Enterprise ISSE; Senior Job Fairfax area,Virginia USA,IT/Tech

Position: Enterprise Support ISSE (Senior)
Everforth ECS is seeking an Enterprise Support ISSE (Senior) to work in Fairfax, Virginia.

Please Note:

This position is contingent upon contract award.

Responsibilities

Engineer and validate implementation of security controls across enterprise infrastructure, hosting platforms, identity services, and network environments supporting Task 4operations
Integrate technical safeguards including configuration baselines, encryption mechanisms, logging and monitoring configurations, vulnerability mitigation measures, and access control enforcement in accordance with DoD/ARNG cybersecurity policy and RMF requirements
Conduct control validation activities and security assessments to verify proper implementation and continued effectiveness of required security controls across enterprise systems
Support Authority to Operate (ATO) sustainment activities, including continuous monitoring, security documentation maintenance, and Plan of Action and Milestones (POA&M) management
Coordinate remediation of identified security findings, vulnerabilities, STIG deficiencies, and IAVM compliance gaps across operations and engineering teams
Advise operations and engineering teams on secure implementation strategies, defense-in-depth principles, and security architecture best practices to maintain compliant and defensible enterprise environments
Perform security engineering reviews of infrastructure changes, system upgrades, configuration modifications, and new technology integrations prior to production deployment
Support RMF lifecycle activities including security categorization, control selection, implementation assessment, authorization documentation, and continuous monitoring
Manage and maintain accreditation packages for systems operating at Secret and Top Secret classification levels
Provide security engineering guidance for enterprise modernization initiatives, including cloud migration, Zero Trust implementation, and Dev Sec Ops pipeline integration
Coordinate with enterprise operations, hosting, network, identity services, and cybersecurity teams to ensure integrated security posture across all operational domains
Contribute to enterprise security planning efforts related to ARNG initiatives such as A365/DoD
365, AESMP, C2C, AUDS-U/C, AGUN, and CBII, ensuring security control alignment across modernization programs

Required Qualifications

Clearance: Active

TS/SCI security clearance required
U.S. Citizenship required
Education: Master's or Ph.D. in Computer Science, Cybersecurity, Data Science, Information Systems, Information Technology, Software Engineering, or related discipline (or equivalent combination of education and experience)
Experience: Extensive experience (8+ years) in information systems security engineering and enterprise IT security within DoD or Federal environments
Demonstrated experience engineering and validating security controls across enterprise infrastructure, hosting platforms, identity services, and network environments
Experience integrating technical safeguards including configuration baselines, encryption mechanisms, logging and monitoring configurations, vulnerability mitigation measures, and access control enforcement in accordance with DoD cybersecurity policy and RMF requirements
Proven experience conducting control validation activities, supporting ATO sustainment, and coordinating remediation of identified security findings across multi-domain enterprise environments
Experience managing accreditation packages for systems operating at both Secret and Top Secret classification levels
Demonstrated ability to advise operations and engineering teams on secure implementation strategies within complex, geographically distributed enterprise environments
Proven ability to provide security engineering governance and technical oversight for integration of new services, modernization initiatives, and configuration changes into existing enterprise environments while maintaining continuous compliance and operational resilience
DoD 8140.03

Compliance: DoD Cyber Workforce Framework (DCWF) Work Role 671 - System Testing and Evaluation Specialist at the Advanced proficiency level
Certifications (one or more required): CCSP or an approved accredited degree (Master's or Ph.D. in Computer Science, Cybersecurity, Data Science, Information Systems, Information Technology, or Software Engineering from a regionally or nationally recognized accrediting agency)