Full Stack Developer .NET+ React

We’re looking for the special, unique and amazing YOU! @ KCS IT, we look for the ones that stands out, for those that always wants to be better and fight for it,  and for those who has the same values that we do: dedication, energy, integrity, transparency, flexibility, trust, honesty, hard work, proactivity, team work. At KCS we stand for equality and value diversity. We create a safe, diverse environment where opportunities are equal for everyone! We do not discriminate based on age, ethnicity, sexual orientation, gender, disability or any factor other than merit. All applications with skills for the position are welcome! We are looking for an Amazing: Full Stack Developer .NET+ React Seniority: Senior (5+ years) Type of position: Hybrid model in Oporto. Candidates need to be already living in Portugal! The amazing you, will have: Minimum of 4 years of experience as a Developer, with at least 2 years in a Full Stack role. Solid hands-on experience with .NET / .NET Core / ASP.NET Core and C# for backend development. Practical experience with React.js, including hooks, components, state management, and routing. Good knowledge of JavaScript / TypeScript, HTML, and CSS. Experience with both relational (e.g., SQL Server, PostgreSQL) and non-relational (e.g., MongoDB, Redis) databases. Strong background in building and consuming REST APIs. Proficiency with Git version control. Experience performing manual testing and understanding of automated testing approaches. Fluent English (spoken and written) – essential for technical communication. Experience with CI/CD tools (e.g., Azure DevOps, GitHub Actions). Familiarity with Docker and/or Kubernetes. Awareness of web application security best practices. Experience with automated testing tools: Jest, React Testing Library (frontend), xUnit/NUnit (backend). Experience working with microservices architecture. Why should you become part of our family? You can develop a career that fits you : your career development is personaliz