SR. HR Business Partner III 401k, Payroll

Hyundai Mobis • Fountain Valley, CA

18d

About The Position

Hyundai MOBIS Parts America is seeking a Senior HR Business Partner to oversee 401(k) administration, expatriate payroll, and wellness programs. The role combines strategic program oversight with operational responsibilities, ensuring accurate and efficient administration of payroll and the 401(k) retirement plan while meeting company policies and applicable regulatory requirements. The Senior HRBP works with company leadership, HR teams, global payroll teams, vendors, and employees to improve benefits offerings and payroll efficiency.

The position administers the company’s 401(k) plan, including enrollments, contributions, distributions, compliance testing, required filings, and fiduciary committee activities. It also manages monthly expatriate payroll across regions and serves as backup for corporate payroll, including bi-weekly payroll. The role manages day-to-day HRIS and Time/Attendance system operations, maintains employee and payroll records, prepares reconciliations and reports, supports wellness and general benefits administration, and responds to employee and management requests.

The work schedule is Monday through Friday, 8:00 a.m. to 5:00 p.m., with a flexible schedule subject to manager discretion and approval. Travel is not required. The position is exempt and salaried, with an expected hiring range of $62,518.54 to $92,214.85, depending on experience and qualifications.

Requirements

• Four to seven years of payroll experience.
• Bachelor’s degree in any field.
• Computer skills, including email, record keeping, routine PowerPoint, word processing, and spreadsheets.
• Reasoning ability to define problems, collect data, establish facts, and draw valid conclusions.

Responsibilities

• Administer the company’s 401(k) plan, including enrollments, terminations, changes, beneficiaries, calculations, compliance testing, employee contributions, and distributions.
• Coordinate 401(k) plan operations with external vendors and internal teams, and recommend improvements to participation and engagement.
• Manage expatriate payroll processing, ensuring accurate and timely monthly salary processing and compliance with global tax laws and company policies.
• Serve as backup for corporate payroll, including bi-weekly payroll, and calculate regular and complex payrolls, deductions, withholdings, incentive pay, and other earnings.
• Review timesheet data, make payroll file changes, process corrections, and ensure payroll discrepancies are investigated, corrected, and documented.
• Maintain employee, payroll, HRIS, and Time/Attendance records for current employees, new hires, and terminations; create and update system reports.
• Prepare payroll and benefits reconciliations and reports, including 401(k), accumulators, vacation accruals, and month-end reports for Finance and HR.
• Ensure accurate data interfaces among HRIS, payroll, time and attendance, and reporting systems; conduct regular payroll and system-sync audits.
• Respond to employee inquiries about payroll and provide expatriate employees guidance on payroll issues and tax implications.
• Assist with wellness programs and activities, general benefits administration, and recommendations for program changes that reflect employee needs.
• Audit 401(k) and related program performance, usage, coverage, effectiveness, costs, and plan experience; prepare data for actuarial assessments and review cost projections.
• Review competitive and industry trends, complete surveys, forecast trends, recommend program changes and cost-containment strategies, and prepare and monitor budget recommendations.
• Manage Form 5500 reporting and other required filings, oversee annual discretionary 401(k) funding, and support fiduciary compliance as a 401(k) Fiduciary Committee participant.
• Coordinate fiduciary committee meetings with the Plan Advisor and oversee committee activities, including timely publication of minutes.
• Develop communication tools and deliver presentations about the 401(k) plan to management, employees, and field staff; prepare materials such as orientation packets and summary plan descriptions.
• Prepare ad-hoc reports and special projects, support HR and Finance audit documentation requests, and handle overtime and labor-cost reports, employment verifications, and vendor maintenance.
• Research enhancements to the HRIS and 401(k) recordkeeper systems to support department needs and optimal system use.
• Keep management informed about payroll issues and perform additional duties as assigned.

Benefits

• Medical, dental, and vision coverage.
• 401(k) with employer matching.
• Tuition reimbursement.
• Paid vacation, paid sick days, and paid holidays.
• Mapped career plans and opportunities to develop and promote talent.
• Company discounts and additional benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior