Cyber Security Systems Engineer

VTG Defense; Chantilly (VA); On-site; USD 120,000 - 160,000; Full time

Job summary

VTG Defense seeks a Cyber Security Systems Engineer in Chantilly, VA, to serve as the primary liaison between technical teams and security stakeholders. You will translate complex concepts into clear security requirements and support A&A activities across multiple environments.

The role requires a Top Secret clearance with a polygraph and 11+ years of experience, with expertise in RMF/ICD 503, SSPs, and security documentation.

Qualifications

• Top Secret Clearance with Polygraph required.
• Minimum experience of 11 years in security engineering or ISSE roles.
• Experience supporting RMF/ ICD 503 A&A processes and artifacts.

Responsibilities

• Serve as liaison between technical teams and security stakeholders, translating concepts into security documentation and requirements.
• Support complex network environments with multiple enclaves and shared infrastructure.
• Document security controls implementations and gather artifacts for RMF and ICD 503 A&A activities.
• Develop and maintain SSPs and CONOPS with tools like Greenlight.
• Collect A&A documentation including CPs, GUGs, PUGs, and SOPs.
• Support SCA/ISSO/M during A&A reviews and assessments.
• Track and manage POA&Ms, mitigation status, and evidence collection.
• Coordinate with engineering teams and stakeholders to gather required security artifacts.
• Assist with ATD, IATT, and ATO processes and approvals.
• Monitor A&A lifecycle across projects, including re-accreditation timelines.

Skills

Top Secret Clearance

11+ years experience

Effective communication

cross-team collaboration

RMF & ICD 503 familiarity

Security documentation

Education

Bachelor's degree preferred

Master's degree preferred

Tools

Greenlight

RoadRunner

Rapid7

Splunk

WebInspect

AppDetective

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