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Senior Backend Developer (C# or Node.js)

Company: Antal Sp. z o.o.

Location: Wrocław, London

Posted: June 03, 2026

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Position Details

Senior Backend Engineer (C#/ Node.js) -  IoT Projects


We are looking for an experienced Backend Developer to join a team building modern IoT platform solutions and scalable backend services. The role focuses on developing API and middleware layers used by mobile, web, and internal systems within a distributed cloud-based environment.


Additional information



  • Work mode: Hybrid (Wrocław) or fully remote

  • Rate: 110 - 140 PLN/h


Responsibilities



  • Design and develop backend applications and middleware components for scalable IoT solutions.

  • Build and maintain REST APIs, WebSocket communication, and asynchronous integrations.

  • Create and optimize data models using relational and NoSQL databases.

  • Cooperate on cloud deployments, CI/CD processes, and infrastructure automation.

  • Ensure high software qual...