Diconium
Java Backend Engineer
Skills
Job description
About the Company
Embitel Technologies is a Volkswagen AG (VW) Group Company. VW is a German multinational automotive manufacturing corporation headquartered in Wolfsburg, Germany. VW is one of the world’s largest automaker by sales. VW sold 10.9 million vehicles in 2019. The group comprises of 12 brands from seven European Countries: Volkswagen, Audi, Lamborghini, Porsche, Bugatti, Bentley, Ducati (motorcycles), Skoda, SEAT, Scania, MAN and Volkswagen commercial vehicles.
Job Description:
PFB JD
Backend Engineer
Two engineers are required for 6–8 weeks. Both are expected to cover the full scope of the migration - backend SPI development, infrastructure changes, and OIDC integration.
Role Description
The migration rewrites a Keycloak User Storage SPI (Java, EJB → Quarkus), upgrades the Keycloak runtime and supporting infrastructure, and configures GRP as an external OIDC Identity Provider. Engineers on this project will work across all three layers: Java provider code, container/CI configuration, and OIDC/identity federation.
Must Have
Java (professional level, Java 11 or later) - all three Maven components target Java 21
Keycloak SPI development - has written or maintained a User Service Provider or equivalent; understands how providers are packaged and deployed to Keycloak
JPA / Hibernate - comfortable managing an lifecycle without container injection
OIDC / OAuth 2.0 - understands token structure, identity federation, and broker login flows; must be able to configure an OIDC Identity Provider in Keycloak and interpret token claims
Docker (multi-stage builds) - the Dockerfile is a full rewrite from a WildFly entrypoint model to a Quarkus two-stage build
AWS
Good to Have
Jakarta EE migration experience
Quarkus (datasource configuration, extension model)
Keycloak administration - configuring realms, clients, identity providers, and mapper flows via the admin UI and REST API
AWS ECS / ECR - image promotion via CI/CD pipeline
GitHub Actions - updating existing workflows
PostgreSQL - version upgrade (13 → 17); no schema changes required
Spring Security - existing password verification logic is preserved in the SPI
Github Copilot
Working with Embitel
- Freedom to challenge norms, make mistakes, learn and grow
- There is no ‘I’ in word ‘Team’ and no hierarchy at Embitel
- Employees of Embitel are partners of our excellence and growth. And they are at the core of
organization’s Mission and Vision
To explore an exciting & progressive Career development at Embitel India:
- Visit us at: www.embitel.com
- Follow us at https://www.linkedin.com/company/embitel-technologies-india