General information
Requisition #
R68786
Locations
USA-VA-Chantilly
Posting Date
06/22/2026
Security Clearance Required
Top Secret
Remote Type
Onsite
Time Type
Full time
Description & Requirements
Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we've been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now-protect and innovate with MANTECH!
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+
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:
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 considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.