Nair Systems, is a QFC based, boutique leading edge technology consulting and professional services firm focusing on Digital Banking, Artificial Intelligence, Big Data & Data Analytics, Cyber Security, Blockchain and Cryptocurrency and Robotic Process Automation.
Nair Systems is currently looking Senior Exchange / Microsoft 365 Consultant for our Qatar operations.
Experience & Qualifications
• 8+ years of hands on experience in Exchange and enterprise messaging platforms.
• Strong experience working in large enterprise or regulated environments (banking, financial services, healthcare, government preferred).
Microsoft certifications (preferred but not mandatory):
• Microsoft 365 Messaging
• Security, Compliance, and Identity certifications
Required Skills & Expertise
Technical Skills (Must Have)
• Expert level knowledge of:
• Exchange Server (2016/2019)
• Exchange Online and Hybrid deployments
• Microsoft 365 messaging security stack:
• Defender for Office 365
• Purview (DLP, Retention, eDiscovery)
• Conditional Access
• Strong understanding of:
• AD, Entra ID, DNS, certificates
• Mail flow, transport rules, connectors
• Advanced PowerShell scripting and automation capabilities
Security & Access Control
• Strong understanding of access control, RBAC, least privilege models
• Ability to translate security requirements into enforceable technical controls
• Experience supporting audits, security reviews, and compliance assessments
Communication & Stakeholder Management
• Strong communication skills with the ability to explain complex technical concepts to Security teams, CISO, management, and auditors.
• Proven experience producing:
• Technical designs and architecture documents
• Security justifications and risk assessments
• Executive level summaries and reports
• Comfortable leading discussions, workshops, and escalation calls with internal teams and vendors.
Key Responsibilities
Exchange & Messaging Architecture
• Design, implement, and support Exchange On Premises, Exchange Online, Hybrid Exchange, and Exchange Edge Transport architectures.
• Lead and execute Exchange migrations (On Prem → Hybrid → Exchange Online), including coexistence and decommissioning activities.
• Optimize mail flow, routing, transport rules, connectors, and external integrations.
• Troubleshoot and resolve complex Exchange, mail flow, and client access issues across hybrid environments.
Microsoft 365 & Outlook Client Expertise
• Provide advanced support for Outlook (Windows, Mac), OWA, and mobile client issues, including Autodiscover, profile corruption, authentication, and performance issues.
• Deep understanding of Modern Authentication, OAuth, and protocol behavior (SMTP, MAPI, EWS, ActiveSync).
Security, Compliance & Governance
Design and manage Microsoft Defender for Office 365 (Mail Defender) policies including:
• Anti spam
• Anti malware
• Anti phishing
• Safe Links and Safe Attachments
• Implement and manage Microsoft Purview solutions:
o Retention & Deletion policies
o Sensitivity labels
o Data Loss Prevention (DLP)
o eDiscovery (Standard & Premium)
• Enforce Conditional Access policies for secure access to Exchange Online and Microsoft 365 services.
• Collaborate closely with the Security Team and CISO to align messaging platforms with corporate cybersecurity strategy, regulatory requirements, and audit expectations.
Identity, Access & Infrastructure
• Strong expertise in Active Directory (AD), Azure AD / Entra ID, identity synchronization, and access control models.
• Deep working knowledge of DNS, certificates, network security, TLS, and proxy based integrations.
• Support and integrate messaging solutions with proxy, gateway, and security appliances (email gateways, CAS proxy, inspection devices).
Automation, PowerShell & Operations
• Advanced use of Exchange Online PowerShell and on prem Exchange Management Shell.
• Develop scripts for:
Mailbox lifecycle management
Reporting and auditing
Bulk operations and migrations
Security and compliance enforcement
• Drive automation and operational efficiency through scripting and orchestration.
Joining time frame: 2 weeks (maximum 1 month)
Should you be interested in this opportunity, please send your latest resume in MS Word format at the earliest at sheena.riju@nairsystems.com