Description:

The Senior DevOps Engineer is responsible for the entire lifecycle of Continuous Integration/Continuous Deployment (CI/CD) pipelines and Infrastructure as Code (IaC) approaches.
This role involves defining automated configuration management, release management, build, test, and deployment activities.
The engineer will provide prototypes and concepts for further automation of assigned technology.
The position is part of an international team working on a significant project for Deutsche Telekom Group, impacting 30 million customers.
The product includes applications and websites that support end-to-end processes such as Fiber pre-ordering, ordering, installation, service management, and customer support.
The engineer will develop and operate Keycloak/RHSSO-based IAM capabilities on Kubernetes, enabling secure SSO and machine-to-machine access for internal products.
Responsibilities include standardizing deployment, configuration, and troubleshooting practices, while continuously improving reliability, security, and automation around the IAM platform.

Requirements:

Candidates must have at least 3 years of work experience as a DevOps/Platform Engineer (or SRE) with hands-on Kubernetes operations in production environments.
A solid understanding of OAuth 2.0 and OpenID Connect concepts for modern IAM integrations and SSO flows is required.
Practical experience with GitOps delivery using Argo CD is necessary.
Experience working with containers (Docker) and CI/CD pipelines (e.g., GitLab) from commit to production is essential.
Candidates should be comfortable scripting in Python and Bash for automation and troubleshooting tasks.
Hands-on experience with Keycloak/RHSSO, including realms, clients, roles, scopes, identity providers, and themes, is required.
A configuration-as-code mindset for Keycloak management is necessary.
Experience with Kubernetes networking, Helm charts, and CI/CD using GitLab is required.
Candidates should have experience with PostgreSQL in operational contexts and a general understanding of how Keycloak and IAM components rely on Postgres.
Knowledge of security practices, including OAuth 2.0, OpenID Connect, and JWT-based authentication, is essential.
Candidates must have a Master's degree in Information Technologies and at least 4 years of experience with ICT systems.

The company offers over 25 different benefits to improve employees' personal and professional lives, focusing on financial benefits, learning and development, health and sport, family and work-life balance, and other benefits.
An attractive work-life balance portfolio is provided to promote physical and mental well-being.
The final salary is negotiable, with a base salary starting at no less than 2600€ /brutto, depending on seniority level and previous experience.
In addition to the base salary, a variable part and other financial benefits are included.
Remote working is available, but only within Slovakia due to European taxation regulations.

Skills