Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Cyber Security Systems Engineer

VTG

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

Vacancy posted 24 days ago
Similar jobs that could be interesting for youBased on the Cyber Security Systems Engineer in Chantilly, Loudoun County, VA vacancy
  •  ...MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA . The Senior Cyber...  ..., and custom content for specialized cybersecurity systems including Tenable Nessus tools and ServiceNow integration.... 
    Suggested
    Work at office

    MANTECH

    Chantilly, Loudoun County, VA
    -72
  •  ...MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA .   You will help design, implement, and maintain secure and scalable systems and infrastructure aligned to mission and business needs. Your... 
    Suggested
    Full time
    Work at office

    MANTECH

    Chantilly, Loudoun County, VA
    -72
  •  ...MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA . In this role, you...  ...of security-relevant data. Diagnose and resolve system issues that impact stability, performance, or usability.... 
    Suggested
    Full time
    Work at office

    MANTECH

    Chantilly, Loudoun County, VA
    -72
  •  ...seeks a motivated, career and customer-oriented Principal Cyber Security Engineer to join our team in Chantilly, VA . The Principal Cyber...  ...background and knowledge to support the Sponsor’s system accreditation efforts, to include creating Body of Evidence... 
    Suggested
    Work at office

    MANTECH

    Chantilly, Loudoun County, VA
    -72
  •  ...Consulting Enterprise Solutions, INC.  is looking for a Sr. Cyber Security Engineer Description:  Join ICES on a new contract impacting...  ...teams working to design and develop information systems or upgrade legacy systems. Guide and assist product research... 
    Suggested
    Contract work
    For contractors
    Work at office

    ICES

    Chantilly, Loudoun County, VA
    12 days ago
  •  ...Seneca Nation. Seneca Technologies is hiring for a Senior Cyber Security Engineer to join our team in Chantilly, VA. This team member will...  ...Supporting A&A activities related to cybersecurity technologies and system accreditation. Minimum Qualifications: • Bachelor's... 
    Full time
    Work at office
    Flexible hours

    Seneca Holdings LLC

    Chantilly, Loudoun County, VA
    2 days ago
  •  ...Job Description Kavaliro is seeking a Cyber Security Engineer to support a client in Virginia. Job Description: Technical Analysis & System Design Analyze user needs and software requirements to determine design feasibility within time and cost... 
    Permanent employment
    Contract work
    Local area
    Remote work

    Kavaliro

    Chantilly, Loudoun County, VA
    3 days ago
  •  ...Masonbyte is seeking to fill a Cyber Security Engineer position for our customer in Chantilly, VA . At Masonbyte, we strive to provide the...  ...work with the Sponsor and users to identify and develop system requirements taking into account the desired results, hardware... 
    Permanent employment

    iQuasar

    Chantilly, Loudoun County, VA
    1 day ago
  •  ...career and customer-oriented Cyber Subject Matter Expert -...  ...- Scientist shall manage the engineering, integration, and administration...  ...assets consisting of operating systems, applications and network devices...  ...of DoD policy and technical security guidance to information... 
    For contractors
    Work at office
    Flexible hours
    Night shift

    Freedom Technology Solutions Group

    Chantilly, Loudoun County, VA
    2 days ago
  •  ...Cyber Security Engineer Security Clearance: TS/SCI with Fullscope Polygraph required Seeking a Cyber Security Engineer to support an Intelligence...  ...experience applying computer attack methods and system exploitation techniques Demonstrated working knowledge of... 
    Temporary work
    Flexible hours

    Apogee Integration

    Chantilly, Loudoun County, VA
    3 days ago
  •  ...Posting Date 02/10/2026 Security Clearance Required TS/SCI w/...  ...career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA....  ...compliance and security posture across DoD systems. Responsibilities include but are... 
    Full time
    Work at office
    Local area
    Remote work

    ManTech International Corporation

    Chantilly, Loudoun County, VA
    15 hours ago
  •  ...Senior Cyber Security Engineer Abile Group has an exciting and challenging opportunity for a Senior Cyber Security Engineer on a long term...  ...(A&A) activities related to cybersecurity technologies and system accreditation. This position is 100% onsite in Chantilly... 
    Long term contract
    For contractors
    Work at office
    Immediate start

    Abile Group, Inc.

    Chantilly, Loudoun County, VA
    22 hours ago
  •  ...consists of products which protect sensitive co-mingled data. The Cyber Security Engineer will support the work in the form of a group level security...  ..., development, accreditation, and maintenance of complex systems that span all network fabrics. The Sponsor requires... 
    Full time
    Contract work

    STRATASCORP

    Chantilly, Loudoun County, VA
    2 days ago
  •  ...Cyber Security System Engineer Cyber Security Systems Engineers work on all systems and/or projects within the Sponsors organization responsible for providing Network Defense. Qualifications: Education and/or Experience: Requires a minimum of three (3)... 

    TENICA

    Herndon, VA
    22 hours ago
  •  ...Cyber Security Systems Engineer - Full Performance Cyber Security Systems Engineers work on all systems and/or projects within the Sponsors organization responsible for providing Network Defense. Duties, Tasks, and Responsibilities Beta testing when directed... 
    Full time

    Beyond SOF

    Herndon, VA
    20 days ago
  •  ...Cyber Systems Security Engineer Location Manassas, VA (Relocation Assistance Available) Job Category Engineering ID 723 Cyber Systems Security Engineer Gromelski and Associates, Inc. (GAI) partners with prime contractors to provide professional services.... 
    Full time
    For contractors
    Remote work
    Relocation package

    Gromelski & Associates, Inc.

