Exchange Online / Microsoft 365 Administrator IT Infrastructure · Remote (US time zones) · Full-time

CYFR Technology

Remote job

Exchange Online / Microsoft 365 Administrator Full-time We manage a hybrid Exchange environment connecting on-prem Exchange 2019 to Exchange Online, with 1,200+ mailboxes in a multi-domain tenant spanning three verified domains, multiple email address policies, and complex transport rules. We need someone who knows exactly which cmdlet to reach for when a user reports their calendar delegate stopped working. Responsibilities

Manage Exchange Online Protection, Defender for Office 365, anti-phish policies, safe links/safe attachments
Own transport rule management: DLP policy templates, S/MIME enforcement, disclaimer rules, journaling to third-party archive
Administer Exchange Online PowerShell: mailbox management, RBAC role groups, mailbox folder permissions, audit logging
Manage Teams admin center: voice routing, calling policies, auto attendants, call queues
Administer Microsoft 365 Groups, shared mailboxes, resource mailboxes, and Public Folder coexistence
Write automation scripts for user provisioning and license management using MS Graph PowerShell SDK

Requirements

5+ years of Exchange administration (on-prem, hybrid, and EXO)
Expert-level Exchange PowerShell — you can write a script to find every mailbox with a broken delegate permission in one pipeline
Experience with hybrid migration from Exchange 2016/2019 to Exchange Online
Understanding of SMTP, DKIM, DMARC, SPF, and mail flow troubleshooting
Knowledge of Defender for Office 365 — Threat Explorer, automated investigation, attack simulation
Comfortable with Microsoft Graph API and MS Graph PowerShell for cross-workload automation

Nice to Have

MS-203 or MS-220 certification
Experience with compliance features: eDiscovery (Standard and Premium), retention policies, communication compliance
Knowledge of third-party email security gateways (Mimecast, Proofpoint)
Familiarity with Active Directory attributes that drive Exchange: proxyAddresses, mailNickname, legacyExchangeDN

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Vacancy posted 1 day ago

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