CyberSecurity Engineer III

Jobtailor; San Diego (CA); On-site; USD 140,000 - 190,000; Full time

Job summary

Jobtailor in San Diego seeks an experienced Infrastructure Engineer to design and administer secure stacks, VMware ESXi/vSAN, and on-premises/private cloud environments. You will implement NIST 800-53 controls, remediate vulnerabilities, and automate with Ansible, Terraform, and Jenkins.

Candidates must have DoD/regulatory exposure, CompTIA Security+ and Network+ certs, a STEM degree, and the ability to travel 20%. Strong collaboration with cyber, network, and mission teams is essential.

Qualifications

• Five or more years of experience in infrastructure engineering or related field.
• Experience administering VMware ESXi and vSAN environments.
• Experience deploying and maintaining RHEL and Windows Server environments.
• Experience with automation and IaC (Ansible, Terraform).
• Experience implementing security controls per DISA STIGs and NIST SP 800-53.
• Strong knowledge of on-premises cloud architectures and data center operations.
• Ability to remediate vulnerabilities in regulated environments.
• DoD/IC or government mission systems exposure is preferred.
• US citizenship and ability to obtain required clearance.

Responsibilities

• Design and administer secure infrastructure stacks in on-premises and private cloud.
• Manage VMware ESXi and vSAN virtualization platforms.
• Deploy and maintain RHEL 6/7/8 and Windows Server 2019/2022 systems.
• Automate system builds, patching, and hardening with Ansible, Jenkins, and related tools.
• Remediate vulnerabilities using ACAS, Nessus, Splunk, and similar tools.
• Support DoD/government mission systems and compliance documentation.
• Collaborate with engineering, cybersecurity, and mission teams in a classified environment.
• Maintain secure operations throughout development, accreditation, and operation lifecycles.

Skills

VMware ESXi Administration

RHEL System Administration

Ansible Automation

NIST SP 800-53 Compliance

CompTIA Security+ Certification

CompTIA Network+ Certification

ITIL Foundation

Education

Bachelor’s or Master’s in STEM

Tools

VMware vSAN

ACAS

Nessus

Splunk

Active Directory

Terraform

Jenkins

PDQ

Job description

• Design and administer secure Secret and Top Secret infrastructure stacks in on-premises and private cloud environments
• Design and administer large-scale VMware ESXi and vSAN virtualization platforms
• Deploy, configure, administer, and maintain RHEL 6/7/8 and Windows Server 2019/2022 systems
• Implement and remediate security controls according to NIST SP 800-53 and DISA STIG requirements
• Automate system builds, patching, configuration, and hardening using Ansible, Jenkins, PDQ, WSUS, and related tools
• Identify, track, and remediate vulnerabilities using ACAS, Nessus, Splunk, and other cybersecurity tools
• Support enterprise services including Active Directory, databases, Veeam, Horizon, Atlassian Suite, YUM repositories, and monitoring platforms
• Design and administer LAN/WAN and virtualized network backbones
• Troubleshoot complex routing issues involving OSPF and BGP
• Collaborate with engineering, cybersecurity, program, and mission teams
• Support Authorization to Operate packages, compliance documentation, control validation, and security audits
• Maintain secure and reliable environments throughout development, accreditation, and operational lifecycles

Requirements

• Five or more years of experience in infrastructure engineering, systems administration, network engineering, or a closely related technical field
• Experience administering VMware ESXi and vSAN virtualization environments
• Experience deploying, configuring, administering, and maintaining RHEL and Windows Server environments
• Experience with Ansible, Terraform, or related automation and Infrastructure as Code technologies
• Experience implementing or remediating security controls according to DISA STIGs and NIST SP 800-53
• Strong understanding of on-premises cloud architectures, enterprise virtualization, and secure data center operations
• Experience remediating vulnerability backlogs in classified, regulated, or compliance-driven environments
• Experience supporting Department of Defense, Intelligence Community, government mission systems, or similarly regulated environments
• Ability to work with infrastructure, networking, cybersecurity, software, and mission stakeholders in a classified environment
• Bachelor’s or master’s degree in a STEM field
• CompTIA Security+ certification or ability to obtain within 12 months of hire
• CompTIA Network+ certification or ability to obtain within 12 months of hire
• ITIL Foundation certification
• US citizenship required
• No dual citizenship
• Active TS with SCI eligibility
• Willingness to travel approximately 20% CONUS

Core Competencies

Demonstrates expertise in designing and administering secure infrastructure stacks, including VMware ESXi and vSAN environments, while implementing security controls in compliance with NIST SP 800-53 and DISA STIG requirements. Proficient in automating system management and vulnerability remediation in classified environments.

Highest-signal resume keywords

• VMware ESXi Administration
• RHEL System Administration
• Ansible Automation
• NIST SP 800-53 Compliance
• CompTIA Security+ Certification

ATS Optimization Keywords

Hard Skills

• Infrastructure Engineering
• Systems Administration
• Network Engineering
• Security Control Implementation
• Vulnerability Remediation
• Automation Technologies
• Cloud Architecture
• Routing Protocols
• Data Center Operations
• Compliance Documentation

Soft Skills

• Collaboration
• Problem-Solving
• Communication

Certifications & Qualifications

• CompTIA Security+
• CompTIA Network+
• ITIL Foundation

Industry Keywords

• Department of Defense
• Intelligence Community
• Classified Environments
• Regulated Environments
• Compliance-Driven Environments

Tools & Technologies

• VMware vSAN
• ACAS
• Nessus
• Splunk
• Active Directory
• Atlassian Suite
• Veeam
• Terraform
• Jenkins
• PDQ