.NET Developer - Tax GMS Developers

Our Tax Technology team deals with creating and implementing advanced IT solutions that support a wide range of business and tax calculation processes. They are related mainly to international personal income taxes (GMS – Global Mobility Services) and management of human resources. We work in a global and diverse environment and collaborate with various teams around the world across Europe, the Americas, and Asia. We are looking for candidates who would like to join our rapidly growing team of programmers in Kraków and Warszawa. In our daily work we are focused on creating safe, innovative and user-friendly solutions that combine specific business knowledge with new technologies. We support many worldwide corporations which appreciate the highest level of services we deliver.

We offer:

• Hybrid work model for flexibility and work-life balance (1 day per week in the office in Kraków or Warszawa)
• Continuous professional development – co-funding for postgraduate studies, language courses, and certifications
• Access to extensive learning platforms including Degreed, Pluralsight, and LinkedIn Learning, as well as Microsoft-certified training
• Access to up-to-date technology (.NET 10, Angular 21, Azure features like Cosmos DB, Service Bus, OpenAI)
• Buddy support program – a dedicated mentor to help you navigate your first months
• Employee referral program – earn a financial bonus for successful recommendations
• Mentoring program – plan your career path with expert guidance
• Cafeteria benefit system – choose from options such as MultiSport card, cinema/theatre tickets, vouchers, and discounts
• Private medical care, additional insurance, and a wellbeing program for you and your family
• Team-building and integration events
• Volunteering days – two additional paid days off and grants for social initiatives

Zakres obowiązków

• Design, develop, and implement modern business applications based on business and technical requirements
• Maintain existing solutions and develop new functionalities within current modules
• Participate in deployment processes and support end-users in resolving ongoing business-related issues
• Collaborate closely with Business Analysts (BA), Quality Assurance (QA), and UX experts
• Ensure project documentation is accurate and up to date

Wymagania

• At least 2 years of experience as a web application developer
• Strong knowledge of object-oriented programming (C#, .NET platform)
• Experience with at least one frontend technology such as Angular, React, TypeScript, or JavaScript, including familiarity with MVC/MVVM patterns
• Experience in building web applications (ASP.NET Core, Web API, SQL and NoSQL databases)
• Good command of English and Polish (spoken and written), enabling you to work with technical documentation and collaborate with international teams
• Experience with Azure DevOps or a similar platform
• Strong analytical thinking skills, taking ownership, and a solution-oriented “can-do” mindset
• Ability to work effectively both independently and as part of a distributed team

Nice to have:

• Experience with testing approaches (TDD, nUnit/xUnit, integration tests)
• Experience in cloud development, preferably with Microsoft Azure (App Service, Azure Functions, Cosmos DB, Service Bus, etc.)
• Understanding of CI/CD processes in Azure DevOps and experience working in Agile environments

Tech stack

• Object-oriented programming
• C#
• .NET
• Angular
• React
• TypeScript
• JavaScript
• MVC
• MVVM
• Web applications
• ASP.NET
• Web API
• SQL
• NoSQL
• Azure DevOps
• Testing
• TDD
• NUnit
• xUnit
• Integration test
• Cloud development
• Microsoft Azure
• Azure Functions
• Cosmos DB
• Service Bus
• CI/CD
• Agile