Captivation Software
Systems Engineer 3 - Linux/PKI/Crypto/SSP/STE/STN/AWS
About this role
Captivation Software seeks a mid-level systems engineer with 6+ years of experience to support infrastructure operations involving Linux, PKI/cryptography, cloud platforms, and government security compliance. The role requires an active Top Secret/SCI clearance and focuses on container/virtualization environments, storage management, networking, and secure system administration.
What you'll do
- Support Linux systems administration and troubleshooting across cloud and containerized environments
- Manage PKI, TLS, and cryptographic policies on systems to ensure compliance
- Administer and maintain virtualization and storage infrastructure
- Implement and support SSP compliance and STE/STN security protocols
- Configure and maintain IP networking, firewall policies, and connectivity
- Provide application support and general infrastructure troubleshooting
What they're looking for
- Linux system administration
- PKI/TLS/cryptographic policies
- Cloud and container technologies (AWS, Kubernetes, Docker)
- Storage management and configuration
- Virtualization platforms
- IP networking and firewall management
- Automation tools
- Government security compliance (SSP, STE/STN)
Benefits
- Annual salary $130,000–$270,000 based on experience
- Up to 20% 401(k) contribution, vested immediately
- Employer-paid medical, dental, vision, and life insurance
- $3,600 HSA annual contribution
- 6 weeks paid time off annually
- Short-term and long-term disability coverage
Opens the application — the Jobs AI extension fills it for you. Set up autofill
Opens the official application on the employer’s site. No login required.
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.
View all jobs at Captivation SoftwareLikely interview questions
- Describe your experience implementing and managing PKI infrastructure and cryptographic policies in production Linux environments.
- How have you approached securing and hardening Linux systems to meet government compliance standards like SSP or DISA guidelines?