April 10, 2026

Senior C# Engineer

Senior • Remote

19,500 - 24,000 PLN

Krakow, Poland

About the role

You will need to be proficient in C# backend development with a thorough understanding of the .NET technologies involved. Strong backend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. 

Technologies we work with:

C#, .NET Core, .NET Framework, TypeScript, JavaScript, Python, Node.js, REST/GraphQL APIs, React, AWS, Terraform

Responsibilities

  • Designing, writing, testing functionalities for a backend system written in C#

  • Design software architecture between backend, frontend and mobile apps

  • Deploying and maintaining microservices in AWS using Terraform 

  • Debugging and maintaining system on production used by consumers from several European countries

  • Scoping and assessing the complexity of features

  • Participating in sprint planning, daily sprints and meetings with product owners for grooming new features

  • Collaborating with other team members and teams who depend on functionalities that you develop

  • Recruiting and mentoring new team members

Required qualifications

  • 5+ years of production software development experience in C# engineer role

  • Solid hands-on experience in .NET Core and .NET Framework technologies

  • Experience in working with AWS and Terraform / CloudFormation

  • Strong knowledge of DBMS like MS SQL / PostgreSQL / DynamoDB

  • Expertise of REST APIs

  • Strong hands-on experience of CI&CD processes

  • Proficiency in OO design patterns, SOLID principles, Clean Code and solving architectural problems

  • Computer Science degree

  • AI Tooling usage

  • Able to work with Agile methodologies such as SCRUM and/or Kanban

  • Good communication and collaboration skills

  • Self-motivation, proactive attitude

  • Proficiency in English

Nice to have

  • Experience in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

  • Exposure to frontend development in React

  • Working experience with one of the object-oriented and/or functional languages such as Java, TypeScript, Elixir, C++, Golang, Erlang, Python, Kotlin