Senior Cybersecurity ISSE | RMF & OT Security Lead

Alpha Omega Integration; Vienna (VA); Hybrid; USD 135,000 - 195,000; Full time

Benefits offered by this job

PTO 15 days including parental/miliary

11 federal holidays

Health and Dental Insurance (employer‑

Life Insurance

401(k) with match

FSA/HSA

Tuition & Professional Development Re"

Job summary

Alpha Omega Integration is seeking a senior Cybersecurity Subject Matter Expert (SME) to lead RMF implementation, ISSE activities, and security compliance across DoD/USCG environments. Hybrid work with Washington, DC and Northern Virginia locations.

Requires active SECRET clearance and DoD 8570 certifications. The role provides senior technical leadership, mentoring, and engagement with Government management, focusing on risk-informed security, continuous monitoring, and incident response

Qualifications

• Minimum 8 years of related cybersecurity experience in a technical field related to this labor category.
• Active professional certification (DoD 8140/8570 qualifying): CISSP-ISSAP or CISSP-ISSEP.
• Certification must be current prior to the start of performance; waivers will not be granted.
• Active final SECRET personnel security clearance (Tier 3 / SF-86 investigation) with the ability to maintain eligibility for the duration of the task order; execution of a Classified Information Non-Disclosure Agreement (SF-312) required.
• S. citizenship; favorably adjudicated background investigation and FBI fingerprint check; ability to obtain and maintain a DoD Common Access Card (CAC) as a condition of continued employment.

Responsibilities

• Serve as the designated Information System Security Engineer (ISSE) for assigned client information systems, OT, and hybrid cyber-physical platforms; lead the full RMF lifecycle from categorization through continuous monitoring and decommissioning.
• Develop, maintain, and manage RMF authorization packages in eMASS, including SSPs, SCTMs, POA&Ms, Security Assessment Reports, Contingency Plans, Incident Response Plans, risk assessments, hardware/software lists, network topology and boundary diagrams, and data flow diagrams.
• Perform Security Readiness Reviews (SRRs); review and analyze ACAS/Nessus vulnerability scan results; track remediation through patching cycles or POA&Ms, including false-positive management and DISA ticket coordination.
• Maintain continuous monitoring and ensure ongoing compliance with DoD, DHS, and USCG security requirements and DISA STIGs; support cATO initiatives, automated evidence collection, and dashboard integration.
• Conduct Security Impact Assessments for proposed system changes; participate in change management boards, DHS SELC reviews, acquisition milestones (PMR, PDR, CDR), CONOPS meetings.
• Integrate Zero Trust principles, RMF controls, and OT/ICS-specific security requirements into system designs; conduct security engineering analyses and risk assessments.
• Evaluate emerging threats, adversary TTPs, OT/ICS vulnerabilities, and supply-chain risks; recommend safeguards and mitigation strategies.
• Produce weekly, monthly, and quarterly cybersecurity readiness updates, metrics, executive briefings, and risk memorandums for Government leadership.

Skills

CISSP-ISSAP or CISSP-ISSEP

Active DoD SECRET clearance

U.S. citizenship

RMF lifecycle experience

Strong communication skills

ISSE leadership

Government/customer interface

Technical leadership

Education

Bachelor's degree in Computer Science or related field

Job description

Alpha Omega Integration is seeking a senior Cybersecurity Subject Matter Expert (SME) to lead RMF implementation, ISSE activities, and security compliance across DoD/USCG environments. Hybrid work with Washington, DC and Northern Virginia locations.

Requires active SECRET clearance and DoD 8570 certifications. The role provides senior technical leadership, mentoring, and engagement with Government management, focusing on risk-informed security, continuous monitoring, and incident response