The Role
The Enterprise Support ISSE will engineer and validate security controls, manage accreditation packages, and advise on secure implementation strategies within enterprise systems, ensuring compliance with DoD cybersecurity requirements.
Summary Generated by Built In
Job Summary & Responsibilities
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 DevSecOps 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/DoD365, AESMP, C2C, AUDS-U/C, AGUN, and CBII, ensuring security control alignment across modernization programs
Required Qualifications
- Clearance: ActiveTS/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 8140.03Compliance: 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)
Skills Required
- Active TS/SCI security clearance
- Master's or Ph.D. in a relevant discipline or equivalent experience
- Extensive experience in information systems security engineering (8+ years)
- Experience managing accreditation packages for Secret and Top Secret systems
- Certifications: CCSP or an approved accredited degree
ECS Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about ECS and has not been reviewed or approved by ECS.
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Healthcare Strength — ECS advertises multiple national-network medical plan options with HSA eligibility alongside dental and vision coverage. Coverage generally begins quickly and is paired with company-paid short- and long-term disability, adding stability to the health package.
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Retirement Support — A 401(k) with Safe Harbor and immediate vesting on employer contributions is emphasized, with an employer match available. Access to an employee stock purchase plan via the parent company provides an additional savings avenue.
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Parental & Family Support — Paid parental leave up to 30 days, adoption assistance, and other family-oriented leaves are highlighted. Feedback suggests these offerings add meaningful value beyond base pay for many roles.
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The Company
What We Do
ECS, a segment of ASGN (NYSE: ASGN), delivers advanced solutions and services in cloud, cybersecurity, artificial intelligence (AI), machine learning (ML), application and IT modernization, and science and engineering. The company solves critical, complex challenges for customers across the U.S. public sector, defense, intelligence and commercial industries. ECS maintains partnerships with leading cloud, cybersecurity, and AI/ML providers and holds specialized certifications in their technologies. Headquartered in Fairfax, Virginia, ECS has more than 3,400 employees throughout the U.S. and has been recognized as a Top Workplace by The Washington Post for the last five years.
