Java/Kotlin Developer




10 000 - 15 000 PLN



Who are we & what we do

We are a technology & consulting company focused on Digital Sustainability solutions for the Energy & Utilities industry.

We started with fifteen people on board as a small software house nine years ago.
Now, in 2020, when we’re a team of over sixty talents and still growing, we’re extending it into technology that makes a difference and has a tangible impact on the world of everyday life.

  • Our goal is to actively take part in creating a positive future for both clients’ business and the environment.
  • Our focus concentrates on harnessing cutting-edge technology, talent, and innovation to create sustainability solutions for the Energy and Utilities industry in particular.

What we are seeking

We are seeking a Java/Kotlin passionate with excellent problem-solving skills and strong experience in commercial software development projects.

As our team member you will

  • develop dedicated software applications, mainly for the energy sector (green energy)

  • develop and integrate technological components

  • implement technical requirements

  • write a technical documentation

  • work with the project team with respect to SCRUM methodology


  • at least 3 years of experience in developing advanced web applications in commercial projects

  • good knowledge of Java 8+ and its internals

  • good knowledge of Kotlin

  • good knowledge of Spring & Hibernate

  • good knowledge of Object-Oriented Programming (OOP)

  • good knowledge of RDBMS and NoSQL databases (MySQL, PostgreSQL, MongoDB, etc.)

  • good knowledge of good practices and architectural patterns (SOLID, Go4, DDD, CQRS, Clean, etc.)

  • experience in Microservice architecture

  • excellence knowledge of unit and integration testing process ownership

  • good understanding and skills in creating modern API based on REST

  • good knowledge of Docker, Docker Compose

  • good knowledge of Git and Git OSS Workflow

  • good knowledge of Scrum

  • experience in estimating projects

  • very good English skills (C1)

Tech stack and tools:


  • Java (1.11)

  • Kotlin

  • Spark

  • Spring Boot (2.1)

  • Hibernate

  • Lombok

  • Spock

  • Message Queues

  • Docker


  • AWS

  • Google Cloud

  • Docker

  • Kubernetes

  • Sonar

  • GitLab CI

Development and knowledge base:

  • IntelliJ
  • JIRA
  • Confluence
  • Scrum

Code Repository

  • GitLab


People management: 0 - 10%
Design: 5 %
Development: 60 - 70%
Tests: 20%
Support and maintenance/bug fixing: 5%

What we offer:

  • full-time long-term cooperation → we need you not only to develop our projects but also our company
  • we offer B2B contract with a 30 days holiday bonus → everyone likes to have a paid vacation, we guarantee it
  • Remote work opportunities → it’s not a problem, we trust you do your best anyway
  • a non-corporate atmosphere conducive to development → we say ‘Hi!’, not ‘Good morning’ (even to our boss – he likes high-5s!) and we don’t have a dress code – comfy is fine for us
  • real influence on what exactly we build and how → we have a technology board, we value your ideas
  • work with cutting-edge technologies in international projects → we are passionate about what we do
  • flexible working hours → we’re open to your needs
  • private healthcare and sports card /cultural card → we focus on your well-being and health
  • playroom (football table, ping pong, darts), playstation, board games, relaxing space → we like to play and spend time together
  • bicycle parking with a room to rest and refresh yourself → we’re betting on your comfort
  • CodiblyTechTalks → we share our knowledge
  • office in the centre of Krakow (100 metres from Nowy Kleparz) → life goes on downtown, doesn’t it?

Apply for this position

Fill the application form and send us your CV

Recruitment process