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Senior On-Premises Exchange & Messaging Infrastructure SME
Location
United States
Posted
1 day ago
Salary
$100 - $150 / hour
Seniority
Senior
Job Description
Senior On-Premises Exchange & Messaging Infrastructure SME
GEM Technologies
Role Description We are seeking a Senior On-Premises Exchange & Messaging Infrastructure Subject Matter Expert (SME) to join our team as a long-term independent contractor. This role is designed for an expert who enjoys solving complex technical challenges, mentoring experienced engineers, and serving as a trusted advisor for architecture, escalated production issues, and advanced troubleshooting. It is not a help desk position or a role for someone whose experience is limited to routine Exchange administration. As our Senior On-Premises Exchange & Messaging Infrastructure SME, you will provide expert guidance on complex on-premises Microsoft Exchange Server environments while working alongside our engineering team. Your responsibilities will include: - Troubleshooting complex Exchange production issues and providing architectural guidance. - Large-scale enterprise messaging environments. - Supporting upgrades, migrations, disaster recovery, performance optimization, and Exchange Hybrid deployments. - Supporting Exchange environments utilizing Citrix NetScaler (ADC) and Citrix CVAD. - Mentoring our engineers through collaborative troubleshooting and knowledge transfer. - Recommending best practices for security, reliability, and performance. - Creating technical documentation and participating in scheduled maintenance or critical production support when needed. Qualifications - Extensive, hands-on experience with on-premises Microsoft Exchange Server and related infrastructure. - Experience with Microsoft Exchange Server 2013, 2016, 2019, and Subscription Edition. - Knowledge of Exchange Hybrid with Microsoft 365. - Familiarity with DAGs, mail flow, transport services, Autodiscover, certificates, SMTP, DNS, SPF, DKIM, and DMARC. - Experience with Active Directory, Windows Server, Group Policy, PowerShell, Microsoft Entra ID, and Azure AD Connect. - Understanding of high availability, disaster recovery, and Exchange security hardening. - Experience with Citrix NetScaler (ADC), including Exchange publishing, reverse proxy, SSL offloading, and load balancing. - Knowledge of Citrix CVAD administration and troubleshooting. - Experience with VMware or Hyper-V. Requirements - Be legally authorized to work in the United States. - Reside within the United States. - Demonstrate expert-level Microsoft Exchange knowledge during the interview process. - Be comfortable mentoring engineers and documenting solutions. - Communicate clearly and professionally with technical team members. Benefits - Independent contractor position. - Remote within the United States. - Long-term consulting relationship. - Flexible workload based on client demand. - Hourly Contract Rate: $100–$150 per hour, based on experience, technical expertise, certifications, interview performance, and the complexity of the engagement. Preferred - Has worked for a Managed Services Provider or consulting firm. - Comfortable being an advisor and teacher, not just a doer. - Can quickly diagnose complex Exchange environments. - Microsoft Exchange on-prem experience. - Can work independently and join calls when needed. - Strong communication skills. Interview Process Qualified candidates should expect a technical interview focused on real-world troubleshooting, Exchange architecture, disaster recovery, PowerShell, mail flow, hybrid deployments, load balancing, and related Microsoft infrastructure technologies. We value practical experience and problem-solving ability over memorized interview answers or certifications alone.
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