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Information System Security Engineer Security Clearance

Job in Fort Belvoir, Fairfax County, Virginia, 22060, USA
Listing for: Metronome
Full Time, Part Time position
Listed on 2026-01-30
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 150000 - 175000 USD Yearly USD 150000.00 175000.00 YEAR
Job Description & How to Apply Below
Position: Information System Security Engineer with Security Clearance

Overview

Job Title:

Information Systems Security Engineer (ISSE)

Location:

Ft. Belvoir, VA — 60% onsite

Clearance:
Active TS/SCI CI Poly

Employment Type:

Full-Time

Education:

Bachelor’s degree in a related field with 9+ years of ISSE experience; OR Master’s degree with 7+ years of relevant experience; OR High School Diploma (or equivalent) with 13+ years of relevant experience

Salary: 150k to 175k

Benefits:
Health, dental, vision, 401(k), PTO, and more

Application:
Apply directly or submit your resume through Enlighten's careers portal

Key Responsibilities
  • Create, review, and edit system authorization documentation for completeness and accuracy in accordance with federal and DoD policies
  • Implement and support DoD Risk Management Framework (RMF) system accreditation processes
  • Assess operational and use-case risks for integrated Open Source, GOTS, and COTS software components
  • Utilize vulnerability management systems, automated security scanning tools, and system accreditation record systems
  • Provide security planning, assessment, risk analysis, and risk management support
  • Recommend system-level solutions to meet security requirements and guide development teams in achieving required security posture
  • Support the Government in enforcing trusted relationships among external systems and architectures
  • Apply IA policies, procedures, and workforce frameworks to design, develop, and implement secure networking, computing, and enclave environments
  • Facilitate information exchanges, gather technical data, and collaborate with diverse technical and non-technical stakeholders
Required Skills
  • 9+ years of experience as an ISSE supporting large, multi-tiered DoD or Government programs (experience requirements may vary by education level)
  • Hands-on experience implementing DoD system accreditation processes (DIACAP acceptable; RMF preferred)
  • Working knowledge of TCP/IP protocols, computer architectures, and network topologies
  • Experience with DISA STIGs and SRGs, vulnerability management systems, mitigation, and compliance processes
  • Experience reviewing and analyzing results from automated security scanning tools
  • Strong ability to work independently and as part of a team
  • Ability to operate effectively in a hybrid work environment with schedule flexibility
  • DoD 8570 IAT Level II certification (Security+, SSCP, CCNA-Security, or GSEC required)
Desired Skills
  • CISSP-ISSEP certification
About Metronome, LLC

Metronome is a spark that ignites passion for our customers and each other. We offer professional services to Government customers that keep projects pulsing. We believe in taking care of people so they can put their best foot forward to support the mission.

Background Screening/Compliance

Background Screenings:
Successful completion of a Background Check will be required as a condition of hire.

Benefits

Metronome offers a comprehensive benefits package that reflects our commitment to creating a diverse and supportive workplace. Benefit eligibility is determined on the type of position (full-time, part-time, temporary). Benefits include, but are not limited to, Medical, Vision & Dental Insurance, Life Insurance, Paid Time-Off & Company Paid Holidays, Personal Development & Learning Opportunities.

Application Process

Please follow all instructions carefully. Errors or omissions may affect your consideration for employment.

Select Create Profile and Apply to Requirement
• Complete your Profile and Answer the Questionnaire
• Upload a current resume
• Complete the Online Application and Submit

Evaluation Process

Metronome will evaluate applicants based on how well they meet the qualifications of the position. Your completed application (including questionnaire, resume, and online application) will be used to determine your eligibility and how well you meet the qualifications for this position. Your responses to the questionnaire may be compared to your resume and application; if either your resume or application contradicts or does not support your responses, you will disqualify yourself and not receive further consideration for this job.

Equal

Employment Opportunity

Metronome does not discriminate in employment on the basis of race, color, religion, sex…

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