Cloud Infrastructure & Security Engineer

Sai Kumar

(***) ***- **** ************@*****.***

PROFESSIONAL SUMMARY

Senior Microsoft 365 & Cloud Infrastructure Engineer with 5+ years of experience architecting, securing, and optimizing enterprise hybrid environments. Expertise in Microsoft 365 (Exchange Online, Teams, SharePoint, OneDrive), Azure AD (Entra ID), Intune, and enterprise SaaS identity lifecycle governance. Proven track record in cloud modernization, zero-trust security architecture, automation, cost optimization, and executive-level white-glove support. Recognized for driving operational excellence, reducing security risk, improving service reliability, and delivering measurable business impact across global IT and Security organizations. SKILLS

Cloud Platforms : Azure Active Directory (Entra ID), Azure Virtual Desktop, Azure Resource Manager, Azure Monitor Collaboration Tools : Microsoft Teams, SharePoint Online, OneDrive, Exchange Online, Microsoft 365 Apps On-Prem : SharePoint (2013/2016/2019), Exchange (2010/2013/2016) Automation & Scripting : PowerShell (Advanced), Microsoft Graph API, Power Automate, Power Apps, Power BI Security & Compliance : Microsoft Purview, Conditional Access, MFA, DLP, IAM, RBAC, SSO, PIM, Microsoft Defender Enterprise Management: Microsoft Intune, Autopilot, MDM, SCCM Operating Systems : Windows Server, Windows 10/11, macOS Other Tools : ServiceNow, Jira, ShareGate, Qualys, Veeam, Okta, Google Workspace, Slack, Zoom EDUCATION

Master's in Information Technology from Southern New Hampshire University PROFESSIONAL EXPERIENCE

LTI Mindtree, Boston, MA Sep 2024 - Present

Sr Cloud and Operations Engineer

Responsibilities:

Own and manage enterprise Microsoft 365 hybrid environment, leading modernization and migration initiatives across Exchange, SharePoint, and Teams.

Architect tenant – level security baseline integrating Conditional Access, RBAC, PIM, and Zero Trust principles.

Implement Intune & Autopilot compliance strategy securing 500+ endpoints with encryption, device control, and app protection policies.

Deliver executive-level white-glove support ensuring zero-disruption operations during high-visibility leadership engagements.

Lead mailbox migrations (Exchange 2010/2013 Exchange Online) with zero data loss and minimal downtime.

Develop advanced PowerShell automation scripts leveraging Microsoft Graph API to proactively monitor and remediate service health issues.

Administer Saas ecosystem (Okta, Google Workspace, Slack, Zoom, Jira) managing identity lifecycle automation and access governance.

Optimize Microsoft 365 licensing portfolio reducing annual operational spend by $20K+.

Conduct eDiscovery and compliance investigations using Microsoft Purview supporting Legal and HR initiatives.

Design and validate Disaster Recovery and Business Continuity strategies with semi-annual failover testing.

Build executive dashboards using Azure Monitor and Power BI to track service health, adoption, and operational KPIs.

Author technical documentation and governance frameworks improving cross-team operational maturity. United Health Group, Hooksett, NH Oct 2022 – Aug 2024 Sr Cloud /IT Engineer

Responsibilities:

Led Microsoft 365 administration (Exchange Online, Teams, SharePoint, OneDrive) supporting 5,000+ global users.

Designed secure identity architecture using Azure AD (Entra ID), implementing MFA, SSO, Conditional Access & RBAC, reducing identity incidents by 40%.

Directed SharePoint 2013 SharePoint Online migration including workflows and mission-critical data.

Built Power Platform automation solutions reducing manual operational effort by 40%.

Implemented Microsoft Teams Voice (Auto Attendants, Call Queues, Direct Routing), improving reliability by 30%.

Managed enterprise endpoint security strategy using Intune, enforcing compliance and conditional access policies.

Reduced critical vulnerabilities by 60% through proactive remediation leveraging Microsoft Defender and Qualys.

Designed and maintained Microsoft 365 backup and recovery strategy using Veeam ensuring defined RTO/RPO compliance.

Improved ServiceNow SLA adherence by 30% through process optimization and automation workflows.

Established SharePoint and Teams governance standards improving collaboration security and adoption. Nokia, Westford, MA June 2020 – Sep 2022

Cloud Engineer

Responsibilities:

Administered Azure infrastructure including VMs, networking, storage, and AKS clusters supporting scalable cloud environments.

Implemented AWS IAM and VPC security best practices improving cloud security posture.

Designed CI/CD pipelines using Jenkins and Azure DevOps accelerating deployment cycles.

Managed VMware & Hyper-V virtualization platforms optimizing resource utilization.

Strengthened identity governance through RBAC, MFA, and Azure AD policy enforcement.

Led enterprise patch management using SCCM improving compliance and vulnerability reduction.

Supported MySQL, MS SQL, and Oracle databases ensuring high availability and performance.

Contributed to disaster recovery architecture and high availability configurations.

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