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Sierra Nevada Corporation

Global aerospace and defense contractor

Systems Security Engineer 3

Security Engineering & Architecture +1Confirmed live in the last 24 hours
Full-timeLone Tree, CO, USA$131k - $180.1k

About the Job

Requirements

  • A bachelor's degree in Systems Security, Network Engineering, Information Technology, or a related engineering discipline is required, though relevant experience may substitute; without a degree, at least 9 years of related experience is required. A higher-level relevant degree may substitute for experience.
  • At least 5 years of experience in IT security or a related field is required.
  • Advanced understanding of cybersecurity principles and practices is required.
  • Experience with security frameworks and standards such as NIST and ISO 27001 is required.
  • An Information System Security Officer (ISSO), Security+, Certified Information Systems Auditor (CISA), or CompTIA Advanced Security Practitioner (CASP+) certification is required.
  • Current/active Secret U.S. security clearance and ability to obtain Top Secret U.S. security clearance with SCI eligibility are required; U.S. citizenship is required.
  • Ability to work primarily at a computer for extended periods, participate in an on-call incident-response rotation, and occasionally lift up to 25 pounds is required.

Responsibilities

  • Lead the design and implementation of secure IT infrastructure.
  • Build and harden Windows virtual machines, Active Directory domains, and hypervisors using strict security baselines and best practices.
  • Maintain the security of the Active Directory forest, including managing trust relationships, domain controllers, and certificate services (PKI).
  • Create, test, and deploy strict Group Policy Objects (GPOs) to enforce security settings across Windows servers and workstations.
  • Perform advanced security monitoring and threat analysis.
  • Direct and manage complex incident response and digital forensics.
  • Conduct in-depth risk and vulnerability assessments.
  • Develop and enforce comprehensive security controls and protocols.
  • Research, evaluate, and recommend new security technologies.
  • Oversee security breach documentation and impact analysis.
  • Provide mentorship and guidance to junior security engineers.

Desired Qualifications

  • Information Systems Security Engineer Certified Authorization Professional (ISSE CAP) certification.
  • Microsoft Certified Solutions Expert (MCSE), Linux, and/or Cisco Certified Network Professional (CCNP) Security certification.
  • Experience with security tools such as firewalls, intrusion detection systems, and antivirus software.
  • Experience in the aerospace or defense industry.

About the Company

Sierra Nevada Corporation

Global aerospace and defense contractor

Sierra Nevada Corporation is a private, global aerospace and national security company serving the U.S. government and other customers with complex engineering projects. Its products include the Dream Chaser spaceplane, a reusable, runway-landing spacecraft developed after SpaceDev’s 2008 acquisition to carry cargo and later crew to low-Earth orbit under NASA contracts. The company differentiates itself through a long-term, acquisition-driven growth strategy, steady execution, and private ownership by the Ozmen family, with the Sierra Space spin-off in 2021 focusing on spaceflight and commercial ventures. Its goal is to solve tough engineering challenges for customers and become a leading partner in defense and space exploration.

Company size
1,001-5,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Sparks, NV
Founded
1963

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