Senior Software Engineer

Infolet has been supporting IT leaders for 20 years by providing technology, experts, and full operational support, including legalization of stay and work for international IT specialists. They work on projects involving Java, JavaScript, C embedded, C++, PHP, mobile specialists, software testers, network and system administrators, among others.

• 10+ years of experience in software engineering
• Strong expertise in C# and the .NET ecosystem (.NET 6 or newer)
• Solid experience with Microsoft SQL Server
• Experience building applications with ASP.NET MVC and Web API
• Frontend development experience using HTML, CSS, JavaScript, and modern frameworks such as React or Angular
• Strong understanding of object-oriented programming and software design patterns
• Experience developing reusable C# libraries and scalable application architectures
• Experience with Git, CI practices, and automated testing frameworks
• Fluent in English and Polish

Nice to have:

• Experience working in enterprise-scale environments
• Knowledge of modern DevOps and CI/CD practices
• Experience with cloud-based application development
• Familiarity with Agile software delivery methodologies

• Design, develop, and maintain scalable .NET applications
• Translate business requirements and use cases into technical solutions
• Build clean, reusable, and maintainable code following engineering best practices
• Develop and enhance web applications across backend and frontend layers
• Optimize application performance, quality, and responsiveness
• Identify and resolve performance issues, defects, and technical bottlenecks
• Support the continuous development and production deployment of .NET solutions
• Collaborate with cross-functional teams in an Agile environment