Senior Java Developer

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We are looking for a Senior Java Developer with AWS experience to help in developing awesome air quality information services. You will be part of a talented team of software engineers, data analysts and AI scientists who work on improving the way of spreading awareness of air pollution. You will be joining a dynamically working environment where creative solutions are encouraged.




  • Build and maintain web-based customer facing applications, APIs and IoT-facing solutions.
  • Contribute in all phases of the development lifecycle: requirements, technical design, implementation, testing, deployment, debugging and monitoring.
  • Write documented, well-designed code that makes a scalable, efficient and highly available application.
  • Communicate with team members and non-technical staff about requirements and implementation.




  • Strong understanding of Java/Kotlin and Spring Framework,
  • Good understanding of web applications building blocks (HTTP, REST API, JWT, CDN, etc.),
  • Knowledge of SQL (PostgreSQL, MySQL) and NoSQL databases (DynamoDB, ElasticSearch)
  • Good understanding and ability to design and implement distributed systems
  • Experience with various communication protocols (APIs, Queues, Streams)
  • Working experience with Linux / Unix commands to perform basic operations,
  • Adequate knowledge of code versioning tools (Git, GitHub),
  • Good understanding of written and spoken English.


To your advantage, if you are experienced with:


  • Timeseries specialized databases (InfluxDB, Timescale)
  • Docker and Kubernetes
  • AWS or other cloud providers,
  • Other programming languages (Golang, Python, JavaScript),


What do we offer?


  • Participation in prestigious projects that have a significant impact on improving people’s lives all over the World😊
  • Working with cutting-edge tools and technologies
  • Joining a team of passionate, driven and talented people
  • Opportunity to professional growth and personal development in a fast-paced environment
  • Ability to implement own ideas and solutions with great freedom of actions
  • Flexible employment conditions (type of contract, flexible working hours, time off in lieu, etc.)
  • A choice to work 100% remotely or, if you prefer, from our office in Kraków
  • Informal organizational culture and friendly atmosphere
  • Private Medicover medical care for employee
  • Competitive salary, adequate to skills and experience
  • 24 days of paid time off per year for B2B contract to support your work-life balance

Apply Anytime

Do you want to work with us, but you don't like any of the job offers listed? Send us your CV and convince us what you're good at. We are always looking for talented people to join our team.