Software Fullstack Engineer

For one of our clients - a US-based cyber security software development company, we are looking for an experienced Software Fullstack Engineer (.NET, C# AND React). The person in this position will join the team of engineers in the R&D department.

We are also recruiting for Senior and Staff positions in the same team.

The company is expanding its global presence and operations to the Polish market with the opening of its first European Centre in Krakow.

This is a hybrid position, requiring 3 days a week in our Kraków office.

• Contribute to full-stack development, delivering features across backend services and frontend applications
• Implement backend services and APIs using C# and .NET, with PostgreSQL/EF Core for persistence
• Build modern, responsive user interfaces using React and TypeScript
• Support and enhance the existing on-premises product while contributing to SaaS modernization initiatives
• Write clean, maintainable, and well-documented code following engineering and security best practices
• Participate in code reviews, testing, and debugging for both frontend and backend components
• Collaborate with senior engineers, product managers, and designers to deliver high-quality features
• Help maintain CI/CD pipelines and ensure smooth deployments
• Monitor application performance and assist in troubleshooting issues

• Bachelor's degree in Computer Science, Engineering, or related field, or equivalent experience
• 3-5+ years of professional software development experience
• Proficiency in C# and .NET/.NET Core
• Hands-on experience with React and TypeScript for modern web development
• Experience with relational databases (PostgreSQL preferred) and ORM frameworks (e.g., Entity Framework Core)
• Solid understanding of object-oriented programming, design principles, and software development best practices
• Experience working with RESTful APIs
• Familiarity with Git, CI/CD pipelines, and containerization basics (Docker)
• Strong problem-solving skills and eagerness to learn