Senior Network Engineer - TS/SCI

Senior Network EngineerParsons is looking for an amazingly talented Senior Network Engineer to join our team! In this role, you will design, implement, secure, and sustain enterprise network infrastructure supporting classified hybrid environments that span on-premises data center and server room infrastructure as well as multiple cloud environments. You will own the network end to end, from physical switching and routing in secure facilities to the hybrid connectivity that extends the enterprise into the cloud.

This is a hands-on engineering role on a mission-critical program where your work directly contributes to matters of national security.What You'll Be DoingDesign, configure, deploy, and maintain LAN/WAN infrastructure including Cisco routers and switches (Catalyst/Nexus), firewalls, and load balancers across classified on-premises environmentsEngineer and sustain hybrid connectivity between on-premises networks and Microsoft Azure, including VPN gateways, ExpressRoute, virtual network (VNet) architecture, routing, and network security groups in coordination with the cloud engineering teamImplement and maintain routing and switching protocols and services (BGP, OSPF, EIGRP, VLANs, trunking, spanning tree, HSRP/VRRP, QoS)Harden network devices in accordance with DoD STIGs and maintain compliance evidence in support of RMF assessment and authorization activitiesDesign and support air gapped and classified network segments, including secure boundary architectures and cross-domain considerationsPerform network performance monitoring, capacity planning, troubleshooting, and root-cause analysis using enterprise monitoring toolsDevelop and maintain network documentation including topology diagrams, IP address management (IPAM), configuration baselines, and change recordsSupport physical infrastructure efforts including rack layout, cable plant standards, and connectivity for secure facility buildoutsParticipate in change and configuration management processes, design reviews, and security assessments; mentor junior engineersWhat Required Skills You'll BringBachelor's degree in Computer Science, Information Systems, Engineering, or a related discipline; additional years of relevant experience may be considered in lieu of a degree8+ years of progressive network engineering experience designing and operating enterprise LAN/WAN environmentsExpert-level knowledge of TCP/IP, routing and switching (BGP, OSPF, VLANs, trunking), and network security principlesExperience with cloud networking and hybrid cloud (cloud plus physical on-premises network equipment)Cisco IOS-XE experience and scripting on routersNetwork performance tuning, especially in VPN tunnel environmentsHands-on experience configuring and hardening Cisco enterprise network equipment in accordance with DoD STIGsExperience supporting networks in classified, air gapped, or other secure DoD/IC environmentsCisco CCNA/CCNP (Enterprise or Security) or equivalent professional-level network certificationStrong documentation skills, including the ability to create detailed engineering specifications and network diagramsActive TS/SCI security clearanceWhat Desired Skills You'll BringExperience engineering hybrid cloud connectivity to Microsoft Azure or Azure Government (ExpressRoute, VPN gateways, hub-and-spoke VNet design)Experience with next-generation firewalls (Palo Alto, Cisco Firepower) and network access control solutionsFamiliarity with ICD 705 / SCIF infrastructure requirements and secure facility network buildoutsExperience with network automation and infrastructure-as-code (Python, Ansible, Terraform)Knowledge of Type 1 encryption devices (e.g., TACLANE) and classified transport solutionsCCIE, Azure Network Engineer Associate (AZ-700), or CISSP certificationExperience supporting RMF authorization activities and DCSA or other government security assessmentsSecurity Clearance Requirement: An active Top Secret SCI security clearance is required for this position.Salary Range: $103,500.00 - $181,100.00We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle! Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.We truly invest and care about our employee's wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest—APPLY TODAY!Parsons is aware of fraudulent recruitment practices.

To learn more about recruitment fraud and how to report it, please refer to