Cook Systems · 10 hours ago
Senior Server Engineer - Exchange and Cloud Infrastructure
Atlanta, GA
Full-time
Hybrid
Senior Level
7+ years expCook Systems is a certified veteran-owned IT consulting firm that has been helping businesses grow through innovative technology solutions since 1990. The Senior Server Engineer is responsible for leading the engineering, troubleshooting, and optimization of enterprise messaging platforms, including Microsoft 365 Exchange and Azure-based security services, while providing advanced support and serving as a subject matter expert.
Information ServicesInformation Technology
Responsibilities
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
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
Support Azure AD integration with M365 services, SSO, and hybrid identity synchronization
Assist with security baselines, conditional access, and identity hardening recommendations
Lead major incident resolution for messaging and email security services
Perform root cause analysis and provide corrective and preventive action recommendations
Develop dashboards and reporting for message flow trends, security detection, and Exchange and M365 service metrics
Create or update operational SOPs, architecture diagrams, runbooks, and root cause and service reports
Mentor internal engineering and operations staff as needed
Qualification
Required
7+ years professional experience supporting enterprise messaging systems
Deep hands-on knowledge of Microsoft 365 Exchange Online, Exchange Server (2013/2016/2019), and hybrid Exchange coexistence and migrations
Strong experience administering Proofpoint Essentials/Enterprise Protection and Defender for Email/Microsoft Defender for Office 365
Strong troubleshooting skills in email routing, SMTP protocols, and DNS (MX, SPF, DMARC, DKIM)
Experience with Azure AD and identity integration
Preferred
PowerShell scripting for automation and reporting
Experience working in government, education, financial, or regulated environments
Familiarity with message trace tools, transport rule design, and Microsoft Purview compliance solutions
Ability to provide architecture guidance and evaluation of new email security technologies
Benefits
Choose from two comprehensive medical plans through Blue Cross Blue Shield, with dental and vision coverage included.
Protect what matters most with life, critical illness, and accident insurance through Unum—because your family’s security matters.
Plan ahead and save with a Flexible Spending Account and Daycare FSA through Navia, helping you manage healthcare and dependent-care expenses your way.
Our Health Gap Insurance through Sun Life helps cover unexpected costs, so you’re never caught off guard.
Build your future with our 401(k) plan through The Standard. You’re eligible after just six months—because long-term success deserves a strong foundation.
Company
Cook Systems
Cook Systems is an information technology and services company.
201-500 employees
H1B Sponsorship
Cook Systems has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
2024 (2)
2023 (3)
2022 (2)
2021 (2)
2020 (3)
Funding
Current Stage
Growth StageLeadership Team
W
Wayne Cook
Chairman, founder
Company data provided by crunchbase