Lead Network and Infrastructure Engineer

General information

Requisition # R63690 Locations USA-VA-Herndon Posting Date 10/09/2025 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

***This is for a future opportunity***

MANTECH seeks a motivated, career and customer-oriented Lead Network and Infrastructure Engineer to join our team in Herndon, VA.

 The Lead Network and Infrastucture Engineer will design, implement, and maintain secure and scalable network infrastructure supporting federal clients. You will lead network architecture efforts, oversee implementation, and ensure compliance with government security standards across complex environments, as well as lead the strategic oversight of designing, implementing, and managing compute, storage, and networking as part of the greater project scope and infrastructure. This position plays a critical role in enabling high availability in support of the national security mission. 

Responsibilities include but are not limited to:

• Design, deploy, and manage secure, scalable network and related infrastructure (compute, storage, etc.) solutions across enterprise and mission-critical environments.

• Perform network capacity planning, performance tuning, and optimization.

• Ensure network architecture and infrastructure complies with federal security standards for the respective national security customer (e.g., DISA STIGs, FISMA, FedRAMP, NIST 800-53).

• Develop and maintain documentation including network and infrastructure diagrams, SOPs, and contingency plans.

• Collaborate with cybersecurity, systems engineering, and cloud teams to align on end-to-end architecture, and to support implementation, maintenance and incident response.

• Manage vendor relationships, evaluate tools, and implement new technologies as appropriate.

• Support ATO/accreditation efforts and participate in security audits and assessments.

• Provide escalation support and technical leadership during network incidents and outages.

• Interact with other area Leads to understand dependencies and technical resources to craft a repeatable architecture solution.

Minimum Qualifications:

• Bachelor’s degree in Computer Science, Engineering or related field OR additional equivalent work experience

• 8+ years of experience in network engineering; 3+ years in a technical leadership role

• Strong experience with Cisco, Juniper, or Palo Alto techno