Technical Subject Matter Expert - TS/SCI Poly

Parsons Corporation•Quantico, VA

1d•$112,200 - $196,400

About The Position

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.

Requirements

Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, Engineering, or related field; equivalent experience may be substituted
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
An active Top Secret SCI w/Polygraph security clearance is required for this position.

Nice To Haves

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

Responsibilities

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