Senior Systems Security Engineer - Cyber Engineer with Active Secret Clearance

Senior / Principal Systems Security Engineer - Cyber Engineer


Fullerton, CA | Onsite
$87.55 - $98.80/hr (W2)
1st Shift
Contract: 6 Months (Possible Extension)

US Citizenship & Active Secret Clearance Required


Donatech Corporation is seeking experienced Systems Security Engineers / Cyber Engineers to support Raytheon Technologies (RTX) in Fullerton, CA. This role supports the Systems Security Engineering (SSE) team responsible for protecting critical defense systems and ensuring cybersecurity compliance across embedded weapons platforms.


You will work on highly visible defense programs focused on protecting the warfighter's technological advantage by implementing cybersecurity and system security engineering solutions across the product lifecycle.

Key Responsibilities
• Support implementation of Systems Security Engineering (SSE) solutions within RTX products
• Develop and maintain Risk Management Framework (RMF) documentation for Authority to Operate (ATO)
• Perform analysis of cybersecurity test data and security assessment results
• Validate secure configuration of network devices, servers, operating systems, applications and infrastructure
• Conduct vulnerability assessments using tools such as Nessus, STIG, Evaluate STIG, and RADIX
• Ensure compliance with NIST RMF cybersecurity controls
• Develop and implement system security architecture and secure system designs
• Create cybersecurity artifacts such as patch media, security documentation, and information assurance reports
• Support program protection implementation for embedded defense systems
• Participate in system security requirements, design reviews, and cybersecurity integration activities
• Collaborate with program management, engineering teams, suppliers, and customers on security solutions
• Support proposal development, planning, project tracking, and risk mitigation strategies (Principal level)


Basic Qualifications (Senior - P3)
• Bachelor's degree in STEM (Science, Technology, Engineering, Mathematics)
• 5+ years of experience in cybersecurity, systems security engineering, or embedded system security
• Experience supporting DoD cybersecurity programs
• Experience with RMF, NIST security controls, and ATO accreditation processes
• Experience generating security requirements, design artifacts, and security plans
• Active Secret Security Clearance required prior to start
• Experience using DoD cybersecurity assessment tools (Nessus, STIG, Evaluate STIG, RADIX)


Additional Qualifications (Principal - P4)
• 8+ years of relevant experience in Systems Security Engineering or Cybersecurity
• Experience designing and implementing secure embedded system solutions for DoD programs
• Experience leading cybersecurity engineering activities or teams
• Experience with Red Hat Enterprise Linux (RHEL) environments
• Experience defining system security architectures and security implementation strategies
• Experience interacting with customers and program management to define security solutions


Preferred Qualifications
• Cybersecurity certifications such as CISSP, CEH, GSLC (DoDD 8570 / DoDD 8140 compliant)
• Experience with Linux Bash or Python scripting
• Experience supporting defense aerospace programs
• Strong analytical, collaboration, and communication skills
• Experience working with embedded systems security and supply chain risk management


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