Senior/Principal .NET Developer

Posted on Mar 22, 2023

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Job Details

Full Time
🇵🇱 Poland

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About Xebia

We are Xebia - a place where experts grow. For nearly two decades now, we've been developing digital solutions for clients from many industries and places across the globe. Among the brands we’ve worked with are UPS, McLaren, Aviva, Deloitte, and many, many more.

We're passionate about Cloud-based solutions. So much so, that we have a partnership with three of the largest Cloud providers in the business – Amazon Web Services (AWS), Microsoft Azure & Google Cloud Platform (GCP). We even became the first AWS Premier Consulting Partner in Poland.

Formerly we were known as PGS Software. In 2021, we joined Xebia Group – a family of interlinked companies driven by the desire to make a difference in the world of technology.

Xebia stands for innovation, talented team members, and technological excellence. Xebia means worldwide recognition, and thought leadership. This regularly provides us with the opportunity to work on global, innovative projects.

Our mission can be captured in one word: Authority. We want to be recognized as the authority in our field of expertise.

What makes us stand out? It's the little details, like our attitude, dedication to knowledge, and the belief in people's potential - emphasizing every team members development. Obviously, these things are not easy to present on paper – so make sure to visit us to see it with your own eyes!

Now, we've talked a lot about ourselves – but we'd love to hear more about you.

Send us your resume to start the conversation and join the #Xebia.

The Position

You will be:

  • part of Xebia Poland community of over 200 C#/.NET developers working closely together in the .NET Guild,
  • supported by technical mentor and and Team Leader,
  • participating in the development of architecture, system components, microservices, and DevOps solutions,
  • working in a culture of Continuous Integration and Continuous Delivery,
  • cooperating with clients from various industries,
  • working in an agile environment with tools such as GIT, Azure DevOps, Jira, Confluence, Miro,
  •  implementing business requirements provided by the client,
  •  working in cloud and on-premises environments.


  • 5+ years of experience in web application development,
  • practiced the OOP paradigm, knows and applies SOLID principles,
  • very good knowledge of .NET Framework 4 (or later),
  • experienced with ASP.NET MVC or ASP.NET Web API,
  • experienced with .NET Core or .NET 5/6,
  • able to use relational (MS SQL Server, MySQL, Oracle, among others) and non-relational (MongoDB, DynamoDB, CosmosDB, among others) databases,
  • familiar with Redis and Elasticsearch,
  • knows what REST is and how to create APIs according to best practices,
  • knows how modern IT systems are built,
  • cares about code quality,
  • writes unit and integration tests and is aware of their importance,
  • able to independently create readable, testable code in accordance with standards,
  • familiar with web application security issues,
  • comfortable to discuss architectural decisions and proposed design solutions,
  • experienced communicating with business representatives,
  • understands customer requirements and able to deliver relevant business value,
  • able to communicate in English (B2) and Polish (B1/B2).

Our Hiring Process

  1. CV review
  2. HR call
  3. Interview
  4. Decision


PLN 16,000 - PLN 29,000 per month

Senior/Principal .NET Developerat Xebia