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Senior Java API Engineer
  • Kraków
Senior Java API Engineer
Kraków, Kraków, Lesser Poland Voivodeship, Polska
ITDS Polska Sp. z o.o.
5. 2. 2026
Informacje o stanowisku

technologies-expected :


  • Java
  • Docker
  • Kubernetes
  • Kafka
  • Splunk
  • Grafana
  • Prometheus
  • Jaeger
  • Kiali
  • OpenTelemetry
  • SQL

technologies-optional :


  • Go
  • Rust
  • Linux

about-project :


  • As a Senior Java API Engineer, you will be working for our client, a leading financial institution, delivering State Architecture for payment processing. You will help introduce a lean, reusable payment processing engine that forms the backbone of next-generation payment capabilities. Leveraging existing software within an inner sourcing model focused on reuse and enhancement, you will contribute to rapidly delivering innovative financial products with high quality and efficiency.
  • Krakow-based opportunity with hybrid work model (up to 3 remote days per week).
  • Empower financial technology - shape the future of payment processing systems!

responsibilities :


  • Deliver engineering expertise to develop and implement Architecture, producing world-class payment processing capabilities.
  • Write high-quality, robust code artifacts, ensuring quality standards are met and comprehensive test scripts are included.
  • Focus on delivering highly available, resilient software and service capabilities within the payment ecosystem.
  • Collaborate with the delivery team to design and develop new functionalities.
  • Support the modernization of the current payment estate, adopting cloud-based technology and best practices.
  • Set high standards for software delivery, leading by example.
  • Provide technical solutions and guidance for complex technical and business issues.
  • Maintain awareness of business and technology strategies, and recommend innovative technical solutions for competitive advantage.
  • Manage complex technical infrastructure to meet evolving business needs.
  • Partner with DevOps teams to automate infrastructure delivery, implement DevSecOps practices, and optimize CI/CD pipelines.
  • Conduct feasibility analyses, cost/benefit evaluations, and detailed specifications for large systems.
  • Design, code, test, debug, and document payment systems aligned with global standards.
  • Uplift architecture guidance based on best practices, ensuring compliance with controls and security standards.
  • Stay current with advancements in cyber security, data privacy, and relevant regulations.

requirements-expected :


  • 15+ years of applied experience as an API engineer, with at least 10 years in backend microservices application development.
  • Strong expertise in API designing and architectural artefacts such as gap analysis, data models, and low-level designs.
  • Extensive programming experience in Java, with knowledge of Go and Rust preferred.
  • Proven skills in JVM tuning, application troubleshooting, and performance optimization.
  • Deep knowledge of distributed system design, including microservices architecture with Spring Boot.
  • Hands-on experience with Docker, Kubernetes, service mesh, and Kafka, including cluster configuration and software development.
  • Proficiency in monitoring and observability tools such as Splunk, Grafana, Prometheus, Jaeger, Kiali, and OpenTelemetry.
  • Solid understanding of cloud platforms, networking (VPC), security, and DevOps practices.
  • Strong SQL coding skills and experience with distributed databases.
  • Experience working in financial institutions, especially in payments domain.
  • Ability to work independently, innovate, and lead technical initiatives.
  • Leadership skills with a passion to mentor and develop technologists.
  • Excellent communication skills in English, with the ability to negotiate and influence technical decisions.

offered :


  • Stable and long-term cooperation with very good conditions
  • Enhance your skills and develop your expertise in the financial industry
  • Work on the most strategic projects available in the market
  • Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
  • Participate in Social Events, training, and work in an international environment
  • Access to attractive Medical Package
  • Access to Multisport Program
  • Access to Pluralsight
  • Flexible hours

benefits :


  • sharing the costs of sports activities
  • private medical care
  • flexible working time
  • fruits
  • integration events
  • corporate gym
  • saving & investment scheme
  • no dress code
  • coffee / tea
  • drinks
  • christmas gifts
  • birthday celebration
  • sharing the costs of a streaming platform subscription
  • access to +100 projects
  • access to Pluralsight

  • Praca Kraków
  • Kraków - Oferty pracy w okolicznych lokalizacjach


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