Senior Systems Administrator

We are supporting a growing technology organisation seeking a Senior Systems Administrator to manage and scale its internal IT and network infrastructure. This role is hands-on and varied, combining day-to-day IT support with longer-term systems, security, and automation initiatives. You will work closely with internal teams to ensure reliable, secure, and efficient technology operations across the business. Responsibilities Administer Microsoft 365 including user accounts, permissions, licensing, and security configurations Provision, image, deploy, and maintain laptops and other hardware across their lifecycle Build, maintain, and troubleshoot corporate networks, servers, virtualization platforms, and cloud services Monitor alerts and logs, respond to incidents, and maintain backup and recovery processes Diagnose system outages, performance issues, and infrastructure bottlenecks Manage access provisioning across SaaS platforms and on-prem environments Coordinate with third-party vendors for hardware, software, and networking services Support IT and DevOps-related projects through to delivery Requirements Proven experience as a Systems Administrator, Network Administrator, or IT Support Specialist Solid understanding of networking, VPNs, firewalls, and virtualization Experience with device imaging and deployment Strong troubleshooting and problem-solving skills Clear communication skills and a service-focused mindset Current CCNA or RHCE certification Current IAT II compliant certification Automation or DevOps tooling such as Ansible, Packer, Python, or Bash Linux and Windows server administration Security monitoring and incident response Familiarity with CMMC and NIST 800-171 compliance frameworks Additional certifications such as Security+, Microsoft, AWS, or Azure #J-18808-Ljbffr