Senior Network Engineer

Adaptivestack Technologies Inc.; Bethesda (MD); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Competitive salary

Comprehensive benefits

Long-term growth opportunities

Job summary

A leading technology firm is seeking a highly experienced Senior Network Engineer in Bethesda, Maryland. You will support enterprise-scale network design and security for federal health agencies. Responsibilities include optimizing network architectures, managing hardware, and ensuring compliance with federal IT standards. Ideal candidates have 7+ years of experience, a Bachelor's in Computer Science, and strong troubleshooting skills. Join a collaborative environment committed to supporting the nation’s healthcare missions.

Qualifications

• 7+ years of hands-on experience in enterprise network engineering.
• Deep knowledge of Cisco routing/switching, firewalls, VPNs, and wireless networks.
• Strong diagnostic and troubleshooting skills in complex environments.

Responsibilities

• Design, implement, and optimize LAN/WAN and wireless network architectures.
• Lead installation, configuration, and lifecycle management of enterprise network hardware.
• Monitor and diagnose complex network performance and security issues.

Skills

Cisco routing and switching

Firewalls

VPNs

Wireless networks

Load balancing

Troubleshooting

Education

Bachelor’s degree in Computer Science

Tools

F5 Big-IP

ScienceLogic SL1

Cisco DNA Center

Infoblox

Job description

Adaptivestack Technologies is seeking a highly experienced and technically proficient Senior Network Engineer to support enterprise‑scale network design, operations, and security for the National Institutes of Health (NIH) Center for Information Technology (CIT).

This role ensures the stability, integrity, and performance of NIH’s voice, data, video, and wireless networks across LAN, WAN, and cloud infrastructure. The ideal candidate will have extensive hands‑on experience in planning, designing, deploying, and managing secure network solutions in a high‑availability, compliance‑driven federal environment.

Key Responsibilities

• Design, implement, and optimize complex LAN/WAN and wireless network architectures, including data center, enterprise, and cloud connectivity.
• Ensure the stability and integrity of all network services, including voice (VoIP), data, and video traffic.
• Lead and support installation, configuration, and lifecycle management of enterprise network hardware and software (Cisco, Palo Alto, F5, Infoblox).
• Monitor, diagnose, and resolve complex network performance and security issues using enterprise tools (e.g., Cisco DNA Center, Grafana, Net LineDancer, Thousand Eyes).
• Maintain and manage core network services such as DNS, DHCP, VPN, BGP/OSPF routing, NAC, and firewall configurations across multi‑vendor environments.
• Provide expert‑level support for network architecture initiatives, including Zero Trust Network Architecture (ZTNA), Trusted Internet Connections (TIC), and hybrid cloud integration.
• Lead vulnerability remediation efforts and coordinate with cybersecurity teams on compliance with NIST and NIH IT security standards.
• Document and maintain network topologies, configurations, and standard operating procedures.
• Mentor junior engineers and provide end‑user training as needed for escalated issues and new technologies.
• Participate in change control, incident response, and continuity of operations (COOP) activities.
• Actively engage in strategic planning to align network evolution with NIH’s mission and business requirements.

Required Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or related field (or equivalent experience)
• 7+ years of hands‑on experience in enterprise network engineering and infrastructure support
• Deep knowledge of Cisco routing and switching technologies, firewalls, VPNs, wireless networks, and load balancing
• Proficiency with network design principles, subnetting, VLANs, QoS, SNMP, and IPv4/IPv6
• Experience supporting federal IT environments and compliance with FISMA, NIST 800‑53, and TIC requirements
• Strong diagnostic and troubleshooting skills in complex, distributed environments
• Ability to manage large‑scale network projects and support 24x7x365 operational requirements

Preferred Qualifications

• Experience with NIH, HHS, or other federal health/science agencies
• Familiarity with tools such as:
• F5 Big-IP, AlgoSec
• ScienceLogic SL1, SecureCRT, Infoblox, ZEN
• Certifications such as:
• Cisco CCNP or CCIE
• CompTIA Network+, Security+
• Palo Alto Networks Certified Network Security Engineer (PCNSE)
• Experience implementing cloud‑based networking (AWS/Azure hybrid connectivity)

Why Join Adaptivestack Technologies?

At Adaptivestack Technologies, we empower federal agencies with secure, scalable, and mission‑driven IT services. As a WOSB and HUBZone‑certified small business, we prioritize technical excellence, inclusion, and community impact.

We offer:

• Competitive salary and comprehensive benefits
• Long‑term growth on critical federal infrastructure contracts
• A collaborative, innovative, and technically focused team culture
• The opportunity to directly support the nation’s healthcare and scientific research missions