Bachelor's degree in HR, Business Administration, or related field, or equivalent experience
3-5 years of HR generalist experience in manufacturing or technical settings
Experience with employee relations, recruiting, onboarding, and benefits administration
Solid understanding of California employment law and compliance
Proficient in HRIS, preferably ADP Workforce Now
Excellent communication skills for diverse, multilingual interactions
Ability to manage multiple priorities in a fast-paced environment
Responsibilities
Serve as the primary HR contact at the Chino site, fostering trusted relationships
Champion a high-performance culture by proactively addressing employee engagement
Support managers through performance management and conflict resolution
Conduct new hire orientations and glean insights from exit interviews
Manage leave of absence cases in compliance with relevant laws
Oversee full-cycle recruiting, from sourcing to onboarding
Administer payroll, benefits programs, and maintain employee records
Benefits
Competitive medical, dental, and vision insurance
Company-sponsored 401(k) plan with employer match
Direct impact on employee experience in a site ownership role
Part of a collaborative, small HR team
Located in Chino, CA with an affordable cost of living and access to outdoor activities
Full Job Description
HR Manager
Full-time • On-site
We are seeking an HR Manager who will serve as the primary HR presence and a key contributor to building a healthy, high-performing team in a dynamic, multicultural manufacturing and engineering environment. This role reports directly to the Director of HR and is an ideal first step into HR management for a high-performing generalist ready for site ownership, someone energized by building culture, solving real problems, and being the person employees and managers trust.
WHAT YOU'LL DO
Employee Relations & Culture
Serve as the primary HR point of contact for the Chino site, building trusted relationships with employees and managers across a diverse, multicultural workforce
Champion a positive, high-performance culture by proactively identifying engagement opportunities, addressing concerns early, and modeling inclusive, respectful workplace practices
Support managers in navigating employee relations matters including performance management, conflict resolution, corrective action, and terminations
Conduct new hire orientations and exit interviews; use insights to inform retention and engagement strategies
Manage leave of absence cases for assigned locations, including applicable Federal and California State leave laws (FMLA, CFRA, SDI, PFL, etc.)
Recruiting & Onboarding
Manage full-cycle recruiting for assigned roles - sourcing, screening, scheduling, interviewing, offer preparation, background checks, and onboarding
Partner with hiring managers on job descriptions, salary benchmarking, and interview best practices
Lead new hire onboarding to ensure a consistent, welcoming experience that sets employees up for success from day one
HR Operations & Compliance
Support payroll processing and timesheet administration in coordination with the HR Operations Manager; serve as backup for payroll processing as needed
Administer day-to-day benefits programs (health, dental, vision, FSA, HSA, 401(k), disability, COBRA) and serve as the primary contact for employee benefit inquiries for employees at assigned locations
Maintain accurate employee records in ADP Workforce Now (HRIS), including personnel files, I-9s, and E-Verify compliance
Ensure compliance with California and Federal employment law, including labor law postings, wage orders, and policy updates driven by legislative changes
Coordinate and deliver compliance training programs; schedule and administer training via ADP LMS
Support EEO data collection and AAP compliance efforts
Training, Development & Special Projects
Identify training and development needs at the site level; coordinate and deliver HR-related training to individuals and groups
Support HR special projects, performance management cycles, and other initiatives as directed by the Director of HR
Partner with the broader HR team to share best practices and drive consistency across Luna's US locations
REQUIRED QUALIFICATIONS
Bachelor's degree in Human Resources, Business Administration, or a related field, or equivalent experience
3-5 years of HR generalist experience, ideally in a manufacturing or technical environment
Demonstrated experience with employee relations, recruiting, onboarding, and benefits administration
Strong working knowledge of California employment law, including leave laws, wage and hour requirements, and EEO compliance
Proficiency with HRIS systems; ADP Workforce Now experience strongly preferred
Excellent verbal and written communication skills; ability to communicate clearly and build trust across a diverse, multilingual workforce
Ability to operate autonomously, manage competing priorities, and exercise sound judgment in a fast-paced environment
Culturally agile, experience working in or supporting a diverse workforce with varying cultural backgrounds and communication styles
DESIRED QUALIFICATIONS
HR certification (PHR, SHRM-CP, or equivalent) preferred
Experience supporting a multicultural workforce with a focus on cultural inclusion and team effectiveness
Bilingual in English and Mandarin or Cantonese (a meaningful plus, not required)
Familiarity with payroll processing (ADP or similar)
Experience with multi-site HR support
Experience supporting NPI or manufacturing ramp environments
WHY LUNA
Here's what you can expect:
Competitive compensation & benefits: comprehensive medical, dental, and vision insurance, plus a company-sponsored 401(k) with employer match
Direct impact: you'll be the HR presence on the ground your work will directly shape the employee experience
First manager role: this is an ideal next step for a high-performing HR generalist ready to take on site ownership and put their full skill set to work in a complex, people-first environment
Collaborative team: you'll be part of a small, close-knit HR team that values expertise, initiative, and getting things done
Southern California location: Chino, CA offers an affordable cost of living relative to the broader LA metro, with easy access to outdoor recreation, a diverse community, and all that Southern California has to offer
TRAVEL
This role is based on-site in Chino, CA. Travel to our Santa Clara, CA location is expected approximately once per quarter. Additional travel to other Luna locations is anticipated approximately once per year. Overall travel requirement is estimated at 15-20%.
