Mid/Senior .NET Developer - 1 year contract
BlackBelt Technology
| Company | BlackBelt Technology |
| Category | Engineering |
| Location | Budapest |
| Remote | On-site (inferred) |
| Employment | Not stated |
| Level | Senior |
| Salary | Not stated by the employer |
| Posted | — |
| Last verified | 30 Jul 2026 |
| Source | Employer career page (recruitee) |
Description
About Us 🚀 We are seeking a talented and experienced .NET Developer to join our team for 1 year in Budapest. You will play a crucial role in shaping the backend architecture of our partner’s next-generation environmental monitoring platform. This is an exciting opportunity to contribute to a significant project, work with cutting-edge technologies, and have a real impact on our partner’s product's future. The ideal candidate is a freelancer. Key Responsibilities 💻 Participate in the replacement and continuous modernization of legacy systems using a cutting-edge tech stack; Design, develop, and maintain scalable back-end solutions with .NET 8/9 and ASP.NET Core; Work with MS SQL and Entity Framework Core to implement efficient and optimized data access strategies; Occasionally use SqlKata, Dapper, or other ORM/micro-ORM technologies; Collaborate with the team in code reviews, knowledge sharing, and mentoring junior developers; Ensure code quality through unit and integration testing (test coverage is improving but still maturing); Utilize Docker-based environments locally and work in cloud-first architecture (Azure); Participate in CI/CD pipeline maintenance using GitLab (cloud-based), as part of the development team's responsibilities; Rarely, but potentially work with legacy UI technologies like Windows Forms or WPF; Keep up-to-date with the latest .NET ecosystem updates — the tech stack is refreshed yearly. What will you need 💪 4+ years of experience as a Back-End Developer working with .NET technologies (preferably medior-senior level); Deep knowledge of .NET 8/9, ASP.NET Core, and Entity Framework Core; Strong experience with relational databases, particularly MS SQL; Familiarity with SqlKata, Dapper, or other data access frameworks is a plus; Knowledge of containerization (Docker) and orchestration tools (Kubernetes) is highly advantageous, even if not used in production by developers; Experience with Azure cloud services is a plus; Comfortable with working in and contributing to CI/CD pipelines (GitLab); Hybrid work model requiring 2-3 days of on-site presence in our Budapest office; Excellent verbal and written communication skills in English ; Why should you join 🤸 🥷 BlackBelt team - You can join a cool and professional team, where everyone has a BlackBelt in technology; 🧠 Development - We are supporting your growth with trainings and certifications; 👣 Diversity - You can switch between projects and Delivery Units; 😮 WOW - We are supporting our colleague's health and well-being with WOW (Wellbeing Office Way) program; 🛋️ Flexibility - If you enjoy home office, then you can still enjoy your couch after Covid; 🧡 Support - We are a caring organisation, if you face difficulties you can always count on us.
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