Deutsche Telekom IT Solutions Slovakia: Senior DevOps Engineer- IAM

Headquarters: Moldavská cesta, 040 11 Košice, Slovakia URL: http://deutschetelekomitsolutions.sk

Company Description

Job Description

At least 3 years of work experience as DevOps / Platform Engineer (or SRE) with hands-on Kubernetes operations in production environments.Solid understanding of OAuth 2.0 and OpenID Connect concepts for modern IAM integrations and SSO flows.​Practical experience with GitOps delivery using Argo CD (Git-driven continuous delivery for Kubernetes).​Experience working with containers (Docker) and CI/CD pipelines (e.g. GitLab) from commit to production.Comfortable scripting in Python and Bash for automation and troubleshooting tasks.

IAM fundamentals: authentication vs authorization, identity lifecycle and provisioning flows, role/permission model design, user types, and machine-to-machine concepts.Keycloak/RHSSO: hands-on experience with realms, clients, roles, scopes, identity providers, and themes, including troubleshooting authentication and authorization flows end-to-end.Configuration-as-code mindset for Keycloak: managing realms/clients/roles via versioned configuration and promoting changes across environments.Operability: diagnose and resolve platform issues (CPU/memory pressure, pod health, configuration errors), contribute to incident response, and support upgrades and migrations.

Kubernetes & networking: experience with deployments, services, ingress, environment-specific configuration, and secure handling of secrets/config maps.Packaging & delivery: Helm charts and Argo CD application management, including using Helm-based deployments through Argo CD for GitOps workflows.Experience in CI/CD using GitLab, including building, testing, and deploying containerized workloads.Infrastructure as Code (IaC) approach for managing environments and application infrastructure.Observability: experience with Grafana/Prometheus, ELK stack, and basic Dynatrace usage for monitoring, alerting, and troubleshooting.

Experience with PostgreSQL in operational contexts (backups and restore, basic performance indicators, connection troubleshooting).General understanding of how Keycloak and IAM components rely on Postgres and what typical failure modes look like.

Experience with OAuth 2.0, OpenID Connect, and JWT-based authentication for Keycloak integrations.​Understanding of TLS/certificates and secure exposure of IAM endpoints.Experience using monitoring and load-testing tools (e.g. Prometheus/Grafana, JMeter) to observe performance, capacity, and stability of IAM services.

Designs, develops, tests and implements infrastructure for CI/CD pipelines and IaC.Manages source code, configuration management, release management, build and deployment activities.Setups and manages integration with partner applications.Conducts of performance analyses and tunings as well as error analyses and troubleshooting.Consults and implements new innovative technologies to satisfy innovation strategy.Creates concepts for further automation of services, processes and/or operating models.Directly support the project teams in the development, quality assurance accompanying development as well as planning and implementation of product releases.Continuously optimizes the development and system infrastructure.Provides consulting to project teams on areas of expertise also Prototypes/Proof of Concept solutions.Researches and develops in assigned technology, determines business requirements, proposes changes and prepares implementation plans.

Qualifications

Keycloak / RHSSO / RHBK, OAuth2, OpenID Connect, JWT.​Kubernetes, Docker, Ingress, Helm, Argo CD.​Git, CI/CD (GitLab), GitOps.​Python, Bash (plus Go/Java as a plus for automation and extensions).Grafana, Prometheus, ELK, Dynatrace.PostgreSQL.AWS and other cloud platforms (as a plus).have secondary education of Information technologies – Masterhave experiences with ICT System – 4 yearshave experience with Scripting (Bash, Python) – Experthave experience with Linux Operating System – Experthave experience with OTC / AWS / Azure – Intermediatehave experience with Docker – Experthave experience with Kubernetes / OpenShift – Advancedhave experience with Git – Experthave experience with Jenkins / GitLab – Advancedhave experience with Maven / Gradle – Intermediatehave experience with Ansible / Terraform / Puppet – Advancedhave experience with ELK / Prometheus / Icinga /  Jaeger / Grafana – Advancedhave experience with Networking - Experthave experience with Security - Advancedare communicative, team player and have analytical thinking, training skills and presentation skillsspeak English – Upper intermediate (B2)have experiences with Agile Methodology, Scrum and SAFe

Additional Information

Financial benefitsBenefits with focus on learning and developmentBenefits with focus on health and sportBenefits with focus on family and work – life balanceOther benefits