Lead Network and Infrastructure Engineer

Mantech International • Herndon, VA

75d

About The Position

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 Infrastructure 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.

Requirements

• 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 technologies.
• Expert level architecture creation and support experience; strong troubleshooting and documentation skills.
• Proficiency in routing/switching, VPNs, firewalls, and load balancing in enterprise and secure environments.
• Experience supporting federal networks and knowledge of RMF, DISA STIGs, or NIST 800-53.
• Familiarity with Cloud network integrations (AWS, Azure, Oracle Cloud, etc.).
• Experience with Terraform scripting or AWS/Cloud Formation.
• Prior experience supporting the Intelligence Community.

Nice To Haves

• Certifications: CCNP, CISSP, CEH, JNCIP, or similar.
• Experience with SD-WAN, Zero Trust architecture, or hybrid-Cloud networking.
• Knowledge of federal compliance frameworks (FedRAMP, FISMA, CMMC).

Responsibilities

• 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.

What This Job Offers

• Job Type: Full-time
• Industry: Professional, Scientific, and Technical Services
• Education Level: Bachelor's degree
• Number of Employees: 5,001-10,000 employees