Senior O365 Messaging & Exchange Engineer

Overview

Hybrid
Depends on Experience
Contract - W2
Contract - 3 Month(s)
No Travel Required

Skills

O365 Messaging
Exchange
DNS
SMTP
Proofpoint
Cisco IronPort
ServiceNow
change management
transport rules
mail flow architecture
Power Platform
Microsoft Teams
OneDrive
SharePoint Online integrations
conditional access
MFA policies
eDiscovery.

Job Details

Role : Senior O365 Messaging & Exchange Engineer

Location: Columbus, OH

Duration: 3 Months Contract to Hire.

MOI : Telephonic & MS Teams

Primary Skills: DNS, O365, SMTP

Need Candidates with a minimum of 9 Years of Experience. This is an On-site/Hybrid Model and a contract-to-hire role.

Job Description:

Position Summary:

We are seeking a highly skilled Senior O365 Messaging & Exchange Engineer to lead the design, engineering, and advanced operational support of our enterprise messaging platform. This role will focus on Microsoft Exchange Online (O365) and related technologies, ensuring a secure, reliable, and high-performing email environment. The ideal candidate will also serve as an escalation point for complex operational issues, bringing expertise in email security solutions such as Proofpoint, Cisco IronPort, or similar platforms, along with experience integrating with ServiceNow for IT service management.

Key Responsibilities:

Engineering & Architecture

  • Design, implement, and optimize enterprise messaging solutions leveraging Microsoft Exchange Online, hybrid configurations, and related O365 components.
  • Lead migration and integration efforts during mergers, acquisitions, and platform transitions.
  • Develop and maintain messaging policies, compliance configurations, and transport rules to meet business and regulatory requirements.

Operational Excellence

  • Act as a tier-3 escalation point for complex messaging incidents and service requests.
  • Perform root cause analysis and implement permanent resolutions for recurring issues.
  • Monitor system health and performance, proactively identifying and addressing risks or capacity concerns.

Security & Compliance

  • Administer and optimize email security appliances such as Proofpoint, Cisco IronPort, or equivalent tools.
  • Implement anti-phishing, spam filtering, and data loss prevention measures.
  • Collaborate with security teams to ensure email systems meet compliance and audit standards.

Process & Automation

  • Develop and maintain operational runbooks, engineering documentation, and change management processes.
  • Leverage ServiceNow for incident, problem, and change management, ensuring accurate and timely updates.
  • Identify opportunities for automation to improve operational efficiency.

Qualifications:

Required Skills & Experience:

  • 7+ years of experience in Microsoft Exchange (on-premises and Online/O365) engineering and operations.
  • Proven expertise in Exchange hybrid deployments, migration strategies, and advanced troubleshooting.
  • Strong knowledge of DNS, SMTP, transport rules, and mail flow architecture.
  • Experience with email security platforms such as Proofpoint, Cisco IronPort, or similar.
  • Familiarity with ServiceNow for incident, change, and problem management.
  • Deep understanding of security, compliance, and retention policies in O365.
  • Strong PowerShell scripting skills for automation and reporting.
  • Experience in Power Platform is a plus.

Preferred Skills & Experience:

  • Experience with Microsoft Teams, OneDrive, and SharePoint Online integrations.
  • Exposure to Azure AD, conditional access, and MFA policies.
  • Knowledge of email archiving solutions and eDiscovery.
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