NET Developer

5 days ago

Budapest, Budapest, Hungary BlackBelt Technology Kft. Full time 900,000 - 1,200,000 per year

About Us

We are seeking a talented and experienced
.NET Develope
r to join our growing team 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.

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 MSSQL;
  • 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 (Git
    Lab);
  • Hybrid work model requiring 2-3 days of on-site presence in our Budapest office
    ;
  • Excellent verbal and written communication skill
    s
    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 DeliveryUnits;

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 counton us.

  • NET Developer

    5 days ago

    Budapest, Budapest, Hungary E-Group Full time 60,000 - 120,000 per year

    E-Group is an innovative deep-tech, high-tech mid-market company with a strong vision, a fast-growing and friendly atmosphere, and a dynamic team of experts working on next-generation, beyond-state-of-the-art, future-proof technologies in artificial intelligence core technology stack, payment transactions, and digital identification.Since its foundation in...

  • Medior vagy Senior .NET Developer

    3 days ago

    Budapest, Budapest, Hungary Dolphio Technologies Full time 2,500,000 - 5,000,000 per year

    Az új munkatársunkat a számos technológiával, programnyelvvel foglalkozó szoftverfejlesztési projektjeink kivitelezésével szeretnénk megbízni, amihez tapasztalattal rendelkező Medior/Senior .NET Developer jelentkezését várjuk webalkalmazás fejlesztéshez.Leendő munkatársunk feladatai:.NET alapú webalkalmazás fejlesztés (Frontend:...

  • Intermediate .NET Developer

    5 days ago

    Budapest, Budapest, Hungary Tata Consultancy Services Full time 4,400,000 - 7,200,000 per year

    Your skills and qualifications:3-5 years of experience with .NET 6+ / C# for API development.Familiarity with Clean Architecture principles and Mediator pattern (MediatR or equivalent).Experience with Azure App Services and Azure Functions .Strong skills in REST API development (OpenAPI/Swagger, validation, error handling, versioning).Proficiency...

  • NET / C# Engineer

    1 day ago

    Budapest, Budapest, Hungary TRIJYA Portfolios Full time 60,000 - 120,000 per year

    ResponsibilitiesBuild enterprise-grade applications using .NET Core / .NET 6/7Develop REST APIs, microservices, middleware componentsWork on Azure-based environmentsPerform code optimization, debugging, troubleshootingMaintain CI/CD pipelines and automated deploymentsRequired Skills.NET Core, C#, ASP.NET MVC, Web APIEntity Framework Core, Dapper, LINQAzure:...

  • NET Tech Lead

    3 days ago

    Budapest, Budapest, Hungary Sonrisa Full time 120,000 - 180,000 per year

    You'll be working on international, diversified, greenfield projects, ranked from small to mid-size, typically lasting around 1–2 years. As a Tech Lead, you'll guide agile teams, shape technical direction, and drive software excellence.IT'S ALL ABOUT…Leading agile development teamsDesigning and delivering robust, scalable architectureCoaching team...

  • NET Tech Lead

    3 days ago

    Budapest, Budapest, Hungary Sonrisa Technologies Full time €60,000 - €120,000 per year

    *You'll be working on international, diversified, greenfield projects, ranked from small to mid-size, typically lasting around 1–2 years. As a Tech Lead, you'll guide agile teams, shape technical direction, and drive software excellence.It's All About…*Leading agile development teamsDesigning and delivering robust, scalable architectureCoaching team...

  • Senior C#/.NET Consultant, Budapest

    5 days ago

    Budapest, Budapest, Hungary Lab49 Full time 60,000 - 100,000 per year

    LAB49 is currently seeking an experienced C#/.NET Developer with a primary focus on back-end development. This is a unique opportunity to elevate your career with an unparalleled experience in one of the world's most dynamic business hubs.As a Senior C#/.NET Developer at LAB49, you will be at the forefront of driving transformative change for our esteemed...

  • Senior C#/.NET Consultant, Budapest

    5 days ago

    Budapest, Budapest, Hungary ION Group Full time €50,000 - €65,000 per year

    The Role  LAB49 is currently seeking an experienced C#/.NET Developer with a primary focus on back-end development. This is a unique opportunity to elevate your career with an unparalleled experience in one of the world's most dynamic business hubs.    As a Senior C#/.NET Developer at LAB49, you will be at the forefront of driving transformative change...

  • NET Software Engineer

    5 days ago

    Budapest, Budapest, Hungary Siemens Full time 6,000,000 - 8,000,000 per year

    Job ID483546Posted since03-Nov-2025OrganizationMobilityField of workResearch & DevelopmentCompanySiemens Mobility Kft.Experience levelExperienced ProfessionalJob typeFull-timeWork modeOffice/Site onlyEmployment typePermanentLocation(s)Budapest - Budapest - HungaryA Siemens Mobility Kft. K+F központjában, a XI. kerületi Infoparkban olyan projekteken...

  • Principal C#/.NET Consultant, Budapest

    5 days ago

    Budapest, Budapest, Hungary ION Group Full time 900,000 - 1,200,000 per year

    Lab49 has an opportunity available for a Lead .NET Engineer to lead work on complex and challenging projects to drive transformative change for our top- tier Financial Services clients. Operating in an Agile environment, applications are built with modern C# and front-end Web technologies and frameworks.     RESPONSIBILITIES:Build testable, robust C#/.NET...