Senior Security Risk Engineer – Lead Risk & Compliance (Remote/Hybrid)

Muon Space, Inc.; San Jose (CA); Hybrid; USD 154,000 - 207,000; Full time

Benefits offered by this job

Equity compensation

Medical insurance

Dental insurance

Vision insurance

401k

Disability insurance

Life insurance

Paid vacation

Paid holidays

Sick leave

Parental leave

Job summary

Muon Space, Inc. is seeking a Senior Security Risk Engineer to join our Security Engineering & IT team. You will lead security risk assessments and maintain a risk register, working with engineering, IT, operations, finance, and the supply chain to drive remediation and provide leadership with a clear view of risk posture.

The role may be fully on-site at our San Jose office, hybrid, or fully remote from an approved U.S. location.

Qualifications

• 5+ years in information security, security engineering, or security risk/GRC roles.
• Hands-on experience running security risk assessments and managing a risk register.
• Strong understanding of security risk frameworks and methodologies (e.g., NIST RMF / 800‑30, FAIR, or similar).
• Familiarity with compliance frameworks such as NIST 800-171, CMMC, SOC 2, or ISO 27001.
• Excellent written and verbal communication skills — able to convey risk and priorities to both engineers and leadership.

Responsibilities

• Lead security risk assessments across the company — identify, analyze, and prioritize risks across engineering, IT, operations, and business functions.
• Maintain a risk register and a clear, current view of Muon's risk posture for leadership.
• Partner with teams across the company to drive remediation of identified risks and track them to closure.
• Assess the security risk of new tools, vendors, third parties, and architectural or process changes before adoption.
• Define and apply a consistent risk framework and methodology — likelihood and impact scoring, risk acceptance, and exceptions.
• Map risks and controls to compliance requirements such as NIST 800-171 and CMMC, and support audits and assessments.
• Report risk trends and metrics to leadership and recommend where to invest to reduce the most risk.
• Help teams build risk-aware processes and take ownership of the risks they hold.

Skills

Security risk management

Risk assessments

Communication skills

Security frameworks

Job description

Muon Space, Inc. is seeking a Senior Security Risk Engineer to join our Security Engineering & IT team. You will lead security risk assessments and maintain a risk register, working with engineering, IT, operations, finance, and the supply chain to drive remediation and provide leadership with a clear view of risk posture.

The role may be fully on-site at our San Jose office, hybrid, or fully remote from an approved U.S. location.