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Senior Backend Developer
  • Kraków
Senior Backend Developer
Kraków, Kraków, Lesser Poland Voivodeship, Polska
Mindbox Sp. z o.o.
8. 2. 2026
Informacje o stanowisku

technologies-expected :


  • Java
  • Spring Boot
  • Docker
  • Kubernetes
  • Kafka
  • SQL

about-project :


  • Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.

responsibilities :


  • Design APIs and create architectural artefacts such as gap analysis, low-level designs, and data models.
  • Develop and optimize back-end microservices applications with a focus on security, authentication, and performance.
  • Work on distributed systems using Spring Boot, Docker, Kubernetes, and service mesh technologies.
  • Build and configure Kafka clusters and develop producers/consumers for high-throughput messaging.
  • Implement monitoring and observability solutions using Splunk, Grafana, Prometheus, Jaeger, Kiali, and OpenTelemetry.
  • Collaborate on cloud and DevOps initiatives, including VPC, firewall, IAM, and cost optimization.
  • Ensure system reliability and scalability for real-time transaction processing.
  • Note: Detailed project information will be shared during the recruitment process.

requirements-expected :


  • 9+ years of engineering experience in back-end microservices development.
  • Experience in Java development,
  • Strong knowledge of JVM tuning, troubleshooting, and performance optimization.
  • Experience with distributed system design, Spring Boot, and microservices architecture.Proficiency in Docker, Kubernetes, and service mesh.
  • Hands-on experience with Kafka (cluster setup and development).
  • Familiarity with cloud platforms, networking, and infrastructure (Linux OS, storage, load balancing, Kubernetes CNI).
  • Strong SQL coding skills and understanding of distributed databases.

offered :


  • We are open to the employment form according to your preferences
  • Work with experienced and engaged team, willing to learn, share knowledge and open for growth and new ideas
  • Hybrid working system (Warsaw/Cracow)
  • Mindbox is a dynamically growing IT company, but still not a large one – everybody can have a real impact on where we are going next
  • We invest in developing skills and abilities of our employees
  • We have attractive benefits and provide all the tools required for work f.e.computer
  • Interpolska Health Care, Multisport, Warta Insurance, training platform (Sages)

benefits :


  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of professional training & courses
  • life insurance

  • Praca Kraków
  • Kraków - Oferty pracy w okolicznych lokalizacjach


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