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June 20, 2026

.NET Backend Developer

Senior • Remote

140 - 180 PLN/hr

Warsaw, Poland

Responsibilities

  • Design, develop, and maintain high-performance back-end services using .NET and C#.
  • Work extensively with Azure cloud services and CosmosDB to build scalable and resilient solutions.
  • Collaborate with front-end developers, product owners, and other team members to integrate back-end services.
  • Participate in code reviews, architectural discussions, sprint planning, and other Agile ceremonies.
  • Use modern development tools and practices to improve productivity, code quality, and maintainability.
  • Explore and apply AI-assisted tools where appropriate to support development, documentation, troubleshooting, and workflow efficiency.
  • Contribute to improving development processes, engineering practices, and team knowledge sharing.
  • Be a proactive problem-solver and continuous learner, staying current with relevant technologies and industry trends.

Requirements

  • 5+ years of professional experience in .NET development.
  • Proven experience with C#, Azure services, and CosmosDB.
  • Experience with TypeScript preferred, or JavaScript.
  • Interest in or hands-on experience using AI tools to support software development.
  • Bachelor’s degree in Computer Science or a related field.
  • Ability to align somewhat with US-based team working hours.
  • English language proficiency.

Stack

  • Cloud: Azure, CosmosDB
  • Back-End: .NET, C#
  • Scripting / Tooling: TypeScript preferred, JavaScript acceptable
  • Productivity / AI Tools: Familiarity with AI-assisted development tools is a plus

Nice to have

  • Background in Electrical Engineering or related technical field.
  • Interest in analog and mixed-signal hardware design.
  • Knowledge of hardware or system simulation concepts.
  • Familiarity with Drupal.
  • Familiarity with Playwright or Selenium.
  • Understanding of QA methodologies.

Offer

  • B2B contract with rate: 140–170 PLN/hour.
  • 100% remote work.
  • Support of a dedicated mentor and direct communication model.
  • Events and integration meetings, participation in various initiatives.
  • Access to benefits offering (medical care, Multisport card).