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VMWare Systems Administrator - Top Secret/SCI | Quantico, VA
Cambridge International Systems, Inc.
Join a dynamic global team united by shared values: commitment, integrity, and perseverance. At Cambridge, you'll work alongside top talent worldwide, tackling some of today's most complex and critical challenges in defense and security.
We are currently seeking a VMWare Systems Administrator to support operations in Quantico, VA. This is a full-time, CONUS position requiring an active DoD Top Secret/SCI.
The base salary range for this role is $77,000 to $143,000 annually, depending on geographic location and experience. The final offer will be based on relevant experience, skills, internal equity, and market data.
What You'll Do
As a VMWare Systems Administrator, you will play a critical role in Quantico, VA, that serve U.S. government missions oversees. This role falls under Virtual Systems Administrator in our ERI compensation structure. You will:
Specialize in designing, implementing, securing, and maintaining enterprise-grade virtualized infrastructures. This role requires broad expertise across VMware technologies as well as Windows-based enterprise services to ensure stable, secure, and highly available environments.
Virtualization & Infrastructure Management

• Manage, optimize, and maintain VMware vSphere environments, including ESXi hosts, vCenter Server, resource management, and distributed switching.

• Administer and troubleshoot clustered architectures leveraging vSAN, vMotion, Storage vMotion, DRS, and HA to ensure uninterrupted service availability.
• Monitor and support shared storage platforms (vSAN, iSCSI, NFS, FC) and understand their role in VM mobility and host clustering.

Windows Enterprise Services Administration

• Support virtualized Windows Server workloads, including Active Directory, DNS, DHCP, Group Policy, LDAP, and PKI/Certificate Services.
• Ensure seamless integration between VMware infrastructure and Windows-based identity, authentication, and certificate components.

System Hardening & Security Compliance

• Implement, maintain, and validate STIG-compliant baselines for ESXi hosts, vCenter, and Windows Server systems.
• Utilize VMware Security Configuration Guides, DoD STIGs, CIS Benchmarks, STIG Viewer, and PowerCLI to maintain hardened configurations.
• Perform routine audits and remediation to ensure compliance with organizational and federal security requirements.

Design & Implementation

• Design and deploy virtual infrastructure solutions-including clusters, shared storage, networking, and lifecycle management-following best practices for performance and security.
• Develop templates, golden images, and standard operating procedures to support consistent VM deployments and secure configurations.

Collaboration & Support

• Collaborate with systems, network, and cyber engineers to deliver and maintain reliable, secure enterprise environments.
• Troubleshoot complex virtualization and Windows-based issues.
• Administers, designs, implements, supports, and maintains operations for an organization's VMware environment infrastructure.
• Oversees performance tuning and monitors performance of server systems, including uptime, failover, anti-viral, and anti-spamming.
• Sets up and maintains fault tolerances, and monitors and manages accounts.

What You'll Bring
Required Qualifications:

• Education & Experience:
  • Bachelors 's degree in Information Technology, Computer Science, Systems Engineering, or related field with 5+ years of relevant experience required; 7 + years may be substituted in lieu of a degree.

• Technical Expertise:
  • Strong proficiency with VMWare vSphere, vSAN, vMotion, HA/DRS,and enterprise virtualization management.
  • Hands-on experience managing Windows Server enterprise environments, including AD, DNS, PKI, Group Policy, and LDAP-backed authentication.
  • Familiarity with networking concepts (VLANs, routing, distributed switching, firewall rules) and storage architectures.
  • Experience applying STIGs, CIS Benchmarks, or other hardening frameworks to both VMWare and Windows systems.

• Certifications:

• VMWare Certified Professional (VCP) required; VMWare Certified Advanced Professional (VCAP) preferred.
• Windows certifications (e.g., MCSA/MCSE or equivalent)

• Required Clearance Level:
  • Must have a current and active DoD Top Secret/SCI security clearance.
  • Proficient with modern IT tools and infrastructure technologies

Preferred (Nice to Have):

• Experience with scripting or automation tools (PowerCLI, PowerShell, Python).
• Strong analytical, troubleshooting, documentation, and communication skills.

Travel & Passport

• Up to 10% travel; some overnight stays possible.

Physical & Work Environment Requirements

• Periods of prolonged sitting and/or standing, including desk-based computer work.
• Travel between work locations, including company offices, customer sites, and government installations.
• Occasional extended work hours, including evenings or weekends, as needed.
• Transport and use of work equipment, such as laptops and job-related tools, during site visits.
• Work is performed in a secure facility where personal electronic devices (including Bluetooth- or Wi-Fi-enabled devices) may be restricted.
• Communication with team members, customers, and stakeholders through verbal and written methods.
• Ability to manage competing priorities, work under deadlines, and maintain attention to detail.
• Interaction with others in dynamic environments, including situations requiring problem-solving and conflict resolution.
• Compliance with vaccination and medical requirements for TDY/OCONUS roles as per Vaccine Recommendations by AOR | Health.mil.

Background & Security

• Employment is contingent upon successful background investigation
• Alcohol and Drug screening may be required for federal contract compliance

Benefits & Perks
We believe in investing in our team-both professionally and personally:

• Medical, dental, vision, life, accident, and critical illness insurance
• 401(k) immediate vesting and match
• Paid time off and company holidays
• Generous tuition & training support
• Relocation assistance
• Sign-on and performance-based bonuses
• Employee referral program
• Access to Tickets at Work, EAP, wellness initiatives, and more

Join Us
If you're driven by mission, technology, and teamwork-we want to hear from you. Cambridge is growing, and this position is just one of many opportunities on our global team. Know someone perfect for the role? Referrals are welcome-both employees and non-employees may qualify for a bonus.
Apply today and help shape the future of secure cloud computing for national security.
About Cambridge International Systems
At Cambridge, we recognize innovation and agility grow through teamwork. By working collaboratively, listening proactively, and engaging across functions we create solutions that build on the best ideas our employees bring to the table. We are committed to one another, to persevere in order to get the job done, and to do so with integrity every time. Learn more at www.cbridgeinc.com.
We are an equal opportunity employer. Applicants and employees are considered for positions and are evaluated without regard to any protected status under applicable law or other similar factors that are not job-related. We encourage all qualified individuals to apply for employment. Selected applicants may be subject to a background investigation and/or education verification.
We provide reasonable accommodation for qualified individuals with disabilities in accordance with federal, state, and local law. If you require a reasonable accommodation to participate in the application process or to perform the essential functions of the position, please contact our Recruiting Team at [email protected].