Information Systems Security Engineer (ISSE) - Senior with Security

Polaris Consulting Group, Inc.; Fort Belvoir (VA); On-site; USD 80,000 - 120,000; Full time

Job summary

An established industry player is seeking an experienced Information Systems Security Engineer to enhance national security through innovative cybersecurity solutions. This hybrid role requires expertise in systems design, risk management, and vulnerability assessment. The ideal candidate will collaborate with diverse teams to implement robust security measures while adapting to evolving challenges. Join a mission-driven organization that values professional growth and offers competitive compensation and comprehensive benefits. If you're passionate about protecting critical assets and making a difference, this opportunity is perfect for you.

Benefits

Medical, Dental, and Vision Insurance

401(k) with Company Match

Paid Time Off & Holidays

Life & AD&D Insurance

Employee Assistance Program

Short- and Long-Term Disability Insurance

Qualifications

• 9+ years as an ISSE or security-focused engineer with relevant experience.
• Must have a current TS/SCI clearance and DoD 8570 compliance.

Responsibilities

• Create and edit authorization documentation per federal policy.
• Provide security planning and risk management support.

Skills

Cybersecurity

Risk Management Framework (RMF)

Vulnerability Management

Systems Engineering

DoD Accreditation Processes

Information Assurance (IA)

Collaboration

Education

Bachelor's in related field

Master's in related field

High School Diploma or equivalent

Tools

Automated Security Scanning Tools

Vulnerability Management Systems

DISA STIGs and SRGs

Job description

Information Systems Security Engineer (ISSE) - Senior with Security

Polaris is looking for an Information Systems Security Engineer (ISSE). Candidate will be required to understand and document a systems design and implementation that encompass multiple enclaves, to include those with differing data protection/classification requirements. The candidate should understand distributed architectures and cloud–based systems for big data applications. Work is hybrid role out of our customer site in Ft. Belvoir, VA. Must be willing to work on–site 2–3 days/week. Flexibility is essential to adapt to schedule changes as needed.

Essential Job Responsibilities

1. Will create, review and edit authorization documentation for completeness and accuracy in accordance with federal and DoD policy.
2. Thoroughly understand and be able to implement DoD RMF system accreditation processes.
3. Assess use case and operational risk of integrated open source, and GOTS/COTS software components.
4. Will use vulnerability management systems, automated security scanning tools, and system accreditation record systems.
5. Must be able to grasp new concepts, facilitate information exchanges for data gathering, and collaborate with diverse audiences.
6. Will follow established processes where applicable and establish and execute defensible processes where none are prescribed.
7. Provide security planning, assessment, risk analysis, and risk management support.
8. Recommend system–level solutions to resolve security requirements and guide the development team in meeting the security posture requirements.
9. Support the Government in the enforcement of the design and implementation of trusted relationships among external systems and architectures.
10. Must apply existing knowledge of IA policy, procedures, and workforce structure to design, develop, and implement secure networking, computing, and enclave environments.
11. Must be able to interact well with others to complete work.
12. Other duties as assigned.

Minimum Qualifications

1. Security Clearance – A current TS/SCI level U.S. Government clearance with CI Poly is required; U.S. Citizenship required.
2. Experience: 9+ years of experience as an ISSE or security–focused software/systems engineer with large multi–tiered programs and Bachelors in related field; OR 7 years relevant experience with Masters in related field; OR High School Diploma or equivalent and 13 years relevant experience.
3. Experience implementing DoD system accreditation processes (DIACAP acceptable and RMF preferred).
4. A deep understanding of systems engineering and an ability to quickly understand the inner workings of various software and system level applications.
5. DoD 8570 compliance with IAT Level II (SSCP, Security+, CCNA–Security, or GSEC certification).
6. Experience with DISA STIGs and SRGs, vulnerability management systems, mitigation and compliance processes, and reviewing results from automated security scanning tools.
7. The ability to work independently and as part of a team is needed.

Preferred Requirements

1. CISSP–ISSEP is highly desired.

Why Join Polaris?

1. Mission–Driven Work – Protect national security assets through cutting–edge cybersecurity solutions.
2. Growth–Oriented Culture – Work in an environment that fosters innovation, career development, and professional growth.
3. Competitive Compensation & Benefits – Polaris offers competitive salaries, comprehensive benefits, and career advancement opportunities.
4. Commitment to Excellence – Join a team of cybersecurity professionals dedicated to high–impact, mission–focused solutions.

Benefits

1. Mission–Driven Work
2. Medical, Dental, and Vision Insurance
3. 401(k) with Company Match
4. Paid Time Off & Holidays
5. Life & AD&D Insurance
6. Employee Assistance Program
7. Short– and Long–Term Disability Insurance

Polaris Consulting Group, Inc. is an SBA 8(a) certified, Service–Disabled Veteran–Owned Small Business (SDVOSB) headquartered in Alexandria, VA. We provide high–quality cybersecurity, acquisition, and program management solutions to the DoD, IC, and federal agencies. Our professionals combine innovation with expertise to support mission–critical operations. Polaris is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected class. Polaris complies with all federal and state pay transparency laws, and compensation is based on experience, skills, and office location.