Salary: £48,000 - 54,000 per year Requirements: Strong experience with Exchange (on-prem and Online) and M365 Proficient in Proofpoint, MS Defender/EOP, DKIM/SPF/DMARC Expertise in anti-phishing and spoof protection Experience with Intune and Azure/AVD Knowledge of AWS Ability to participate in a one-stage MS Teams interview Responsibilities: Deliver Exchange & M365 hybrid-cloud migrations Implement and manage email security using Proofpoint, Defender/EOP, DKIM/SPF/DMARC Lead anti-phishing, spoof intelligence, and ZAP remediation efforts Administer Intune and support Azure/AVD as well as AWS integrations Investigate and remediate email security incidents Technologies: AWS Azure Cloud Support MS Teams Security DevOps More: We are a long-standing enterprise customer based in Southwest London seeking a skilled Senior Infrastructure/Exchange Engineer for a hands-on contract role. Offering a competitive daily rate of £400-£450, this position requires working onsite 5 days a week, with immediate start preferred for a contract duration of 3 to 6 months. You will join our dedicated team, focusing on Exchange, M365, hybrid-cloud initiatives, and enhancing email security against phishing and spoofing threats. last updated 5 week of 2026