstack .NET Engineer with a strong backend focus. Knowledge of React is a plus, but not essential — solid expertise in .NET and application architecture is key. You’ll join a team that values quality, ownership, and proactive problem-solving, with real impact on the product. Responsibilities • Design and develop applications using .NET Core • Build and maintain REST APIs (architecture, design, documentation e.g. Swagger) • Contribute to end-to-end application architecture (frontend + backend) • Work with databases and ORM tools (Entity Framework Core) • Ensure code quality and implement testing strategies (unit, integration, e2e) • Identify areas for improvement and propose solutions • Collaborate closely with team members and stakeholders Requirements • At least 5 years of experience in a similar role • Strong expertise in .NET Core • Experience in designing and implementing REST APIs • Knowledge of design patterns and software engineering best practices • Experience with software testing at different levels • Strong understanding of web application architecture (frontend-backend interaction) • Experience with databases: SQL Server, SQLite • Hands-on experience with Entity Framework Core • Experience with .NET Framework 4.8 (enterprise applications) • Strong communication skills and ability to explain technical concepts clearly Nice to have • Basic knowledge of React • Experience working with AI agents Recruitment process • Technical interview (1.5–2h, technical tasks, no live coding) • Soft skills interview (up to 1h)