Technical Subject Matter Expert - TS/SCI Poly

In a world of possibilities, pursue one with endless opportunities. Imagine Next!   At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.   Job Description: The Technical Subject Matter Expert provides technical support for government-directed virtual operations requiring secure, scalable, and policy-compliant infrastructure. This role supports the design, configuration, deployment, monitoring, and sustainment of capabilities used to enable global virtual access, operational resilience, and infrastructure abstraction in accordance with applicable law, policy, and contractual requirements. The ideal candidate has experience with secure network architecture, proxy and relay infrastructure, virtualized environments, cloud-hosted services, traffic management, identity separation measures, and operational support in controlled government environments. This role works closely with engineers, analysts, operators, cybersecurity personnel, and program leadership. What You'll Be Doing: Design, build, configure, and maintain infrastructure supporting authorized virtual operations Deploy and sustain virtual private servers, remote access nodes, proxy layers, routing solutions, and segmented environments Support network configurations including VPNs, gateways, DNS management, traffic routing, and secure remote connectivity Ensure systems operate in accordance with cybersecurity controls, government policies, contract requirements, and operational approval frameworks Perform system health checks, logging review, performance tuning, patching, and lifecycle maintenance Diagnose and resolve network, infrastructure, access, latency, and service delivery issues across distributed environments Create and maintain technical documentation, standard operating procedures, architecture diagrams, and configuration baselines Coordinate with cross-functional teams including program managers, cyber defenders, system administrators, and mission stakeholders Identify technical risks, infrastructure weaknesses, and operational constraints; recommend mitigations Provide technical guidance and user support for approved personnel leveraging services What Required Skills You'll Bring: Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, Engineering, or related field; equivalent experience may be substituted and a minimum of 8 years of total related experience Minimum 7+ years of relevant technical experience in network engineering, systems administration, cyber infrastructure. Experience with virtual infrastructure, cloud platforms, proxy technologies, secure routing, and remote access solutions Knowledge of TCP/IP networking, DNS, VPNs, firewalls, NAT, and segmentation principles Experience administering Linux and/or Windows systems in enterprise or mission environments Familiarity with logging, monitoring, configuration management, and infrastructure hardening Ability to troubleshoot distributed technical environments and maintain service availability Experience working in classified, regulated, or government-controlled operational settings preferred Strong written and verbal communication skills Ability to work independently and within a team under mission-driven timelines What Desired Skills You'll Bring: Experience supporting infrastructure abstraction or identity-separated technical environments for government customers Familiarity with virtualization technologies such as VMware, KVM, VirtualBox, or containerized services Experience with commercial cloud and hosting providers in secure, compliant architectures Knowledge of scripting or automation using Bash, PowerShell, Python, or similar languages Understanding of operational security, auditing, access control, and multi-layered technical risk reduction Relevant certifications such as Security+, Network+, CySA+, CEH, CISSP, CCNA, or comparable credentials Prior experience supporting federal, defense, intelligence, or law enforcement contracts Security Clearance Requirement: An active Top Secret SCI w/Polygraph security clearance is required for this position.​ This position is part of our Federal Solutions team. The Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation's most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now. Salary Range: $112,200.00 - $196,400.00 We 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   https://www.parsons.com/fraudulent-recruitment/ .