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# Messaging & Collaboration L3 / Level 300 Engineer

- **Company:** Cognizant Technology Solutions Corporation
- **Location:** San Mateo, CA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $16,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Cloud Computing, Domainkeys Identified Mail, Domain-Based Message Authentication Reporting and Conformance (DMARC), Email Filtering, Microsoft Exchange Server, Enterprise Vault, Enterprise Messaging Systems, Routing, Windows PowerShell, Azure Active Directory, Anti-Phishing, Microsoft SharePoint, Servicenow
- **Published:** October 29, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3479377132&tx=TT4542THT&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* 5-8+ years supporting enterprise Messaging environments.
 * Strong Exchange Online and Hybrid Exchange experience.
 * Experience with Proofpoint, Clearswift, or similar email security platforms.
 * Experience with Enterprise Vault administration.
 * Experience handling mailbox migrations and L3 escalations.
 * Experience supporting global Microsoft 365 environments.

## Description

The Messaging & Collaboration L3 Engineer will provide advanced technical support, administration, governance, and escalation management across messaging platforms, email security services, migration tools, and collaboration technologies. The role serves as the highest technical escalation point for Messaging operations and supports enterprise messaging stability, security, compliance, and service continuity. ,

Mandatory Level 300 (L3) SME Skills

Core Messaging Platforms

 * Exchange Online
 * Exchange Server On-Premises / Hybrid Exchange
 * Shared & Application Mailboxes
 * Mail Flow & Transport Management

Email Security & Compliance

 * Proofpoint Cloud
 * Proofpoint On-Prem
 * Clearswift (UK)
 * Enterprise Vault
 * Email Retention, Journaling & eDiscovery

Migration & Collaboration

 * BitTitan Mail Migration
 * Biscom
 * Messaging-related SharePoint/OneDrive integrations

Core Responsibilities

 * Act as the L3 escalation point for Messaging & Collaboration incidents.
 * Administer Exchange Online, Exchange On-Prem, Proofpoint, Clearswift, Enterprise Vault, Biscom, and BitTitan.
 * Troubleshoot complex mail flow, routing, connector, gateway, and hybrid Exchange issues.
 * Support onboarding/offboarding, mailbox provisioning, permissions, and shared mailbox administration.
 * Manage email security, anti-spam, anti-phishing, and secure mail gateway operations.
 * Support mailbox migrations, tenant-to-tenant transitions, and messaging modernization projects.
 * Support retention, legal hold, archive restore, journaling, and compliance activities.
 * Maintain runbooks, SOPs/SOWs, knowledge articles, and transition documentation.
 * Provide KT, reverse KT, and mentoring support for L1/L2 teams. ,

Required Technical Skills

Mandatory

 * Exchange Online
 * Exchange On-Prem / Hybrid Exchange
 * Proofpoint Cloud
 * Proofpoint On-Prem
 * Clearswift
 * Enterprise Vault
 * BitTitan MigrationWiz
 * Biscom
 * Microsoft 365 Administration
 * PowerShell
 * ServiceNow

Preferred

 * Entra ID / Azure AD
 * SPF / DKIM / DMARC
 * Email Security & Compliance
 * SharePoint/OneDrive integration support