Kubernetes Platform Administrator

Claranet Portugal; Lisboa; Hybrid; EUR 52,000 - 72,000; Full time

Benefits offered by this job

Health insurance with family package

Office facilities for meals and snacks

Regular teambuilding programs

Friendly workplace

Regular professional development

Job summary

Claranet Portugal is seeking a skilled Kubernetes Platform Administrator to support installation, administration, evolution, and automation of services within an existing platform environment.

The role requires strong hands-on experience with Azure, OpenShift, Kubernetes, CI/CD, and platform observability. A hybrid Lisbon-based delivery model is expected, collaborating with infrastructure providers and internal teams to ensure platform reliability and security.

Qualifications

• Azure administration expertise.
• Kubernetes and/or OpenShift hands-on experience.
• Experience with GitOps methodologies and Argo CD.
• Hands-on knowledge of Helm, Operators, and platform automation.
• Familiarity with RBAC, LDAP/AD integration, and security hardening.
• Solid understanding of monitoring and logging tools.
• Ability to work in a structured 2-week sprint delivery model.
• Strong troubleshooting, communication, and collaboration skills.
• Fluency in Portuguese and English.

Responsibilities

• Install, administer, and evolve products and services within an existing platform environment.
• Monitor and maintain OpenShift clusters including quotas, resource limits, upgrades, and lifecycle management.
• Automate platform operations using Operators (OLM).
• Manage RBAC and integration with Active Directory / LDAP.
• Configure and maintain Security Context Constraints (SCCs).
• Support and improve CI/CD pipelines using GitOps and Argo CD.
• Work with Service Mesh technologies, such as Istio.
• Maintain and evolve the service catalogue using templates and Helm Charts.
• Implement and support observability solutions with Prometheus and Grafana.
• Analyse logs and troubleshoot issues using Elasticsearch.
• Act as a technical interface with the infrastructure provider.
• Contribute to platform stability, operational excellence, and continuous improvement.

Skills

Azure administration

Kubernetes

OpenShift

GitOps

Argo CD

Helm

RBAC

LDAP/AD integration

Security hardening

Monitoring

Logging

Istio

Prometheus

Grafana

Elasticsearch

Tools

OpenShift

Kubernetes

Argo CD

Helm

Operators

Job description

Mandatory Certifications

• Microsoft Certified: Azure Data Fundamentals

We're fast learners, hard workers, natural collaborators... and we Make Modern Happen !

Our ambition is to unlock the potential of our digital world so that organisations everywhere can innovate and thrive securely. We aim to achieve this goal by bringing together the world’s most talented people and the most powerful technologies, combining them to address our customers' challenges and to build something stronger together.

If you share our vision, join us!

Right now, we’re looking for a skilled Kubernetes Platform Administrator to support the installation, administration, evolution, and automation of services within an existing platform environment. This role requires strong hands‑on experience with Azure, OpenShift Container Platform (OCP), Kubernetes, CI/CD, and platform observability.

The ideal candidate will work in a hybrid delivery model, collaborating closely with infrastructure providers and internal teams to ensure platform reliability, security, and continuous improvement.

Responsibilities

Your responsibilities include

• Install, administer, and evolve products and services within an existing platform environment
• Monitor and maintain OpenShift clusters, including:
  • Quotas
  • Resource limits
  • Upgrades
  • Lifecycle management
• Automate platform operations using Operators (OLM)
• Manage RBAC and integration with Active Directory / LDAP
• Configure and maintain Security Context Constraints (SCCs)
• Support and improve CI/CD pipelines using GitOps and Argo CD
• Work with Service Mesh technologies, such as Istio
• Maintain and evolve the service catalogue using:
  • Templates
  • Helm Charts
• Implement and support observability solutions with:
  • Prometheus
  • Grafana
• Analyse logs and troubleshoot issues using Elasticsearch
• Act as a technical interface with the infrastructure provider
• Contribute to platform stability, operational excellence, and continuous improvement

You Must Have

• Strong experience in Azure administration
• Practical knowledge of Kubernetes and/or OpenShift
• Experience with GitOps methodologies and Argo CD
• Hands‑on knowledge of Helm, Operators, and platform automation
• Familiarity with RBAC, LDAP/AD integration, and security hardening
• Solid understanding of monitoring and logging toolsAbility to work in a structured 2‑week sprint delivery model
• Strong troubleshooting, communication, and collaboration skills
• Fluency in Portuguese and English

Mandatory Certifications

• Microsoft Certified: Azure Data Fundamentals
• Microsoft Certified: Azure Administrator Associate
• Microsoft Certified: DevOps Engineer Expert

We Value

• Certified Kubernetes Administrator (CKA)

We Offer

• Regular professional development;
• Health insurance, with family package;
• Office facilities for meals and snacks;
• Regular teambuilding programs;
• Friendly workplace.

Workplace

Lisbon – Hybrid - Minimum 5 on-site days per 2‑week sprint

Claranet, Make modern happen!