System Engineer (Kubernetes, Cluster API)

About the role

T-Systems Iberia is looking for a System Engineer to join the Telco Hub in Madrid, which merges IT and Telco and builds and scales a Telco-as-a-Platform on a proprietary layered cloud. The role helps engineer a fully automated Kubernetes platform based on Cluster API that provides clusters to internal tenants, working in cross-country, cross-functional squads.

Key responsibilities

• Write software that automatically deploys clusters, manages software components running on them and integrates with the surrounding infrastructure.
• Contribute to upstream open-source projects used by the team to improve and fix bugs.
• Configure software components on clusters to provide platform features.
• Support and enable the migration of existing Kubernetes clusters to the new management platform.
• Provide third-level support to the operations teams running Kubernetes platforms across Europe.

Required profile

• Solid software engineering experience (any languages, platforms).
• Fluent English, speaking and listening (B2).
• At least basic knowledge of Go, ideally used for several years.
• Experience with microservice/cloud architecture (HTTP APIs, small decoupled programs).
• Strong background in Kubernetes, preferably with hands-on operation experience.
• Optional: contributions to open-source projects.

Required skills

• Git and GitLab
• Kubernetes and Cluster API
• Atlassian Jira and Confluence
• CI/CD: GitLab CI, GitHub Actions
• Optional: OpenStack, vSphere vCenter, bare-metal servers (Redfish API), Netbox, controller-runtime (kubebuilder)

What we offer

• International, dynamic and collaborative environment with a hybrid work model and flexible hours.
• Customised training, including access to Coursera, weekly English and German classes, international mentoring sessions and experience days.
• Flexible compensation plan (health insurance, meal vouchers, childcare, transport), telemedicine, life and accident insurance and a social fund.
• 26+ working days of vacation per year and specialist services coverage.