.NET Architect


We are an international company specializing in the development and implementation of software products. Our services are open to companies mainly from Europe (including Poland), and the United States. We are a group of enthusiasts - engineers whose passion is to create useful IT solutions.

Job Details
We are SIENN Living Online Technology! Let’s grow together!
Do you want to become a part of something new? We are looking for software enthusiasts, who are open to new challenges and new technologies. If you want to work in international team and have fun – join us!



About project:

Our BizzLayer concept is a powerful, flexible and modular framework that provides solutions in areas such as data management, product information management, task and service management and dashboarding.

BizzLayer aims to optimize complete organizations across the entire chain for maximum results.

About the position:

As a Lead Developer / Software Architect, you will be in charge of developing our BizzLayer framework, it’s modules and plugins, and making sure that the right technical decisions are made in our client projects. You will bring the current framework to the next level and act as Product Owner for new core functionality and modules. You will work closely with the stakeholders and you will always be aware of budgets and deadlines. 

We are looking for a person who:

  • Has minimum 5 years of experience in developing products and/or frameworks;
  • Enjoys working with people;
  • Has good time management skills;
  • Speaks English fluently (B2+);
  • Is creative with a ‘can do’ attitude.

You are an ideal candidate if you have knowledge of:

  • C#;
  • .NET Core 2.x /ASP.NET / .NET 4.x;
  • MSSQL 2016+/ TSQL;
  • OOP / MVVM.

You score even more if you know:

  • HTML;
  • CSS;
  • Javascript.

 Extra points for:

  • Being familiar with Atlassian Jira;
  • Angular (4/5/6) experience;
  • App development experience;
  • Jira and GIT experience;
  • DevOps experience;
  • Continuous Integration experience.

We offer:

  • An exciting position where you can have fun creating value;
  • Excellent opportunities for further personal and professional growth;
  • Being a part of our highly capable and motivated team with a great team spirit;
  • Ability to work in agile methodologies (Agile / SCRUM);
  • Attractive conditions of employment (contract or B2B);
  • International training and certification (Microsoft MCP);
  • Medical package and Multisport card.


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Need Help ?

Any questions? Please do not hesitate to contact me

Katarzyna Skowronek

HR Specialist

+48 889 783 562