Human Resources Manager

TriMas CorporationHacienda Heights, CA
$120,000 - $160,000Onsite

About The Position

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, Allfast’s products support the commercial, military, and general aviation platforms in production and in service. 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 growth—strengthening capabilities and expanding our global platform as markets evolve. To learn more about PennAero's capabilities and commitment to aerospace excellence, visit https://pennaero.com The Human Resources Manager maintains and enhances the organization’s human capital by planning, implementing, and evaluating HR programs, policies, and practices. This role is highly visible and expected to maintain a consistent presence on the production floor, serving as a trusted partner to both employees and leaders. The HR Manager provides guidance and counsel to employees and leaders on company policies, procedures, and benefits while ensuring a positive employee experience and full compliance with all applicable regulations.

Requirements

  • Bachelor’s degree in Human Resources, Business Administration, or related field
  • Minimum 5 years of progressive HR experience, including employee relations, performance management, and talent acquisition
  • Strong understanding of federal, state, and local employment laws (FMLA, ADA, FLSA, EEO, workers’ compensation, etc.)
  • Demonstrated experience conducting investigations, resolving employee concerns, and mitigating organizational risk.
  • Demonstrates a genuine commitment to serving employees at all levels with responsiveness, respect, and a solutions-focused mindset.
  • Proven ability to coach leaders, drive accountability, and influence decision-making at all levels.
  • Experience leading full-cycle recruiting, onboarding, and workforce planning.
  • Ability to analyze HR metrics, identify trends, and use HRIS systems to maintain accurate data.
  • 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.
  • Strong critical-thinking skills with the ability to handle sensitive issues with discretion and sound judgment.
  • Ability to manage multiple priorities in a fast-paced environment while maintaining accuracy and attention to detail.

Nice To Haves

  • HR certification (PHR, SPHR, SHRM-CP, SHRM-SCP)
  • Manufacturing or aerospace experience strongly preferred

Responsibilities

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

Benefits

  • 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
  • Other Voluntary Benefits
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