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RiVidium Inc. is seeking an Endpoint Security Solutions (ESS) Systems Engineer ? Level 1 to provide senior-level engineering support for enterprise endpoint security operations within a mission-critical Department of Defense environment. The selected candidate will lead the deployment, configuration, maintenance, and optimization of enterprise endpoint security solutions while ensuring compliance with DoD cybersecurity requirements and organizational security policies.

This position serves as a subject matter expert (SME) for the Trellix Enterprise Security Suite and related endpoint security technologies. The successful candidate will provide technical leadership, support vulnerability management and compliance initiatives, contribute to incident response activities, and help maintain a secure and resilient enterprise security posture across complex Windows and Linux environments.

Key Responsibilities

• Lead the deployment, configuration, administration, and optimization of enterprise endpoint security solutions across the organization.
• Serve as the primary subject matter expert (SME) for the Trellix Enterprise Security Suite, including:
  • ePolicy Orchestrator (ePO)
  • Endpoint Security (ENS) Firewall and Threat Prevention
  • Policy Auditor (PA)
  • Data Loss Prevention (DLP)
  • Trellix Application and Change Control (TACC) Whitelisting
  • Other DoD-mandated security applications
• Lead the integration of ePO, ENS, DLP, and related services within enterprise security architectures.
• Install, configure, troubleshoot, and maintain hardware, software, security applications, and system accounts supporting endpoint security operations.
• Conduct vulnerability assessments and remediation activities to strengthen enterprise security posture.
• Lead Security Technical Implementation Guide (STIG) implementation and compliance efforts.
• Support and drive Risk Management Framework (RMF) activities, continuous monitoring efforts, and cybersecurity compliance initiatives.
• Analyze security data, generate reports, and provide recommendations to improve security operations and compliance.
• Support incident response activities and assist with threat detection, investigation, containment, and remediation efforts.
• Troubleshoot and resolve complex endpoint security issues across multi-platform environments.
• Provide technical leadership, mentorship, and guidance to junior and mid-level engineers.
• Develop and maintain technical documentation, procedures, standards, and operational guides.
• Collaborate with cybersecurity teams, system administrators, network engineers, and government stakeholders to support enterprise security objectives.
• Present technical findings, compliance status, and security recommendations to leadership and non-technical audiences as required.

Required Qualifications

• Active TS/SCI clearance eligibility required at contract start.
• Minimum of seven (7) years of progressive experience operating, securing, and administering enterprise IT systems with a strong focus on endpoint security.
• Demonstrated senior-level expertise administering and supporting the Trellix Enterprise Security Suite, including:
  • ePolicy Orchestrator (ePO)
  • Endpoint Security (ENS)
  • Policy Auditor (PA)
  • Data Loss Prevention (DLP)
  • Trellix Application and Change Control (TACC)
  • Other DoD-mandated endpoint security applications
• Experience integrating endpoint security platforms into enterprise cybersecurity environments.
• Experience installing, configuring, troubleshooting, and maintaining enterprise hardware, software, and system accounts.
• Experience leading vulnerability assessments, STIG implementation, RMF compliance activities, and continuous monitoring programs.
• Expert knowledge of Microsoft Windows and Linux operating systems in enterprise environments.
• Advanced troubleshooting and problem-solving skills in complex, multi-platform environments.
• Strong customer service, communication, and stakeholder engagement skills.
• Ability to communicate technical concepts, findings, and recommendations to both technical and non-technical audiences.
• Must meet DoDM 8140.03 foundational requirements for Work Role Code (WRC) 451 ? System Administrator.

Preferred Qualifications

• Experience providing technical leadership and mentoring junior and mid-level engineers.
• Experience supporting cybersecurity operations within Federal, DoD, Intelligence Community, or classified environments.
• Experience supporting Security Operations Center (SOC) activities, enterprise monitoring programs, or continuous diagnostics and mitigation initiatives.
• Experience preparing executive-level compliance reports, security assessments, and incident response briefings.
• Familiarity with additional enterprise cybersecurity tools, platforms, and architectures used within DoD environments.
• Experience supporting enterprise security architecture, platform modernization, and security hardening initiatives.
• Familiarity with additional DoDM 8140.03 work roles and associated cybersecurity requirements.
• Additional Trellix, cybersecurity, or DoD-recognized advanced certifications.

Required Certifications

Candidates must possess the following certifications at contract start:

• ESS Administrator 201
• ESS Advanced Administrator 301
• ESS Analyst 501
• ENS 10.X Certification

Additionally, candidates must meet all DoDM 8140.03 Work Role Code (WRC) 451 ? System Administrator foundational requirements at contract start.