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Senior Fullstack Developer

location Bulgaria,Poland,Romania • working time Full-time • remote Remote

About the job

Matrix Eastern Europe, the offshore division of Matrix IT, one of the leading global R&D services companies with more than 11, 000 professionals, is looking for a Senior Fullstack Developer to join the team of our client and partner.

They are seeking a Senior Developer with deep expertise in AI, code, and scaling – and above all, the ability to lead bold technological processes and change the rules of the game.

Responsibilities

  • Leading the transition from monolithic to microservices architecture
  • Leading work with tools like GitHub Copilot and other LLMs as daily tools
  • Accelerating development processes, automating tests, documenting and understanding complex code
  • Defining new standards for high-volume development environments
  • Technical leadership of a team – including training, mentoring, and hands-on implementation
  • Implementing code solutions quickly and with high quality in critical systems environments
  • Developing cloud systems

Requirements

  • 7+ years of backend development experience in Node.js/C#/.NET
  • B.Sc. in Computer Science or a similar technological field – required
  • Proven experience in rapidly improving development speed and reducing bugs using AI-based tools
  • Ability to lead end-to-end development processes including scaling, documentation, and automation
  • System-level thinking, business orientation, and training skills Experience working with microservices architecture and building APIs

Relevant Technologies:

Backend: Node.js/C#/.NET Framework, ASP.NET Web API/Core, Entity Framework, Python
Databases: SQL Server, MongoDB, Redis
Messaging: RabbitMQ
Frontend: Angular 5+, TypeScript, React
Cloud & Containers: Azure / AWS, Kubernetes
AI Tools: GitHub Copilot, Claude – proven experience required

What we can offer

  • Additional 20 days of paid leave
  • Professional and career benefits
  • Top-quality work environment
  • Online courses
  • Online sports activities
  • Team Buildings and Christmas Parties
19 hours ago