Senior Software Engineer (Java)

We are looking for a Senior Software Engineer (Java) to join Sopra Steria Polska as part of the delivery team responsible for integrating the SimplOpen 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 productionready delivery. You will design and implement technical integrations between LDS platform components and SimplOpen middleware services.

This position combines backend engineering systems integration identity and trust services metadata and semantic interoperability and operational readiness within a federated multistakeholder environment.

Note that we can only offer cooperation to people who has EU citizenship are located in Poland and are willing to commute to our office in Katowice Poland.

Responsibilities:

• 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.

Tech stack on the project:

REST APIs Keycloak Identity and Access Management OAuth 2.0 OpenID Connect Role-Based Access Control (RBAC) Attribute-Based Access Control (ABAC) Java Spring Boot JSON YAML OpenAPI Docker

Qualifications :

Must have requirements:

• Strong proficiency in Java and Spring Boot for building scalable backend applications and implementing servicetoservice communication.
• Handson 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 requirements:

• 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

Additional Information :

What we offer:
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)

The recruitment process for this position consists of two stages:
a short phone call with a recruiter (30 min max)
one-hour long interview on Teams (with both general and technical questions)

Salary range: 

UOP: 12 000-16 000 PLN gross/month.

B2B: 100-140 PLN net/h

All information about salary range and its additional components will be provided during the 1st stage of recruitment process.

At our organization we are committed to fighting against all forms of discrimination. We foster a work environment that is inclusive and respectful of all differences.

Remote Work :

No

Employment Type :

Full-time