Lead Linux System Administrator

Responsibilities:

• Lead and develop the team: set priorities, plan work, mentor team members, conduct one-to-one meetings and performance reviews, and participate in hiring and onboarding.
• Ensure that the team maintains reliable production and internal infrastructure, including monitoring, logging, backups, and disaster recovery.
• Define and maintain infrastructure security practices, including access management, system hardening, and patching.
• Oversee the timely handling of infrastructure incidents, escalations, and internal support requests.
• Plan and deliver infrastructure improvements, migrations, and capacity expansion.
• Operate and improve internal engineering services, and automate routine operations using Bash and Ansible.
• Coordinate infrastructure work with project teams and the DevOps team.

What we are looking for:

• Experience managing a system administration or infrastructure team, including performance management and work prioritization.
• Strong technical leadership and senior-level hands-on Linux administration skills, preferably with RHEL, CentOS, or AlmaLinux.
• Strong knowledge of networking and production troubleshooting.
• Strong Bash and Ansible skills.
• Experience administering PostgreSQL in production.
• Experience operating and securing production infrastructure, including monitoring, backups, access management, patching, and incident response.
• Ability to take ownership, make technical decisions, and communicate clearly within a distributed team.

Our technology landscape. We do not expect candidates to have experience with every technology listed below. Experience with several of these areas will be an advantage.

• Cloud and hosting: AWS, Tencent Cloud, and dedicated servers hosted at OVH and Hetzner.
• Virtualization, containers, and storage: Proxmox VE, Proxmox Backup Server, Docker, and ZFS.
• Databases: PostgreSQL, ClickHouse, and a small number of MySQL services.
• Monitoring and logging: Zabbix, Grafana, Percona Monitoring and Management, Graylog, and Elasticsearch.
• Identity and access: Keycloak, OpenZiti, and Google Workspace.
• Content delivery: Akamai and other CDN providers.
• Engineering services: TeamCity, GitLab, Perforce, Jira, and Confluence.
• Application environments: primarily Java-based game backends, plus some Python and PHP services.