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# Senior Software Developer - Keycloak Identity & Access Management

- **Company:** EVENTIM
- **Location:** Berlin, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Agile Methodology, Amazon Web Services, Apache HTTP Server, User Authentication, Microsoft Azure, Cloud Computing, Code Review, System Configuration, Distributed Systems, Federated Identity Management, Monitoring of Systems, Identity and Access Management, Lua (Scripting Language), Nginx, OAuth, E2e Testing, Openid Connect, Single Sign-On, Software Engineering, Google Cloud, Cloud Platform System, Okta, System Availability, Grafana, Software Security, Infrastructure as Code (IaC), Containerization, Kubernetes, Api Gateway, Terraform, Api Management
- **Published:** October 12, 2026
- **Apply:** https://www.adzuna.de/details/5922443388

## About the Role

* Several years of solid experience in Java software development, including working with large-scale, business-critical production systems.
 * Practical experience with Identity & Access Management (IAM) and a strong understanding of the technical and security challenges of modern authentication systems.
 * Ideally, extensive hands-on experience with Keycloak, including its architecture, configuration, and particularly its customization and extension capabilities.
 * A solid understanding of OpenID Connect and OAuth 2.0, including the underlying authentication flows, tokens, and security concepts.
 * Experience with API Management and API Gateways, including their integration with modern authentication and authorization solutions.
 * Hands-on experience operating distributed applications in clustered or cloud environments, with a strong interest in scalability, performance, and observability.
 * A strong interest in Application Security and Identity Security, with a security-first mindset throughout design and implementation.
 * The ability to explain complex technical concepts clearly and collaborate effectively with developers, architects, product teams, and international stakeholders.
 * Very good German and good English language skills complete your profile.

Nice to have:

 * Experience with Keycloak customization, SPIs, and extensions
 * Experience with Quarkus
 * Hands-on experience with API Gateway technologies, ideally OpenResty-based solutions such as Kong or Apache APISIX
 * Knowledge of NGINX, OpenResty, or Lua for configuring and extending API Gateways
 * Experience with Kubernetes and container technologies
 * Experience with Terraform/Terragrunt and Infrastructure as Code (IaC)
 * Experience with monitoring and observability tools, such as Grafana Cloud
 * Experience with automated integration and end-to-end testing
 * Experience with cloud platforms such as AWS, Google Cloud, or Azure
 * Familiarity with agile software development methodologies

## Description

As a Senior Software Developer, you will work alongside your team to continuously develop and enhance these platforms, shaping essential solutions around Identity & Access Management, Authentication, and Security., * Identity & Access Management: Develop, configure, and operate our central Identity & Access Management platform based on Keycloak, together with your team.

 * Keycloak Development: Build extensions and integrations for Keycloak, adapting the platform to the requirements of our products and international markets.
 * Authentication & Authorization: Design secure and scalable solutions using OpenID Connect, OAuth 2.0, Single Sign-On, and Identity Federation.
 * API Management: Further develop our API Gateway and API Management solutions and integrate them with our identity platform, particularly regarding API security, token validation, and access control.
 * Platform Reliability: Take ownership of the stability, scalability, security, and observability of our identity platform in production.
 * Troubleshooting: Analyze technical issues and contribute to sustainable solutions for incidents and performance challenges.
 * Stakeholder Collaboration: Work directly with internal customers, product teams, and international EVENTIM entities to understand requirements and develop suitable technical solutions.
 * Technical Architecture: Actively contribute your expertise to architecture decisions, technical concepts, and reviews.
 * Knowledge Sharing: Support fellow developers through knowledge sharing, code reviews, and technical guidance.