ME00673-Senior Information System Security Officer (ISSO)

Momentum Engineering; Washington (District of Columbia); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Paid holidays

3 weeks PTO

Company sponsored health plan

Dental, Vision, Life Insurance

STD/LTD

Job summary

Momentum Engineering, Inc. in Washington, DC seeks a Senior Information System Security Officer (ISSO) to support Federal cybersecurity operations. You will work with Lead ISSO, ISSM, System Owners, and stakeholders on RMF execution, authorization maintenance, and vulnerability management.

Minimum qualifications include a Bachelor’s degree and 5+ years of cybersecurity experience with 3+ years Federal RMF activities. Certification in Security+, CISSP, CISM or CGRC is preferred.

Qualifications

• Bachelor’s degree or higher in a relevant field and ability to obtain/maintain Tier 4 High-Risk Public Trust
• 5+ years of cybersecurity experience, including RMF
• 3+ years supporting Federal cybersecurity or RMF activities
• Experience developing and maintaining SSPs and authorization packages
• Experience with continuous monitoring, vulnerability management, audits, assessments, and compliance
• Familiarity with Federal cybersecurity requirements and NIST guidance

Responsibilities

• Support RMF activities throughout the authorization lifecycle
• Maintain SSPs, POA&Ms, control implementation statements, and related 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 to 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

Education

Bachelor's degree in Cybersecurity, IT, CS, Information Systems, or related field

Security+

CISSP

CISM

CGRC

CAP

Tools

ServiceNow

Splunk

Tenable

Qualys

Microsoft 365

Job description

ME00673-Senior Information System Security Officer (ISSO)

Momentum Engineering Washington, District of Columbia, United States

About this position

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.