Junior Software Engineer (Java)

Implement backend services, API integrations, and technical adapters under the guidance of senior engineers.
Configure and integrate identity, authentication, authorization, and connector-related services.
Develop and maintain integration logic for metadata exchange, catalogue interfacing, and validation flows.
Support vocabulary-related interoperability, mappings, and configuration tasks.
Prepare and execute technical tests, including integration tests, deployment verification, and regression checks.
Investigate incidents, defects, and integration issues in development and test environments.
Contribute to CI/CD activities, containerised deployments, and runtime support tasks.
Produce concise technical documentation, configuration notes, and implementation handover material.

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.

Exposure to identity and access management platforms, metadata catalogues, semantic technologies, or data-platform delivery is an advantage.
Experience with public-sector digital platforms, interoperability solutions, or EU-funded technical environments is also beneficial.

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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