Senior Network Engineer

GDIT is seeking a Senior Network Engineer to support the Health Resources & Services Administration (HRSA). You will own the design, operation, and security of HRSA's network infrastructure environment while supporting the broader enterprise LAN/WAN, firewall, and remote-access infrastructure. This is a hands-on engineering role working directly with Project Managers, the Office of Information Security and Privacy (OISP), and desktop/server support teams.

How you will make an impact

• Configure and manage routers, switches, firewalls, and remote access systems in support of secure and scalable network operations
• Implement and support RSA SecurID / RSA Authentication Manager solutions, including integration with VPNs, RADIUS, and enterprise authentication systems
• Design, implement, and troubleshoot IPv4 and IPv6 network architectures, ensuring seamless integration and scalability across environments
• Provides innovative methods and technical solutions using the engineering design process.
• Collaborate closely with Project Managers, engineers, and stakeholders to deliver complex network projects on time and within scope
• Analyze customer and business requirements to develop technical solutions for complex networking challenges
• Ensure network integrity, security, and compliance with federal and organizational policies, including backup and recovery capabilities
• Monitor network performance using industry-leading tools, proactively identifying and resolving issues

What you need to succeed

• Bachelor's degree or equivalent combination of education and experience.
• 8+ years of network engineering experience, including: TCP/IP, DNS, routing/switching, IPsec VPN, firewalls, and end-to-end connectivity troubleshooting, including PCAP analysis with Wireshark.
• Hands-on experience with Cisco switching/IOS upgrades and at least one enterprise firewall platform (Cisco ASA/Firepower or Palo Alto/Panorama).
• Experience in federal or enterprise environments with strict compliance and 99.9%+ uptime requirements; familiarity with NIST 800-53, TIC 3.0, and CISA BODs.
• Formal change-management experience and TLS certificate lifecycle management.
• Excellent communication, documentation, and collaboration skills.

Preferred qualifications

• Zscaler Certified Cloud Professional (ZCCP) or Zscaler Certified Cloud Administrator (ZCCA).
• Okta Certified Professional or higher.
• Cisco ISE, RSA SecurID, SolarWinds scripting, Azure networking (NSGs), Riverbed, Grafana, or Cribl.
• Hands-on experience administering Zscaler (ZIA, ZPA, ZDX).
• Experience integrating Okta or another IdP with Zscaler via SAML/SCIM.

Location: Rockville, MD – onsite 5 days/week

Clearance: Ability to obtain a Public Trust. Must have resided in the U.S. for 3 of the last 5 years and pass a public trust background investigation.

GDIT is your place: 401(k) with company match, comprehensive health and wellness packages, paid education and certifications, internal mobility support, and cutting-edge technology to learn from.

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