Sr, IT Certified Professional

Senior IT Certified Professional – DoD RMF / Cybersecurity (ISSO)

Important Notice: This is an anticipated position contingent upon ASIST's team receiving a federal contract award. ASIST is currently identifying and screening qualified candidates for inclusion in the team's bid. This posting does not represent a funded position or guarantee an offer of employment.

Minimum Requirements: Active Secret clearance | 5+ years DoD RMF experience | CISSP, CySA+, or SecurityX/CASP+ certification | On-site at Aberdeen Proving Ground, MD.

Atlas Systems Integration and Support Technologies (ASIST) is seeking a qualified Senior IT Certified Professional / Information System Security Officer (ISSO) for an anticipated position supporting Cybersecurity Engineering and Department of Defense (DoD) Risk Management Framework (RMF) Support Services at Aberdeen Test Center (ATC), Aberdeen Proving Ground, Maryland.

About ASIST

Atlas Systems Integration and Support Technologies (ASIST) is a Service-Disabled Veteran-Owned Small Business (SDVOSB) providing information technology, cybersecurity, systems integration, and mission support services to federal customers. ASIST is an Equal Opportunity Employer committed to fair and equitable consideration of qualified applicants.

Position Overview

Work Arrangement: On-site

Security Clearance: Active Secret Required

The selected professional will support the cybersecurity authorization, assessment, and continuous monitoring of Army information systems operating in classified and unclassified environments.

This position requires hands-on experience supporting DoD RMF activities, maintaining cybersecurity authorization documentation, and managing system hardware and software baselines.

Key Responsibilities

• Prepare, maintain, and update RMF authorization documentation, including System Security Plans (SSPs), security control implementation statements, Plans of Action and Milestones (POA&Ms), and continuous monitoring reports.
• Maintain accurate authorization records and supporting documentation within the Enterprise Mission Assurance Support Service (eMASS).
• Conduct hardware and software reconciliation, including asset inventories, approved software lists, and configuration baselines.
• Support security control assessments, audits, and Authority to Operate (ATO) activities.
• Perform vulnerability and compliance assessments using DISA STIGs, SCAP Compliance Checker, ACAS/Nessus, and related cybersecurity tools.
• Analyze vulnerabilities, document findings, coordinate remediation activities, and track corrective actions.
• Support information system configuration management, change control, and cybersecurity compliance reporting.
• Maintain system security architecture documentation, including authorization boundaries, network diagrams, and data flows.
• Support Information Assurance Vulnerability Management (IAVM) requirements and DoD/Army cybersecurity reporting.

Minimum Qualifications

• Active Secret security clearance.
• Minimum five years of experience supporting DoD RMF lifecycle documentation and reporting.
• Demonstrated experience performing hardware/software reconciliation and maintaining configuration baselines.
• Experience supporting cybersecurity activities across Windows, Linux, and Apple environments.
• Working knowledge of NIST SP 800-53, DoD RMF requirements, DISA STIGs, and cybersecurity assessment processes.
• Ability to work on-site at Aberdeen Proving Ground, Maryland.

Required Certifications

Candidates must possess at least one of the following Government-accepted cybersecurity certifications:

• CompTIA SecurityX (formerly CASP+)
• CompTIA CySA+
• Certified Information Systems Security Professional (CISSP)

The position aligns with DoD Cyber Workforce Framework (DCWF) Work Role 651 — Enterprise Architect, Intermediate proficiency
, as identified in the Government's position requirements.

Preferred Qualifications

• Previous cybersecurity or RMF experience supporting Army or DoD organizations.
• Hands-on experience with eMASS, ACAS, STIG Viewer, and SCAP Compliance Checker.
• Experience supporting classified information systems and SIPRNet environments.
• Experience preparing authorization packages, supporting Security Control Assessors, and maintaining ATO compliance.
• Strong technical writing, analytical, and communication skills.