About Harris Harris is a leading provider of financial management and Customer Information Systems (CIS) software solutions serving Public Sector, Schools, Utilities, and Healthcare organizations across North America. Since 1976, Harris has built a reputation for delivering robust, feature-rich solutions and long-term customer partnerships. About the Role Our Corporate IT team seeking an experienced Office 365 Engineer, with a strong emphasis on Exchange, Teams and, Active Directory (AD)/identity management. This role is responsible for designing, implementing, and maintaining Exchange (on-premises and hybrid), Teams and, Azure AD (Microsoft Entra ID). Key
Responsibilities
Lead the design, configuration, and ongoing administration of Exchange Online within the Microsoft 365 tenant, including mailbox provisioning, shared/resource mailboxes, distribution groups, Tenant to Tenant migration projects. Architect and manage end-to-end mail flow including send/receive connectors, transport rules, smart host relay, third-party gateway integrations (e.g., Mimecast, Proofpoint), and DNS records (MX, SPF, DKIM, DMARC) Serve as the primary owner of Exchange Online Protection (EOP) and Microsoft Defender for Office 365, configuring and tuning anti-phishing, anti-spam, safe links, safe attachments, and protection policies Act as the Tier 3/4 escalation point for all email-related incidents including NDRs, mail flow failures, spoofing, BEC attacks, and malware delivery events, with full Root Cause Analysis (RCA) documentation Design, deploy, and maintain Microsoft 365 DLP policies across Exchange Online, Teams, SharePoint, and OneDrive in alignment with GDPR, and HIPAA requirements, tuning conditions and exceptions to minimize false positives Administer Microsoft Purview compliance solutions including retention policies, sensitivity labels, MRM, litigation holds, eDiscovery (Content Search and Premium), communication compliance, and insider risk management policies Manage email authentication posture by continuously validating and enforcing SPF, DKIM, and DMARC configurations, reviewing Microsoft Secure Score recommendations Develop and maintain PowerShell automation scripts for Exchange Online bulk operations, user lifecycle workflows (onboarding/offboarding), compliance reporting, and Microsoft Graph API integrations with ITSM or HRIS platforms Follow ITIL and change management best practices for all platform changes — including raising RFCs, participating in Change Advisory Board (CAB) reviews, maintaining incident/problem records, and producing post-implementation reviews (PIR) for major changes impacting Exchange, Teams, or voice environments Administer the Microsoft Teams — managing messaging, meeting, and app permission policies, Teams Rooms (MTR) devices, and providing Tier 2/3 escalation support for Teams incidents Administer the Entra ID - identity management using Azure AD connect, SSO technologies like SAML. Knowledge of Windows and Active Directory, TCP/IP, DHCP, DNS, etc. (Nice to Have) Administer RingCentral user provisioning and IVR..
Preferred Qualifications
Experience
with large-scale Exchange migrations and tenant consolidations Microsoft certifications (Exchange, Teams, Microsoft 365, or Azure)
Benefits
Harris offer an extremely competitive UK employee benefits programme. 5 Personal Days leave entitlement are granted over and above the standard 25 days holiday and bank holidays. Harris also offers all UK employees an annual Lifestyle Reward amounting £325 per annum/pro rata. Supporting your application Our recruitment process will comprise of interviews and, at times, a written exercise, an assessment day and/or a presentation. As an equal opportunities’ employer, we want to make sure we do all we can to make this a positive experience for you. If your application is progressed, please make us aware of any adjustments or additional support we can provide you with. At Harris, we believe great people build great software. We offer an environment where employees are empowered to make a real impact, grow their skills, and shape their careers. Our teams enjoy a supportive, award‑winning culture, a casual and collaborative workplace, and opportunities to learn from a diverse group of businesses and industries. We are financially strong and proudly part of Constellation Software Inc. (CSI), the largest software company in Canada, providing long‑term stability alongside entrepreneurial autonomy. In addition to a competitive compensation and benefits package, we offer meaningful perks, flexibility, and—most importantly—a culture that values people, curiosity, and having fun while doing great work. Follow us on LinkedIn to learn more about our culture, values, and career opportunities. Harris is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Applicants who require a reasonable accommodation due to a disability may contact us by email at HarrisTalentAcquisition@harriscomputer.com. Accommodation requests may be made at any time. This email address is dedicated solely to accommodation requests and cannot be used to inquire about application status. Know Your Rights Poster EO 13496: Notification of Employee Rights under Federal Labor Laws Our commitment to fair and equitable hiring. As part of our recruitment process, we use artificial intelligence (AI) tools during the initial screening phase to help identify candidates whose qualifications most closely align with the requirements of the role. This technology supports efficiency and consistency in the early stages, but it never replaces human judgement. All subsequent evaluations and final hiring decisions are made by our recruitment professionals. AI does not make final hiring decisions.