# Mid-Level OT/IT Network Engineer (Transportation) **Company**: Leidos **Location**: McLean, VA **Work arrangement**: onsite **Experience**: mid **Job type**: full-time **Salary**: $110,000 – $130,000 per year **Category**: Engineering **Industry**: Technology **Apply**: https://leidos.wd5.myworkdayjobs.com/en-US/External/job/McLean-VA/Mid-Level-OT-IT-Network-Engineer--Transportation-_R-00192273?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply **Canonical**: https://yubhub.co/jobs/job_5115edaf-496 ## Description The Health and Services Sector of Leidos is seeking an innovative, hands-on engineer to join our Saxton Lab Team as a Mid-Level OT/IT Network Engineer! Our team operates the Federal Highway Administration's (FHWA) Saxton Transportation Operations Laboratory (STOL), a USDOT research lab. STOL is a research and development center advancing the science of connected and automated vehicle technologies and digital roadway infrastructure. The Mid-Level OT/IT Network Engineer is a hands-on owner of STOL's network and connected-vehicle testbed infrastructure , designing, administering, securing, documenting, and troubleshooting the networks connecting lab systems, field sites, roadside infrastructure, edge platforms, and connected-vehicle devices. **Responsibilities** ### Network Engineering & Administration - Design, configure, administer, and troubleshoot switches, routers, firewalls, wireless infrastructure, VPNs, and remote-site connectivity. - Manage Layer 2/Layer 3 networking, including VLANs, routing, subnetting, ACLs, NAT, segmentation, and IP addressing. - Administer supporting network services, including DNS, DHCP, NTP, PTP/IEEE 1588, GPS timing, and remote connectivity. - Monitor network health, availability, latency, and performance; troubleshoot using Wireshark/tcpdump, SNMP, syslog, and packet captures. - Maintain network configurations, backups, firmware, certificates, device inventories, IP plans, port maps, and network diagrams. - Install and troubleshoot fiber/copper infrastructure and support connectivity to field-deployed RSUs, edge nodes, traffic systems, and remote sites. - Plan and execute network changes, upgrades, and equipment replacements using established change-control practices. ### Connected-Vehicle Testbed Operations - Operate and maintain STOL's Smart Garage and connected-vehicle testbeds, including RSUs, OBUs, signal controllers, edge platforms, and network-connected research equipment. - Configure and troubleshoot C-V2X PC5/Uu, 5G NR, Wi-Fi, Ethernet, fiber, and cellular/backhaul connectivity. - Translate research requirements into network and testbed configurations and maintain environments in known, repeatable states. - Support laboratory experiments, field testing, demonstrations, and troubleshooting across network, device, timing, protocol, and application layers. ### Network Security, ATO & Vulnerability Management - Maintain the security posture and documentation for the network's ATO and ongoing RMF activities. - Develop and keep current security/network architecture and boundary diagrams, data-flow diagrams, inventories, and other authorization artifacts. - Develop, maintain, and track network-related Plans of Action and Milestones (POA&Ms), coordinating remediation and evidence collection for closure. - Review vulnerability findings affecting OS, network and edge infrastructure; implement or coordinate remediation through patches, firmware upgrades, configuration changes, or compensating controls. - Implement network security controls including segmentation, firewall/ACL policies, VPNs, secure administrative access, and IT/OT boundary protections. - Partner with cybersecurity, ISSO/ISSM, and program personnel on assessments, continuous monitoring, and applicable NIST SP 800-53/800-82 requirements. ### Operational Support & Safety Compliance - Support testing on concurrent R&D projects, laboratory demonstrations, field deployments, and high-visibility stakeholder events. - Apply appropriate safety practices when working with network equipment, RF systems, vehicles, cabling, and roadside infrastructure. - Uphold the lab's safety posture across routine operations, testing, and special events, and partner with facilities on power, environmental controls, and cable management. **Requirements** - Bachelor’s degree in network engineering, Information Technology, Electrical/Computer Engineering, Computer Science, or a related technical field with 4–8 years of relevant experience , OR a technical associate's degree with 7+ years. - 4+ years of hands-on experience designing, configuring, administering, and troubleshooting OT, industrial, laboratory/testbed, or field-deployed networks. - Strong knowledge of TCP/IP, switching, routing, VLANs, subnetting, ACLs, NAT, VPNs, firewalls, and network segmentation. - Knowledge of fiber/copper infrastructure, network diagrams, IP addressing, DNS/DHCP, and time synchronization technologies (NTP, PTP/IEEE 1588, GPS). - Comfort administering Linux-based devices and using Linux for troubleshooting and basic scripting. **Benefits** - Salary range: $110,000 – $130,000 per year (commensurate with experience) - Comprehensive benefits, including health, dental, and vision insurance, retirement plan, and paid time off ## Skills ### Required - TCP/IP - switching - routing - VLANs - subnetting - ACLs - NAT - VPNs - firewalls - network segmentation - Linux ### Nice to have - CCNA - CCNP - Security+ - Cisco - Juniper - Aruba - Fortinet - Palo Alto - C-V2X PC5/Uu - 5G NR - SAE J2735/J3161 --- Source: [Apply at leidos.wd5.myworkdayjobs.com](https://leidos.wd5.myworkdayjobs.com/en-US/External/job/McLean-VA/Mid-Level-OT-IT-Network-Engineer--Transportation-_R-00192273?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)