Senior Lead Engineer - IT

Guardian Life; Gurugram District; On-site; INR 1,800,000 - 3,000,000; Full time

Job summary

Guardian Life is seeking an experienced IT professional to administer Microsoft 365 messaging, Exchange Online/Server, and related security gateways for a large enterprise. You will support mail, collaboration, and governance across multiple platforms while ensuring reliable service during US business hours.

The role requires hands-on expertise with Proofpoint or similar gateways, strong PowerShell skills, and effective incident management within ITSM processes.

Qualifications

• Seven or more years of hands-on experience administering Microsoft 365 messaging and collaboration services in a large enterprise environment.
• Experience administering Exchange Online and Exchange Server with a focus on SMTP relay and hybrid dependencies.
• Advanced troubleshooting across Outlook, OWA, mail flow, message trace, and email authentication technologies.

Responsibilities

• Administer Exchange Online, SMTP relay, Outlook desktop, OWA, and Proofpoint Email Security Gateway.
• Manage Microsoft 365 collaboration platforms including Teams, SharePoint Online, OneDrive, and Copilot components.
• Coordinate migrations and platform changes with partners, providing guidance and validation.
• Resolve incidents, perform root-cause analysis, maintain documentation, and mentor teammates.

Skills

Microsoft 365

Exchange Online

Exchange Server

Email security gateway

Proofpoint

Outlook troubleshooting

Active Directory

MS Entra ID

PowerShell

Microsoft Graph

Education

Bachelor's degree in IT/CS/Engineering

Tools

Mimecast

Proofpoint

Microsoft Defender for Office 365

Zoom (admin)

Job description

Job Description

• Shift timings: 5 PM - 2 AM or 6 PM to 3 AM (Night Shift)
• Bachelor’s degree in information technology, Computer Science, Engineering, or a related field, or equivalent practical experience.
• Seven or more years of hands-on experience administering Microsoft 365 messaging and collaboration services in a large enterprise environment, preferably supporting approximately 15,000 to 20,000 or more users.
• Hands-on experience administering Exchange Online and Exchange Server, with the on-premises Exchange footprint focused on SMTP relay and related hybrid dependencies rather than on-premises mailboxes or Database Availability Groups.
• Advanced troubleshooting experience with Outlook desktop, OWA, mail flow, message trace, transport rules, connectors, shared and resource mailboxes, distribution groups, permissions, Autodiscover, mobile access, and email authentication technologies such as SPF, DKIM, and DMARC.
• Hands-on experience administering an enterprise email security gateway, preferably Proofpoint. Experience with other common enterprise platforms, such as Mimecast or Microsoft Defender for Office 365, will also be considered.
• Hands-on experience supporting Microsoft Teams, excluding Teams Phone, SharePoint Online, OneDrive, and Microsoft 365 Apps for enterprise.
• Working knowledge of Active Directory and its relationship with Exchange Server and Microsoft Entra ID synchronization.
• Experience working within formal IT service management processes, including incident, request, problem, change, knowledge, and service-level management.
• Need to work during US business hours.

Required Qualifications & Shift

• Shift timings: 5 PM - 2 AM or 6 PM to 3 AM (Night Shift)
• Bachelor’s degree in information technology, Computer Science, Engineering, or a related field, or equivalent practical experience.
• Seven or more years of hands-on experience administering Microsoft 365 messaging and collaboration services in a large enterprise environment, preferably supporting approximately 15,000 to 20,000 or more users.
• Hands-on experience administering Exchange Online and Exchange Server, with the on-premises Exchange footprint focused on SMTP relay and related hybrid dependencies rather than on-premises mailboxes or Database Availability Groups.
• Advanced troubleshooting experience with Outlook desktop, OWA, mail flow, message trace, transport rules, connectors, shared and resource mailboxes, distribution groups, permissions, Autodiscover, mobile access, and email authentication technologies such as SPF, DKIM, and DMARC.
• Hands-on experience administering an enterprise email security gateway, preferably Proofpoint. Experience with other common enterprise platforms, such as Mimecast or Microsoft Defender for Office 365, will also be considered.
• Hands-on experience supporting Microsoft Teams, excluding Teams Phone, SharePoint Online, OneDrive, and Microsoft 365 Apps for enterprise.
• Working knowledge of Active Directory and its relationship with Exchange Server and Microsoft Entra ID synchronization.
• Experience working within formal IT service management processes, including incident, request, problem, change, knowledge, and service-level management.
• Need to work during US business hours.

Preferred Qualifications

• Experience working for a regulated company and supporting Microsoft 365 at large-enterprise scale.
• Experience using ServiceNow for core IT service management processes.
• PowerShell and Microsoft Graph experience supporting automation, reporting, and administration.
• Working knowledge of Microsoft Entra ID, Microsoft Purview, and Microsoft Defender for Office 365 sufficient to partner with the teams that own these services.
• Familiarity with Microsoft 365 application integrations, including Teams applications, Outlook and Office add-ins, Microsoft Graph, Microsoft Entra application registrations, SMTP relay, and calendaring integrations.
• Familiarity with Microsoft 365 Copilot, Copilot Studio, Power Automate, Microsoft Bookings, Microsoft 365 Groups, Planner, Forms, Viva Engage, Viva Connections, and related Microsoft 365 capabilities.
• Experience supporting migration or onboarding initiatives led by external partners, administering Zoom, or holding relevant Microsoft or Proofpoint certifications.

You will

• Administer enterprise messaging and email security services: Exchange Online, the limited on-premises Exchange footprint used for SMTP relay, Outlook desktop, OWA, and the Proofpoint Email Security Gateway.
• Administer Microsoft 365 collaboration and productivity platforms: Microsoft Teams, SharePoint Online, OneDrive, Microsoft 365 Apps for enterprise, Bookings, Viva Engage, Viva Connections, Power Automate, Microsoft 365 Copilot, and Copilot Studio, with secondary support for Zoom.
• Support Microsoft 365 application integrations: Partner with application owners and development teams on Entra application registrations, Teams apps, Outlook and Office add-ins, Microsoft Graph integrations, SMTP relay, calendaring services, and related platform capabilities.
• Coordinate partner-led migrations and platform changes: Provide planning input, technical guidance, testing, validation, and post-implementation support. Assist with SharePoint integrations while maintaining a focus on platform administration rather than SharePoint application development.
• Operate and continuously improve the services: Resolve incidents, perform root-cause analysis, manage changes and vendor escalations, support audits, maintain documentation and operational reporting, automate repeatable work, and mentor less experienced team members.

Location

This position can be based in any of the following locations:

Chennai, Gurgaon