Junior Software Engineer (Java) Job at Sopra Steria (Katowice)

Junior Software Engineer (Java)

Sopra Steria

Location:
Poland , Katowice

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

5500.00 - 8500.00 PLN / Month

Save Job

Apply Position

Job Description:

We are looking for a Junior Software Engineer (Java) to join Sopra Steria Polska and support the development team responsible for integrating the Simpl-Open middleware into the Language Data Space (LDS) ecosystem. In this role, you will contribute to software development, technical integration, configuration, testing, deployment support, and operational troubleshooting. You will collaborate closely with senior engineers, architects, and technical leads as part of a cross-functional engineering team delivering interfaces and runtime integrations between LDS components and Simpl-Open services.

Job Responsibility:

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

Requirements:

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

Nice to have:

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

What we offer:

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

Additional Information:

Job Posted:
March 19, 2026

Employment Type:

Fulltime

Work Type:

On-site work

Sopra Steria - All Job Offers

Job Link Share: