About the role Muon seeks a Cybersecurity Compliance Lead to join our team. The ideal candidate is a cybersecurity compliance leader who has interfaced directly with government cyber security teams and has worked inside organizations that must meet federal security requirements. In this role you will own our compliance posture against frameworks such as NIST 800-171 and NIST 800-53, and ensure the proper handling and protection of Controlled Unclassified Information (CUI) as well as export-controlled EAR and ITAR data. You will serve as the primary liaison to government security stakeholders, lead assessments and audits, and drive continuous improvement of our security controls across the organization. This role may be worked remotely from an approved location within the United States. Responsibilities Own and mature the organization's cybersecurity compliance program against NIST 800-171 and NIST 800-53. Serve as the primary liaison to government cyber security teams, assessors, and sponsors, and represent the company in audits and reviews. Lead the development, maintenance, and continuous improvement of System Security Plans (SSPs), POA&Ms, and supporting compliance documentation. Establish and enforce controls for the handling, storage, and transmission of Controlled Unclassified Information (CUI). Ensure compliance with EAR and ITAR export-control requirements across systems, data, and personnel. Conduct security control assessments, gap analyses, and risk assessments, and drive remediation to closure. Partner with IT, Security, Engineering, and Legal teams to embed compliance requirements into systems and processes. Prepare the organization for third-party assessments and government accreditation efforts such as CMMC. Supporting RMF/ATO packages for sponsor-accredited systems, and compliance for classified information systems (ISSM/ISSO-type duties) in coordination with the facility security officer. Qualifications 8+ years of experience in cybersecurity compliance, information assurance, or a closely related field. Demonstrated experience interfacing with government cyber security teams and working at a company required to meet government security requirements. Hands-on experience implementing and assessing NIST 800-171 and NIST 800-53 controls. Experience handling and protecting Controlled Unclassified Information (CUI). Working knowledge of EAR and ITAR export-control regulations. Experience developing and maintaining compliance artifacts such as System Security Plans (SSPs) and POA&Ms. Active U.S. security clearance, TS/SCI preferred. Hands-on RMF experience including ATO package development, familiarity with NISPOM / 32 CFR Part 117. Proactive, reliable, and able to work with minimal supervision. Nice-to-have Skills Experience leading CMMC readiness or certification efforts. Experience supporting DoD or other U.S. Government programs. Familiarity with DFARS, FedRAMP, or CMMC requirements. Relevant certifications such as CISSP, CISM, CAP. Salary The salary range for this role is $145,000 - $207,000, plus a competitive equity grant and comprehensive benefits package. Final compensation will be determined based on skills, qualifications, experience, and geographic location as assessed during the interview process. About Muon Space Founded in 2021, Muon Space is an end-to-end Space Systems Provider that designs, builds, and operates LEO satellite constellations delivering mission-critical data. Our revolutionary, integrated technology stack enables customers to optimize every dimension of their missions for faster time-to-orbit and superior constellation remote sensing performance. Our state-of-the-art facility in the heart of Silicon Valley is optimized for manufacturing spacecraft and rapid, flexible payload integration at scale. From climate monitoring to national security, Muon Space is dedicated to delivering Earth Intelligence for a safer and more resilient world. Taking Care of Our Team At Muon salary is only part of our total compensation package. In addition to salary, full-time employees receive equity compensation as well as benefits including medical, dental, and vision insurance, a 401k retirement plan, short & long term disability and life insurance. We also offer three weeks paid vacation for new employees, along with 12 paid holidays, unlimited sick time and paid parental leave. Our mission embraces the entire planet and we believe our team should too. Muon is dedicated to creating a diverse and dynamic company and workforce. We believe in equal employment opportunity regardless of race, color, ancestry, religion, sex, age, national origin, citizenship, sexual orientation, marital status, disability, or gender identity. We value diversity in the workplace, and that starts with our applicants. We encourage you to apply, even if you don't check all the boxes, and we look forward to reviewing your application! In addition, if you need a reasonable accommodation as part of your application for employment or interviews with us, please let us know. ITAR/EAR Requirements This position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. The Company may, for legitimate business reasons, decline to pursue any export licensing process.