HR Generalist (Part-Time)

Astrix; California; On-site; USD 34,000 - 55,000; Part time

Benefits offered by this job

Equity incentive

Job summary

Astrix in California is seeking an experienced HR Generalist (Part-Time) to manage day-to-day HR and administrative operations for a growing organization. The role covers payroll coordination, benefits, recruiting, onboarding, employee records, HR compliance, and office administration.

The initial commitment is about 15 hours per week with potential to grow to full-time. Location is Orange County with occasional travel for in-person meetings and quarterly check-ins.

Qualifications

• Bachelor's degree in HR, Business Administration, or related field (or equivalent experience).
• 7+ years of combined HR and administrative experience, including supervision.
• Experience with payroll, benefits, recruiting, onboarding, and multi-state HR compliance.
• Familiarity with HR/payroll systems (ADP preferred) and document management tools.

Responsibilities

• Manage onboarding, offboarding, personnel records, and HR documentation.
• Coordinate recruiting, job postings, interviews, offers, and hiring processes.
• Support performance reviews, employee relations, policies, and communications.
• Maintain handbooks, job descriptions, and HR procedures.
• Coordinate payroll processing with payroll provider and finance team.
• Administer benefits enrollment, PTO, leave tracking, and changes.
• Maintain compensation records and headcount reporting.
• Manage multi-state HR compliance calendars and required filings.
• Coordinate workers' compensation and workplace safety administration.
• Supervise and coordinate a part-time administrative assistant.
• Manage office administration, vendors, travel, and meeting logistics.
• Maintain contracts, subscriptions, and shared documents systems.
• Develop efficient administrative workflows and checklists.

Skills

Payroll

Benefits administration

Recruiting

Onboarding

HR compliance

Employee relations

Communication

Organizational skills

Multi-state HR

Education

Bachelor's degree in HR/BA or related field

Equivalent experience

Tools

ADP

Microsoft 365

Google Workspace

Document management tools

Job description

We are seeking an experienced HR Generalist (Part-Time) to oversee day-to-day human resources and administrative operations for a growing organization.

This role will manage payroll coordination, benefits, recruiting, onboarding, employee records, HR compliance, and office administration while establishing efficient processes to support future growth.

The initial commitment is approximately 15 hours per week, with potential to expand to full-time based on business needs and individual interest.

• Location: Orange County.
• Hours: Approximately 15 hours per week, with flexible scheduling.
• Availability: Monday–Friday, 8:30 a.m.–5:00 p.m. PT, as needed.
• Required Meeting: Tuesdays, 1:30–3:30 p.m. PT.
• Travel: Occasional in-person meetings, approximately quarterly, with advance notice.
• Growth: Potential to expand to full-time.
• Equity: Potential long-term equity incentive

Key Responsibilities

• Manage employee and contractor onboarding, offboarding, personnel records, and HR documentation.
• Coordinate recruiting, job postings, interviews, offers, and hiring processes.
• Support performance reviews, employee relations, policies, and employee communications.
• Maintain employee handbooks, job descriptions, organizational records, and HR procedures.
• Coordinate payroll processing with the payroll provider, Controller, and bookkeeper.
• Administer benefits enrollment, PTO, leave tracking, and employee changes.
• Maintain compensation records and support headcount and personnel expense reporting.
• Manage multi-state HR compliance calendars, required filings, notices, and employment documentation.
• Coordinate workers' compensation and workplace safety administration.
• Supervise and coordinate a part-time administrative assistant.
• Manage office administration, vendors, supplies, equipment, travel, and meeting logistics.
• Maintain contracts, subscriptions, business records, and shared document systems.
• Develop efficient administrative workflows, checklists, and tracking systems.

Requirements

• Bachelor's degree in HR, Business Administration, or related field, or equivalent experience.
• 7+ years of combined HR and administrative experience, including two years managing a function or supervising others.
• Experience supporting a small/start-up organization is preferred.
• Strong hands-on experience with payroll, benefits, recruiting, onboarding, and multi-state HR compliance.
• Familiarity with HR/payroll systems (ADP preferred), Microsoft 365 or Google Workspace, and document management tools.
• Excellent organizational, communication, problem-solving, and interpersonal skills.
• Experience in healthcare, consumer health, life sciences, or regulated industries is a plus.
• SHRM, PHR, or similar HR certification is preferred.