Salary: £55,000 - 60,000 per year Requirements: Strong Windows Server administration experience, including IIS, Failover Clustering, and Microsoft NLB Experience supporting Microsoft Entra ID and Microsoft 365 technologies, including Exchange Online, Intune, Defender, and Teams Experience supporting cloud and edge infrastructure technologies, including AWS and Cloudflare (WAF, CDN, DNS) Strong troubleshooting and root cause analysis skills within complex production environments Experience supporting highly available, customer-facing platforms Ability to work remotely with 1 day per month in Oxford Willingness to participate in a shared 24/7 on-call rota (approximately 1 week in every 6) Linux systems administration experience is desirable Exposure to infrastructure security and hardening best practices is desirable Experience working within fast-paced operational or online platform environments is desirable Responsibilities: Support and improve Microsoft-based infrastructure and cloud platforms Handle monitoring, troubleshooting, patching, maintenance, and infrastructure change activities across critical production systems Collaborate closely with internal teams to keep services secure, stable, and highly available across on-premise and cloud environments Technologies: AWS Cloud Support Linux Microsoft 365 Security WAF Windows Office 365 More: We are a growing technology company supporting large-scale online platforms used globally. This is a remote role with 1 day per month in Oxford, and we offer a salary of circa £55,000 to £60,000 plus bonus and benefits. We provide a stable, friendly environment with plenty of scope for progression, where you will work with modern infrastructure technologies while maintaining a healthy work/life balance. last updated 24 week of 2026