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Senior Software Engineer (Java)

https://www.soprasteria.com Logo

Sopra Steria

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Location:
Poland , Katowice

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Category:
IT - Software Development

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Contract Type:
Employment contract, B2B

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Salary:

12000.00 - 16000.00 PLN / Month ▼
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Job Description:

We are looking for a Senior Software Engineer (Java) to join Sopra Steria Polska as part of the delivery team responsible for integrating the Simpl‑Open middleware into the Language Data Space (LDS). In this role, you will focus on secure participant onboarding, connector and middleware interoperability, identity and access integration, metadata publication and discovery, vocabulary alignment, and production‑ready delivery. You will design and implement technical integrations between LDS platform components and Simpl‑Open middleware services. This position combines backend engineering, systems integration, identity and trust services, metadata and semantic interoperability, and operational readiness within a federated, multi‑stakeholder environment.

Job Responsibility:

  • Design and implement APIs, adapters, connectors, and integration services between LDS components and Simpl-Open capabilities
  • Implement participant onboarding, secure communications setup, and connector registration workflows
  • Integrate authentication, authorization, role assignment, attribute mapping, and directory-connected access-management patterns
  • Implement metadata publication, catalogue interaction, discovery flows, validation rules, and transformation logic
  • Support vocabulary management, semantic mappings, and multilingual metadata interoperability
  • Contribute to deployment automation, integration testing, observability, troubleshooting, and technical documentation

Requirements:

  • 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

Nice to have:

  • 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
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 21, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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