Aviation

2-4

Senior

Software Engineering

Tech stack

.NET

C#

Blazor

JavaScript

Cloud platforms

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
  • Leverage AI/LLM-powered tools to enhance development work
  • Communicate with an international team
  • Collaborate with UX/UI designers to implement visually appealing and user-friendly interfaces

Requirements

  • 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)
  • Experience in using AI/LLM-powered tools in a professional context
  • Good command of English (B2+/C1)

Nice to have

  • Experience with C++ and Qt, SpecFlow
  • Experience with system modernization or legacy code refactoring
  • Experience with CI/CD process
  • Experience in agile development methodologies
Klaudia Jazowska

Recruitment owner

Klaudia Jazowska

Fullstack .NET Developer

Kraków | Białystok | Wrocław | Remote
18 300 - 21 800 PLN net (B2B)
15 500 - 18 500 PLN gross (UoP)
apply now

Benefits

Employee referral
Employee referral
Knowledge platforms
Knowledge platforms
Equipment
Equipment
Integration activities
Integration activities
Employee referral
Employee referral
Knowledge platforms
Knowledge platforms
Equipment
Equipment
Integration activities
Integration activities
Lunch & Learn
Lunch & Learn
In-house Tech Up
In-house Tech Up
Language lessons
Language lessons
Lunch & Learn
Lunch & Learn
In-house Tech Up
In-house Tech Up
Language lessons
Language lessons
Conferences & training
Conferences & training
Development plan
Development plan
Feedback sessions
Feedback sessions
Business travel opportunities
Business travel opportunities
Conferences & training
Conferences & training
Development plan
Development plan
Feedback sessions
Feedback sessions
Business travel opportunities
Business travel opportunities
Multisport My Benefit SOTM SOTY zG-Man

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Application

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HR & technical interview

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Meeting with the Manager

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Offer

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Feedback

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