Team Lead, System Administrator

Responsibilities

• Lead, coordinate, and coach a team of Systems Administrators, ensuring consistent output quality and adherence to SOPs
• Manage team workload, prioritise tasks across competing demands, and ensure SLA compliance across all infrastructure functions
• Conduct regular 1:1s, deliver direct and specific performance feedback, and actively develop team members' technical skills
• Design and enforce team workflows and escalation paths, ensuring quality is consistent regardless of who executes the task
• Own team-level metrics: system uptime (99.9%+), ticket SLAs, incident response times, and end-user satisfaction
• Identify gaps in team capability or process and proactively close them through training, tooling, or workflow redesign
• Design, implement, and maintain a robust IT infrastructure, including servers and virtualisation platforms (Proxmox)
• Administer and optimise Windows Server, Linux systems, and hybrid cloud infrastructures
• Maintain comprehensive system documentation, network diagrams, and Standard Operating Procedures (SOPs)
• Plan and execute system upgrades with minimal downtime; optimise for performance, reliability, and cost efficiency
• Design, deploy, and manage cloud network environments across GCP, OCI, and Azure, Outpost, including VPCs, subnets, peering, firewall rules, and private connectivity
• Administer and optimise BGP routing policies, virtual routers (vRTF), and F5 load balancers across the enterprise network and cloud environments
• Configure, manage, and troubleshoot enterprise networking infrastructure (routers, switches, firewalls, wireless access points)
• Implement and maintain network security protocols, VLANs, VPNs, and network segmentation across on-premise and cloud environments
• Manage DNS, DHCP, Directory as a Service, and other core network services
• Monitor network performance, analyse bandwidth utilisation, and implement QoS policies
• Manage, maintain, and evaluate AI tools used across the IT and infrastructure function, ensuring reliability, access control, and appropriate use
• Build and maintain automation workflows using n8n and similar platforms to optimise repetitive operational processes
• Design and implement AI-assisted workflows for network deployment, incident triage, and infrastructure monitoring
• Coach team members on responsible AI integration, when to use AI tools, how to validate outputs, and where human review is required
• Identify opportunities to reduce manual toil through intelligent automation and continuously improve the team's automation capabilities
• Administer and maintain the xCALLY PBX platform, including call routing, IVR configuration, queue management, and agent provisioning
• Troubleshoot telephony incidents end-to-end: SIP trunks, PBX dial plans, voice quality, and carrier integration
• Coordinate with ISPs and telecom carriers to ensure uptime and quality of voice services across all sites
• Develop and maintain automation scripts (Python, PowerShell, Bash) to eliminate repetitive tasks and improve operational efficiency
• Utilise Infrastructure as Code tools (Terraform, Ansible) for consistent and scalable infrastructure deployment
• Build and maintain monitoring and alerting solutions using Prometheus, Grafana, and Nagios
• Document automation and tooling clearly enough for an Associate-level team member to execute independently
• Implement and enforce IT security policies, access controls, and data protection measures across on-premise and cloud environments
• Manage endpoint security solutions, patch management, and privileged access management
• Manage user authentication systems, including SSO, MFA, and identity governance
• Lead incident response: manage security events, conduct Root Cause Analyses (RCA), and implement permanent fixes
• Oversee onboarding and offboarding procedures, ensuring seamless first-day experiences and complete account lifecycle management
• Administer Google Workspace, including user provisioning, group management, Drive policies, and app integrations
• Manage MDM solutions for corporate devices across Windows, macOS, iOS, and Android
• Provide or oversee expert-level L2/L3 support, ensuring timely resolution and minimal user disruption
• Manage IT asset inventory, lifecycle, and procurement coordination

Requirements

• Bachelor's degree or diploma in Computer Science, Information Technology, Engineering, or a related field
• 5+ years of proven experience in systems administration, infrastructure, or network engineering roles
• At least 2 years of formal or informal team leadership, including coaching, delegation, and performance feedback
• Advanced proficiency in Active Directory / Directory as a Service (e.g., JumpCloud); Linux/Unix administration (RHEL, CentOS, Ubuntu, Debian)
• Cloud networking expertise across GCP, OCI, and Azure: VPCs, subnets, load balancers, private service connect, VPN gateways, and cloud firewall management
• Deep understanding of TCP/IP, BGP routing protocols, switching, VLANs, and enterprise network architecture across data centre and WAN environments
• Hands-on experience with virtual routers (vRTF), F5 load balancers, and enterprise networking equipment (Cisco, Ubiquiti)
• Virtualisation experience with Proxmox; data centre operations including rack and stack, power, cooling, and structured cabling
• Experience administering xCALLY PBX or equivalent enterprise telephony/unified communications platforms
• Proficiency in scripting: Python, PowerShell, Bash; experience with Ansible and Terraform
• Hands-on experience with n8n or equivalent workflow automation platforms for building and managing operational automations
• Experience managing AI tools within an IT environment, including access control, integration, and responsible use governance
• Experience with monitoring tools (Grafana, Prometheus, Nagios, PRTG) and endpoint/MDM management platforms
• Proficiency in Google Workspace administration: user and group management, Drive, Gmail, Meet, and third-party app integrations
• Advanced infosec tooling experience (e.g., CrowdStrike); knowledge of Disaster Recovery protocols and DR drills
• Experience with Jira Service Management; understanding of SLIs, SLOs, and SLAs
• Proven ability to lead a technical team: delegate effectively, deliver feedback, and develop others
• Exceptional analytical and systematic troubleshooting approach; moves fast without compromising rigour
• Strong documentation discipline — produces SOPs and runbooks clear enough for junior team members to execute
• Candid communicator: surfaces risks early, documents dissent, and challenges direction constructively
• Customer-obsessed: identifies and permanently resolves recurring pain points, not just individual tickets
• This role may require occasional weekend or after-hours work to perform system maintenance, upgrades, and respond to critical incidents
• Physical requirements may include lifting equipment up to 50 lbs

Benefits

• Culture: We put our people first and prioritize the well-being of every team member. We've built a company where all opinions carry weight and where all voices are heard. We value and respect each other and always look out for one another. Above all, we are human.
• Learning: We have a learning and development-focused environment with an emphasis on knowledge sharing, training, and regular internal technical talks
• Compensation: You'll receive an attractive salary, pension, and health insurance