Senior Backend Developer (C# or Node.js)

Antal Sp. z o.o.

Full-time Computer Occupations
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Location
Wrocław, Lower Silesian Voivodeship, Poland
Posted
June 07, 2026

Job Description

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...