IT Systems Administrator

About […] […] is a global cybersecurity company that provides penetration testing and offensive security services. Our IT function is growing quickly, and we are looking for a Systems Administrator to own and mature our internal IT environment. Role Overview You will be responsible for administering, securing and governing […]’s internal systems.

You will learn our environment end to end, define how it should be run, and turn that into clear policies, standards and automation. This role suits someone who enjoys ownership, learns new platforms quickly and likes building structure where it is needed. Key

• Systems Administration • Administer Microsoft 365 and Entra ID: users, groups, licensing, Exchange Online, SharePoint, Teams and OneDrive. • Manage single sign-on (SSO) and user provisioning (SAML, OIDC, SCIM) for business applications such as GitLab, Atlassian, VPN and cloud platforms. • Support identity and access administration in Google Cloud, Azure and AWS. • Manage endpoints and the IT asset inventory, including device standardisation and enrolment. • Monitor Microsoft 365 service health, alerts and usage reports. 2. Email & Collaboration • Configure and troubleshoot Outlook (desktop, web and mobile), shared mailboxes, calendar sync and mailbox migrations. • Manage Exchange Online mail flow rules, spam filtering and email security policies. 3. Onboarding & Offboarding • Run the full joiner/mover/leaver process: accounts, licences,