Windows Systems Engineer

Vosper Thornycroft Group; Herndon (VA); On-site; USD 120,000 - 150,000; Full time

Job summary

Vosper Thornycroft Group is seeking an experienced Windows Systems Engineer in Herndon, Virginia. This role involves designing, implementing, and maintaining a Windows-based infrastructure, ensuring cybersecurity and system performance. The ideal candidate must have a Top Secret Clearance, a relevant degree, and at least 16 years of experience in system engineering and cybersecurity. You'll support endpoint security and monitor cybersecurity threats while optimizing performance across enterprise environments.

Qualifications

• Must have a Top Secret Clearance with Polygraph.
• Minimum of 16 years of experience in systems engineering or cybersecurity engineering.
• Experience with enterprise databases, virtualization, and cloud services.

Responsibilities

• Administer and support Windows and Linux systems.
• Deploy, configure, and maintain Trellix security tools.
• Implement and support Data Loss Prevention solutions.
• Monitor cybersecurity threats and system health.

Skills

Windows Systems Administration

Linux Systems Administration

Cybersecurity Operations

Active Directory Administration

Data Loss Prevention (DLP)

Trellix Security Solutions

Education

Bachelor’s or Master’s degree in a related field

Tools

Trellix Endpoint Security (ENS)

ePolicy Orchestrator (ePO)

Endpoint Detection and Response (EDR)

Threat Intelligence Exchange (TIE)

Data Exchange Layer (DXL)

Job description

Overview

We are seeking an experienced Windows Systems Engineer to support a mission-focused enterprise environment, responsible for designing, implementing, and maintaining Windows-based infrastructure and enterprise cybersecurity platforms, including Trellix security solutions. The ideal candidate will support endpoint security operations, threat detection and response capabilities, and ensure system availability, performance, and compliance across complex enterprise environments.

What will you do?

• Administer and support Windows and Linux systems within enterprise environments
• Deploy, configure, and maintain Trellix security tools including ENS, ePO, EDR, TIE, and DXL
• Implement and support Data Loss Prevention (DLP) solutions, including network monitoring and prevention capabilities
• Support Active Directory architecture, administration, and troubleshooting
• Monitor, detect, and respond to cybersecurity threats using enterprise security tools and frameworks
• Support planning and implementation of new system architectures and modernization of legacy infrastructure
• Conduct system tuning, configuration, and performance optimization for enterprise platforms
• Perform root cause analysis, log reviews, and troubleshooting of system and security issues
• Collaborate with stakeholders to ensure security posture aligns with mission and operational requirements
• Monitor system health, availability, and performance metrics to ensure operational readiness

Do you have what it takes?

• Must have a Top Secret Clearance with Polygraph
• Bachelor’s or Master’s degree in a related field
• Minimum of 16 years of experience in systems engineering, cybersecurity engineering, or Windows/Linux systems administration
• Strong experience with cybersecurity operations and engineering in enterprise environments
• Experience with Trellix Endpoint Security (ENS), ePolicy Orchestrator (ePO), Endpoint Detection and Response (EDR), Threat Intelligence Exchange (TIE), and Data Exchange Layer (DXL)
• Experience with Data Loss Prevention (DLP) tools and network monitoring solutions
• Strong background in Active Directory administration and troubleshooting
• Experience with enterprise databases, virtualization, cloud services (AWS, Azure), and networked environments
• Ability to quickly develop expertise with Trellix and related cybersecurity platforms
• Familiarity with cyber threat identification, mitigation, and incident response strategies
• Experience designing and implementing enterprise-scale system architectures

Preferred Qualifications

• Experience writing technical documentation, briefings, and operational reports
• Experience leading or participating in technical exchange meetings and stakeholder engagements
• Experience working with inter‑agency, intra‑agency, and external partners and vendors
• Experience supporting Certification & Accreditation (C&A) or Authorization & Accreditation (A&A) processes
• Experience supporting deployment planning, execution, system configuration, and policy development
• Experience monitoring system health, availability, and performance in enterprise environments
• Experience analyzing operational data and providing technical recommendations
• Experience leading or supporting technical troubleshooting efforts, including log analysis and vendor coordination
• Strong analytical, communication, and problem‑solving skills