RedHat Openshift Application Administrator

Company Description

Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development. Arηs Group was acquired by Accenture in July 2024. 

Job Description

• Configuration, Deployment and Maintenance of containerized applications on OpenShift (manifests, Helm, Templates, Operators...)
• Managing namespaces / projects for applications (RBAC, quotas, limit ranges, resource management etc.)
• Configuration of application exposure and routing (Routes, Services, TLS, external access, load balancing)
• Implementation and maintenance of application security (SCC, PodSecurity, Network Policies, secrets’ rotation)
• Application scaling and optimisation (resource tuning, performance troubleshooting)
• Support for development teams (pod troubleshooting, logs, events, restarts, rollbacks)
• Collaboration on requests for new functionalities / resources for applications
• Monitoring application health and performance (alerts, dashboards, capacity planning)
• Preparing and updating documentation for applications, SOPs, application runbooks

Qualifications

Mandatory requirements:

• Bachelor plus a minimum of 7years of relevant professional experience
• Presents excellent command of English, at least at B2 level
• Minimum 3 years of experience in a similar position
• Required Certificates (At least one of the following):
  • Red Hat Certified OpenShift Administrator (or equivalent certification)
  • Or additional 3 years of experience with OpenShift administration beyond the minimum required for similar positions
  • any equivalent certification must be internationally recognized (subject to acceptance by the Contracting Authority)
• Minimum 3 years of daily hands-on working with OpenShift applications (deployment, troubleshooting, scaling, application configuration)
• Experience in managing projects/namespaces for applications (creation, quotas, limit ranges, RBAC)
• Practical knowledge in configuring and troubleshooting Routes / Services / Ingress for applications (TLS, path-based routing etc.)
• Experience in implementing Network Policies and Security Constraints on application / namespace level
• Experience in application monitoring and logging (built-in OpenShift tools + Prometheus, Grafana, application specific metrics)
• Expertise in GitOps / ArgoCD, Helm charts - application of changes from Git to specific namespaces / apps
• Strong scripting and automation skills with proficiency in Ansible, Python, Helm charts
• Experience in deploying, configuring, and maintaining containerized applications in RedHat OpenShift
• Expertise in working with YAML / Helm charts, OpenShift templates for application deployment
• Knowledge of OpenShift application model: Projects / Namespaces, Service Accounts, Secrets, ConfigMaps etc.
• Knowledge of application security settings (Pod Security Admission / Standards, Security Context Constraints, Network Policies per app, image signing / scanning)
• Experience in scaling and optimisation of applications (Horizontal Pod Autoscaler, Vertical Pod Autoscaler, resource requests/limits, probes)
• Knowledge of application exposure (Routes, Services, Ingress, ExternalName, TLS termination, API Gateway patterns)
• Experience in CI/CD for OpenShift applications (pipelines, Jenkins, ArgoCD / GitOps)

Additional Information