Sii Company Profile

Senior Java Developer


Job Description

Possible locations
  • Warsaw
  • Bialystok
  • Bydgoszcz
  • Czestochowa
  • Gdansk
  • Gliwice
  • Katowice
  • Cracow
  • Lublin
  • Lodz
  • Pila
  • Poznan
  • Rzeszow
  • Wroclaw
  • Remote work
Technologies & tools
  • Java EE
  • EJB
  • Microservices
  • Kafka
  • ElasticSearch
  • Cassandra
  • Docker
  • Kubernetes
  • OpenShift


As a Senior Java Developer, you will be working in an agile environment and be part of DevOps-centric culture. You will be working on a huge codebase where some parts are state-of-the-art and other no less important parts are still based on older technologies. This gives you the chance to learn new technologies and to benefit from all the experience you gained in the past to maintain and incrementally modernize the older parts of our platform.


Your role


  • Implementing new features for the international platform of the loyalty system
  • Implementing code and getting involved early in the overall process and delivering your software up to production
  • Refactoring and cleaning up existing code as well as writing new code


Your skills
  • At least 5 years of professional experience in Java programming
  • Knowledge of Java EE and EJB
  • Knowledge of Microservices, Kafka, Elasticsearch, Cassandra, Docker, Kubernetes and OpenShift
  • Extensive knowledge about Clean Code and caring about sustainability


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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