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Salary: USD 140,000 - 200,000 / annual
CHAOS Industries, a defense technology company founded in 2022 and backed by $1B in funding from 8VC, Accel, and Valor Equity Partners, is seeking a Senior Linux Systems Administrator to design, build, secure, and operate Linux infrastructure for engineering and program teams in a defense environment.
You will serve as a technical lead within the IT organization, owning the Linux server environment across physical, virtual, and cloud platforms. Your responsibilities include architecting and maintaining Linux server environments (Red Hat and Debian families); designing automation and configuration management using Ansible, shell, and Python; building hardened, standardized server images aligned to DISA STIG and CIS benchmarks; managing Linux storage, networking, and system tuning; integrating systems with enterprise identity services (Active Directory, LDAP, Kerberos, SSSD); deploying workloads in Azure and AWS; serving as technical escalation point for complex incidents; mentoring junior administrators; leading infrastructure projects including platform migrations and site buildouts; owning backup, disaster recovery, and business continuity design; monitoring system health and logs; supporting compliance requirements (CMMC, NIST SP 800-171, FedRAMP); reviewing technical designs and changes; evaluating tools and technologies; creating documentation and runbooks; and participating in on-call rotation. Travel is minimal (approximately 10%). Physical demands are primarily sedentary with occasional equipment lifting up to 25 lbs.
RESQUIREMENTS:
- Bachelor's degree in Information Technology, Computer Science, Information Systems, or related field, or equivalent work experience
- 7+ years of progressive experience administering enterprise Linux server environments (RHEL, Rocky, CentOS, Ubuntu, Debian)
- Expert command-line and troubleshooting skills with deep knowledge of systemd, networking, storage (LVM, file systems, NFS), and performance tuning
- Strong scripting and automation skills in Bash and Python; experience with Ansible
- Experience hardening Linux systems and remediating vulnerabilities in regulated environments, including SELinux, auditd, DISA STIG/CIS baselines, NIST SP 800-171, CMMC
- Experience integrating Linux with enterprise identity (Active Directory, LDAP, Kerberos, SSSD) and managing SSH, sudo, privileged access
- Experience owning patch management, monitoring, backup and disaster recovery, including restore testing
- Track record of leading infrastructure projects and mentoring engineers; strong documentation and communication skills
- U.S. person status required for access to CUI and export-controlled data (ITAR/EAR)
PREFERRED:
- Experience running Linux in Azure, AWS, Azure Government, Microsoft GCC High environments
- Experience with containers and orchestration (Docker, Podman, Kubernetes) and virtualization (KVM, VMware)
- Linux or cloud certifications (RHCSA, RHCE, LFCS, Azure/AWS Associate-level) or security certifications (Security+, CISSP)
- Infrastructure as code and CI/CD tooling experience (Terraform, Git-based workflows)
- Experience supporting CMMC, NIST 800-171, FedRAMP assessments; active U.S. government security clearance or ability to obtain one
