Cyber Security Systems Engineer

VTG; Chantilly (VA); On-site; USD 140,000 - 200,000; Full time

Job summary

VTG is seeking a Cyber Security Systems Engineer in Chantilly, VA to support customer Division level A&A projects across multiple teams. The role requires a TS clearance with polygraph and hands-on experience in RMF, ICD 503, and security documentation.

You will coordinate with engineering, security, and program stakeholders to gather artifacts, develop SSPs/CONOPS using Greenlight, and track POA&Ms while advancing ATO approvals across complex, shared networks.

Qualifications

• Top Secret Clearance with Polygraph required.
• 11+ years of ISSE/security experience in enterprise environments.
• Experience with RMF and ICD 503-based A&A processes.
• Ability to translate technical concepts into security documentation.
• Coordination across engineering, security, and program stakeholders.

Responsibilities

• Serve as liaison between technical teams and security stakeholders, translating concepts into documentation.
• Support complex networks with shared infrastructure and multiple enclaves.
• Document security control implementations and gather artifacts for RMF/ICD 503 A&A.
• Develop SSPs and CONOPS using Greenlight.
• Collect A&A docs including CP, GUG, PUG, and SOPs.
• Assist SCA and ISSO/M during A&A reviews and assessments.
• Track POA&Ms, mitigation status, and evidence.
• Coordinate with engineers, contractors, and stakeholders for required artifacts.
• Navigate A&A processes to support ATD, IATT, and ATO approvals.
• Monitor lifecycle status across projects including re-accreditation timelines.

Skills

Multi-tasking

Communication

Facilitation

Education

Bachelor's or Master's degree

Tools

Greenlight

RoadRunner

Rapid7

WebInspect

AppDetective

Splunk

AWS

Microsoft Azure

VMware

VDI

Office 365

Job description

Overview

We are actively seeking Cyber Security Systems Engineers to support the customer's Division level A&A projects which has several Branches within it. The A&A projects are therefore at various levels within the customer organization depending upon which team is responsible for initial development and accreditation vs. long term Operations and Maintenance support. Bachelor's or Master's Degree are preferred in one or more discipline but can be waived if previous direct ISSE support to this customer's agency.

What will you do?

• Serve as the primary liaison between technical teams and security stakeholders, translating complex technical concepts into clear security documentation and requirements
• Support multiple complex network environments involving shared infrastructure and multiple security enclaves
• Document security control implementations and gather supporting artifacts for RMF and ICD 503 Assessment & Authorization (A&A) activities
• Develop and maintain System Security Plans (SSPs) and CONOPS documentation using tools such as Greenlight
• Collect and compile A&A documentation including Contingency Plans (CP), General User Guides (GUG), Privileged User Guides (PUG), and Standard Operating Procedures (SOPs)
• Support Security Controls Assessors (SCA) and Information System Security Officers/Managers (ISSO/M) during A&A reviews and assessments
• Track and manage Plans of Action and Milestones (POA&Ms), including mitigation status and evidence collection
• Coordinate with engineering teams, contractors, and stakeholders to gather required security documentation and artifacts
• Navigate customer A&A processes to support Authorization to Develop (ATD), Interim Authority to Test (IATT), and Authority to Operate (ATO) approvals
• Monitor and track A&A lifecycle status across multiple projects, including re-accreditation and extension timelines

Do you have what it takes?

Must have a Top Secret Clearance with Polygraph

Minimum Of Eleven (11) Years' Experience.

• Strong multi-tasking, communication, and facilitation skills with the ability to work across technical and non-technical audiences
• Experience working in complex enterprise environments with shared networks and multiple security enclaves
• Ability to understand and communicate technical implementation details in security and compliance terms
• Experience supporting RMF and ICD 503-based Assessment & Authorization (A&A) processes
• Experience developing and maintaining security documentation and compliance artifacts
• Familiarity with coordinating across engineering, security, and program stakeholders in a structured environment

Preferred Education, Experience, & Skills

• Prior experience as an ISSE supporting the customer environment
• Prior experience as an ISSO supporting enterprise security operations
• Experience with security and vulnerability management tools such as Greenlight, RoadRunner, Rapid7, WebInspect, AppDetective, and Splunk
• Experience working in cloud environments (AWS, Microsoft Azure, or similar platforms)
• Experience with virtualization technologies such as VDI and VMware
• Basic understanding of cloud security controls, PKI, STIG compliance, vulnerability management, and SecDevOps practices
• Certifications such as CISSP or GSLC
• AWS Certified Security - Specialty certification
• Proficiency with Microsoft Office 365 tools, including Excel for tracking and reporting