Sii Sp. z o.o.

Sii Sp. z o.o.

.NET Developer

Offer parameters
home office work • hybrid work
mid • senior
valid for 25 days
(until 15 Apr)
Набір відкритий для українців
Recruitment open to Ukrainians
Gdańsk, Pomeranian (Poland)
Aleja Grunwaldzka 472e

Technologies we use


.NET Core
.NET Framework
MS SQL Server


Azure Cloud

About the project

As our worker, you will join the community of over 400 experienced .NET Developers at Sii.
Our specialists have contributed to developing one of the most popular FinTech Payment Platforms, helped the Investment Banking community develop new systems and applications from scratch, and created lab equipment controlling software for advanced DNA/RNA analytics.
We are a Microsoft Solutions Partner and a member of Microsoft Cloud Elite. This would give you access to unique projects and many perks, such as free training and exam vouchers.
Our candidates receive a personalized offer that matches their career plan and preferences, with many different projects to choose from.

Your responsibilities

  • Developing applications based on .NET
  • Collaborating with the team and stakeholders from product definition to launch
  • Actively participating in Scrum team activities
  • Using good practices such as code review, unit testing, design patterns, and DevOps culture
  • Contributing to the product architecture in its current and future shape

Our requirements

  • At least 3 years of experience as a .NET Developer
  • Solid knowledge of C# and .NET (Framework or Core)
  • Hands-on experience with CI/CD tools
  • Experience with writing unit tests
  • Familiarity with architectures (microservices or serverless would be an asset)
  • Good written and spoken technical English, allowing trouble-free communication


  • Knowledge of front-end technologies, such as Angular or React
Company Image

What we offer

  • First place in Great Place to Work ranking in 2021 – we receive the title and implement new ideas thanks to our employees opinions
  • Employment stability – revenue of 1 MLD PLN, no debts, preferred supplier status for many clients
  • We share the profit with Workers - last year we allocated PLN 21 M to this benefit
  • Attractive benefits package – private healthcare, cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 500 000 per year for your ideas – with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

Recruitment stages

  • 1.
    Send your CV
  • 2.
    Talk to us about your expectations
  • 3.
    Learn more about our projects and choose the best
  • 4.
    Start your adventure with Sii!

Sii Sp. z o.o.

Sii is a continuously developing provider of technology consulting, digital transformation, BPO and engineering services in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.
The Great Place to Work title, won 8 times in a row, proves that at Sii we create a friendly work environment. In a survey, as many as 90% of our employees responded that Sii is a great place to work, and 95% of them think we have a great atmosphere here.

This is how we work

I apply to:
Sii Sp. z o.o.
Sii Sp. z o.o.
Gdańsk, Aleja Grunwaldzka 472e, Pomeranian (Poland)
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Need more information?

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