Senior Server Engineer - Exchange and Cloud Infrastructure

Job

Senior Server Engineer

Location: 55 Trinity Avenue, Suite G700 Atlanta, Georgia 30303

Duration: 12 Months

Client: ATL - AIM General

Hybrid Job

Position Summary

The Senior Server Engineer (Contract) will lead engineering, troubleshooting, and optimization of enterprise messaging platforms including Microsoft 365 Exchange, Exchange on-premises, Proofpoint, Defender for Email, and Azure-based identity and security services. The contractor will provide advanced support, assist with migrations and modernization initiatives, enhance security posture, and serve as a subject matter expert (SME) for email and messaging infrastructure.

This role requires deep technical experience in enterprise messaging architectures, hybrid Exchange environments, email security, and Windows server systems, with the ability to work independently while collaborating with IT, security, and operational teams.

Key Responsibilities

Messaging Platform Support and Engineering

Lead administration and optimization of Microsoft 365 Exchange Online and on-prem Exchange infrastructure.

Manage mail flow, routing, retention policies, compliance, and hybrid configurations.

Support Exchange infrastructure upgrades, migrations, and service modernization.

Email Security and Protection

Administer Proofpoint email security platform, including:

• Spam filtering
• DLP policies
• Encryption settings
• Quarantine and forensic analysis

Manage Defender for Email (MDO) including ATP, anti-phishing, safe attachments, and threat intelligence.

Troubleshoot and analyze advanced email delivery, threat detection, and user issues.

Azure and Identity Integration

Support Azure AD integration with M365 services, SSO, and hybrid identity synchronization.

Assist with security baselines, conditional access, and identity hardening recommendations.

Incident Response and Troubleshooting

Lead major incident resolution for messaging and email security services.

Perform root cause analysis and provide corrective and preventive action recommendations.

Monitoring, Reporting and Optimization

Develop dashboards and reporting for:

• Message flow trends
• Security detection and blocked threats
• Exchange and M365 service metrics

Analyze performance, deliver improvement recommendations, and support SLA-based reporting.

Documentation and Knowledge Sharing

Create or update:

• Operational SOPs
• Architecture diagrams
• Runbooks
• Root cause and service reports

Mentor internal engineering and operations staff as needed.

Required Qualifications

7 years professional experience supporting enterprise messaging systems.

Deep hands-on knowledge of:

• Microsoft 365 Exchange Online
• Exchange Server (2013/2016/2019)
• Hybrid Exchange coexistence and migrations

Strong experience administering:

• Proofpoint Essentials/Enterprise Protection
  • TAP, TRAP
• Defender for Email/Microsoft Defender for Office 365

Strong troubleshooting skills in:

• Email routing
• SMTP protocols
• DNS (MX, SPF, DMARC, DKIM)

Experience with Azure AD and identity integration.

Preferred Skills

Power Shell scripting for automation and reporting.

Experience working in government, education, financial, or regulated environments.

Familiarity with:

• Message trace tools
• Transport rule design
• Microsoft Purview compliance solutions

Ability to provide architecture guidance and evaluation of new email security technologies.