Application Hosting Engineer

Job Description
The
Application Hosting Engineer (OpenShift Specialist)
is responsible for the design, administration and operation of the containerized application hosting platforms based on
Red Hat OpenShift
.

He/she ensures the
availability, performance and security
of hosted applications and underlying infrastructure, collaborating closely with middleware, database and DevOps teams.

Key Responsibilities

• Administration & Operation
• Maintain, operate and optimize Red Hat OpenShift clusters (on-premises).
• Manage worker and control nodes, namespaces, projects and resource quotas.
• Apply patches, upgrades and security fixes to OpenShift and its components.
• Implement monitoring, alerting and capacity management of container platforms.

Integration & Automation

• Develop and maintain CI/CD pipelines (Ansible, ArgoCD).
• Automate operational processes using Ansible, Python or Shell scripting.

Security & Compliance
Implement and maintain security policies, RBAC and compliance baselines.

• Support vulnerability assessments, container image scanning and secrets management.
• Contribute to documentation required for audits, DRP (Disaster Recovery Plan)

Collaboration & Support

• Act as Level 3 escalation point for hosting-related incidents and changes.
• Cooperate with middleware, network and storage teams during troubleshooting.
• Participate in on-call rotations for production support (24/7 basis).

Continual Service Improvement

• Propose enhancements to increase reliability, scalability and automation.

Job Requirements
Required Skills and Competencies
Technical Skills

• Expertise in Red Hat OpenShift (v4.x) and Kubernetes architecture.
• Experience with Linux administration (RHEL or CentOS).
• Knowledge of containerization, pod networking, operators and storage classes.
• Familiarity with CI/CD pipelines, GitOps and Infrastructure-as-Code (IaC).
• Strong understanding of networking, load balancing, certificates (SSL/TLS).
• Experience with monitoring & logging tools (Prometheus, Grafana, ELK).
• Scripting skills (Bash, Python, or Ansible).

Soft Skills

• Analytical mindset and problem-solving ability.
• Rigorous documentation and process-oriented work.
• Good communication in English (French is an asset).
• Teamwork and adaptability in a multi-supplier, multicultural environment.
• Commitment to confidentiality, ethics, and service quality.

Education and Certifications

• Bachelor's or Master's degree in Computer Science, Engineering, or equivalent.
• Certifications (considered an advantage):
• Red Hat Certified Specialist in OpenShift Administration (EX280)
• Red Hat Certified Engineer (RHCE)
• CKA / CKAD (Certified Kubernetes Administrator / Developer)
• ITIL 4 Foundation