Senior Software Engineer (Java)

Strong proficiency in Java and Spring Boot for building scalable backend applications and implementing service‑to‑service communication.
Hands‑on experience with containerization technologies, particularly Docker, including building, running, and troubleshooting containerized applications.
Experience working with REST APIs and API specification formats such as OpenAPI, using JSON and YAML for defining and documenting services.
Knowledge of modern authentication and authorization standards, including OAuth 2.0 and OpenID Connect, and the ability to integrate secure identity flows into backend services.
University degree in Computer Science, Software Engineering, Information Systems, Telecommunications, or equivalent experience.
Several years of hands-on experience in backend engineering, middleware engineering, platform integration, or distributed-systems delivery.
Strong command of API-based integration, authentication and authorization integration, containerized delivery, and operational support.
EU citizenship.
Fluent English: B2/C1.
Being open to occasional business trips abroad and visits to our office in Katowice.

Strong proficiency in Java and Spring Boot for backend service development.
Hands‑on experience with containerization and orchestration tools, specifically Docker and Kubernetes.
Experience with backend development and API-based integration.
Good command of secure application integration and service-to-service communication.
Experience with version control, debugging, testing, and software delivery practices.
Familiarity with containerized environments and deployment support activities.
Ability to analyze issues methodically and deliver reliable technical fixes.
Willingness to learn, document work clearly, and contribute in a team-oriented delivery setting
Experience working with REST APIs and API specification formats such as OpenAPI using JSON/YAML.
Knowledge of authentication and authorization technologies, including Keycloak, OAuth 2.0, and OpenID Connect.
Degree in Computer Science, Software Engineering, Information Systems, Telecommunications, or equivalent practical experience.
Professional experience in software development, systems integration, platform engineering, or backend delivery.
EU citizenship.
Fluent English: B2/C1.
Being open to occasional business trips abroad and visits to our office in Katowice.

Experience with Keycloak or comparable identity platforms.
Experience with data catalogues, metadata validation, vocabulary management, or schema-governance mechanisms.
Experience with container platforms, CI/CD, logging and monitoring stacks, and automated deployment practices.
Experience with data spaces, interoperability frameworks, or European digital-platform environments

BENEFITS (UoP): Luxmed, Medicover Sport, Worksmile, educational platforms, languages learning platform, referral bonus, copyrights, life insurance, workation
DEVELOPMENT OPPORTUNITIES (UoP and B2B): certifications (paid by the company), conferences, Tech Lunches, possibility to join our Communities (Project Management, Architecture, Security, Process Management, Leadership, AI and Cloud)

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