Senior Fullstack Engineer (.NET + React)

Spyrosoft is seeking an experienced Senior Full-Stack Software Engineer to join a dynamic team focused on developing and evolving business applications that support HR processes. You will play a key role in building robust solutions by working across the entire stack, utilizing .NET, React, and SQL to deliver high-quality software that addresses complex business needs.

Key responsibilities

• Develop and maintain full-stack applications using .NET and React.
• Build and enhance backend services, APIs, and web interfaces.
• Design and optimize SQL queries and database solutions.
• Take ownership of delivered solutions, from technical design through implementation and testing.
• Collaborate with Product Owners, designers, and other engineers to translate business requirements into effective technical solutions.

Requirements

• Minimum 5 years of commercial experience as a Software Engineer.
• Strong knowledge of C# and the .NET platform (.NET Framework, .NET Core).
• Strong experience with JavaScript, HTML, CSS, and React.
• Good knowledge of SQL and relational databases such as SQL Server or Azure SQL.
• Experience with Microsoft Azure or other cloud solutions.
• Strong analytical and problem-solving skills with a focus on clean, maintainable code.

What we offer

• Opportunity to work on impactful ERP and HR solutions for the Polish market.
• Collaborative environment with a focus on knowledge sharing and continuous improvement.
• Influence on technical decisions and product development processes.
• Fully remote work environment.