Senior Human Resources Manager - Manufacturing

JSG (Johnson Service Group, Inc.); Garden Grove (CA); On-site; USD 130,000 - 150,000; Full time

Benefits offered by this job

Medical, dental, vision

401(k) with match and Roth option

3 weeks PTO to start

13 paid holidays

15% annual performance bonus

Weekly pay

Career growth opportunities

Job summary

Johnson Service Group (JSG) has an immediate opportunity for an experienced Human Resources Manager in Garden Grove, CA. This hands-on role partners with production leadership to support workforce development and ensure CA employment law compliance.

The position is direct hire, onsite, with a compensation range of $130,000–$150,000 DOE. 5–7 years of HR experience in manufacturing is preferred and bilingual ability is a plus.

Qualifications

• 5–7 years of progressive HR experience in manufacturing.
• Strong hands-on employee relations incl. investigations.
• Deep knowledge of California wage/hour laws and leave admin.
• AS9100/ISO manufacturing environment experience preferred.
• PHR, SPHR, SHRM-CP, or SHRM-SCP preferred.

Responsibilities

• Serve as primary HR partner for manufacturing employees and leadership on the production floor.
• Oversee daily HR operations: recruiting, onboarding, training, benefits, compensation.
• Manage employee relations, investigations, conflict resolution, and performance management.
• Ensure California wage/hour compliance and payroll accuracy.
• Support workforce development, succession planning, and retention.

Skills

Employee relations

Workplace investigations

California law

HRIS proficiency

Performance management

Leave administration

Spanish/Vietnamese

HR compliance

Education

Bachelor's degree

Tools

BambooHR

Paycom

ADP

Google Workspace

Job description

Johnson Service Group (JSG) has an immediate opportunity for a hands-on Human Resources Manager with a leading Aerospace & Defense manufacturing company in Garden Grove, CA.

Direct Hire | $130,000K - $150,000K DOE | Onsite

We are seeking an experienced HR professional who enjoys being actively engaged with employees and leadership on the production floor. This role will oversee daily HR operations, manage employee relations, ensure California employment law compliance, and partner with manufacturing leadership to support workforce development and operational goals.

Key Responsibilities

• Serve as the primary HR partner for manufacturing employees and leadership, maintaining a visible presence on the production floor.
• Manage employee relations, workplace investigations, conflict resolution, and performance management.
• Oversee daily HR functions, including recruiting, onboarding, training, benefits, compensation, leaves of absence, and offboarding.
• Partner with leadership on workforce planning, employee development, succession planning, and retention strategies.
• Ensure compliance with California wage and hour laws, including timekeeping, attendance, and payroll accuracy.
• Manage leave of absence and accommodation requests in compliance with FMLA, CFRA, and applicable employment laws.
• Support annual performance reviews, compensation benchmarking, and employee recognition initiatives.
• Collaborate with Safety/EHS on workers' compensation claims and workplace safety initiatives.
• Oversee HRIS data accuracy, compliance documentation, and audit readiness.
• Support employee training and competency programs in accordance with AS9100/QMS requirements.
• Coach and develop assigned HR personnel.

Qualifications

• Bachelor's degree in Human Resources, Business Administration, or related field.
• 5–7 years of progressive HR experience, preferably supporting a manufacturing or production environment.
• Strong hands-on employee relations experience, including workplace investigations and conflict resolution.
• In-depth knowledge of California employment laws, wage and hour regulations, and leave administration.
• Bilingual in Spanish or Vietnamese a plus
• Experience supporting employee development, performance management, and HR operations.
• Proficiency with HRIS platforms such as BambooHR, Paycom, or ADP and Google Workspace.
• Experience with AS9100 or ISO-certified manufacturing environments highly preferred.
• PHR, SPHR, SHRM-CP, or SHRM-SCP certification preferred.

• Client offers comprehensive medical, dental, and vision coverage; 401(k) with match and Roth option; 3 weeks of PTO to start; 13 paid holidays; 15% annual performance bonus; weekly pay; and opportunities for annual salary increases and career growth.
• Johnson Service Group (JSG) is an Equal Opportunity Employer. JSG provides equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, marital status, protected veteran status, or any other characteristic protected by law.