Senior Cybersecurity Engineer (Zero Trust & Continuous Monitoring)

Govcio LLC•Washington, DC

About The Position

We are seeking a highly experienced Senior Cybersecurity Engineer to support enterprise Zero Trust maturity, continuous monitoring operations, and vulnerability lifecycle management across federal networks. The ideal candidate will have deep hands‑on experience in DHS or DoD environments, proficiency with ACAS/Tenable, Archer GRC, and endpoint security technologies, as well as the ability to lead technical initiatives and mentor junior analysts. This role is critical to strengthening our security posture and ensuring compliance with NIST, ICD 503, CNSS, and RMF frameworks.

Requirements

Bachelor's with 12+ years of cybersecurity engineering experience (or commensurate experience)
12+ years of experience in cybersecurity engineering, continuous monitoring, information assurance, or vulnerability management
Strong understanding of Zero Trust Architecture, risk management, and continuous diagnostics
Hands-on experience with Archer GRC, Tenable SC/ACAS/Nessus, endpoint security tools, and SIEM/monitoring platforms
Demonstrated experience preparing ATO packages and working within NIST/ICD/CNSS frameworks
Experience in federal environments such as DHS, DoD, or Intelligence Community
Ability to communicate complex technical issues to non‑technical leadership
Prior experience developing dashboards and automated cyber metrics
Strong networking fundamentals (Cisco, VLANs, firewalls)
Clearance Required: Active TS/SCI clearance

Nice To Haves

Experience supporting DHS Cybersecurity operations
AWS Cloud experience; AWS certification (or in progress)
Experience designing or deploying Zero Trust security controls
Background in network operations or secure communications engineering

Responsibilities

Lead continuous monitoring operations across enterprise networks, systems, and user accounts using tools such as Archer GRC, Nessus, ACAS, and Tenable SC
Develop and maintain automated cyber risk dashboards, heat maps, and risk registers to support senior‑leadership decision‑making
Engineer and implement Zero Trust-aligned security controls, endpoint protections, and automated monitoring capabilities
Conduct vulnerability scanning, reporting, mitigation tracking, and POAM management across multiple enclaves
Support system Authorization to Operate (ATO) activities, ensuring compliance with NIST 800‑53, ICD 503, and CNSS 1253
Perform root‑cause analysis on findings, develop remediation plans, and collaborate with system owners to reduce risk
Train and mentor cybersecurity analysts on emerging tools, dashboards, and best practices
Participate in Command Cyber Readiness Inspections (CCRI) and internal audits
Maintain accurate asset inventories and support enterprise configuration compliance
Interface with internal customers, contractor partners, and federal leadership on cybersecurity initiatives