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September 19, 2026

Senior .NET Full-Stack Developer (JavaScript, jQuery)

Senior • Remote

12,000 - 23,000 PLN/yr

Katowice, SL, Poland

Quick Facts

Senior .NET Full-Stack Developer (JavaScript, jQuery)

Description

Join a cross-functional application development team to design, code, test, and debug web applications. Build new features on top of an existing product, integrate third-party components into the application framework, and support quality through testing and code reviews. Participate in backlog refinement and help improve existing infrastructure, including on-call pager duty rotations.

Responsibilities

  • Design, code, test, and debug web applications
  • Develop new features on top of the existing product
  • Build new system components and integrate third-party products
  • Follow development best practices and participate in code reviews
  • Maintain quality throughout the development lifecycle
  • Perform development testing to confirm work meets requirements and quality standards
  • Review requirements during product backlog refinement/grooming meetings
  • Support and improve existing infrastructure
  • Participate in pager duty rotations

Requirements

  • 3+ years of experience in .NET/C#
  • Proficiency in JavaScript and hands-on expertise in jQuery
  • Significant experience with the ASP.NET MVC pattern
  • Familiarity with Bootstrap
  • Solid working knowledge of relational databases and SQL
  • Proactive mindset with strong ownership and responsibility for results
  • Commitment to code quality, accurate estimation, and timely communication of status and blockers
  • Stress tolerance and strong customer focus
  • Excellent communication skills and ability to work in a large, globally distributed team
  • English proficiency at Upper-Intermediate level (B2) or higher

Benefits

  • Top tech minds and an agile, startup-like culture
  • Hybrid-by-design with opportunity to work remotely within Poland
  • Chance to work abroad for up to 60 days annually and business-driven relocation opportunities
  • Career development programs, mentoring, thought leadership, soft skills and well-being programs
  • Certification options (Anthropic, Gemini, GCP, Azure, AWS)
  • English classes
  • Stable pay
  • Employee Stock Purchase Plan with a 15% discount
  • Health insurance, Multisport, shopping vouchers
  • Referral bonuses up to $2,000
  • Offices with entertainment and relaxation zones, table tennis/football, free snacks and coffee
  • Corporate, social and well-being events

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