    Manassas, VA
    4 days ago
  •  ...dynamic team at the forefront of national security, providing advanced solutions to...  ...career and customer-oriented Principal Cyber Security Engineer to join our team in Chantilly, VA ....  ...and knowledge to support the Sponsor’s system accreditation efforts, to include... 
    Work at office
    Local area

    ManTech International Corporation

    Chantilly, Loudoun County, VA
    22 hours ago
  •  ...services improve Information System networking performance and compliance...  ..., acquisitions, medical, security, travel, supply chain,...  ...proposals for presentation to engineering review boards for approval....  ...providing the best possible cyber defense capability to protect... 
    Work at office
    Local area

    J5 Consulting

    Chantilly, Loudoun County, VA
    8 days ago
  •  ...Cyber Security Project Engineer Required: Active TS/SCI with Full Scope Polygraph Location: Full-time onsite in Chantilly, VA We are searching...  ...for the accreditation, design, and sustainment of systems that process extremely sensitive data across multiple network... 
    Full time

    Ardent Principles Inc

    Chantilly, Loudoun County, VA
    3 days ago
  •  ...Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize...  ...the hard problems. As an Cyber Security Project Engineer, a typical day...  ...in program management and system integration for complex IT programs... 

    GCI

    Chantilly, Loudoun County, VA
    1 day ago
  •  ...BT-294 - Cyber Security Project Engineer Location: Chantilly, VA (fully on-site, no remote option) **Please do NOT apply if you do not have...  ...with the Authorization & Assessment (A&A) process of all systems in the Sponsor's portfolio, across all network fabrics, for... 
    Remote work

    Bespoke Technologies LLC

    Chantilly, Loudoun County, VA
    2 days ago
  •  ...design, helping organizations modernize systems, streamline operations, and achieve...  ...currently seeking a highly experienced Cyber Security Systems Engineerat the Manager or Subject...  ...Apply agile methodologies to security engineering processes Use vulnerability scanning... 
    Work experience placement
    Flexible hours

    Falls Technology

    Chantilly, Loudoun County, VA
    3 days ago
  •  ...Lead Cyber Security Systems Engineer - Senior Summary: Supervise and direct the engineering effort for the projects identified in this SOW and additional projects approved by the program management. Duties, Tasks, and Responsibilities: Ensure all program activities... 

    Beyond SOF

    Herndon, VA
    22 hours ago
  •  ...Cyber Security Engineer Fairfax, VA Job Summary A Rampant Technologies Cybersecurity Engineer (CSE) is a key resource that is a part...  ...practices for processes and standards that will better the system Perform vulnerability assessments using standardized tools... 
    Work at office

    Rampant Technologies

    Fairfax, VA
    2 days ago
  • $96.25k

    Cyber Security Engineer Job Locations US Job ID 2026-2171 # of Openings 1 Overview Pyramid Systems is seeking an Cyber Security Engineer to support our Federal Customer. Responsibilities Leverage expertise... 
    Contract work
    Work experience placement
    Flexible hours

    Pyramid

    Fairfax, VA
    a month ago
  • $112.92k - $125.28k

     ...Qualifications Bachelor's degree in Engineering, or a related Science or Mathematics field...  ...Department of Defense active Secret security clearance is required . Applicants selected...  ...OBJECTIVES As a Cybersecurity Systems Engineer, you will own the end-to-end RMF... 
    Work at office
    Local area
    Flexible hours

    General Dynamics Mission Systems

    Manassas, VA
    22 hours ago
  • $50 - $69 per hour

     ...Title: Senior Cyber Security Engineer Location: Merrifield, VA Position Type: Contract Compensation Pay Range: $50.00 -...  ...troubleshooting complex issues. The role demands proficiency in system design, networking, and data management technologies.... 
    Full time
    Contract work

    Mitchell Martin

    Fairfax, VA
    2 days ago
  •  ...Cyber Security Engineer/Information System Security Officer (ISSO) Marathon TS is looking to hire Cyber Security Engineers to work a newly awarded contract supporting the Department of Homeland Security (Client) Customs and Border Protection. The Cybersecurity Engineer... 
    Contract work

    Marathon TS

    Ashburn, VA
    22 hours ago
  •  ...Mission Centers. Support information system security topics across multiple organizational...  ...experience) in Computer Science, Systems Engineering, Mathematics, Information Systems, or...  ...technology. Demonstrated experience with cyber risks, exploits, vulnerabilities, and... 
    For contractors

    Arcfield

    McLean, VA
    22 hours ago
  •  ...Our Client is looking for Cyber System Engineer in Fairfax County, VA. Duration: Full-Time/Permanent Required Clearance: TS/SCI w/poly Qualifications...  ...minimum 2+ years of experience in Cyber data and cyber security background Systems Engineer with a general systems... 
    Permanent employment
    Full time

    Maania Consultancy Services

    Fairfax, VA
    3 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Cyber Security Systems Engineer. Be the first to apply!