Senior Security Engineer- -TS/SCI w/ Poly Security Clearance Required

Power3 Solutions • Columbia, MD

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About The Position

The Senior Security Engineer serves as a technical leader responsible for architecting, engineering, and sustaining enterprisegrade security solutions across complex IT environments. This role is deeply handson and requires the ability to design, build, implement, operate, and optimize security technologies that protect missioncritical systems. The Senior Security Engineer provides technical direction, mentors junior engineers, and drives security innovation across the organization. The engineer leads advanced research, evaluation, and integration of emerging security technologies to strengthen the enterprise security posture. They ensure that system hardware, operating systems, software, and security controls adhere to organizational policies, compliance frameworks, and mission objectives.

Requirements

• 8+ years of progressive experience designing, engineering, and securing enterprisescale IT systems across complex network environments
• Expertlevel knowledge in architecting, deploying, and maintaining security infrastructure, including endpoint protection, vulnerability management, configuration management, and enterprise hardening solutions
• Demonstrated experience leading security engineering initiatives, including implementing advanced security controls, designing secure configurations, and overseeing patch and update strategies for Linux and Windows environments
• Extensive handson experience with enterprise security tools, such as Ivanti, WSUS, Trellix, Tenable, or equivalent platforms, including tool integration, optimization, and lifecycle management
• Strong understanding of security frameworks and compliance requirements, such as NIST RMF, NIST 80053, STIGs, or equivalent federal/DoD standards
• Demonstrated ability to lead complex troubleshooting efforts, perform rootcause analysis, and drive longterm remediation strategies across enterprise systems
• Experience mentoring junior engineers, providing technical leadership, and contributing to team capability development
• Required IAT/Managementlevel certification: one or more of the following — CASP+, CISSP, or equivalent seniorlevel certification
• Required vendor certification in one or more relevant technologies (e.g., Microsoft, VMware, Cisco, NetApp, Pure Storage, HP, Dell, Linux+, Red Hat, HBSS, ACAS). Candidates without an active certification must obtain at least one within 6 months of hire
• TS/SCI

Nice To Haves

• Bachelors Degree
• Experience working within a SOC

Responsibilities

• Architect, implement, and maintain enterprise security controls and infrastructure components across Windows, Linux, and virtualized environments
• Lead the design, deployment, configuration, and lifecycle management of endpoint hardening and security tools (e.g., Ivanti, WSUS, Trellix, Tenable)
• Oversee patch management processes, including OS updates, thirdparty software updates, and administrative tool upgrades
• Provide expertlevel troubleshooting, rootcause analysis, and performance optimization for complex security and infrastructure issues
• Evaluate, recommend, and lead the adoption of new security tools, technologies, and methodologies
• Develop and maintain security documentation, including SSPs, RMF artifacts, engineering diagrams, and operational procedures
• Design and implement security requirements within enterprise business processes and technical architectures
• Support vulnerability assessments, interpret results, and develop riskbased mitigation strategies
• Conduct system hardening, configuration baselining, and compliance scanning to ensure adherence to security standards
• Support and guide incident response activities, including forensic analysis and containment strategies
• Collaborate with crossfunctional teams to ensure security is embedded throughout system lifecycles
• Mentor and provide technical leadership to junior and midlevel security engineers
• Contribute to longterm security strategy, capability development, and continuous improvement initiatives
• Support a diverse set of enterprise networks and mission environments as part of a highperforming security engineering team

Benefits

• Health and Wellness Benefits Medical Insurance (three CareFirst healthcare plans to choose from, Dental and Vision Insurance, 75% covered for employee/ 50% per dependant Health Savings Account (HSA) contributions $1500 individual/ $3000 family
• Personal Insurance Benefits Company-paid Life Insurance and AD&D coverage Company-paid Short-term and Long-term Disability Insurance
• Paid Leave Employees receive 20 days of vacation/10 holidays built into hourly rate/ 5 days of sick time (currently used for snow, jury, bereavement)
• Retirement Pre-tax 401k program including 6% company match 100% fully vested from eligibility date Eligible after 90 days of employment

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level