OverviewGreatLab Warrington, England, United KingdomWe are looking for a DevOps Engineer to manage and secure our in-house infrastructure, automate deployments, and optimise our CI/CD pipeline. You will be responsible for server management, security enforcement, networking, and infrastructure automation. Responsibilities

Server & Infrastructure Management Manage and maintain Linux-based servers (Ubuntu, Debian, CentOS). Deploy and monitor on-premises servers, networking, and power systems. Implement high availability (HA) and failover strategies for critical services. Optimize server performance, storage, and backups. Maintain and scale a hybrid cloud setup (AWS, on-prem, and private cloud infrastructure).

CI/CD & Code Deployment Automation Build and maintain CI/CD pipelines using GitHub Actions, GitLab CI/CD, or Jenkins. Automate software deployments for web applications and internal tools.

Security & Compliance Set up firewalls, access controls, and server hardening. Enforce SSH key-based authentication & disable root login. Implement intrusion detection (Snort, Suricata) & fail2ban for SSH security. Monitor system logs for suspicious activity and conduct regular security audits. Manage encrypted storage, VPN access (WireGuard/Tailscale), and private Git hosting. Authentication management w/ ensuring 2FA & other security improvement opportunities

Networking & Office IT Security Configure VLANs to separate office traffic from DevOps infrastructure. Server setup basics required & will have consulting advice Set up Wi-Fi segmentation (secure internal network vs. general office Wi-Fi). Implement real-time power monitoring (Smart PDUs, Energy Meter at the breaker panel).

Monitoring, Backups & Disaster Recovery Set up monitoring for servers and the network. Implement automated alerts (Slack, email) for CPU spikes, outages, and security threats. Maintain regular backups (AWS S3, on-prem NAS, offsite redundancy). Plan and test disaster recovery scenarios to minimise downtime.

What You’ll Need (Requirements)

1+ years of experience in DevOps, Infrastructure, or System Administration. 1+ years Commercial AWS experience Strong experience with Linux (Ubuntu, Debian, CentOS) server management. Experience with CI/CD tools (GitHub Actions, GitLab CI, Jenkins, or similar). Knowledge of networking (firewalls, VLANs, VPNs, BGP, routing). Familiarity with security best practices (SSH hardening, IDS/IPS, access control). Experience managing Docker, Kubernetes, or containerized environments. Comfortable managing physical hardware (rack-mounted servers, PDUs, UPS systems). Understanding of database administration (PostgreSQL, MySQL, or MongoDB). Experience with monitoring/logging tools (Grafana, Prometheus, ELK stack).

Nice to Have (Preferred Skills)

Experience working with Hybrid Cloud (AWS, Proxmox, OpenStack, etc.). Hands-on experience with hardware setup & data center operations. Knowledge of DDoS protection, reverse proxies (Cloudflare, HAProxy, Traefik). Experience with energy monitoring & infrastructure scaling.

What We Offer

A chance to build and manage an on-prem infrastructure from scratch. The opportunity to own security, networking, and server automation. A hands-on role in scaling our infrastructure and hybrid cloud setup. Work with a team that values security, automation, and fast deployments. Competitive salary and the chance to grow with the company. Location: Warrington, UK Full-time https://www.greatlab.io/

#J-18808-Ljbffr