Network Engineer

General information

Requisition # R60626 Locations USA-AL-Huntsville Posting Date 05/21/2025 Security Clearance Required Top Secret Remote Type Onsite Time Type Full time

Description & Requirements

Transform the future of federal services with ManTech! Join a vibrant, energetic team committed to enhancing national security and public services through innovative tech. Since 1968, we’ve partnered with Federal Civilian sectors to deliver impactful solutions. Engage in exciting projects in Digital Transformation, Cybersecurity, IT, Data Analytics and more. Ignite your career and drive change. Your journey starts now—innovate and excel with ManTech!

ManTech seeks a motivated, career and customer-oriented Network Engineer to join our team in Huntsville AL to support a mission critical cybersecurity environment and program.  

Responsibilities include but are not limited to:

• Perform as a contributor with knowledge and experience in supporting LANs, WANs, communications (VTC and VOIP), VPN, Remote Access and related software/hardware within a multiple classification and multi-platform operating environment.

• Responsible for the integration of a network including assisting in the planning, design, installation, maintenance, management, and coordination of the network.

• Current on most technological developments and applications and helps to evaluate vendor products to make recommendations for purchase.

• Monitor, maintain, troubleshoot, and support firewalls, routers, switches, proxies, VPN, DNS, email, and SD-WAN and cloud routing to include Cisco CSRs;

• Optimize network performance to achieve the desired QoS and KPIs/Service Levels;

• Proactively identify issues, monitor capacity / demand and recommend potential solutions

• Monitor and trace network traffic across multiple boundaries to resolve faults;

• Develop and implement network upgrades, change requests for firewalls, firewall policies, routing, switching, proxy services, VPN, remote access, DNS, mail, SD-WAN and public cloud service deployments (AWS and Azure).

• Responsible for design, deployment, testing, certification, patching, and addressing interoperability issues for all features, components, and application dependencies. To include switches, firewalls, load balancers, software defined networking, private cloud requirements, etc.

• Create and maintain secure device configuration baselines;

• Support incident response and project implementation with internal and external teams and third-party vendors;

• Troubleshoot and fix any network device issue as well as support upgrades and/or net new network device or tooling implementations.

• Provide after hours support as needed.

Basic Qualifications:

• Possess 5+ years of IT experience with 2+ years as a network engineer/ administrator experience

• Demonstrated experience maintaining, troubleshooting, and supporting firewalls, routers, switches, proxies, VPN, DNS, email, and LAN/ WAN and cloud routing

• Demonstrated experience optimizing networks

• Hands on experience using Cisco management and monitoring tools

• Demonstrated experience of NIST 800 series publications and Federal Informa􀆟on Security Management Act (FISMA) compliance

Preferred Qualifications:

• A bachelor’s degree in computer science or related field

• Proficient with ServiceNow

• Experience supporting RMF / NIST security protocols for securing network environment and supporting achieving and maintaining ATOs.

• Preferred Certifications:

  • Cisco Certified Network Professional (CCNP)

  • Microsoft Windows Server Hybrid Administrator Associate

  • VMware Data Center Virtualization (VCP-DCV)

  • Certified Informa􀆟on Systems Security Professional (CISSP)

Clearance Requirements:

• Must possess an active Top Secret security clearance with the obtain SCI eligibility prior to starting this position.

Physical Requirements:

• Must be able to be in a stationary position more than 50% of the time 

• Must be able to communicate, converse, and exchange information with peers and senior personnel 

• Constantly operates a computer and other office productivity machinery, such as a computer 

• The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations 

• The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

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.