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Senior/Principal .NET Developer

Bulgaria, Sofia · Job Posted February 16, 2026
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Job Description

We are looking for a Senior/Principal C#/.NET Developer. The ideal candidate should be strong in .NET 9 / ASP.NET Core, comfortable with CQRS/MediatR, experienced with the Azure ecosystem (Service Bus, B2C, Functions), and familiar with Docker / Kubernetes deployments. Testing discipline (xUnit, BDD) and resilience patterns (Polly) round out the profile.

Job Responsibility

  • Design, develop and unit test solutions of any size or complexity
  • Produce and champion quality, clean code and promote software engineering excellence within the team and company
  • Diagnose defects, and provide effective solutions
  • Provide development estimates, be a part of planning sessions
  • Understand and support the release management process
  • Frequent interaction with the architecture team to produce secure, robust, reliable and efficient solutions to meet the highest industry standards
  • Coach team members

Requirements

  • 7+ years of experience with .Net Framework or C#
  • 7+ years of experience with SQL and MSSQL server
  • Experience with .Net Core
  • Experience with unit testing
  • Proficiency with GIT
  • Experience with Jenkins, Git, Azure DevOps
  • Team work
  • Excellent communication skills
  • Problem solving skills

Nice to have

  • Octopus experience would be a benefit
  • FinTech domain experience would be a significant plus

What we offer

  • 25+ days off, as well as birthday day off and 4 charity days off per year
  • Flexible start and end of the working day and hybrid working mode, including a combination remote and in the office
  • Team-centric atmosphere
  • Encouraging healthy lifestyle and work-life balance including supplemental health insurance
  • New parents bonus scheme

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