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Senior Software Engineer
  • Kraków
Senior Software Engineer
Kraków, Kraków, Lesser Poland Voivodeship, Polska
Kontakt.io
26. 5. 2025
Informacje o stanowisku

technologies-expected :


  • Java
  • Kotlin
  • Spring Framework
  • AWS
  • Kafka

about-project :


  • Kontakt.io is building the platform that care operations run on.
  • We reduce waste, cut costs, and improve revenue by improving throughput, asset utilization and staff productivity. Our platform uses AI, RTLS, and EHR data to enable self-learning agents to automate workflows, adapt in real-time, and orchestrate all of care delivery operations.
  • Easy to deploy and scale, it gives a clear picture of spaces, equipment, and people, eliminating inefficiencies and enhancing the patient experience. With measurable 10X ROI and over 20+ use cases, Kontakt.io is the go-to platform for better and faster care delivery operations.
  • Success in this position requires a passion for building high-performing and reliable applications. You need to have an internal urge to come up with innovative ideas and look for the best tools to solve scalability problems.
  • Our tech stack :
  • - backend: Kotlin, Java 15+ ; Spring boot, spring-data, Kafka, MongoDB, PostgreSQL, Docker, Kubernetes, Python
  • We are looking for a person who is able to work independently with the ability to look at the problem from a product perspective, suggest proper solutions and then execute against them.

responsibilities :


  • develop user-facing Kontakt.io Apps
  • define data models and work with database systems like MongoDB and Postgres
  • establish connectivity with third-party systems using modern integrations technologies like RESTful APIs, WSS Streams, Webhooks, Kafka streams
  • build modular and reusable components and libraries
  • contribute to key architectural decisions that directly impact the scalability of Kontakt.io Apps
  • write and maintain documentation
  • write performance tests
  • support and maintain CI/CD Workflows
  • create and drive best practices in the team (including peer reviews and building for testability)
  • propose any upgrades and updates necessary for keeping up with modern security and development best practices
  • participate in 24/7 on-call rotation

requirements-expected :


  • hands-on experience in designing and developing highly scalable applications using modern technology stacks such as Java/Kotlin
  • strong Kafka experience
  • strong microservice architecture experience
  • knowledge of Spring frameworks
  • the ability to naturally follow good development practices like test automation, CI/CD, source version control, etc
  • experience with development for and deployment to AWS
  • enjoy technical challenges and are eager to explore new technologies
  • good communication skills (English is a must)

offered :


  • 140 -180 PLN net/B2B/h or 20 000 - 23 000 PLN gross/Employment Contract
  • fast-paced and dynamic startup environment, flat structure
  • competitive salary and stock option plan
  • work with our IoT experts and trending technologies
  • remote or hybrid work (office in Krakow)
  • collaborative and self-organized environment
  • flexible working hours
  • private medical care, cafeteria system

benefits :


  • sharing the costs of sports activities
  • private medical care
  • life insurance
  • remote work opportunities
  • flexible working time
  • fruits
  • integration events
  • dental care
  • no dress code
  • coffee / tea
  • drinks
  • parking space for employees

  • Praca Kraków
  • Kraków - Oferty pracy w okolicznych lokalizacjach


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