Senior Firewall Architect – Enterprise Security Lead (TS/SCI)

D2 Technical Services; Town of Springfield (WI); On-site; USD 130,000 - 140,000; Full time

Benefits offered by this job

Health/Dental/Vision

401(k) match

Accrued PTO

STD/LTD/Life Insurance

Referral Bonuses

Professional development reimbursement

Job summary

D2 Consulting seeks a Senior Firewall Engineer to design, implement, and defend secure enterprise networks for government and corporate customers. You will manage the full stack—firewalls, IDS, web/mail gateways—and lead incident response efforts in a high-impact environment.

The role requires active TS/SCI clearance, DoD 8140/8570 compliance, and hands-on experience with Palo Alto/Juniper/Cisco devices. A BA/BS is preferred but strong equivalent experience is welcome.

Qualifications

• 5+ years in Network Security within large-scale enterprise or global environments.
• Active TS/SCI clearance and ability to pass a U.S. Government polygraph.
• DoD 8140.01 / 8570.01-M IAT Level II compliant certification.
• CSSP Infrastructure Support certification or drive to earn it within 120 days of starting.

Responsibilities

• Design & build state-of-the-art secure network architectures from concept to implementation.
• Protect the network by managing WAN, LAN, CAN, and remote security environments, handling incidents with speed and precision.
• Own the security stack—firewalls, F5 load balancers, web/mail gateways, IDS platforms, and management tools.
• Lead incident response—investigate, document, and drive corrective action when it matters most.
• Shape security operations by developing SOPs the broader team will rely on.
• Stay ahead of threats by researching and evaluating emerging network security technologies.
• Be the expert in the room—liaise with contract leadership, customers, and government stakeholders on security posture.

Skills

Network Security

Incident Response

Security Operations

Threat Research

Education

BA/BS degree

Tools

FireEye

F5 Load Balancer

Cisco FTD

Unix/Linux

Job description

D2 Consulting seeks a Senior Firewall Engineer to design, implement, and defend secure enterprise networks for government and corporate customers. You will manage the full stack—firewalls, IDS, web/mail gateways—and lead incident response efforts in a high-impact environment.

The role requires active TS/SCI clearance, DoD 8140/8570 compliance, and hands-on experience with Palo Alto/Juniper/Cisco devices. A BA/BS is preferred but strong equivalent experience is welcome.