Senior People Business Partner

Join Muon, a growing organization, as a Senior People Business Partner. In this full-stack role, you will architect and implement critical People Ops initiatives, partner with managers to build leadership capability, and handle complex employee relations with discretion and empathy. You will report to the VP of People Operations and play a key role in fostering a positive workplace culture. Benefits include comprehensive health coverage, parental leave, generous time off, a 401(k) plan, and a dog-friendly office.

• Architect and implement critical People Ops initiatives, from initial design through final launch.
• Partner directly with directors and frontline managers to build manager capability, serving as a warm, grounded coach on leadership best practices.
• Act with high autonomy to identify, diagnose, and resolve company culture vulnerabilities and complex personnel challenges before they impact the business.

• Manager Enablement: Demonstrated success designing, facilitating, and driving manager development initiatives and coaching leadership cohorts
• Experience: 6–10+ years of progressive HRBP or People Operations experience in fast-paced environments, with a proven track record of full-stack ownership (both strategic design and tactical implementation)
• Autonomy & Drive: Proven ability to translate broad business goals into actionable project roadmaps and execute independently with minimal direction
• Warmth & Interpersonal Skills: Outstanding verbal and written communication skills with a natural approachability, high emotional intelligence, warmth, and a customer-service mindset
• Systems and Documentation: Hands-on experience architecting and managing modern HR systems (Rippling, Lattice) and building out accessible and clear documentation (Google Workspace, Confluence)
• Problem Solving & Discretion: Exceptional judgment when navigating ambiguous employee relations matters, maintaining absolute confidentiality and security around sensitive personnel data
• We encourage you to apply, even if you don't check all the boxes, and we look forward to reviewing your application!