Human Resources Manager

  • TriMas
  • City of Industry, California
  • Full Time

Human Resources Manager

Company: Allfast Fastening Systems LLC

Primary Location: 15200 Don Julian Road, City of Industry, CA 91745 USA

Workplace Type: On-site

Employment Type: Salaried | Full-Time

Function: Human Resources

Equal Opportunity Employer Minorities/Women/Veterans/Disabled

Main Duties & Responsibilities

Summary: PennAero is hiring a Human Resources Manager at our Allfast Fastening Systems location in City of Industry, CA. Allfast Fastening Systems is a leading global manufacturer of solid and blind rivets, blind bolts, temporary fasteners, and installation tools for the aerospace industry. Our fasteners are crucial for the structural integrity of both commercial airliners and military jets. As a key supplier to major aerospace manufacturers, Allfasts products support the commercial, military, and general aviation platforms in production and in service.
About PennAero: PennAero is a leading manufacturer of highly engineered fasteners and specialized components for critical aerospace, defense, space, and advanced energy applications. We partner with customers to solve their most complex challenges, bringing technical depth and disciplined, agile execution when it matters most. Experience guides our growthstrengthening capabilities and expanding our global platform as markets evolve. To learn more about PennAero's capabilities and commitment to aerospace excellence, visit

Job Summary:
The Human Resources Managermaintains and enhances the organizations human capital by planning,implementing, and evaluating HR programs, policies, and practices. This role ishighly visible and expected to maintain a consistent presence on the productionfloor, serving as a trusted partner to both employees and leaders. The HRManager provides guidance and counsel to employees and leaders on companypolicies, procedures, and benefits while ensuring a positive employeeexperience and full compliance with all applicable regulations.

Essential Duties, Responsibilities, and Competencies
Visible Floor Presence Regularly engage with employees on the production floor, building trust and accessibility across all shifts and levels of the organization.
Employee Advocacy Serve as an approachable, visible resource for all employees, fostering an open-door culture and proactively addressing concerns before they escalate.
Employee Relations Leadership Investigate, monitor, and resolve employee issues while minimizing organizational risk and ensuring fair, consistent outcomes.
Management Partnership Partner closely with the management team to implement initiatives that enhance employee relations, communication, and workplace culture.
Performance Management Support Advise leaders on addressing performance challenges, coaching, documentation, and corrective action.
Engagement & Organizational Development Lead efforts to strengthen employee engagement, organizational design, and capability building aligned with business needs.
Policy & Compliance Management Develop, interpret, and implement policies and procedures in accordance with federal, state, and local regulations. Ensure consistent deployment of standardized HR processes.
Talent Acquisition Leadership Oversee the full talent acquisition lifecycle, including sourcing, attracting, interviewing, hiring, and onboarding employees.
Regulatory & Policy Adherence Ensure compliance with internal policies and all legal standards.
HR Operations Oversight Lead the HR team in managing payroll coordination, employee records, and policy development while ensuring compliance with federal, state, and local laws.
Continuous Improvement Identify, recommend, and implement HR process improvements and new initiatives aligned with business strategy.

This role is required to be on-site 5 days at the City of Industry, CA location.

Qualifications

Education & Credentials Bachelors degree in Human Resources, Business Administration, or related field; HR certification (PHR, SPHR, SHRM-CP, SHRM-SCP) preferred.
Experience Minimum 5 years of progressive HR experience, including employee relations, performance management, and talent acquisition; manufacturing or aerospace experience strongly preferred.
Employment Law Knowledge Strong understanding of federal, state, and local employment laws (FMLA, ADA, FLSA, EEO, workers compensation, etc.).
Employee Relations Expertise Demonstrated experience conducting investigations, resolving employee concerns, and mitigating organizational risk.
Approachability & Customer Service Orientation Demonstrates a genuine commitment to serving employees at all levels with responsiveness, respect, and a solutions-focused mindset.
Leadership & Influence Proven ability to coach leaders, drive accountability, and influence decision-making at all levels.
Talent Acquisition Skills Experience leading full-cycle recruiting, onboarding, and workforce planning.
Analytical & HRIS Skills Ability to analyze HR metrics, identify trends, and use HRIS systems to maintain accurate data.
Communication Skills Excellent written and verbal communication skills with the ability to build trust and credibility across all levels of the organization, including frontline and hourly employees.
Problem-Solving & Judgment Strong critical-thinking skills with the ability to handle sensitive issues with discretion and sound judgment.
Organizational Skills Ability to manage multiple priorities in a fast-paced environment while maintaining accuracy and attention to detail.

Compensation

In compliance with all states and cities requiring transparency of pay, the expected pay range for this position is $120,000 - $160,000.

Compensation can vary depending on several factors, including a candidate's qualifications, skills, experience, competencies, and geographic location. Some roles may qualify for extra incentives like equity, commissions, or other variable performance-related bonuses. Further details will be provided by our recruiting team during the interview process.

Benefits

Benefit offerings include Medical Insurance and Prescription Drugs, Dental Insurance, Vision Insurance, Flexible Spending Accounts, Life Insurance, Short-Term Disability, Long-Term Disability Insurance (for eligible employees), Employee Assistance Plan (EAP), Paid Time Off (may include vacation and sick time), Retirement Program, and Other Voluntary Benefits.

Job ID: 523536686
Originally Posted on: 6/3/2026

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