Senior Server Engineer - Exchange and Cloud Infrastructure

Position Summary
The Senior Server Engineer (Contract) will lead engineering, troubleshooting, and optimization of enterprise messaging platforms including Microsoft 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 & Engineering
· Lead administration and optimization of Microsoft Exchange Online and on-prem Exchange infrastructure.
· Manage mail flow, routing, retention policie...