Senior Backend Developer (C# or Node.js)

Antal Sp. z o.o.
📍 Wrocław, Lower Silesian Voivodeship, Poland 💼 Full-time 🕒 Posted June 21, 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...

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Job Details

  • Location Wrocław, Lower Silesian Voivodeship
  • Job Type Full-time
  • Category Computer Occupations
  • Posted Date June 21, 2026
  • Application Deadline July 31, 2026