.NET Developer (f/m/x)

On-site6,000 – 8,000 PLN
Poland · Białystok, Poland

Tech Stack

DockerKubernetesJenkins.NETC#APISQL

Job Description, Responsibilities & Requirements

About the Position

Join Sii Polska as a .NET Developer (f/m/x) for a hybrid role in Łódź, focusing on back-end development with C# and MS SQL.

Responsibilities

  • Leading design and implementation work in IT systems based on Microsoft technologies
  • Collaboration with business users (gathering and analyzing requirements for new solutions) and other IT teams, including DevOps and QA
  • Active participation in Scrum team activities
  • Ensuring high code quality by creating automated, unit, and E2E tests
  • Creating and updating technical documentation

Requirements

  • Minimum 4 years of experience in developing and enhancing back-end modules in C# with MS SQL
  • Knowledge of .NET 4.8/6/8, Entity Framework, Web API
  • Practical experience with CI/CD tools such as Docker, Kubernetes, Jenkins
  • Experience writing unit, automated, and E2E tests
  • Good command of English
  • Willingness to work from the office at least once every two weeks

Salary

  • 6000-8000 PLN/hour

Benefits

  • Great Place to Work
  • Stable financial situation
  • Contracts with global brands
  • Internal training center
  • Many experts to learn from
  • Open and accessible management
  • Profit sharing
  • Passion Sponsorship Program
  • Regular team-building events and trips
  • Comfortable and well-equipped offices
  • MySii application
  • Medical care

About the Company

Sii Polska is a leading IT services provider in Poland, known for its stable financial situation and contracts with global brands. We are committed to creating a diverse and inclusive work environment and have been recognized as a Great Place to Work since 2015.

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Job Details

Company name:
Sii Ukraine
Salary:
6,000 – 8,000 PLN
Location:
Poland · Białystok, Poland
Employment Type:
Contract
Work Mode:
On-site
Posted on TheJob:
Jul 13, 2026
Last checked:
Jul 13, 2026
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