Sr. Human Resources Manager

AMG is seeking an experienced, highly organized Human Resources Manager to oversee the people function across our growing portfolio of companies. This is a hands-on role responsible for the full employee lifecycle, including employment compliance, employee relations, recruiting, payroll, benefits, performance management, OSHA/workplace safety, employee engagement, company events, travel coordination, and employee technology onboarding/offboarding. The ideal candidate is proactive, resourceful, comfortable working directly with executives, and capable of balancing people, compliance, culture, and business needs within a fast-growing, remote organization. Key Responsibilities Serve as AMG's primary internal resource for day-to-day HR and employment compliance across multiple companies. Maintain strong working knowledge of California, federal, and multi-state employment laws , including wage and hour, leaves and accommodations, anti-harassment/discrimination requirements, and worker classification. Oversee applicable OSHA and workplace safety compliance , including required documentation, postings, training, recordkeeping, and safety procedures. Develop, implement, audit, and maintain employee handbooks, HR policies, SOPs, personnel files, and compliance procedures. Monitor changes in employment laws and proactively recommend necessary policy or operational updates. Manage employee relations , including complaints, workplace investigations, disciplinary actions, performance concerns, terminations, and documentation. Coach managers and leadership on performance management, employee relations, documentation, and employment risk. Manage the end-to-end recruiting process , including job descriptions, sourcing, screening, interviews, compensation benchmarking, offers, background checks, I-9/E-Verify, and onboarding. Own the bi-weekly payroll process , including employee changes, deductions, withholdings, and applicable domestic/international contractor payments. Manage employee benefits, coordinate with payroll providers, brokers, accounting, and outside partners. Oversee state employer registrations and respond to payroll, tax, and employment agency notices. Review employee and contractor classifications and identify potential compliance risks. Develop and manage performance reviews, performance improvement processes, training, and employee-development initiatives. Track HR KPIs and provide monthly reporting on headcount, hiring, turnover, retention, payroll, employee relations, compliance, and workforce trends. Conduct HR audits and support scalable HR infrastructure as AMG continues to grow. Support company events, team-building initiatives, and retreats as needed. Partner with outside employment counsel when specialized legal guidance is require Skills, Knowledge and Expertise 3+ years of progressive HR experience , preferably as an HR Manager, Senior HR Generalist, HR Business Partner, or similar role. Strong hands-on knowledge of California employment law and HR compliance. Experience supporting multi-state employees and knowledge of applicable federal employment regulations. Practical experience with OSHA/workplace safety compliance. Proven experience handling employee relations, workplace investigations, disciplinary actions, performance issues, and terminations. Experience with payroll (Gusto experience is a plus), benefits administration, recruiting, onboarding, and HRIS systems. Strong understanding of wage-and-hour requirements and employee vs. independent contractor classification. Experience creating and implementing employee handbooks, policies, SOPs, and HR processes. Excellent judgment, discretion, communication, and documentation skills. Ability to confidently work with executives while managing HR responsibilities across multiple companies. Preferred: Bachelor's degree in HR, Business Administration, or related field; SHRM-CP/SCP, PHR/SPHR, PHRca, or similar certification; and experience within a multi-entity, professional services, financial services, tax/accounting, wealth management, media, or other regulated organization. Benefits Medical, dental, vision, and life insurance Paid vacation and sick time Paid holidays 401(k) with match Work from home