Lead Network Engineer

Duration: Long Term Contract

Job Summary:

• Serve as a hands-on senior engineer on enterprise network team, working with the technical lead, project managers and stakeholders.
• Design, plan, implement and maintain enterprise LAN/WAN, Zscaler and network security infrastructure, including routers, switches, firewalls and remote access systems.
• Configure and manage Cisco ASA / Firepower and Palo Alto (Panorama) firewalls, Cisco switches and remote access systems for secure, scalable operations.
• Implement and support RSA SecurID / RSA Authentication Manager integrated with VPN, RADIUS and LDAP, and Cisco Identity Services Engine (ISE).
• Troubleshoot complex network, VPN and authentication issues using Wireshark packet captures, SolarWinds, Riverbed, Grafana and Cribl.
• Design, implement and troubleshoot IPv4 and IPv6 network architectures; manage Azure network security groups (NSGs).
• Perform Cisco switch and firewall software upgrades, vulnerability remediation and TLS certificate renewals during scheduled maintenance windows under change management.
• Maintain network-security SOPs, network diagrams and technical documentation, support backup, recovery and federal and HHS policy compliance.
• Support network upgrades, technology refresh and new-technology evaluations, and assist with hardware, software and vendor procurement.

Required Qualifications

• Bachelor’s degree or an equivalent combination of education and experience.
• 10+ years of network engineering experience in federal or enterprise-level IT environments.
• Cisco ASA 5500 / Firepower firewalls (required); Palo Alto firewalls managed with Panorama.
• Expert Cisco switching, including network software upgrades; LAN/WAN routing and switching; IPv4 and IPv6.
• Expert troubleshooting of complex network issues, including packet-capture (PCAP) analysis with Wireshark.
• Zscaler, Cisco IPsec VPN troubleshooting and Cisco Identity Services Engine (ISE).
• RSA SecurID / RSA Authentication Manager and network authentication protocols (RADIUS, LDAP).
• Azure networking with network security groups (NSGs).
• SolarWinds, including automation scripts; Riverbed, Grafana or Cribl for monitoring and troubleshooting.
• Vulnerability remediation, TLS certificate renewal and installation, and change management processes.
• Writing, maintaining and implementing network-security SOPs and technical documentation (required).
• Willing to work onsite after hours and on weekends for maintenance windows and to take part in the on-call rotation (required).
• Strong problem-solving, communication and organizational skills.
• Able to pass a Public Trust (NACI / Tier 1) investigation; must have lived in the U.S. at least 3 of the last 5 years.

Preferred Qualifications

• Experience supporting any federal civilian agency networks.
• CCNP, Palo Alto PCNSE, Zscaler or Cisco ISE certifications.
• NetScaler / Citrix ADC exposure.

22nd Century Technologies, Inc. (TSCTI) is one of the fastest-growing IT Services Integrators and Workforce Solutions providers in the United States. Founded in 1997, TSCTI is a Certified National Minority Business Enterprise (MBE) with a workforce of 6,000+ professionals, including 600+ Cybersecurity Subject Matter Experts (SMEs), delivering mission-critical solutions across all 50 U.S. states, Canada, and Mexico.

Headquartered in Princeton, NJ, and McLean, VA, with 14 regional offices nationwide, TSCTI provides comprehensive solutions in Digital Transformation, Artificial Intelligence (AI), Cybersecurity, Cloud Computing, IT Infrastructure, Enterprise Modernization, DevSecOps, Managed Services, Workforce Solutions, and Healthcare Staffing. We are a trusted partner to Federal, State, Local, Education (SLED), Healthcare, and Commercial organizations, delivering innovative technology and talent solutions that enable our clients to achieve their strategic objectives.

As one of the nation's leading Healthcare Workforce Solutions providers, TSCTI supports federal healthcare systems, Veterans Affairs (VA) Medical Centers, state and local healthcare agencies, hospitals, clinics, laboratories, long-term care facilities, and commercial healthcare organizations. We recruit and place highly qualified healthcare professionals across a wide range of specialties, including physicians, advanced practice providers, registered nurses, allied health professionals, behavioral health specialists, laboratory personnel, pharmacy professionals, and healthcare administrative staff. Our healthcare solutions ensure continuity of care while maintaining the highest standards of clinical excellence and regulatory compliance.

With a strong commitment to quality and compliance, TSCTI operates through CMMI Level 3 (Development & Services) and ISO 9001, ISO 20000, and ISO 27001 certified processes, ensuring consistent service excellence, operational maturity, and information security. Today, we proudly support 14 of the 15 Federal Executive Departments, 37 Federal agencies, 50 State governments, 115+ Local agencies, 37 School Districts, numerous healthcare organizations, and 80+ Fortune 500 and commercial clients.

TSCTI has earned numerous industry recognitions, including being named among Forbes America's Best Large Employers, Forbes Best Employers for Veterans, Forbes Best Employers for Tech Workers, Newsweek's America's Greatest Workplaces for Diversity, and a 13-time Inc. 5000 honoree. The company has also been recognized by the Washington Business Journal as one of the Best Places to Work and continues to expand its capabilities through strategic innovation, acquisitions, and investments in emerging technologies.

At TSCTI, our people are our greatest strength. We are committed to fostering an inclusive, collaborative, and growth-oriented workplace where innovation thrives and careers flourish. Whether delivering cutting-edge technology solutions or connecting exceptional talent with meaningful careers, we consistently exceed our clients' expectations while empowering our employees to succeed.

Equal Opportunity Employer

22nd Century Technologies, Inc. is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.