Information System Security Officer (ISSO)
3/23/2026
The ISSO acts as the principal advisor to system owners on cybersecurity compliance, risk, and operations, ensuring systems maintain Authorization to Operate (ATO) and adhere to federal requirements. Key duties involve implementing and documenting security controls per NIST SP 800-53, managing the full RMF lifecycle, and developing necessary security documentation like SSPs and POA&Ms.
Salary
110000 - 120000 USD
Working Hours
40 hours/week
Company Size
201-500 employees
Language
English
Visa Sponsorship
No
Description
Salary: $110,000 - $120,000/year
The ISSO provides system-level security expertise and serves as the principal advisor to system owners on cybersecurity compliance, risk, and operations. This role ensures systems maintain Authorization to Operate (ATO) and adhere to Department and federal requirements.
Duties and responsibilities include:
- Implement and document security controls in accordance with NIST SP 800-53 and RMF.
- Manage the full RMF lifecycle, including security categorization, control selection, implementation, testing, and continuous monitoring.
- Develop, maintain, and submit security documentation including SSPs, SARs, and POA&Ms.
- Conduct security scans, vulnerability assessments, and compliance testing.
- Support internal and external audits by providing documentation and evidence.
- Identify, document, and track vulnerabilities and remediation plans.
- Serve as the central point of contact for system-level cybersecurity matters.
Requirements
- 5+ years of ISSO or equivalent cybersecurity role experience.
- In-depth knowledge of NIST RMF, FISMA, and CISA directives.
- Proficiency with vulnerability management and risk assessment tools.
- Strong documentation and reporting skills.
Clearance Requirement: Active Secret clearance required.
The salary range for this position depends upon multiple factors including location, the individual's knowledge, skills, competencies, and experience, and contract-specific budget constraints and organizational requirements.
Gunnison Consulting Group's total compensation package also includes bonus and profit-sharing opportunities, depending on company and employee performance. Available employee benefits include:
- 3 weeks of Personal Leave your first year
- 11 paid Holidays each year
- 5 days of Flexible Time Off each year
- 401(k) company match at 50% up to 10% of your salary
- Medical, Dental and Vision Insurance
- Life and Disability Insurance
- Public Transportation Subsidies
- Certifications and Training Allowance - $2,500/year!
Why Join Gunnison?
- Gunnison takes on ambitious projects. We target fun, challenging work that requires creative thinking and innovation.
- Quality is our top priority.
- Gunnison employee benefits meet or exceed what other companies in the Washington, D.C. metropolitan area offer.
- There is a great sense of camaraderie at Gunnison. This is an atmosphere we will maintain as we continue to grow.
- We are growing rapidly and the opportunity for individual professional growth with Gunnison is outstanding.
- We hire for careers at Gunnison, not to fill a position.
Equal Opportunity/Affirmative Action Employer. Must be eligible for employment in the United States. We are unable to sponsor candidates at this time.
In 1994 Gunnison began serving the greater Washington, D.C. metro area, focused on tackling our customers' most ambitious technology projects. By creating a culture dedicated to enabling our customers and employees to achieve more than they ever thought they could, the company has thrived for over 25 years.
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