Sii Company Profile

.NET Developer


Job Description

Possible locations
  • Gdansk
  • Bialystok
  • Bydgoszcz
  • Poznan
  • Lodz
  • Lublin
  • Rzeszow
  • Wroclaw
  • Warsaw
  • Katowice
  • Cracow
  • Remote work
Technologies & tools

Must have:

  • Visual Studio 2019
  • Rider
  • Confluence
  • ReSharper
  • NCrunch
  • Azure DevOps
  • Terraform
  • Puppet
  • Octopus


  • ASP .NET Core
  • Angular 2+


Do you want to impact nearly 600 million users around the world? Take on various technological challenges? Create software to handle all types of payments – from terminals, through online transactions and mobile applications, to the analysis of collected data? Join the team implementing projects for Ingenico-Worldline, of which we are the only technology partner in Poland.


Your role


  • Collaboration with all stakeholders from product definition to running in production in a DevOps collaborative mindset
  • Being part of a Scrum team and participating actively in all its rituals
  • Taking active part in peer-working sessions
  • Creating innovative & high quality technical solutions and architecture that will be delivered through Scrum iterations


Your skills
  • At least 5 years of working experience in .NET projects
  • Thorough knowledge of tooling suite & environment: Visual Studio 2019 or Rider, Git, Confluence, Jira, ReSharper, NCrunch
  • Good understanding of CI/CD and experience with: Azure DevOps, BitBucket, Bamboo, Terraform, Puppet, Octopus
  • Experience with microservices architecture
  • Experience on Fullstack positions using: ASP.NET MVC/ASP.NET Core MVC
  • Good understanding of clean code principles
  • Experience with ASP .NET Core, SOA, ReactJS or Angular 2+ is nice to have
  • Excellent English skills (both written and spoken)


Why Sii

Great Place to Work since 2015

it’s thanks to our workers' opinions that we get the title and implement new ideas

Dozens of fascinating projects

for prestigious brands from all over the world, based on a variety of technologies

Employment stability

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

Financial stability

revenue of 225 EUR M, no debts, preferred supplier status for many clients

PLN 500 000 per year for your ideas

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

6 000+ experts

to learn from and share your experience with

Investment in your growth

meetups, webinars, training platform and technology blog – you choose

Comfortable workplace

class A offices or remote work

Friendly management

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, MyBenefit platform, car discounts and more

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