Senior Cloud Systems Administrator

Role Overview

We are looking for an experienced Senior Cloud Systems Administrator to design, manage and support cloud and network infrastructure across multiple client environments.

The role will be responsible for the availability, security and performance of cloud and network systems, ensuring SLA compliance and acting as a senior technical escalation point for internal teams and clients.

Key Responsibilities

• Design, deploy and manage cloud infrastructure across AWS, Azure and/or GCP, including compute, storage, networking, identity and security.

• Administer network infrastructure including TCP/IP, VLANs, subnetting, BGP, OSPF, VPNs, firewalls and routing.

• Manage hybrid cloud connectivity, including site-to-site VPN, Direct Connect and ExpressRoute.

• Automate infrastructure provisioning using Terraform, CloudFormation, ARM templates and/or Ansible.

• Implement and maintain IAM and Privileged Access Management (PAM) controls.

• Monitor infrastructure availability, capacity and performance and resolve incidents within agreed SLAs.

• Manage backup, disaster recovery and business continuity processes.

• Support cloud security and compliance requirements, including ISO 27001, SOC 2 and PCI-DSS.

• Optimise cloud infrastructure performance and costs.

• Support CI/CD, Docker and Kubernetes environments.

• Participate in client onboarding, infrastructure assessments and cloud migration projects.

• Manage incidents and requests through PSA/RMM/ITSM platforms such as ConnectWise, Autotask, Kaseya or ServiceNow.

• Maintain technical documentation, network diagrams and runbooks.

• Communicate directly with clients and act as a technical escalation point.

• Mentor junior administrators and participate in on-call support when required.

Required Qualifications & Experience

• Bachelor's degree in Computer Science, IT or a related discipline, or equivalent experience.

• 7+ years of experience in cloud infrastructure, systems administration or infrastructure engineering.

• Strong hands-on experience with AWS, Azure and/or GCP; multi-cloud experience is an advantage.

• CCNA certification or equivalent hands-on networking experience.

• Strong networking knowledge including TCP/IP, VLANs, subnetting/CIDR, NAT, VPNs, firewalls, OSPF and BGP.

• Experience with Infrastructure as Code (IaC) using Terraform, CloudFormation, ARM templates or Ansible.

• Experience with IAM and PAM solutions such as CyberArk, BeyondTrust or HashiCorp Vault.

• Scripting and automation skills using Python, Bash and/or PowerShell.

• Experience with Docker, Kubernetes, CI/CD and monitoring/observability tools.

• Experience working with PSA, RMM or ITSM/ticketing platforms.

• Strong troubleshooting skills and ability to manage multiple client environments and SLA priorities.

Preferred

• AWS, Azure or GCP professional certifications.

• CCNP or higher networking certification.

• Previous experience within an MSP, IT services or consulting environment.

• Experience with cloud migrations, regulated environments and cloud cost optimisation.

• Strong client-facing communication and mentoring skills.