CareerPlan

Senior Information Systems Security Officer - ISSO

TST Main Office (13865 Sunrise Valley Dr) - Herndon, VAFull-time$160k–$220k2026-11-02 → 2026-11-11
On-siteSecurity clearance required

Core

Senior Information Systems Security Officer responsible for building, architecting, and accrediting classified information systems while ensuring compliance with Intelligence Community Directive 503 and NIST 800-53 controls.

Role type

Senior IC Information Systems Security Officer (ISSO)

Builds

Classified information systems and security compliance frameworks

Domain

Defense/Intelligence Community (IC) cybersecurity and regulatory compliance

Required skills

Intelligence Community Directive 503 compliance, NIST 800-53 controls, Risk Management Framework (RMF) process, STIG checklists, POA&M management, Continuous Monitoring, policy creation, data transfer review, Windows 10/11 administration, Active Directory/Group Policy, Red Hat Enterprise Linux, Ubuntu Linux, VMWare vSphere/ESXi, Splunk, ServiceNOW, Talon, DCSA Assessment and Authorization Process Manual, Joint SAP Implementation Guide

Preferred skills

Linux+ certification, RHCSA, Microsoft Administrator certifications, Windows/Linux environment experience

Technologies

Splunk, ServiceNOW, Talon, Windows 10/11, Active Directory, Group Policy, Red Hat Enterprise Linux, Ubuntu Linux, VMWare vSphere, ESXi

Responsibilities

Build and architect classified information systems, achieve and maintain accreditation for assigned programs, serve as security liaison between program, customer, and security team, advise ISSM on RMF process, complete STIG checklists and POA&Ms, review data transfers, perform weekly/bi-weekly/monthly audits, conduct Continuous Monitoring, create and maintain security policies

Seniority

Senior, hands-on IC