MANTECH seeks a motivated, career and customer-oriented Principal Exchange Engineer to join our team in Chantilly, VA. The position is onsite.
Responsibilities include but are not limited to:
Install, configure, maintain, and optimize Microsoft Exchange Server environments to ensure reliable and secure messaging infrastructure
Troubleshoot complex mail flow, connectivity, permissions, and filtering issues, escalating when needed and resolving high-impact incidents
Lead the development and documentation of system processes and train team members to ensure operational consistency and knowledge transfer
Monitor performance, capacity, and backups; perform test restores and implement system updates, patches, and improvements
Design and implement Exchange-related components, tools, and enhancements to support enterprise infrastructure and collaboration
Contribute to strategic planning, solve complex technical problems, and lead Exchange engineering projects or functional teams when required
Minimum Qualifications:
Bachelor’s degree and 7+ years of relevant Microsoft Exchange experience; an Associates degree with additional 2+ years of experience, or a High School Diploma with an additional 4+ years of experience may be substituted for a Bachelors degree
Expert-level knowledge of Microsoft Exchange Server technologies, including on-premise
Experience with Active Directory, Domain Name System (DNS), and Dynamic Host Configuration Protocol (DHCP)
Experience performing Exchange server upgrades, migrations, and deployments
Knowledge of email security technologies, such as email content filtering
IAT Level III/DoD 8140 Advanced certification, e.g., SecurityX or CASP+ within 6 months of hire
DoD 8570 Computing Environment certification within 6 months of hire
Preferred Qualifications:
One of the following certifications is desired: MCSE - Microsoft Certified System Engineer, MCSE - Microsoft Certified Solutions Expert, MCSA - Microsoft Certified Solutions Associate, MCITP - Microsoft Certified Information Technology Professional, VMware VCP - VMware Certified Professional, CCNA - Cisco Certified Network Administrator
ITIL v.3 Foundations or later certification highly desired
Experience using a Service Desk ticketing system, such as TrackIT or ServiceNow
Previous customer service experience strongly desired
Clearance Requirements:
Must have a current and active Top Secret clearance, and be willing and able to obtain a polygraph
Physical Requirements:
The person in this position must be able to remain in a stationary position 50% of the time.
Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

MANTECH is more than a technology company. We are a company dedicated to service, and we consider our work a part of the public trust. The people of MANTECH are privileged to work for the security of the United States, the welfare of our service members and veterans, the protection of our communities, and the cause of better health care.
We have served the nation for more than 57 years, and in that time we have continually changed and grown to provide the technology that government needs to meet new challenges. We seek people with the same strong ethic of service, creativity, energy, and dedication to serving our country.
We are comprised of more than 9,800 talented employees around the world. Nearly 40% of our employees are veterans. Many others come from the Intelligence Community, Homeland Security and federal civilian agencies. We understand our customers’ challenges because we know their world firsthand.
When Federal managers and military leaders face tough challenges in cyber, data collection & analysis, enterprise IT or systems and software engineering, they turn to MANTECH to get the job done right. These professionals trust MANTECH and stay with us for years because we understand their needs and tackle their most complex challenges head on. They know that reaching their goal is our ultimate objective.