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Fullstack .NET Developer
  • Kraków
Fullstack .NET Developer
Kraków, Kraków, Lesser Poland Voivodeship, Polska
Grape Up Sp. z o.o.
15. 3. 2025
Informacje o stanowisku

technologies-expected :


  • C#
  • ASP.NET
  • .NET
  • ASP.NET Core Blazor
  • Microsoft Azure
  • AWS
  • HTML
  • CSS
  • JavaScript

technologies-optional :


  • C++
  • Qt
  • SpecFlow

about-project :


  • At Grape Up our mission is leveraging technology to drive software innovation.
  • Together with our client, the world’s leading specialist in air transport communications, we are building enterprise cloud solutions.
  • We’re seeking an experienced Fullstack Developer with strong .NET and C# skills to join our development team in a new digital transformation initiative. You’ll be at the forefront of modernizing our client’s technology landscape, architecting elegant solutions that transform legacy systems into cutting-edge applications.

responsibilities :


  • Design and develop robust, scalable .NET web applications in C# using Blazor
  • Create responsive user interfaces using modern front-end technologies (HTML5, CSS3, JavaScript frameworks)
  • Implement RESTful APIs and integrate with various data sources
  • Write clean, maintainable, and well-documented code
  • Write unit and integration tests
  • Code reviews
  • Troubleshoot, debug, and optimize application performance
  • Communicate with an international team
  • Collaborate with UX/UI designers to implement visually appealing and user-friendly interfaces

requirements-expected :


  • 5+ years of professional experience in fullstack development with C#
  • Strong proficiency in ASP.NET + preferably experience with ASP.NET Core Blazor
  • Experience working with RESTful APIs/SignalR and integrating with cloud services (Azure, AWS)
  • Knack for reverse-engineering and understanding complex system
  • Strong problem-solving skills and attention to detail
  • Excellent communication skills to articulate technical concepts clearly
  • Experience with front-end technologies (HTML5, CSS3, JavaScript)
  • Good command of English (B2+/C1)

offered :


  • Non-corporate work environment
  • Access to knowledge platforms (e.g. Pluralsight)
  • Equipment of your choice
  • In-house business & tech trainings, and meetups
  • Financing of conferences, external trainings, and certifications
  • Language lessons (English, German, and Polish)
  • Cafeteria MyBenefit where you can choose your favourite perks (e.g. LuxMed private medical care, MultiSport, shopping, and event vouchers, etc.)
  • Weekly Lunch & Learn where we meet up in the office, lunch together, and share our knowledge
  • Employee referral program
  • Rewards for the Success of the Month and Year awarded by our employees
  • G-Man work anniversary awards
  • Integration activities & trips

benefits :


  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of foreign language classes
  • sharing the costs of professional training & courses
  • remote work opportunities
  • flexible working time
  • integration events
  • corporate sports team
  • no dress code
  • video games at work
  • coffee / tea
  • drinks
  • parking space for employees
  • leisure zone
  • extra social benefits
  • baby layette
  • employee referral program
  • charity initiatives

  • Praca Kraków
  • Kraków - Oferty pracy w okolicznych lokalizacjach


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