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Salary: USD 184,000 - 208,000 / annual
Muon Space, a LEO satellite constellation provider founded in 2021, seeks a Senior Security Engineer to join its Security Engineering & IT team. This hybrid role (3 days/week on-site in San Jose, CA, or fully remote from approved US locations) focuses on protecting infrastructure, data, and people across multiple security domains.
Key responsibilities include designing and managing endpoint security solutions (EDR/XDR) for macOS and Windows fleets; owning network security architecture including firewalls, IDS/IPS, segmentation, and VPN; leading vulnerability management programs with scan prioritization and remediation tracking; administering IAM systems (Okta, AWS IAM) with SSO and conditional access policies; developing SIEM-based security monitoring and detection rules; conducting security assessments of new tools and architectural changes; managing cloud security posture across AWS (IAM, S3, security groups, CloudTrail, GuardDuty); supporting CMMC Level 2 and NIST SP 800-171 compliance including SSP documentation and assessment preparation; delivering security awareness training and phishing simulations; leading incident response activities; maintaining DLP controls for controlled unclassified information (CUI); and contributing to security policy development.
Required qualifications: 5+ years in information security or security engineering; hands-on experience with EDR platforms (CrowdStrike, SentinelOne); enterprise vulnerability scanning tools (Tenable, Qualys, Rapid7); IAM administration (Okta or Azure AD); AWS cloud security (IAM, VPC, Security Groups, CloudTrail, GuardDuty, Config); SIEM platforms (Splunk, Sentinel, Elastic); networking fundamentals (firewalls, proxies, DNS, segmentation, packet analysis); familiarity with compliance frameworks (NIST 800-171, CMMC, SOC 2, ISO 27001); and strong communication skills.
Nice-to-have: relevant certifications (CISSP, GIAC, CEH, AWS Security Specialty); infrastructure-as-code security (Terraform, CloudFormation); CI/CD pipeline security; ITAR/EAR export control experience.
