Senior Java Developer (Keycloak) – IAM Platform Lead

Vaillant Group; Katowice; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Hybrid work model

Private medical care

Sports card subsidy

Group insurance

Paid time off

Mentoring programs

Job summary

Vaillant Group in Katowice is seeking a Senior Java Developer (Keycloak) to design and deliver scalable digital identity solutions for customers and employees across the lifecycle of heating solutions.

You will own a Keycloak-based Customer Identity Management system, develop secure Java web services with JEE and Spring using REST, and deploy with CI/CD in a modern cloud-ready environment. English on a business level is required.

Qualifications

• Degree in Computer Science or a comparable qualification.
• Over five years of professional experience as a Software Developer.
• Experience in Java web services using JEE and Spring with REST architectures.
• Solid knowledge of Identity and Access Management (Keycloak, OAuth, OpenID Connect).
• Nice to have Kotlin, cloud-based SDLC, Kubernetes, CI/CD pipelines and GitOps.
• Familiarity with agile development methods and modern architectural patterns.
• Business-fluent English communication.

Responsibilities

• Own a Keycloak-based Customer Identity Management system and further develop it for stability and scalability.
• Transform reusable functionalities into secure, high-performing APIs.
• Implement monitoring and testing solutions to ensure platform quality and reliability.
• Collaborate with an interdisciplinary team to operate GitOps-based CI/CD pipelines and infra provisioning.

Skills

Java

Keycloak

REST APIs

JEE

Spring

IAM

Kotlin

Kubernetes

CI/CD

GitOps

Education

Degree in Computer Science

Tools

Git

OpenID Connect

OAuth

Jenkins

Job description

Vaillant Group in Katowice is seeking a Senior Java Developer (Keycloak) to design and deliver scalable digital identity solutions for customers and employees across the lifecycle of heating solutions.

You will own a Keycloak-based Customer Identity Management system, develop secure Java web services with JEE and Spring using REST, and deploy with CI/CD in a modern cloud-ready environment. English on a business level is required.