ME00673-Senior Information System Security Officer (ISSO)

Momentum Engineering, Inc.; Washington (District of Columbia); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

11 paid holidays

3 weeks PTO

Company medical plan

Dental

Vision

Life insurance

STD/LTD

Job summary

Momentum Engineering, Inc. is seeking a Senior Information System Security Officer (ISSO) to support Federal cybersecurity operations focused on RMF execution, continuous monitoring, and governance.

You will work with the Lead ISSO, ISSM, System Owners, and cybersecurity stakeholders to ensure robust security across assigned systems. The role requires a Bachelor’s degree in a related field, 5+ years of cybersecurity experience, and 3+ years supporting Federal RMF activities.

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, Information Systems or related field.
• 5+ years of cybersecurity experience.
• 3+ years supporting Federal cybersecurity or RMF activities.
• Experience with SSP development and authorization package maintenance.
• Experience with continuous monitoring and vulnerability management.
• Experience with audits, assessments, and compliance activities.
• Familiarity with Federal cybersecurity requirements and NIST guidance.

Responsibilities

• Support RMF activities throughout the authorization lifecycle.
• Maintain SSPs, POA&Ms, control implementation statements, and support cybersecurity documentation.
• Perform continuous monitoring activities and security posture reviews.
• Support vulnerability management analysis, tracking, and remediation coordination.
• Prepare and update authorization package artifacts.
• Conduct security impact analyses for changes affecting supported systems.
• Support audit readiness reviews and assessment preparation activities.
• Coordinate evidence collection and artifact management.
• Maintain cybersecurity records, repositories, and documentation.
• Participate in governance forums and security working groups.
• Track corrective actions and POA&M status through closure.
• Provide system-level cybersecurity guidance and recommendations.

Skills

Tier 4 Public Trust eligibility

Cybersecurity experience

RMF / Federal cybersecurity

SSP development

Continuous monitoring

Vulnerability management

Audit readiness & assessments

Familiarity with NIST guidance

Education

Bachelor's degree in Cybersecurity/IT/CS/IS

Tools

ServiceNow

Splunk

Tenable

Qualys

Microsoft 365

GRC platforms

Job description

ME00673-Senior Information System Security Officer (ISSO)

Momentum Engineering, Inc. fosters an employee-centric culture. Our strength lies in our people. With a high percentage of employees holding advanced degrees in engineering, computer science, and related disciplines, we bring deep technical expertise to every mission. Our team includes professionals with security clearances and full-scope polygraphs, ensuring trusted, secure support for the most sensitive national security initiatives. Additionally, our workforce is equipped with industry-leading certifications, demonstrating a commitment to continuous learning and excellence. Most importantly, our exceptional employee retention rate reflects a culture of professional growth, mission focus, and dedication—ensuring long-term stability and expertise for our customers’ critical needs.

Job Summary

• Seeking experienced Senior Information System Security Officers (ISSOs) to support Federal cybersecurity operations focused on continuous monitoring, RMF execution, authorization maintenance, vulnerability management, audit readiness, and cybersecurity governance
• Senior ISSOs serve as cybersecurity subject matter experts supporting assigned systems while working closely with Lead ISSO, ISSM, System Owners, and other cybersecurity stakeholders

Primary Responsibilities

• Support RMF activities throughout the authorization lifecycle
• Maintain SSPs, POA&Ms, control implementation statements, and support cybersecurity documentation
• Perform continuous monitoring activities and security posture reviews
• Support vulnerability management analysis, tracking, and remediation coordination
• Prepare and update authorization package artifacts
• Conduct security impact analyses for changes affecting supported systems
• Support audit readiness reviews and assessment preparation activities
• Coordinate evidence collection and artifact management
• Maintain cybersecurity records, repositories, and documentation
• Participate in governance forums and security working groups
• Track corrective actions and POA&M status through closure
• Provide system-level cybersecurity guidance and recommendations

Required Qualifications

• Ability to obtain and maintain a Tier 4 High-Risk Public Trust
• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, Information Systems, or related field
• 5+ years of cybersecurity experience
• 3+ years supporting Federal cybersecurity or RMF activities
• Experience supporting SSP development and authorization package maintenance
• Experience with continuous monitoring and vulnerability management
• Experience supporting audits, assessments, and compliance activities
• Familiarity with Federal cybersecurity requirements and NIST guidance

Desired Qualifications

• One or more of the following:
• Security+
• CGRC
• CISSP
• CAP
• CISM
• GSEC
• Desired technical experience:
• CSAM
• ServiceNow
• Splunk
• Tenable
• Qualys
• Microsoft 365
• Governance, Risk, and Compliance (GRC) platforms

Exempt hourly position. 11 paid holidays, minimum of 3 weeks PTO, company sponsored group medical plan, company paid dental, vision, life insurance, and STD/LTD plans. Salary is dependent upon the candidate’s experience and qualifications.