Jobs in the United States

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Added 55 mins ago
Senior, System Administrator (TS/SCI Needed)
L3Harris
Melbourne, FL
Job Title: Specialist, Cyber Infrastructure Systems Engineer (System Administration)
Added 1 hour ago
Cyber Security Engineering Senior Associate
DTCC Candidate Experience
Tampa, FL · Coppell, TX · Dallas, TX
Being a member of CISO team, the Cyber Integration & Orchestration Engineering (CIOE) team is responsible for designing, implementing, and optimizing cybersecurity platforms, integrations,…
Added 1 hour ago
Virtual Desktop Infrastructure Engineer
HO IAP World Services, Inc.
United States
…access solutions, and classified network environments. The Engineer works closely with cybersecurity, network engineering, systems engineering, Information System Security Managers/Officers…
Added 1 hour ago
Thermal Analysis Engineer
CORP-Corporate Office
United States
Northrop Grumman Mission Systems is a trusted provider of mission-enabling solutions for global security. We have a wide portfolio of secure, affordable, integrated, and multi-domain…
Added 1 hour ago
Elastic Agent Engineer
LEIDOS, INC.
Adelphi, MD
Leidos is seeking an experienced Elastic Agent Engineer to strengthen enterprise cybersecurity visibility, endpoint protection, and centralized logging for the U.S. Army C5ISR Cyber…
Added 1 hour ago
Engineering Operations Lead
KODA Technologies Inc.
Huntsville, AL
…Countermeasures Program Directorate (DTT) within the Chief Engineer / Targets Systems Engineering Division (DTTE). In this role, you will serve as the central operational integrator and…
Added 1 hour ago
Senior SIEM Engineer
DTCC Candidate Experience
Tampa, FL
Being a member of CISO team, this position will be reporting to the Associate Director, Cyber Threat Defense and Controls within Cybersecurity Engineering & Operations team. The Senior SIEM…
Added 2 hours ago
Signal Processing Software Engineer
Sabre Systems, Inc
Warminster, PA
Responsibilities As a Signal Processing Software Engineer with Sabre Systems, you will be supporting the Airborne Acoustic Signal Processing (AASP) team that's developing and integrating…
Added 2 hours ago
Senior Cyber Security Engineer - Identity and Device Management, & Networking Security
Latitude AI
Dearborn, MI · Palo Alto, CA · Pittsburgh, PA
The Enterprise Cyber Security team is focused on ensuring the resilience of our corporate environment with focus on protection of our corporate systems, IP, and employee data. We are a…
Added 2 hours ago
Cybersecurity Engineer
SAIC
St. Louis, MO
SAIC is a premier technology integrator, solving our nation's most complex modernization and systems engineering challenges across the defense, space, federal civilian, and intelligence…
Added 3 hours ago
ENGINEER MODEL-BASED 4
Huntington Ingalls Industries
Newport News, VA
E92 Model Based Engineering (MBe) team, is seeking an experienced and highly motivated Model-Based Engineer to join our innovative team and support our efforts to revolutionize how we…
Added 3 hours ago
MGR ENGINEERING 2
Huntington Ingalls Industries
Newport News, VA
…projects, including electrical distribution, water and wastewater systems, steam, chilled water, compressed air, natural gas, and other site utility systems, as…
Added 3 hours ago
Engineer II
General Atomics
Herndon, VA
We have an exciting opportunity for an Electrical Engineer to join our CSS group located in Herndon, VA. The CSS group provides innovative, cutting-edge, security solutions for the United…
Added 4 hours ago
