Possible locations
  • Bydgoszcz
  • Gdansk
  • Kielce
  • Cracow
  • Lublin
  • Pila
  • Poznan
  • Rzeszow
  • Szczecin
  • Torun
  • Wroclaw
  • Bialystok
  • Czestochowa
  • Gliwice
  • Katowice
  • Lodz
  • Warsaw
  • Remote work
Technologies & tools

Must have:

  • .NET
  • Git
  • SQL

Nice-to-have:

  • Azure
  • GCP
  • JavaScript

Since 2006, we have been working with prestigious brands worldwide, even with partner status for many clients. Currently, with over 7 500 experts, we have become Poland's top IT solutions provider!

Thanks to the feedback from our workers, we know we are the best Place to Work since 2015. We are driven by our 14 values, such as transparency, flexibility, curiosity, trust, and freedom. The status quo doesn’t satisfy us – we constantly strive to become better and reach further.

Our mission is to identify and promote our best workers. Each of them gets an individual offer that matches their career plan and preferences. Our workers choose the best options on the market and can retrain for various IT positions. And that’s all within Sii's structure!

As our .NET Developer, you will have the opportunity to take part in many projects. For example, we provided the development of software controlling the machine for analyzing DNA / RNA samples or for building a backend responsible for the product domain based on microservices for the e-commerce industry. We created microservices to help us create an intelligent solution and many more!

Your role

  • Writing code for a product team spending 80-90% time in hands on development
  • Taking care of the quality of the code 
  • Making a code review
  • Contributing to the current and future state of the product architecture
  • Creating and implementing the best functionality

Your skills
  • 3 years of experience in .NET programming
  • Good knowledge about SQL and SQL Server
  • Experience in web apps development and architectural design, optionally a desktop development, experience with microservices
  • Configuring new infrastructure and contributing to the whole design process of efficient infrastructure architecture
  • Suggesting and implementing ideas to improve automation infrastructure
  • Working closely with Tech Leads, Product, and Project Managers
  • Previous work in an Agile environment 

Job no. 221124-6OGLC

Why Sii

Great Place to Work since 2015

it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

Hundreds of fascinating projects

prestigious brands from around the world, long-term contracts and preferred partner status for many clients

Project suited to you

Do you want to change your career path? Is your project coming to an end? We’ll find you a new one! We have an app for this – Job Changer

We share the profit with Workers

Last year we allocated PLN 21 M to this benefit

PLN 500 000 per year for your ideas

with this amount, we support the passions and voluntary actions of our workers

7 500 experts and many development opportunities

Tech Communities, workshops, a training platform, and a technology blog – you choose

Employment stability

revenue of EUR 300 M, no debts, since 2006 on the market

Great, comfortable offices

perfect place to work, integrate, have fun together, and celebrate successes

Open-minded and available management team

quick decision-making, we’re all on a first-name basis

True values

these are not empty words – we’re guided by them every day

Fantastic atmosphere

created by all Sii Power People

Attractive benefits package

private healthcare, benefits cafeteria platform, car discounts and more

Show more Show less
Possible locations
  • Bydgoszcz
  • Gdansk
  • Kielce
  • Cracow
  • Lublin
  • Pila
  • Poznan
  • Rzeszow
  • Szczecin
  • Torun
  • Wroclaw
  • Bialystok
  • Czestochowa
  • Gliwice
  • Katowice
  • Lodz
  • Warsaw
  • Remote work
Technologies & tools

Must have:

  • .NET
  • Git
  • SQL

Nice-to-have:

  • Azure
  • GCP
  • JavaScript

Since 2006, we have been working with prestigious brands worldwide, even with partner status for many clients. Currently, with over 7 500 experts, we have become Poland's top IT solutions provider!

Thanks to the feedback from our workers, we know we are the best Place to Work since 2015. We are driven by our 14 values, such as transparency, flexibility, curiosity, trust, and freedom. The status quo doesn’t satisfy us – we constantly strive to become better and reach further.

Our mission is to identify and promote our best workers. Each of them gets an individual offer that matches their career plan and preferences. Our workers choose the best options on the market and can retrain for various IT positions. And that’s all within Sii's structure!

As our .NET Developer, you will have the opportunity to take part in many projects. For example, we provided the development of software controlling the machine for analyzing DNA / RNA samples or for building a backend responsible for the product domain based on microservices for the e-commerce industry. We created microservices to help us create an intelligent solution and many more!

Your role

  • Writing code for a product team spending 80-90% time in hands on development
  • Taking care of the quality of the code 
  • Making a code review
  • Contributing to the current and future state of the product architecture
  • Creating and implementing the best functionality

Your skills
  • 3 years of experience in .NET programming
  • Good knowledge about SQL and SQL Server
  • Experience in web apps development and architectural design, optionally a desktop development, experience with microservices
  • Configuring new infrastructure and contributing to the whole design process of efficient infrastructure architecture
  • Suggesting and implementing ideas to improve automation infrastructure
  • Working closely with Tech Leads, Product, and Project Managers
  • Previous work in an Agile environment 

Job no. 221124-6OGLC

Why Sii

Great Place to Work since 2015

it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

Hundreds of fascinating projects

prestigious brands from around the world, long-term contracts and preferred partner status for many clients

Project suited to you

Do you want to change your career path? Is your project coming to an end? We’ll find you a new one! We have an app for this – Job Changer

We share the profit with Workers

Last year we allocated PLN 21 M to this benefit

PLN 500 000 per year for your ideas

with this amount, we support the passions and voluntary actions of our workers

7 500 experts and many development opportunities

Tech Communities, workshops, a training platform, and a technology blog – you choose

Employment stability

revenue of EUR 300 M, no debts, since 2006 on the market

Great, comfortable offices

perfect place to work, integrate, have fun together, and celebrate successes

Open-minded and available management team

quick decision-making, we’re all on a first-name basis

True values

these are not empty words – we’re guided by them every day

Fantastic atmosphere

created by all Sii Power People

Attractive benefits package

private healthcare, benefits cafeteria platform, car discounts and more

Show more Show less

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