ME00673-Senior Information System Security Officer (ISSO)

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

• U.S. Citizenship required
• 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 Azure
  • Microsoft 365
  • Entra ID
  • 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.

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.