Critical Facility Technician 2 - Fayetteville, GA
M.C. Dean, Inc
FAYETTEVILLE, GA
M.C. Dean is Building Intelligence®. We design, build, operate, and maintain cyber-physical solutions for the nation’s most recognizable mission critical facilities, secure environments,…
Added 4 hours ago
Jr. Offensive Cyber Engineer
Leidos
Lawton, OK
The Jr. Offensive Cyber Engineer needs to have hands-on experience in penetration testing and/or detection engineering to join our team in Lawton, OK. In this role, you will perform…
Added 4 hours ago
Sr. Principal Electrical Engineer/Principal Electrical Engineer
Northrop Grumman
Oklahoma City, OK
Our Advanced Test and Support Systems (ATSS) is seeking a Principal Electrical Engineer OR Senior Principal Electronics Engineer (Level 3 or 4) to join our team of qualified and diverse…
Added 4 hours ago
Senior Software Systems Engineer
Huntington Ingalls Industries
Oklahoma City, OK
HII Mission Technologies is looking for a Senior Systems/Software Engineer to support a classified position located at Tinker AFB, Oklahoma. Must have a TS/SCI clearance. This individuall…
Added 5 hours ago
Cyber Systems Engineer/Principal Cyber Systems Engineer
Northrop Grumman
San Diego, CA
We are looking for you to join our team as a Cyber Systems Engineer/Principal Cyber Systems Engineer based out of San Diego, CA . As a Cyber Systems Engineer/Principal Cyber Systems…
Added 6 hours ago
Cybersecurity Engineer - Washington, D.C.
Serco USA
Washington, DC · Alexandria, VA · Arlington, VA · Andrews AFB, MD · Washington Navy Yard, DC · Frederick, MD · Fairfax, VA · Langley AFB, VA · Herndon, VA · Chantilly, VA · Crystal City, VA · Falls Church, VA · Anacostia Annex, DC · McLean, VA · Bethesda, MD · Manassas, VA · Vienna, VA · Reston, VA · Rosslyn, VA · Silver Spring, MD · Fredericksburg, VA · Quantico, VA · Fort Belvoir, VA · Gainesville, VA · Springfield, VA · Patuxent River, MD · Pax River, MD · Rockville, MD
Serco-NA is seeking a motivated cyber engineer to provide engineering and programmatic support to one of our customers with the U.S. Navy in the Washington, D.C. area.
Added 7 hours ago
Cloud Engineer II- AWS
Honeywell Technologies
Pittsford, NY
Do you enjoy working from the customer perspective and diving deep on issues? As a system development engineer, you will be responsible for the overall health of our AWS cloud-based managed…
Added 10 hours ago
Cyber Software Engineer II
RTX
United States
Experience with system-level integration and testing, specifically, the integration of advanced, custom processing systems, testbeds, and software
Added 10 hours ago
J
macOS Endpoint Security Engineer
Jobgether
Remote, United States
- $65 to $70 USD / hour
We are looking for an experienced macOS Endpoint Security Engineer to contribute to the development of advanced endpoint protection technology. In this role, you will work on a…
Added 12 hours ago
Power Automation Developer
GD Information Technology, Inc.
Remote, United States
HOW an automation engineer WILL MAKE AN IMPACT
Added 15 hours ago
Sentinel Systems Engineer
BAE Systems
Hill AFB, UT
Job Description Launch your career with BAE Systems as a systems engineer supporting the U.S. Air Force's Sentinel weapon system. In this high-visibility role, you will serve as a technical…
Added 16 hours ago
Cyber Defense Full Stack Engineer
BAE Systems
El Paso, TX
Job Description The BAE Systems Office of the CISO is looking for a SecOps-inspired full stack developer with a focus on AI agentic engineering. This developer will solve complex cyber…

