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Platform Network Engineer II with Security Clearance

Cornerstone Defense
Aurora, CO Full Time
POSTED ON 12/12/2025 CLOSED ON 1/11/2026

What are the responsibilities and job description for the Platform Network Engineer II with Security Clearance position at Cornerstone Defense?

Infrastructure Engineer Aurora, CO Active TS/SCI w/ Poly Compensation Range: $95,000 - $115,000 Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense. Job Responsibilities:

  • You will leverage company and industry best practices and capabilities to design, deploy, implement, modernize, and support scalable network solutions
  • You will support Network designs & development related activities, optimizing for performance and scalability across multiple computing environments
  • You will utilize your Linux skills at the command line to deploy updates and change products for Cisco based network systems to support program needs
  • You will provide guidance on network resource allocation, utilization, and optimization
  • You must be a strong troubleshooter with experience in network issue mitigation as well as prevention Basic Quals:
  • Typically requires BS/BA Degree in Science, Technology Engineering Math (STEM) in Computer Science, Computer Engineering, Information Technology or Physics and 3 years of related work experience
  • Experience with Linux System Administration (E.g. RHEL 6.0 )
  • Experience with VMWare and related virtualized systems
  • Comp TIA Security within 90 days after starting in the role
  • Current TS/SCI with CI Poly security clearance is required day 1. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Preferred Quals:
  • Advanced Experience configuring, deploying, and supporting network systems (E.g. Cisco, Cisco Nexus, Cisco ASA, Brocade)
  • Experience Troubleshooting Layer 2 and Layer 3
  • Experience with Firewall Implementation and knowledge
  • Scripting in Python (preferred); Bash, Shell
  • Experience integrating with identity management, access management, and authorization solutions (PKI, LDAP).
  • Experience with Agile Development Methodologies (E.g.: Scrum, SAFe).
  • Experience with scanning tools
  • Basic Experience Using Automation Frameworks

Salary : $95,000 - $115,000

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