Senior Information Systems Security Engineer

ECS; Huntsville (AL); On-site; USD 90,000 - 130,000; Full time

Job summary

ECS is seeking a Senior Information Systems Security Engineer in Huntsville, AL. This role involves supporting cybersecurity and security authorization for federal information systems. Key responsibilities include risk management framework support, mentoring cybersecurity personnel, and providing technical security engineering. The ideal candidate must have at least eight years of experience, an active Top Secret clearance, and a CISSP or CEH certification. This position is contingent upon contract award.

Qualifications

• Must have an active Top Secret clearance with SCI eligibility.
• Minimum eight years’ experience in information security design and analysis.
• CISSP or CEH certification required.

Responsibilities

• Serve as a senior security engineering advisor throughout Security Assessment and Authorization lifecycle.
• Provide technical support for Risk Management Framework activities.
• Mentor junior cybersecurity personnel and share best practices.

Skills

Technical security engineering

Risk Management Framework

Secure architecture

Communication skills

Mentoring

Education

Bachelor’s or advanced degree in cybersecurity or related discipline

Tools

Cloud security tools (AWS, Azure, GCP)

Vulnerability tools (Tenable, Nessus)

Job description

Senior Information Systems Security Engineer – Huntsville, AL

Everforth ECS Federal is seeking a Senior Information Systems Security Engineer to support cybersecurity, risk management, and security authorization activities for law enforcement and national security organizations. This role will provide technical security engineering, Risk Management Framework lifecycle support, and secure architecture expertise for complex federal information systems operating in sensitive and mission‑critical environments. The position is contingent upon contract award.

Responsibilities

• Serve as a senior security engineering advisor for assigned federal information systems throughout the Security Assessment and Authorization lifecycle.
• Provide technical security engineering support for Risk Management Framework activities, including Prepare, Categorize, Select, Implement, Assess, Authorize, and Monitor.
• Advise system owners, security officers, security managers, and technical teams on secure architecture, control implementation, vulnerability remediation, least privilege, least functionality, system boundaries, data flows, and interconnections.
• Support development, review, and maintenance of security authorization artifacts such as System Security Plans, control implementation descriptions, Plans of Action and Milestones, risk assessments, network diagrams, data flow diagrams, hardware/software inventories, and assessment evidence.
• Help ensure assigned systems maintain compliant authorizations by proactively tracking authorization schedules, documentation status, control gaps, and remediation activities.
• Develop and update security test plans and assessment approaches to detect, document, and mitigate risk to information systems.
• Support vulnerability and patch management activities by tracking findings, coordinating remediation, and ensuring closure.
• Provide technical input for federal cybersecurity compliance, emergency directives, vulnerability reporting, audit readiness, and continuous monitoring.
• Coordinate with cybersecurity, engineering, infrastructure, and mission stakeholders to resolve technical security issues and improve authorization execution quality.
• Mentor junior and mid-level cybersecurity personnel and share RMF and security engineering best practices.
• Contribute to portfolio and program improvements by identifying recurring risks, documentation gaps, process inefficiencies, automation opportunities, and recommending improvements.
• Track, report, and communicate security risks, remediation status, documentation quality issues, and improvement opportunities to program leadership and government stakeholders.
• Maintain current knowledge of NIST RMF, NIST SP 800‑53 Rev. 5, NIST SP 800‑53A, FISMA, CNSS, DOJ, IC, and other applicable guidance.

Required Skills

• Active Top Secret clearance with SCI eligibility.
• Compliance with federal law enforcement and national security suitability, access, and polygraph requirements.
• U.S. citizenship required; no dual citizenship.
• At least eight years of experience in secure design, analysis, and testing of information security systems and products.
• At least eight years of experience applying security methods, standards, and approaches to implement and document baseline security safeguards.
• At least eight years of experience creating or updating security test plans to detect and mitigate risk to information systems.
• Experience supporting RMF, Security Assessment and Authorization, ATO, POA&M, vulnerability management, audit readiness, and security control implementation.
• Ability to translate security requirements into practical system, network, cloud, or infrastructure configurations.
• Strong written and verbal communication skills, including briefing risks, findings, recommendations, and remediation plans to technical and non‑technical stakeholders.
• CISSP or CEH certification required.

Desired Skills

• Cloud security certification or experience with AWS, Azure, or GCP.
• Experience supporting federal law enforcement, intelligence, defense, national security, or other cleared federal environments.
• Experience with federal Security Assessment and Authorization and Risk Management Framework processes.
• Experience with GRC tools such as Xacta, CSAM, JCAM, or similar platforms.
• Experience with vulnerability and security tools such as Tenable/Nessus, SecurityCenter, Splunk, Guardium, WebInspect, Nmap, or similar technologies.
• Bachelor’s or advanced degree in cybersecurity, computer science, information technology, engineering, business management, or a related discipline.

Equal Opportunity Statement

ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis of any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran, or any other status protected by applicable federal, state, or local jurisdiction law.