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Senior Java Developer with Kafka

Senior Java Developer with Kafka

ALTEN PolskaKraków, Lesser Poland, Poland
30+ days ago
Job description

technologies-expected :

  • Java
  • Spring Boot
  • MongoDB
  • PostgreSQL
  • Kafka
  • Microsoft Azure
  • Google Cloud Platform

about-project :

  • The project involves building a centralized Java Backend SDK to support internal development across the organization. It focuses on designing reusable modules for data access, messaging, observability, and identity management in distributed systems. The initiative is part of the technology sector and falls under the Backend and Architecture specializations. It is a long-term project developed in an Agile environment with close collaboration between backend, cloud, and frontend teams.
  • Technology Stack :
  • Java, Spring Boot, MongoDB, PostgreSQL, Apache Kafka, cloud environment, Distributed Systems, Observability Tools, Agile
  • Full-time
  • 100% remote (from Poland)
  • Project's start : July, 2025
  • responsibilities :

  • Design and build key modules within company-wide Java Backend SDK
  • Develop utility and functional components across areas such as data access, messaging, observability, identity management, and more
  • Collaborate closely with platform, cloud, and frontend teams to ensure smooth integrations
  • Continuously enhance performance, reliability, and the developer experience
  • Mentor developers and help establish best practices and standards for backend engineering
  • requirements-expected :

  • 5+ years of professional experience in Java development, including Spring Boot
  • Skilled in both MongoDB and PostgreSQL, able to make informed choices about their appropriate use cases
  • Experience with event-driven architectures, ideally with Kafka
  • Knowledgea about distributed systems, with a strong focus on observability and performance optimization
  • Good practice in writing secure, scalable, and maintainable code
  • Familiarity with working in cloud platforms such as Azure, GCP, or AWS
  • Good English - at least B2
  • offered :

  • A full-time contract with possibility to choose the form of employment (UoP / B2B)
  • Stable and long-term cooperation
  • A clearly defined career path and the possibility of development in four areas as : Project Manager, Business Manager, Technical Leader and a specialist in their field
  • Participation in company conferences, trainings, workshops, integration meetings, etc.
  • Certification and training opportunities
  • Opportunity to relocate and work in different ALTEN Polska branches
  • benefits :

  • sharing the costs of sports activities
  • private medical care
  • life insurance
  • dental care
  • retirement pension plan
  • baby layette
  • employee referral program
  • Medicover Benefits platform
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    Senior Java Developer • Kraków, Lesser Poland, Poland