C2
MICROSOFT 365 PLATFORM ARCHITECT
Open To Work
MAYANK SINGH
Altimetrik India
Gurugram,Haryana
Overview
M365 Platform Architect & Cloud Operations Lead with 10+ years of experience delivering enterprise messaging, collaboration, identity, security, compliance, automation, and infrastructure services. Deep expertise in Exchange Online and Hybrid, Microsoft Entra ID, IAM, Microsoft Defender for Office 365, Microsoft Purview, PowerShell, Microsoft Graph, Teams, SharePoint Online, OneDrive, and Microsoft 365 Copilot. Proven record of resolving complex L3 incidents, automating administration, strengthening security controls, supporting service transitions, and delivering measurable outcomes in global enterprise environments.
10+
Years of experience
06+
Certification
02+
Languages
Work History
07.2025 - Current1 Year 3 Months
Staff Engineer - Product and Platform Engineering
Altimetrik India
- Engineered Microsoft 365 cloud operations, security governance, and infrastructure support for Lululemon and APEI across Exchange Online, Entra ID, Teams, SharePoint Online, OneDrive, Defender, and Purview.
- Assessed Microsoft 365 controls against CIS-aligned and enterprise requirements covering messaging security, authentication, privileged access, mailbox auditing, external forwarding, guest access, collaboration, and unmanaged devices.
- Transformed technical findings into clear control status, business impact, dependencies, exceptions, risks, remediation actions, ownership, and implementation-ready documentation.
- Authored runbooks, SOPs, remediation plans, governance records, issue trackers, and knowledge-transfer material that strengthened service continuity and transition readiness.
- Executed APEI infrastructure operations and ramp-down transition planning, earning positive feedback for technical capability, delivery quality, and operational support.
05.2019 - 04.20255 Years 11 Months
Microsoft 365 & Exchange Online Engineer
Concentrix India
- Delivered enterprise L3 engineering across Microsoft 365, Exchange Online and Hybrid, Microsoft Entra ID, identity services, collaboration workloads, service health, mail flow, licensing, and complex escalations.
- Led Exchange Online migration and hybrid coexistence initiatives for 2,000+ users, covering mail flow, DNS, shared resources, Azure AD Connect, federation, coexistence, and end-user readiness.
- Executed SharePoint Online migration using ShareGate, including pre-migration assessment, content and permission validation, issue resolution, and post-migration verification.
- Built 25+ PowerShell and Microsoft Graph solutions for provisioning, licensing, reporting, monitoring, and compliance validation, reducing recurring manual effort by approximately 40%.
- Implemented and resolved issues across Microsoft Defender for Office 365, Exchange Online Protection, DLP, eDiscovery, retention, litigation hold, audit, SPF, DKIM, and DMARC controls.
- Maintained 95%+ customer satisfaction through structured incident ownership and stakeholder communication while enabling 100+ technical professionals on Microsoft 365 Copilot and prompt engineering.
02.2018 - 11.20189 Months
Senior Technical Support Engineer
Global Virtual ITES
- Provided Tier-3 support for Windows Server, Active Directory, DNS, DHCP, identity, availability, and connectivity; improved resolution time by 25% through RCA, SOPs, and targeted automation.
- Diagnosed and resolved 100+ monthly escalations involving Active Directory, Windows Server 2008-2016, DNS, DHCP, identity, availability, and network connectivity across client environments.
12.2016 - 01.20181 Year 1 Month
Technical Support Executive
Tech Live Connect
- Delivered remote L2/L3 support across Windows, macOS, Office 365, applications, endpoints, and connectivity while sustaining 98%+ SLA adherence.
- Resolved 150+ monthly support cases for international users and improved escalation quality through precise diagnostics, case documentation, and collaboration with L3 teams.
Education
B.Tech | Electrical Engineering
Galgotias College of Engineering and Technology | 01.2015
Galgotias College of Engineering and Technology
01.2015
Skills
Certification
- Microsoft Certified Solutions Expert (MCSE)
- MS-100: Microsoft 365 Identity and Services
- MS-101: Microsoft 365 Mobility and Security
- 70-410: Installing and Configuring Windows Server 2012
- AZ-900: Microsoft Azure Fundamentals
- MS-4006-A: Microsoft 365 Copilot for Administrators
Accomplishments
- Orchestrated Exchange Online migration and hybrid infrastructure modernization for 2,000+ enterprise users while enforcing rigorous Zero Trust messaging security (SPF, DKIM, DMARC).
- Transformed M365 provisioning and compliance workflows by engineering custom automation, eliminating 40% of recurring administrative effort.
- Accelerated global incident resolution efficiency by 25% through advanced root-cause analysis and automation strategies.
- Secured and sustained 95%+ customer satisfaction while managing complex Tier-3 identity and messaging escalations.
- Spearheaded enterprise AI enablement initiatives, coaching 100+ technical professionals on safe Microsoft 365 Copilot adoption and advanced prompt engineering.
- Earned formal recognition from Lululemon, APEI, and Altimetrik leadership for M365 technical expertise, operational excellence, and dedicated support across global geographies.
Projects
- Lululemon: M365 Security & Governance Assessment Aug 2025 - Aug 2026, Executed a comprehensive CIS-aligned security assessment across the M365 tenant, delivering a prioritized remediation roadmap for messaging, identity, and collaboration workloads., Hardened the enterprise perimeter by auditing and refining Zero Trust policies, guest access controls, and unmanaged device compliance.
- APEI: Microsoft 365 Infrastructure Transition & Service Ramp-Down Aug 2026 - Nov 2026, Orchestrated the seamless transition of enterprise M365 operations, establishing comprehensive runbooks and governance documentation for the incoming delivery team., Mitigated operational risks during the ramp-down phase by aligning cross-functional stakeholders on platform dependencies and access management.
- Concentrix: Enterprise Automation & Escalation Management 2019 - 2025, Architected a custom PowerShell and Graph API automation framework that standardized global user provisioning and automated complex compliance reporting., Served as the definitive escalation authority for global Tier-3 messaging and identity incidents, safeguarding platform reliability for global enterprise users.
Timeline
Staff Engineer - Product and Platform Engineering
Altimetrik India
07.2025 - CurrentRead more
Microsoft 365 & Exchange Online Engineer
Concentrix India
05.2019 - 04.2025Read more
Senior Technical Support Engineer
Global Virtual ITES
02.2018 - 11.2018Read more
Technical Support Executive
Tech Live Connect
12.2016 - 01.2018Read more
Galgotias College of Engineering and Technology - B.Tech, Electrical Engineering
Read more
Work Preference
Interests
Travel
Filmmaking
Script Writing
Books Reading
Movies
Cricket
Languages
English
Bilingual or Proficient
Hindi
C2
Bilingual or Proficient
“The world is full of magical things patiently waiting for our wits to grow sharper.”
Bertrand Russell