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Senior Fullstack / .NET Developer (M/F)

RecruiterASTEK Polskanofluffjobspublished 09/01/2026
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Must-have:TypeScriptC#ReactGitAzureDockerKubernetesFrontendFullstackDevOpsAISenior
Machine translation — original language: Polish.Show original

Currently, for our client, we are looking for a candidate (m/f) for the position of Senior Fullstack (.NET) Developer (M/F)

Additional information Remote work (meetings in the office once a quarter) ____________________ Ref. no.: AO234225

Daily tasks

  • Development and expansion of an in-house workflow framework using C# technology
  • Designing and developing microservices based on .NET 8
  • Creating and developing frontend components in React
  • Development and maintenance of REST APIs compliant with the OpenAPI standard
  • Collaboration with clients during implementations and validation of solutions
  • Creating technical documentation
  • Developing automated testing frameworks
  • Resolving problems occurring in production environments
  • Collaboration with the product team in defining and implementing new functionalities

Requirements

You will succeed in this role if: You have at least 8 years of commercial experience in software development You have expert knowledge of C# and .NET 8 You have experience in building and maintaining systems based on microservices architecture You have practical knowledge of ASP.NET Core, Entity Framework Core, and REST API You have experience with Kafka, MassTransit, or other asynchronous communication platforms You have experience with PostgreSQL, SQL Server, and MongoDB You have good knowledge of Docker, Kubernetes, and Helm You have experience with OpenTelemetry, Prometheus, and Grafana You have knowledge of React and TypeScript You have experience working with Azure DevOps or GitHub You have the ability to independently design solutions and make technical decisions You communicate fluently in English, both spoken and written Nice to have: Experience in creating frameworks or internal platforms Knowledge of workflow solutions and process systems Experience with AI tools supporting software development (e.g., Microsoft Copilot)

Must have: .NET, C#, REST API, PostgreSQL, SQL, MongoDB, Kafka, Docker, Kubernetes, Helm, Prometheus, Grafana, React, TypeScript, Azure DevOps, GitHub

Nice to have: AI