Senior Cybersecurity Engineer – Information System Security Engineer

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🕒 3 days ago

🏰 Missouri – Remote

🏰 Missouri – Remote

⏰ Full Time

🟠 Senior

👮‍♂️ Cybersecurity / Security Engineer

👻 Ghost score 12%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Seneca Holdings

WebsiteLinkedInAll Job Openings

501 - 1000 employees

💼 Consulting

🏥 Healthcare

📦 Logistics

Consulting • Healthcare • Logistics

Seneca Holdings is the investment arm of the Seneca Nation, dedicated to building a portfolio of profitable businesses that promote long-term income and self-sufficiency for the Nation. The organization focuses on diversifying revenue streams through a variety of sectors, including federal government contracting, environmental solutions, and health-related services. By investing in sustainable opportunities, Seneca Holdings aims to support the economic growth of the Seneca community while honoring its mission of serving future generations.

📋 Description

• Implement and maintain technical security controls under the NIST Risk Management Framework and NIST SP 800-53 • Support Information Security Continuous Monitoring activities under NIST SP 800-137 • Provide engineering support throughout the RMF authorization lifecycle and assess security control effectiveness • Develop corrective actions for security control weaknesses • Maintain System Security Plans, control implementation statements, assessment evidence, and POA&Ms • Evaluate system changes for cybersecurity impacts and maintain approved security configuration baselines • Provide technical evidence and remediation support for ATO activities • Administer Tenable Nessus and Tenable Security Center, including scanners, repositories, policies, credentials, and reporting • Conduct authenticated and unauthenticated vulnerability assessments and prioritize remediation • Coordinate vulnerability remediation and validate effectiveness through follow-up scans • Implement DISA STIGs and SRGs and conduct automated and manual compliance assessments • Develop and maintain secure configuration baselines and investigate configuration deviations • Administer and troubleshoot HBSS and successor endpoint security technologies, including Trellix/McAfee ePO • Manage endpoint security policies, agent deployments, updates, health monitoring, and alerts • Administer, secure, patch, harden, and troubleshoot RHEL and Microsoft Windows Server systems • Support configuration management, change control, technical documentation, and secure enterprise operations • Support AWS security compliance, vulnerability management, identity and access management, monitoring, and configuration assessments • Identify and remediate cloud security misconfigurations and support on-premises/cloud security integration • Collaborate with ISSMs, ISSOs, system administrators, network engineers, infrastructure teams, and system owners

🎯 Requirements

• Minimum of 10 years of relevant professional experience in cybersecurity engineering, information assurance, vulnerability management, or enterprise security operations • Experience supporting DoD, federal government, or similarly regulated enterprise environments • Hands-on experience conducting vulnerability assessments, implementing security controls, and remediating technical security findings • Experience administering, configuring, and securing enterprise Windows and Linux systems • Experience supporting RMF compliance, continuous monitoring, and security authorization activities • Strong understanding of enterprise infrastructure, operating system security, endpoint protection, and vulnerability management principles • Current CompTIA Security+ certification required • Current AWS certification required, such as AWS Certified Solutions Architect, AWS Certified SysOps Administrator, AWS Certified Security – Specialty, or another relevant AWS certification • Must meet applicable DoD 8140 qualification requirements for the designated cybersecurity work role and proficiency level • Top Secret (TS) security clearance required for full performance; candidates with an active Secret clearance may be considered if eligible and willing to undergo the TS process • Demonstrated experience with NIST RMF, NIST SP 800-53, NIST SP 800-137, DISA STIG/SRG, eSTIG, SCAP, Tenable.sc, Tenable Nessus, HBSS, RHEL, Windows Server, AWS security, and technical compliance documentation • Experience with Trellix/McAfee ePO and enterprise endpoint security management • Experience automating configuration, compliance assessments, and remediation using Ansible, PowerShell, Bash, or similar technologies • Experience with AWS security services and federal cloud compliance requirements • Experience developing vulnerability metrics, compliance dashboards, and technical security reports • Familiarity with enterprise networking, firewall configurations, and network security principles • Additional certifications such as CISSP, CompTIA SecurityX, CySA+, RHCSA, or AWS Certified Security – Specialty are desired

🏖️ Benefits

• Competitive pay • Medical, dental, and vision insurance • Life and disability insurance • Voluntary critical illness, hospital, and accident benefits • Health savings accounts (HSAs) • Flexible spending accounts (FSAs) • Retirement 401(k) plan • Paid leave programs • Flexible work-life balance • Professional development opportunities • Performance and recognition programs • Collaborative work environment • Hiring preference for Seneca or Native individuals

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