Senior Fullstack Developer
New
Q
Qodeca sp. z o.o.Fitness Technology
Warszawa, Grzybowska 87, Poznań, Długa, Wrocław, Kazimierza Wielkiego, Warszawa, Country code: PLFull-TimeSenior
Salary3916 - 4569 CHF per month b2b currencySource=conversion; 4180 - 4877 EUR per month b2b currencySource=conversion; 3574 - 4170 GBP per month b2b currencySource=conversion; 4818 - 5621 USD per month b2b currencySource=conversion; 18000 - 21000 PLN per month b2b currencySource=original
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Job Details
- Languages
- Polish (C1) and English (B2)
- Experience
- Minimum 5 years of commercial software development experience.
- Required Skills
- DockerMicrosoft AzureReact NativeTypeScriptC#ASP.NET Web API.NETReactMicroservices
Requirements
- Minimum 5 years of commercial software development experience.
- Strong proficiency in C#, .NET Core / .NET 8+, ASP.NET Web API, Entity Framework Core, and SQL Server.
- Hands-on experience with React, React Native, TypeScript, JavaScript, HTML5, and CSS3.
- Practical experience with microservices architecture and cloud-native solutions.
- Experience with Microsoft Azure services such as App Services, Service Bus, Azure SQL, and Azure DevOps.
- Solid knowledge of Docker and container workflows.
- Understanding of Clean Code, SOLID principles, and design patterns.
- Experience with unit and integration testing.
- Practical experience using AI programming assistants like Claude Code, GitHub Copilot, or ChatGPT.
- Strong sense of ownership, self-discipline, and ability to work in a remote team.
- Fluent proficiency in Polish (C1).
- Minimum B2 proficiency in English (speaking and writing).
Responsibilities
- Design, build, and maintain backend, web, and mobile solutions end-to-end.
- Develop backend services and REST APIs using C#, .NET 10+, ASP.NET Web API, and Entity Framework Core.
- Implement features across web, iOS, and Android using React, React Native, and TypeScript.
- Design cloud solutions using microservices architecture, Microsoft Azure, and Docker.
- Perform integrations with systems like ABC Fitness and Stripe.
- Apply Clean Code, SOLID principles, and design patterns while writing unit and integration tests.
- Participate in design discussions, code reviews, and technical decision-making.
- Utilize AI programming assistants to enhance development productivity.
- Collaborate on infrastructure configuration, documentation, and mobile app publishing.
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