Abinash R
Bengaluru
Summary
Tech Lead specializing in Active Directory, Office 365, and Exchange platforms with a focus on security and compliance. Proven expertise in Microsoft Teams Governance and Azure AD Management, resulting in significant security enhancements. Successfully led major upgrades and project implementations, improving system efficiency and security across various platforms.
Overview
7
7
years of professional experience
2
2
Certifications
Work History
Tech Lead
Cognizant Tech Solutions
chennai
01.2022 - Current
- 2022 Domain Controllers Upgrade.
- PKI Upgrade.
- Exchange SE upgrade.
- I worked on the MTR (Meeting Teams Rooms) project and managed MTR devices in Intune.
- Add inbound and outbound email support for the new domain in Exchange Online and Proofpoint.
- Microsoft Teams Governance - Allow only specific third-party applications in Teams.
- Microsoft Teams Governance - Allow only specific external domains in Teams.
- Set up the staging AD Connect or Entra ID Connect environment, and upgrade them using swing migration.
- Decommissioning the ADFS environment.
- Enforcing admin consent for Azure AD applications and governing admin consent requests for applications.
- Implemented modern authentication for Graph PowerShell using application registration with certificate or client secret-based authentication for scripting.
- Worked with several stakeholders to disable legacy authentication, such as IMAP, POP, EWS, etc., and migrated them to modern auth.
- Conducted an Azure subscription cleanup project to reduce costs.
- Migrating applications to OAuth 2.0 from legacy. • Managing the DNS environment, such as Men & Mice – Micetro DNS.
Analyst
HCL Tech
chennai
10.2018 - 01.2022
- Upgraded Exchange 2016 from CU 19 to CU 23, enhancing system stability.
- Azure AD Connect upgrade.
- Managing all aspects of Azure AD.
- Executed user account remediation and Office 365 license cleanup to optimize resource allocation.
- Managed MTR projects, improving overall operational efficiency.
- Renewed ADFS and proxy certificates, ensuring secure access protocols.
- Implemented Microsoft LAPS and created GPOs to strengthen security management.
- Supervised DNS, DHCP, PKI, ADFS, and FTP environments for reliable operations.
- Enhanced Exchange Online email security and compliance to protect data integrity.
- Administered Office 365 licenses to meet organizational requirements.
Education
Bachelor of Engineering - Mechanical Engineering
Dhanalakshmi Srinivasan College of Engg And Tech
Chennai07-2018
Skills
- Active Directory
- Office 365
- Azure AD or Entra ID
- Email security
- Microsoft Teams
- Intune
- Azure
- PowerShell
Technical Proficiencies
- Having over 6 years of experience in Active Directory, Office 365 administration, Exchange, and Azure AD.
- Highly skilled Active Directory and Office 365 administrator.
Extensive experience in managing AD scopes such as DNS, DHCP, PKI, ADFS, FTP, file and print, net app, etc. - Proficient in GPO, DNS, DHCP, ADFS, PKI, FTP, and other Windows Server technologies (2008, 2012, 2016, 2019, 2022).
- Knowledgeable in Office 365 scopes such as Teams, Skype, Hybrid Exchange, Exchange Online, Exchange on-prem, Security and Compliance, Azure AD, Endpoint Manager, Microsoft Defender, Proofpoint, etc.
- Exchange on-prem server management (2013, 2016, 2019, Exchange SE)
- Proficient in Azure Active Directory (Entra ID), Azure, and Azure services.
- Knowledgeable in Intune.
- Scripting on Active Directory PowerShell, Microsoft Graph, Exchange Online, Exchange on-prem, O365, Azure, and Teams PowerShell.
- Experienced in troubleshooting Outlook client, OWA, Skype, and Teams-related issues, as well as Windows 7 and 10-related issues.
- Experienced in Proofpoint email security and messaging, and knowledge in Proofpoint POD, MTA, and IMD clusters.
- Good knowledge in EOP, Security & Compliance, AD Connect, hybrid Exchange, Exchange Online, mail flow, AAD, and other Office 365 services.
- Security & Compliance, Microsoft Defender, and Defender XDR.
- SAML, OAuth 2.0, and OIDC.
- I am skilled in SharePoint and OneDrive.
- Knowledge in Proofpoint email relay.
- Experienced in WSUS patching.
- Experienced in hybrid object management and managing Active Directory attributes.
- Knowledgeable in Okta third-party authentication for SSO.
- Experienced in managing Engine products for AD audit.
- RBAC and PAM.
- Knowledge of Postman and REST API for the Graph API integration.
Certification
Microsoft Azure Fundamental Certified (Az-900)
Timeline
Tech Lead
Cognizant Tech Solutions
01.2022 - Current
Analyst
HCL Tech
10.2018 - 01.2022
Bachelor of Engineering - Mechanical Engineering
Dhanalakshmi Srinivasan College of Engg And Tech