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Mid-Level OT/IT Network & Cybersecurity Engineer

Leidos McLean, VA

McLean, VA

Today

$87k - $157k/yr Full time Certificate Management Engineer Industrial Cybersecurity

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Job Description

Leidos’ Saxton Lab Team at FHWA STOL is seeking a mid-level OT/IT Network & Cybersecurity Engineer to own operational technology and IT network/testbed infrastructure, along with the lab’s OT/ICS cybersecurity posture. This role supports connected-vehicle testing and demonstrations in research environments where operational safety and reproducibility are essential.

Role Location and Employment Details

Location: McLean, VA (onsite)
Experience: 4+ years
Education: Bachelor’s degree (or technical associate’s degree) in a related technical field

Compensation

Annual salary range: USD 87,100 - 157,450
Pay range noted: $110,000 – $130,000 per year (commensurate with experience)

Key Responsibilities

Design, build, and operate OT/IT networks for testbeds, including VLAN segmentation, firewall/ACL, and routing; support wireless distribution and fiber/copper cabling; and manage backhaul to field-deployed roadside units (RSUs), edge nodes, and remote sites (C-V2X PC5/Uu, 5G NR, and Wi-Fi).
Own day-to-day operations for the testbed and Smart Garage, including commissioning and maintaining RSUs, onboard units (OBUs), signal controllers, edge platforms, and network hardware; resolve connectivity, latency, protocol, and hardware issues across lab and field.
Maintain accurate network documentation, ensure precise time synchronization using PTP/IEEE 1588, NTP, and GPS, and support reliable edge-to-analytics data movement to enable reproducible experiment results.
Establish and maintain the lab-wide OT security posture using relevant frameworks such as NIST SP 800-82 and NIST SP 800-53, applying judgment for research needs rather than blanket compliance; implement defense-in-depth segmentation using the Purdue Model or IEC 62443 (including IT/OT DMZ and bastion hosts with filtering).
Stand up and operate V2X security capabilities including PKI and SCMS credentialing, and perform OT-appropriate vulnerability assessment and intrusion or anomaly monitoring, coordinating remediation with program security.
Build and maintain security-enabling environments for transportation cybersecurity research, and keep incident-response procedures and cybersecurity reviews current.
Translate concurrent R&D requirements into testbed configurations and instrumentation, and keep environments in known, repeatable states for valid outcomes.
Support test scenarios, in-vehicle and roadside instrumentation, and the technical preparation and execution of lab tours, live demonstrations, and field testing.
Support daily operations with a safety-first approach, ensuring IT, OT, and cybersecurity activities follow safety procedures during routine operations, testing, and special events, including change-control for reconfigurations, deployments, and firmware updates.
Treat OT cybersecurity as safety-critical, applying domain-specific safety practices (RF, electrical/cabling, and on-road or closed-course protocols) and coordinating with facilities on power, environmental controls, and cable management.

Required Qualifications

Ability to work full-time on-site in McLean, VA.
Ability to obtain and maintain a Public Trust clearance (requires three years’ continuous U.S. residency) and a valid driver’s license.
Bachelor’s degree in Electrical/Computer Engineering, Network Engineering, Computer Science, IT, or a related technical field with 4–8 years of hands-on experience in OT/IT networking, R&D, industrial, or field-deployed systems, or a technical associate’s degree with 7+ years (equivalent demonstrated experience considered in lieu of a degree).
4+ years designing, deploying, and administering OT or IT/OT converged networks, including managed switching/routing, VLAN segmentation, VPN, and firewall rules, with exposure to OT/ICS or research-testbed environments with field-deployed devices.
Strong infrastructure fundamentals in fiber/copper cabling, network/RF diagrams, and time synchronization (NTP, PTP/IEEE 1588, GPS), plus comfort using Linux for device administration and scripting.
Working knowledge of C-V2X (PC5/Uu) or the ability to acquire it quickly.
Holistic OT/ICS security knowledge, including applying appropriate controls using NIST SP 800-82/800-53, Purdue Model, or IEC 62443, with judgment for a transportation research environment; familiarity with the OT threat landscape and PKI/SCMS for V2X credentialing.
Awareness of cybersecurity’s relationship to functional safety in automated systems.
Strong written and verbal communication for documentation and stakeholder briefings, with the ability to manage competing priorities in a fast-paced environment.
Ability to perform hands-on work in lab, garage, and field settings (lifting up to 50 lbs) and occasional off-hours support for testing and events with reasonable scheduling flexibility.

Technologies and Tools (Relevant)

Networking and infrastructure: VLAN segmentation, firewall/ACL, routing, wireless distribution, fiber/copper cabling, VPN
Connected-vehicle and communications: C-V2X PC5/Uu, 5G NR, Wi-Fi, SAE J2735, SAE J3161
Time synchronization: PTP/IEEE 1588, NTP, GPS
OT security frameworks and models: NIST SP 800-82, NIST SP 800-53, IT/OT DMZ, bastion hosts, Purdue Model, IEC 62443
V2X security: PKI, SCMS credentialing
Monitoring and security practices: vulnerability assessment, intrusion/anomaly monitoring
Administration: Linux
OT monitoring tools (listed): Claroty, Dragos, Nozomi, Savari
RSU platform experience (listed): Cohda Wireless, Commsignia, Kapsch
Training and certifications (listed): SANS ICS515, CCNA, CCNP, Security+, CySA+, GICSP

Benefits

Health, dental, and vision insurance
Retirement plan
Paid time off

Preferred Qualifications

Certifications such as CCNA/CCNP, Security+, CySA+, or GICSP; OT/ICS security training (e.g., SANS ICS515).
Hands-on RSU platform experience (Savari, Cohda Wireless, Commsignia, Kapsch) with SCMS enrollment.
C-V2X (PC5) and 5G NR.
Experience with SAE J2735 and SAE J3161 (C-V2X).
Experience using OT monitoring tools (Claroty, Dragos, Nozomi).
Experience supporting federally funded R&D or government contracting.

Posting Date

Original posting: July 8, 2026

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