GrayMatter Robotics
HR & Payroll Generalist
$120K–$180K
Los Angeles - HQ · On-site · Full-time · Posted Oct 28, 2026
- Experience
- 6+ years in HR, people operations, or similar; 2+ years building company-wide processes from scratch within the same company; 2+ years at a technology startup or technology company.
- Education
- Bachelor's or Master's degree in a related field preferred; no required education stated.
- Visa sponsorship
- Must have authorization to work in the United States and maintain ongoing work authorization from time of hire through the duration of employment.
About the job
Own the employee experience and HR operations, including payroll, benefits, compliance, employee relations, and HR systems, while building scalable processes and using automation.
What you'll do
- Manage employee lifecycle, engagement, onboarding, offboarding, and employee relations.
- Run payroll, reconcile benefits, administer leave, and maintain multi-state compliance and audit readiness.
- Own HRIS configuration, workflows, reporting, and process automation, including AI-enabled HR workflows.
What they ask for
- 6+ years of experience in HR, people operations, or similar roles; 2+ years building company-wide processes from scratch at the same company; and 2+ years at a technology startup or technology company.
- Knowledge of multi-state employment compliance, especially California, and rules for hourly, contractor, and salaried employees.
- Power-user proficiency in UKG or a comparable HRIS, including configuration, reporting, and workflow or email templates; demonstrated fluency using AI tools for HR work.
- Ownership of payroll administration and benefits reconciliation; track record guiding managers through difficult personnel decisions; authorization to work in the United States and maintain it throughout employment.
Nice to have
- Degree in a related field; experience in both startup and enterprise environments; HR certification.
- Experience with WEX, Ashby, Ethena, ClickUp, Notion, Scribe, Airtable, Slack integrations, or HR automation platforms.
Pay
$120K – $180K (USD, base salary; range)
Tools
UKG, ADP, Paylocity, Workday, Claude, WEX, Ashby, Ethena
AI focus
Use AI and automation tools to accelerate HR work and streamline reporting, audits, communications, and repetitive workflows.
Model-written summary · the original posting is authoritative