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Captivation Software

Systems Engineer 3 - Linux/PKI/Crypto/SSP/STE/STN/AWS

Annapolis Junction, MD$130k–$270kfull-timemidAdded 3 days ago

About this role

Captivation Software seeks a mid-level Systems Engineer with 6+ years of experience to support infrastructure and security operations in a cleared defense environment. The role focuses on Linux systems, PKI/cryptography, cloud platforms, and compliance with specialized security protocols.

What you'll do

  • Manage and support Linux systems with emphasis on PKI, TLS, and cryptographic implementations
  • Deploy and maintain containerized and cloud-based infrastructure environments
  • Implement SSP compliance and provide STE/STN support on Linux platforms
  • Configure and troubleshoot IP networking, firewalls, virtualization, and storage systems
  • Provide application-level support and general infrastructure troubleshooting
  • Utilize automation tools to enhance operational efficiency and system reliability

What they're looking for

  • Linux system administration
  • PKI/TLS/cryptography and crypto policies
  • Containers and cloud environments (AWS preferred)
  • Virtualization and storage management
  • IP networking and firewall configuration
  • SSP compliance and STE/STN protocols
  • Automation tools
  • Application support and troubleshooting

Benefits

  • Annual salary $130,000–$270,000 based on experience
  • Up to 20% 401(k) contribution, vested immediately
  • $3,600 HSA contribution
  • 6 weeks paid time off
  • Fully company-paid health, dental, vision, life, and disability insurance
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Captivation Software

Captivation Software builds high-performance computing and secure analytics infrastructure for mission-critical government programs, specializing in HPC testing, enterprise dataflow architectures, and cleared defense systems. The company is hiring senior test engineers, systems engineers, and technical leaders with deep expertise in Linux, cloud infrastructure, and security clearances to validate systems and architect solutions for intelligence community operations.

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Likely interview questions

  • Can you walk us through your experience implementing and troubleshooting PKI and TLS certificates in production Linux environments?
  • Describe your hands-on experience with container and cloud platforms—what have you deployed and what challenges did you encounter?
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