Mantech

ManTech seeks a driven and experienced Senior Windows Engineer to join our team in Herndon, VA. This role is ideal for a technology professional who thrives in secure, mission-critical environments and is passionate about delivering robust Windows-based infrastructure solutions. The successful candidate will play a pivotal role in the architecture, deployment, and sustainment of systems that align with federal IT and cybersecurity standards, including FISMA, FedRAMP, and DoD compliance frameworks.
 

Key Responsibilities

• Design, implement, and maintain scalable Windows Server environments (2016, 2019, 2022).
• Administer and troubleshoot Active Directory, DNS, DHCP, Group Policy Objects (GPOs), and Windows Clustering.
• Automate operational processes using PowerShell scripting.
• Apply system hardening in accordance with DISA STIGs and NIST 800-53 security controls.
• Perform patching, updates, and maintenance on Windows servers and workstations within secure networks.
• Support virtualized infrastructure using Hyper-V and VMware; integrate with cloud services such as Azure and AWS GovCloud.
• Partner with cybersecurity teams on vulnerability management, incident response, and compliance audits.
• Participate in configuration and change management processes.
• Develop and maintain technical documentation, diagrams, and Standard Operating Procedures (SOPs).
   

Basic Qualifications

• Bachelor’s degree in Information Technology, Computer Science, or a related field
  OR 4+ years of additional experience in lieu of a degree
• 7+ years of experience in Windows engineering or systems administration
• Proven expertise in:
  • Windows Server (2016/2019/2022)
  • Active Directory in complex environments (e.g., multi-domain forests)
  • PowerShell scripting and automation
  • Group Policy design and troubleshooting
• Familiarity with compliance frameworks such as NIST, FISMA, FedRAMP, and RMF
• Solid understanding of networking principles and enterprise security integration
   

Preferred Qualifications

• Microsoft Certified: Windows Server Hybrid Administrator Associate (or equivalent certification)
• Experience with:
  • Azure AD, Azure Government, or AWS GovCloud
  • Public Key Infrastructure (PKI)
  • Endpoint management tools like SCCM/MECM or Microsoft Intune
  • VMware ESXi and vSphere virtualization platforms
• Background working with DoD or other federal agencies
   

Security Clearance Requirements

• Must be a U.S. citizen residing in the contiguous United States
• Must be eligible to obtain and maintain a government security clearance
   

Physical Requirements

• Ability to remain seated or standing for prolonged periods (approximately 50% of the time)
• Occasional movement within the office for accessing equipment or files
• Regular communication with team members, managers, and clients, including presentation delivery and the exchange of technical information