L3Harris

Network Plan Engineer

Dahlgren, VA, United States

In compliance with pay transparency requirements, the salary range for this role in Virginia (Greater D.C. area) is $88,500-$164,500.

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Job details

Pay: In compliance with pay transparency requirements, the salary range for this role in Virginia (Greater D.C. area) is $88,500-$164,500.
Posting language: English
Posted: Oct 23, 2026

Original job description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Network Plan Engineer

Job Code: 46430

Job Location: Dahlgren, VA

Job Schedule: 9/80 (Every other Friday off)

Job Description:

As the premier provider of Space Domain Awareness (SDA) mission solutions for the United States Space Force, L3Harris is seeking an experienced Network Engineer to join our team. The ideal candidate will have strong experience in designing, operating, troubleshooting, and securing enterprise networks, with particular expertise in Juniper, Cisco, Palo Alto, automation, and compliance. This role requires a highly capable engineer who can serve as a technical lead for local network modernization, resolve advanced Layer 2/Layer 3 issues, support Zero Trust initiatives, maintain DISA STIG compliance, and execute changes in high-availability environments with minimal or no downtime. This position is onsite at Naval Support Facility Dahlgren, VA.

Essential Functions:

Design, implement, maintain, and troubleshoot enterprise network infrastructure across classified and unclassified environments
Administer and optimize network deployments
Support routing and switching operations, including BGP, OSPF, VLANs, STP, and enterprise segmentation
Perform advanced root cause analysis and resolution of complex network incidents affecting mission-critical operations
Plan and execute network upgrades, patching, and lifecycle refresh efforts with minimal operational impact
Develop and maintain network diagrams, SOPs, TTPs, implementation plans, and technical documentation
Automate network configuration, compliance, and deployment tasks using scripting and templating tools
Implement and maintain DISA STIG‑compliant network configurations across enterprise devices
Support Zero Trust Architecture (ZTA) initiatives through posture assessment, profiling, policy enforcement, and access control
Manage enterprise‑scale switch provisioning and configuration standardization efforts
Monitor network health, availability, and performance using enterprise management tools
Provide technical guidance and escalation support to junior engineers and technicians
Coordinate with cybersecurity, systems, COMSEC, and external organizations to support network changes and vulnerability remediation
Deliver technical briefings and status updates to leadership and stakeholders
Support after‑hours maintenance windows and on‑call response for mission‑critical outages, as needed
Up to 10% travel may be required

Qualifications:

Must have an active Top Secret Clearance with ability to obtain SCI access within 6 months of hire
Bachelor’s Degree in Network Engineering, Information Technology, Cybersecurity, or a related field and a minimum of 4 years of prior relevant experience; Or, Graduate Degree and a minimum of 2 years of prior related experience; Or, in lieu of a degree, a minimum of 8 years of prior related experience
6+ years of experience supporting enterprise network infrastructure in a DoD, federal, or similarly regulated environment
Strong hands‑on experience configuring, maintaining, troubleshooting, and supporting lifecycle management for Juniper and Cisco network devices
Experience applying and maintaining DISA STIG compliance across network devices
Experience leading technical training, mentoring junior staff, or serving as a team SME
Experience with network automation using scripting, templates, or similar tools

Preferred Additional Skills:

Ability to troubleshoot complex network issues across multi‑site or large‑scale environments
Experience producing technical documentation, including diagrams, SOPs, and engineering procedures
Ability to work independently and collaboratively in operationally sensitive, mission‑critical environments
Experience with multi‑vendor network fabric management using Apstra Data Center Director for provisioning, visibility, automation, and lifecycle management
Hands‑on experience troubleshooting on‑premises and off‑premises fiber optic infrastructure, including fiber patching, light‑level verification, and circuit handoff coordination with DISA and/or other government and commercial entities
Experience implementing Zero Trust Architecture using Cisco ISE or similar technologies
Experience configuring Arista and Dell network devices
Experience supporting large‑scale enterprise environments with thousands of endpoints and hundreds of network devices
Experience performing zero‑downtime upgrades in high‑availability environments
Experience with enterprise monitoring and management platforms such as SolarWinds
Experience supporting classified network environments
Hands‑on experience installing, configuring, managing, and troubleshooting ViaSat and GDMS Type 1 encryptors, including COMSEC/keying coordination
Experience coordinating with multiple internal and external organizations before, during, and after planned network changes, emergency remediation, and mission‑critical maintenance windows
Experience submitting vendor support cases for immediate resolution
Experience with network audits, IP space analysis, and address management
Familiarity with PL1 or similarly controlled facilities
Active Security+ CE Certification

In compliance with pay transparency requirements, the salary range for this role in Virginia (Greater D.C. area) is $88,500-$164,500. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English (https://www.e-verify.gov/sites/default/files/everify/posters/EVerifyParticipationPoster.pdf) or Spanish (https://www.e-verify.gov/sites/default/files/everify/posters/EVerifyParticipationPoster.pdf) . For information regarding your Right To Work, please click here for English (https://www.eeoc.gov/sites/default/files/2022-10/22-088_EEOC_KnowYourRights_10_20.pdf) or Spanish (https://www.eeoc.gov/sites/default/files/2022-10/22-088_EEOC_KnowYourRightsSp_10_20.pdf) .

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