Senior HR Manager

Winchester Interconnect•Garden Grove, CA

2d•$110,000 - $130,000•Onsite

About The Position

At Winchester Interconnect, we always do the right thing, the right way. Winchester Interconnect is committed to inspiring the most innovative teams. We foster a dynamic and inclusive environment that thrives on collaboration and continuous growth. We hire exceptional people, celebrate achievements, drive employee growth, and provide opportunities to thrive. Winchester is where potential becomes purpose, and every team member plays a vital role in building our shared success. As our Senior HR Manager, you will be a key leader and strategic partner at our Garden Grove manufacturing site. You will be responsible for directing all aspects of human resources, including employee relations, talent acquisition, performance management, compensation and benefits, and legal compliance. Your primary mission is to cultivate a positive and productive workplace culture while aligning HR strategies with our operational goals to drive business success. Given our location, an extensive and up-to-date mastery of California labor laws and manufacturing compliance is absolutely essential for success in this role.

Requirements

Bachelor's degree in Human Resources, Business Administration, or a related field.
6 to 9 years of progressive HR experience, with at least 5 years in a management role within a manufacturing environment.
In-depth knowledge of California and US Federal employment laws and regulations.
Proven experience in managing complex employee relations issues.
Strong analytical, problem-solving, and leadership skills.
Proficiency in Microsoft Office (Excel, Word, PowerPoint) and HRIS systems (e.g., ADP, Workday).

Nice To Haves

SHRM-CP/SHRM-SCP or PHR/SPHR certification is highly desirable.

Responsibilities

Design, evaluate, and streamline internal HR workflows to maximize operational efficiency, reduce administrative bottlenecks, and ensure the department runs smoothly.
Foster a culture of continuous improvement within the HR team by regularly auditing existing procedures (e.g., onboarding, offboarding, data management) and implementing best practices.
Leverage HR technology and systems to automate manual processes, improving data accuracy and response times for plant employees.
Establish and maintain standard operating procedures (SOPs) for the HR department to ensure consistency, scalability, and alignment with corporate goals.
Partner with General Managers, Finance and Department Heads to align HR strategies with production schedules, workforce planning, and business goals.
Manage and mentor your HR team.
Provide data-driven HR insights to executive leadership regarding turnover, absenteeism, overtime, recruitment metrics, and labor costs.
Ensure absolute compliance with all California Labor Codes, including wage and hour laws, strict meal and rest break regulations, and overtime calculations.
Oversee leaves of absence in accordance with the California Family Rights Act (CFRA), FMLA, PDL, and ADA/FEHA interactive processes.
Lead complex employee relations investigations, resolve grievances on the production floor, and foster a transparent, fair workplace culture.
Develop and execute recruitment strategies to attract both exempt technical talent (Engineers, Quality Assurance) and non-exempt skilled labor.
Manage relationships with temporary staffing agencies to scale the production workforce dynamically based on manufacturing demands.
Partner closely with the Safety/EHS team to ensure strict compliance with Cal/OSHA regulations tailored to electronics manufacturing (e.g., chemical handling, ESD safety, ergonomics).
Manage the end-to-end Workers' Compensation process, focusing on early intervention, return-to-work programs, and risk mitigation.
Oversee the annual performance review process and implement upskilling/training initiatives for floor supervisors.
Ensure local compensation practices align with California’s Pay Transparency and Pay Equity laws.