Kubernetes Platform Administrator

Claranet limited; Lisboa; Hybrid; EUR 42,000 - 66,000; Full time

Benefits offered by this job

Health insurance

Office facilities for meals and snacks

Regular teambuilding programs

Friendly workplace

Job summary

Claranet Limited is seeking a skilled Kubernetes Platform Administrator to support installation, administration, evolution and automation within an existing platform environment. The role emphasizes hands-on work with Azure, OpenShift, Kubernetes, GitOps and observability tools.

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

Qualifications

• Azure administration experience
• Kubernetes and/or OpenShift experience
• GitOps with Argo CD
• Hands-on Helm and Operators knowledge
• RBAC, LDAP/AD integration and security hardening
• Monitoring and logging tools proficiency
• Structured 2-week sprint delivery experience
• Strong troubleshooting and collaboration skills
• Fluency in Portuguese and English

Responsibilities

• Install, administer, and evolve products and services within an existing platform environment
• Monitor OpenShift clusters and manage quotas, resource limits, RBAC, and AD/LDAP integration
• Configure and maintain Security Context Constraints (SCCs)
• Support and improve CI/CD pipelines using GitOps and Argo CD
• Work with Istio and service mesh technologies
• Maintain the service catalogue with templates
• Implement observability with Grafana and 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 tools

Portuguese

English

Tools

Grafana

Elasticsearch

Istio

Job description

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

Our ambition is to unlockthe potential of our digital world so that organisations everywhere caninnovate and thrive securely. We aim to achieve this goal by bringing togetherthe world’s most talented people and the most powerful technologies, combiningthem to address our customers' challenges and to build something strongertogether.

If you share our vision,join us!

Right now, we’re lookingfor a skilled Kubernetes Platform Administrator to support theinstallation, administration, evolution, and automation of services within anexisting platform environment. This role requires strong hands‑on experiencewith Azure, OpenShift Container Platform (OCP), Kubernetes, CI/CD, and platformobservability.

The ideal candidate willwork in a hybrid delivery model, collaborating closely with infrastructureproviders and internal teams to ensure platform reliability, security, andcontinuous improvement.

Your responsibilitiesinclude:

• Install, administer, and evolve products and serviceswithin an existing platform environment
• Monitor and maintain OpenShift clusters, including:
• Quotas
• Resource limits
• Manage RBAC and integration with Active Directory / LDAP
• Configure and maintain Security Context Constraints(SCCs)
• Support and improve CI/CD pipelines using GitOps andArgo CD
• Work with Service Mesh technologies, such as Istio
• Maintain and evolve the service catalogue using:
• Templates
• Implement and support observability solutions with:
• Grafana
• Analyse logs and troubleshoot issues using Elasticsearch
• Act as a technical interface with the infrastructureprovider
• Contribute to platform stability, operationalexcellence, and continuous improvement

You must have:

• Strong experience inAzure administration
• Practical knowledge ofKubernetes and/or OpenShift
• Experience with GitOpsmethodologies and Argo CD
• Hands‑on knowledge ofHelm, Operators, and platform automation
• Familiarity with RBAC,LDAP/AD integration, and security hardening
• Solid understanding ofmonitoring and logging tools
• Ability to work in astructured 2-week sprint delivery model
• Strong troubleshooting,communication, and collaboration skills
• Fluency in Portuguese andEnglish

We offer:

• Health insurance, withfamily package;
• Office facilities formeals and snacks;
• Regular teambuildingprograms;
• Friendly workplace.