Karthik Babu
Chennai
Summary
Customer-focused Microsoft 365 architect with 11+ years leading enterprise messaging, tenant migrations, and security policy design across Exchange Online, Azure/Entra ID, Defender for Office 365, and Intune. Specializing in secure-by-design M365 architectures, phishing defense, identity hardening (Conditional Access, MFA, PIM), and compliance enablement. Proven record delivering low-downtime migrations, automations, and measurable risk reduction for global environments.
Overview
12
12
years of professional experience
1
1
Certification
Work History
Associate Architect
Kryptos Technologies
Chennai
08.2022 - Current
- Led on-premises to Microsoft 365 migrations (Exchange Online, SharePoint Online, Teams, Intune), orchestrating hybrid coexistence, Autodiscover, and mailflow cutovers with near-zero downtime.
- Managed and upgraded Exchange 2010/2016 in mixed-hybrid mode; implemented Hybrid Configuration Wizard and coexistence patterns for staged migrations.
- Managed Azure AD Connect; standardized identity lifecycle and synchronized attributes for smooth user provisioning.
- Automated license assignment and user account creation using PowerShell/Graph, reducing manual effort and errors across provisioning workflows.
- Administered Proofpoint and Exchange Online Protection (EOP); tuned spam/phish policies, transport rules, and quarantine handling to reduce false negatives and improve detection quality.
- Implemented and maintained security, compliance, and Conditional Access requirements including MFA baselines, risk-based access, break-glass accounts, and privileged admin controls.
- Deployed Intune and managed MDM/MAM; enforced device compliance and app protection policies aligned to company security standards.
- Created presentations and delivered findings, recommendations, and reports for technical and non-technical stakeholders; drove consensus for security and migration plans.
- Set up Microsoft 365 service frameworks and knowledge for support teams to operate projects within scope and SLAs.
Technical Messaging Consultant
Tata Consultancy Services
Chennai
01.2021 - 07.2022
Senior Messaging Infrastructure Engineer
Fujitsu Consulting India Pvt Ltd
Chennai
08.2019 - 01.2021
Systems Engineer
CSS Corp
Chennai
10.2013 - 08.2018
- Plan and implement AD FS and WAP infrastructure for federated identity.
Messaging Infrastructure Engineer
CBTS Technology Solutions India LLP
Chennai
Education
Bachelor of Engineering - Computer Science
Anna University
Chennai, India01.2013
Skills
- Microsoft 365: Exchange Online, SharePoint Online, Teams, OneDrive, Tenant-to-Tenant Migrations
- Security: Defender for Office 365, Safe Links/Safe Attachments, Anti-Phish, DMARC/DKIM/SPF, TLS, Purview DLP, Sensitivity Labels, eDiscovery
- Identity: Entra ID (Azure AD), Conditional Access, MFA/Passwordless, PIM, Identity Protection, ADFS/WAP, Azure AD Connect/Cloud Sync
- Device & App: Intune MDM/MAM, Compliance Policies, App Protection, Windows Autopilot (if applicable)
- Email & SMTP: EOP/Proofpoint, transport rules, connectors, headers analysis, mail trace, authentication hardening
- Automation & Tools: PowerShell, Graph, KQL (M365 Defender Advanced Hunting), Quest migration tools
- Methods: Zero Trust, defense-in-depth, security baselines, change management, stakeholder communications, HLD/LLD documentation
Certification
- MCSA: Office 365, 2017
- AZ-500: Microsoft Azure Security Technologies, 2021
Languages
- English, Full Professional Proficiency
- Hindi, Professional Working Proficiency
- Tamil, Native or Bilingual Proficiency
Personal Information
Title: Associate Architect
Technical Competency
- Office 365 Migration (Exchange Online, SharePoint Online, Teams, Intune, Yammer)
- Discover, assess, plan and migrate Exchange mailboxes, NAS servers, Skype on-prem, Intune and Yammer to Office 365
- SharePoint site design, creation and permission delegation planning
- Teams mode migration and customizing policies with client requirement and assign Calling plans
- Security and Compliance policies standardization
- Write design documents (HLD & LLD) for migration projects
- Create and manage Intune MDM and MAM policies as per company policies
- Set up Hybrid Configuration Wizard for Exchange Server for migration
- Mail-flow, Autodiscover and free-busy planning and configuration
- Federation and Organization sharing setup between multiple Exchange / Office 365 organizations
Timeline
Associate Architect
Kryptos Technologies
08.2022 - Current
Technical Messaging Consultant
Tata Consultancy Services
01.2021 - 07.2022
Senior Messaging Infrastructure Engineer
Fujitsu Consulting India Pvt Ltd
08.2019 - 01.2021
Systems Engineer
CSS Corp
10.2013 - 08.2018
Messaging Infrastructure Engineer
CBTS Technology Solutions India LLP
Bachelor of Engineering - Computer Science
Anna University
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