Our client is looking for an experienced Senior Infrastructure and DevOps Consultant to join full-time as soon as possible, for an engagement of at least 6 months with the possibility of extension. You will work closely with the client's existing Infrastructure Consultant to assess, document, maintain and improve the client's infrastructure. This includes preparing it for a new webservice while keeping the legacy application running. The ideal candidate is technically rigorous, quick to understand complex systems, and able to provide technical leadership on complex problems within a collaborative, shared team structure.

Key Responsibilities

• Document the existing infrastructure, configurations, dependencies and automated processes
• Maintain and advance the virtualisation, high-availability, storage, container, backup and disaster recovery environments, with a focus on security and availability
• Administer critical services, including databases, monitoring, logging, source-code management and CI/CD
• Design, stabilise and improve Jenkins pipelines, automated testing environments, deployments and configuration-management processes
• Run a rapid assessment of infrastructure health, risks and urgent priorities, and produce a prioritised remediation and improvement plan
• Troubleshoot complex incidents, carry out root-cause analyses and put sustainable corrective and preventive actions in place
• Identify architectural risks, obsolete components, capacity constraints and single points of failure
• Produce and maintain architecture diagrams, service inventories, dependency maps, operational runbooks and recovery procedures
• Make sure backup, restoration and recovery procedures are tested and reliable
• Report regularly on infrastructure health, incidents, risks, changes and priorities
• Work closely with the development, business and support teams, taking part in the development cycle for infrastructure-related tasks
• Share technical knowledge and working methods to strengthen the team's collective capacity and ensure continuity

Required Skills and Experience

• At least 6 years of senior-level experience in Linux infrastructure or systems engineering, including responsibility for production environments
• Proven ability to analyse, reconstruct and stabilise complex or poorly documented infrastructure
• Strong hands-on experience with high-availability virtualisation, storage, Linux and containerised services
• Hands-on experience with Proxmox VE (HA clusters) and Proxmox Backup Server, Ceph/CephFS, ZFS and LXC containers on dedicated OVH-hosted infrastructure
• Experience with Debian Linux and PostgreSQL
• Strong experience with CI/CD pipelines, automated testing infrastructure, deployment automation and configuration management, including Jenkins, Jenkins agents, Git and Gitea
• Experience with monitoring and logging tools such as Icinga, Grafana and Loki
• Experience with web services, reverse proxies and networking
• Experience with database operations, monitoring, networking, security, backups and disaster recovery
• Proven ability to diagnose complex incidents, find root causes and put sustainable solutions in place
• Excellent technical documentation, prioritisation and communication skills
• Ability to provide technical leadership while sharing responsibilities, decisions and knowledge with the team
• Ability to support team members' professional development through joint work, constructive review and practical knowledge transfer
• Professional proficiency in English