Job Description

General information

Requisition #
R64891
Locations
USA-VA-Chantilly
Posting Date
12/17/2025
Security Clearance Required
TS/SCI
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 is seeking a motivated, career and customer-oriented Lead Systems Engineer to join our team in Chantilly, VA. This is a position will be managing and advancing a wide-area IT environment and requires specialized depth and/or breadth of expertise.

Responsibilities include but are not limited to:

• Uses best practices and knowledge of internal or external business issues to improve products or services.
• Troubleshooting: Diagnose and resolve complex issues across hardware, firmware, OS, and application layers, often requiring deep-dive root cause analysis.
• Automation: Develop scripts (PowerShell, Bash) for automating routine tasks and
  enhancing operational efficiency.
• Leadership & Mentoring: Lead technical projects, mentor junior engineers, and act as a subject matter expert (SME).
• Providing server/operating system centric expertise for testing, deploying, integrating, and improving upon new and existing IT capabilities.
• Understanding and providing recommendations related to understanding operating system dependencies, physical and virtual server environments, integration with infrastructure resources (e.g. storage and networking), and how to configure operating systems and applications in an efficient manner.
• Maintaining platforms of common hypervisors and enterprise applications, including collaboration tools, Systems Information and Event Monitoring (SIEM) products, directory services, and automation technologies.
• Identifying and mitigating security vulnerabilities, testing and documenting security-relevant changes, and communicating with vendors to assess new
  technologies.

Minimum Qualifications:

• Bachelor’s degree in Computer Science, Systems Engineering, or equivalent field and at least 7 years of experience in information technology, leveraging software applications and tools to meet customer requirements. (2 years of additional experience may be substituted in lieu of degree)
• Current DoD 8570 IAT II certification (Security +, SSCP, or equivalent) or ability to obtain one within 180 days.
• Experience writing clear, concise, and user-friendly technical and training manuals or similar documentation to include documents required for A&A and system administrator SOP’s.
• Ability to perform Tier 3 operational maintenance on audit systems to include:
  system engineering, system administration, database management, backup
  administration, change configuration and management, policy creation, and
  certification and accreditation procedures.

Preferred Qualifications:

• Leadership & Mentoring: Lead technical projects, mentor junior engineers, and act as a subject matter expert (SME).
• Fundamentally skilled and knowledgeable in all aspects of VMWare. VMWare certifications are desirable.
• VMware tiered certification path (VCTA, VCP, VCAP, VCDX) focusing on areas like Data Center Virtualization (DCV), Network Virtualization (NV), Cloud Management & Automation (CMA), Desktop & Mobility, and Application Modernization, with popular choices including VCP-DCV for core vSphere skills, VCP-NV for NSX, and specialists in vSAN or Cloud Foundation, validating expertise from foundational to expert design levels.
• Familiar and knowledgeable in HPE infrastructure such as HPE Synergy hardware, HPE ProLiant Servers, HPE Storage solutions, HPE SimpliVity technologies.
• Experience implementing, working with or troubleshooting VMware NSX-T
  virtualized networking and security platform developed by VMware. It enables
  automated implementation of network policies, network objects, isolation, and
  micro-segmentation

Clearance Requirements:

• Must have an active DoD TS/SCI with the ability 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 International Corporation 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.