DevOps Engineer

About T-Systems

T-Systems is one of the leading providers of digital services, offering integrated end-to-end IT solutions and digital transformation of companies in all industries (automotive, financial services, healthcare, public sector, retail, manufacturing industry, transport, and logistics).

We are your partner for digitalization.

As a DevOps Engineer , you will play a key role in maintaining, optimizing, and continuously improving our CI/CD pipelines and test platforms.

You will collaborate closely with architects, developers, and testers to implement technical requirements, ensure smooth delivery processes, and support agile development and testing teams.

Your responsibilities will also include troubleshooting and problem analysis, such as investigating log files and resolving issues to maintain reliable and efficient development environments.

Specific responsibilities:

• Support, maintenance and further development of the CI/CD pipeline (shared library code in groovy: development of new functions and extension of the functionality of the pipeline, support of the tools in the pipeline)
• Support and maintenance of the Kubernetes clusters for the integration/system/acceptance tests, as well as the infrastructure cluster (adaptation of configurations, extension of worker nodes)
• Performing deployments of new container images with the help of Helm
• Support in the connection of so-called peripheral systems, which are made available outside the test environment and connected via a VPN tunnel, as well as support in the provision of peripheral systems in the test environment (e.g. files/text systems, base components), cooperation with the software manufacturers of the peripheral systems and with the responsible contact persons of the customer (sub-project “Integration of peripheral systems”)
• Support of the provisioned services in the Open Telekom Cloud (Elastic Cloud Server, Loadbalancer, Cloud Container Engine,...)
• Support in the maintenance of the existing database systems (Oracle and PostgreSQL) together with the DB administrators
• Processing of requests and work orders submitted by development or test as Jira tickets, e.g. for the implementation of configuration changes or analysis of problems with the test environment

Skills required:

• Practical experience in the implementation and maintenance of a CI/CD pipeline with common tools: Jenkins, maven / npm, Bitbucket/ git, docker, NEXUS, Prometheus/Grafana, EFK stack, Sonarqube, dependencycheck, syft / clair
• Practical experience in working with Linux systems
• Practical experience in supporting and maintaining a Kubernetes cluster and deploying with Helm, using kubectl for creation and customization of Kubernetes objects (namespaces, pods, deployments, ingresses, services,.... )
• Practical experience in dealing with a cloud environment and using the relevant cloud management consoles e.g. in the Open Telekom Cloud
• Experience in support (2nd, 3rd level) for architects, developers and testers and in the use of workflow tools such as Atlassian Jira
• Knowledge of encryption, authentication and authorization processes such as SSL, Oauth2 and OpenID Connect and relevant tools such as Keycloak, as well as security relevant mechanisms in a Kubernetes cluster (mutual TLS)
• Knowledge of relational database systems and their administration (Oracle, PostgreSQL), as well as SQL
• Experience with agile software development in Java and Angular
• Knowledge of Windows Server administration (setting up Windows Server, adapting network configuration, user management)
• Certification in DevOps or cloud environment (CKA or similar, cloud certifications for OTC. AWS, Azure, Google Cloud,...)
• German language skills (written and spoken min. B2)

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