Senior Firewall Engineer

Posted 9 Days Ago
Be an Early Applicant
Springfield, VA, USA
In-Office
130K-140K Annually
Senior level
Big Data • Cloud • Information Technology • Consulting • Cybersecurity
The Role
Designs and implements secure enterprise network architectures; manages firewalls, routers, switches, load balancers, gateways, IDS platforms, and security tools across corporate and government environments. Leads incident response, develops security procedures, researches emerging technologies, and advises leadership, customers, and government stakeholders on security posture and policies. Requires active TS/SCI clearance, polygraph eligibility, DoD IAT Level II certification, CSSP Infrastructure Support certification, and at least five years of network security experience.
Summary Generated by Built In

**ACTIVE TS/SCI SECURITY CLEARANCE REQUIRED**


D2 Consulting is looking for a skilled Senior Firewall Engineer to join a high-impact team protecting mission-critical infrastructure. You'll work side-by-side with both corporate and government leadership — meaning your work gets noticed, and your voice matters.

What You'll Actually Be Doing

This isn't a "maintain the status quo" role. You'll be solving real security challenges at enterprise scale:

  • 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 that the broader team will rely on
  • Stay ahead of threats by researching and evaluating emerging network security technologies
  • Be the expert in the room — serve as a trusted liaison to contract leadership, customers, and government DAA stakeholders on security posture, policies, and procedures
What You Bring to the Team

Required Clearance & Certifications:

  • Active TS/SCI clearance (must be current)
  • Ability to pass a U.S. Government Polygraph (post-hire)
  • DoD 8140.01 / 8570.01-M IAT Level II compliant certification (current)
  • CSSP Infrastructure Support certification — or the drive to earn it within 120 days of starting

Experience:

  • 5+ years in Network Security within large-scale enterprise or global environments
  • BA/BS degree preferred — but strong hands-on experience can speak just as loudly.  You can substitute a degree with 4 years of additional experience
  • Firewalls: Palo Alto, Juniper, Cisco
  • Routers/Switches: Juniper, Cisco
  • IDS/Threat Tools: FireEye, F5 Load Balancer, Cisco FTD
  • OS/Platforms: Unix, RHEL, Windows Enterprise AD, VMware
Why This Role?

You'll be part of a team that works on problems that actually matter — supporting government missions at the highest levels. If you're a network security professional who wants scope, challenge, and the chance to influence enterprise-wide security decisions, this is the place.


Additional Information

  • All your information will be kept confidential according to EEO guidelines.
  • Compensation is unique to each candidate and relative to the skills and experience they bring to the position. The salary range for this position is typically $130-140k. This does not guarantee a specific salary as compensation is based upon multiple factors such as education, experience, certifications, and other requirements, and may fall outside of the above-stated range.
  • Highlights of our benefits include Health/Dental/Vision, 401(k) match, Accrued PTO, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, and more!

D2 Consulting is committed to a merit-based recruitment process and encourages applications from all qualified individuals.  As a Veteran-Owned Small Business, we particularly welcome applications from veterans who have the requisite skills and experience.  Job applicants that are interested in one of our openings and may require a reasonable accommodation to participate in the job application or interview process, should contact us to request an accommodation.


Skills Required

  • Active TS/SCI security clearance
  • Ability to pass a U.S. Government polygraph after hire
  • Current DoD 8140.01 / 8570.01-M IAT Level II compliant certification
  • CSSP Infrastructure Support certification, or ability and willingness to earn it within 120 days of starting
  • At least 5 years of network security experience in large-scale enterprise or global environments
  • BA/BS degree
  • Four additional years of experience may substitute for the degree
  • Experience with Palo Alto, Juniper, and Cisco firewalls
  • Experience with Juniper and Cisco routers and switches
  • Experience with FireEye, F5 Load Balancer, and Cisco FTD threat tools
  • Experience with Unix, RHEL, Windows Enterprise AD, and VMware
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The Company
HQ: Arlington, Virginia
30 Employees
Year Founded: 2016

What We Do

D2 Consulting provides services to the Federal Government focused in the following three area's We leverage D2 Consulting engineering, operations and governance best practices to efficiently and effectively deploy, maintain and continuously improve IT services and solutions. This includes not only engineering solutions such as VDI and providing direct support to operations but also deploying the tools to instrument and maintain Enterprise performance and availability (including ITSM and Enterprise Management Tools). Protect & Secure: This is our cyber security practice, which includes functions like audit and information assurance, as well as the traditional mechanics of securing IT systems and services. We have experience working with the Government to better manage risk to help move the accreditation process along. This is especially true with respect to adapting accreditation controls to a cloud environment. Cloud Migration and Data Center modernization/consolidation: This area is focused on cloud migration and adoption as well as data center consolidation. We work to ensure that infrastructure requirements are implemented correctly, according to best practices and in a timely manner.

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