SRE Transport – VPN/Firewall

Description

Leidos currently has an opening on the ‘Service Management, Integration and Transport’ (SMIT) Contract for a Firewall, VPN (Virtual Private Network) & DMZ (Demilitarized Zone) Network Engineer located in Norfolk, SDNI, PRLH, etc. Join our team to support the SMIT mission, the largest IT services program for the United States Navy. As part of the Leidos team, you will play a pivotal role in delivering the Navy-Marine Corps Intranet (NMCI) to customers around the globe. We are seeking a skilled Firewall & VPN Network Engineer proficient in network engineering appliances and technologies (i.e., Firewalls, DMZ, VPN) to join our Transport Operations team. In this role, you will be responsible for designing, implementing, and maintaining robust & mature global network security solutions.

Your expertise in configuring enterprise-grade Juniper firewalls, managing DMZ environments, engineering secure Firewall/VPN solutions, and administering Cisco network appliances will be crucial. You will collaborate closely with cross-functional engineering and project management teams to safeguard our network infrastructure against threats and vulnerabilities, ensuring the highest levels of operational integrity. You will be a member of a technical team, managing customer relationships and overseeing key resources for Incident Response, Change Management, Problem Management, Operations and Maintenance (O&M), and ITSM and DevSecOps initiatives.

Primary Responsibilities

• Support Current Operations for the United States Navy by providing VPN, DMZ, and Firewall Network Engineering Subject Matter Expertise (SME) for the largest Intranet in the world. A qualified candidate for this position would be responsible for network modification, operation, integration, maintenance, security, and implementation of services for the as-fielded NMCI network.

• Collaborate with the Network Operations Center, Network Administrators, and the Network Engineering Team to define and/or continuously improve:Network Security Appliances (i.e., DMZ, VPN, Firewalls)Test and Validate Automation and best practice insertion opportunities.Lead development of Network SOPs/TTPsContinuous Service Improvements (CSI)System performance tuning and enhancementsCreate and maintain Engineering Implementation Plans (EIP)

• Plan and execute network upgrades and maintenance activities with the NMCI Operations Manager, NOC Lead, Release Management team, and other key stakeholders.

• Tier III escalation support and vendor engagement supporting Incident Management activities.

• Active participation in Root Cause Analysis for Problem Management activities.

You'll Bring These Qualifications

• Requires B.S. Degree and 8–12 years of prior relevant experience. Work experience may be substituted for degree at Hiring Manager’s discretion.

• U.S. Citizen with an active DoD Secret security clearance.

• Must currently possess an active DoD 8570.01 IAT Level III Certification, i.e., CCNP Security, CISSP, or CASP+.

• Must currently possess an active Associate level Network Vendor Certification (from one of the following Vendors): Cisco, Juniper, Palo, F5 Networks.

• Ability to work or be called in to work during off-hours to meet customer mission support requirements.

• Participate in on-call rotation for Incident Management responsibilities among the Transport Operations team.

• Network Subject Matter Expert for operations providing Tier-III support to the NOC watch staff.

• Perform highly technical maintenance and configuration to firewalls, VPNs, and DMZ appliances.

• Extensive experience engineering and troubleshooting networks, including routing, switching, MPLS, VPNs, routing protocols (i.e., BGP, OSPF, IS-IS), switching protocols (i.e., Spanning Tree Protocol, VLANs, LLDP, VoIP), Multicast protocols, and emerging network technologies.

• Strong understanding and in-depth knowledge of IP network/subnet addressing.

• Extensive knowledge of defense-in-depth principles, Network architecture, Modern Network Topologies, Network appliance integrity, and common networking security elements.

• Ansible, Python, IaC network automation experience.

At Leidos

At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.”

NGEN

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

November 9, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com .

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits .

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected] .

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission (https://reportfraud.ftc.gov/#/) .

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

REQNUMBER: R-00196423

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.