At Amartus, we combine premium software development skills with domain expertise and passion for delivering innovation.

We are a team of Software Engineering Experts devoted to providing highly-specialized, tailored software development and integration services for finance, networking, cloud, & telecom companies. 

We drive customer solutions and provide technological expertise and innovation to the connectivity domain. Currently, we’re searching for a driven, self-reliant Senior Java Software Engineer on the lookout for new, exciting professional challenges.

Location: R&D Office in Krakow


Essential skills:

  • At least  4+ years of experience with Java 8 (or higher) working in software development projects, ideally in the telecoms, network management, or cloud domains.
  • Very good knowledge of Spring framework core components.
  • Experience with messaging (JMS, AMQP, Kafka etc.), Web Services, REST, SQL.
  • Project proven experience with some of the following technologies and tools: Groovy, Kotlin, Mongo, BPMN engines like jBPM, Activity, Camunda.
  • Good knowledge of Spring Boot and various application servers.
  • Experience with test frameworks and tools: Junit5, Spock, JMeter, Postman, etc.
  • Problem-solving skills and attention to detail. 
  • Very good communication skills in English – both verbal and written.

Nice to have:


  • Experience with schema/API description industry standards (OpenAPI/Swagger, JsonSchema, WSDL, etc.)
  • Familiarity with MEF/TMF data models and APIs, especially LSO Sonata API will be a strong asset.
  • Knowledge of OSS, network management and/or telecom protocols & technologies.
  • Hands-on experience in work with microservices and Kafka message bus.
  • Experience with Kubernetes, or Docker.
  • Experience with CI/CD tools: Jenkins, other.
  • Knowledge of modeling languages: YAML.
  • Experience with complex mathematical algorithms and their architecture.
  • Familiarity with Scrum and Agile. 

In this role, you will: 

  • develop modules and functions of enterprise-level products,
  • work on exciting assignments with modern mathematical algorithms architecture,
  • analyze requirements, provide feedback, and suggest improvements,
  • take ownership of the entire project, not only of own deliverables,
  • work on different layers of solutions (with the support of your colleagues),
  • build expertise in back-end Java development. 

online recruitment

flexible working hours & remote work (once at full speed)

comprehensive medical health package

co-financed Multisport card

attractive salary

no dress code, vibrant, pet-friendly office in great location

integration events

flexible forms of employment

corporate library