Human Resources Generalist

Human Resources Generalist Rigaku Americas Corp. life insurance, 401(k) 9009 Trails Drive (Show on map) May 19, 2026 Join Rigaku in shaping a better world through new perspectives!

POSITION SUMMARY

The Human Resources Generalist (Payroll Lead) owns the payroll operations for Rigaku Americas Holding for a multi-state and international workforce. This role is responsible for end-to-end payroll delivery for approximately 400 U.S. employees across 25+ states, while also coordinating payroll operations for a handful of employees in Brazil, Canada, Colombia, and Mexico. This is a high-impact role operating in our Workday environment. This position serves as the functional payroll system lead, partnering directly with external consultants to manage configuration, reporting, testing, and enhancements. Beyond payroll processing, the role oversees payroll tax compliance, workers' compensation, unemployment, immigration case coordination, and broader HR operations support. This position is ideal for someone who thrives in ownership, enjoys optimizing processes post-implementation, and wants meaningful influence over payroll and HR infrastructure.

ESSENTIAL FUNCTIONS

Reasonable Accommodations Statement To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. Reasonable Accommodations may be made to enable qualified individuals with disabilities to perform the essential functions.

Essential Functions:

Lead end-to-end bi-weekly payroll processing across multiple U.S. states, including audits, off-cycle runs, and state-specific final pay compliance Coordinate international payroll operations with local processors/employer of record to ensure accurate, timely, and compliant processing Oversee year-end payroll activities, including W-2 reconciliation and reporting Ensure compliance with federal, state, and local laws (FLSA, overtime, leave laws, pay frequency, final pay requirements) Manage payroll tax registrations, filings, deposits, reconciliations, and agency correspondence (941/940, state/local withholding, SUI/SUTA) Research regulatory updates and resolve complex payroll matters independently, escalating with risk assessment and recommended solutions Serve as internal functional lead for Workday Payroll, partnering with external consultants on configuration, testing, releases, reporting, integrations, and system enhancements Develop payroll reporting, audit checks, and internal controls to ensure data integrity across onboarding, timekeeping, benefits deductions, and payroll inputs Coordinate with Finance on payroll funding, general ledger mapping, and account reconciliations Administer wage garnishments, unemployment claims, and workers' compensation wage reporting and audit support Serve as primary liaison with immigration counsel, managing visa case coordination and maintaining I-9 and E-Verify compliance Provide general HR operations support, including onboarding documentation (I-9, tax forms, direct deposit), employee file maintenance, policy rollouts, and employee/manager support Support benefits administration by validating payroll deductions, assisting with open enrollment and life event changes, coordinating vendor funding, and resolving payroll-impacting benefit issues Partner cross-functionally with various internal groups and external vendors to improve processes, strengthen controls, and maintain audit readiness Develop and maintain scalable SOPs, documentation, and compliance calendars

POSITION QUALIFICATIONS

Competencies:

Self-Start, Lead Change:

Act proactively, takes initiative to solve problems, and drives improvements that benefit employees and the organization Win with a

Diverse Team:

Builds strong, inclusive relationships internally and externally, domestically and internationally, collaborates effectively across teams, and fosters a positive environment for all employees Build the

Future:

Looks ahead, embraces new ways of working, and implements solutions that support long-term growth and employee success

Rigaku-Way Value Creation:

Makes thoughtful, principled decisions, adapts to change, seeks feedback, and continuously learns to deliver value to employees and the organization

SKILLS & ABILITIES

Education:

Bachelor's degree in Human Resources, Psychology, Business, Accounting, or a related field or equivalent combination of education and experience required

Experience:

3+ years of hands-on payroll experience supporting 200+ employees in complex multi-state environments (15+ states preferred), with strong knowledge in payroll compliance 1+ years of experience coordinating international payroll operations 2+ years of experience in general HR operations

Computer Skills:

Experience processing payroll within an HR system, preferably Workday Strong Excel skills Ability to use Microsoft Office suite

Certificates & Licenses:

SHRM-CP or PHR preferred

Other Requirements:

High level of integrity, confidentiality, and customer service orientation Strong organizational, analytical, and problem-solving skills Committed to accuracy and quality, with a strong focus on process reliability and error prevention Ability to operate independently, research issues, and escalate with recommended solutions Effective collaboration and communication skills across diverse teams and geographies

PHYSICAL DEMANDS N

(Not Applicable) Activity is not applicable to this occupation. O (Occasionally) Occupation requires this activity up to 33% of the time (0

• 2.5+ hrs/day) F (Frequently) Occupation requires this activity from 33%
• 66% of the time (2.5
• 5.

5+ hrs/day) C (Constantly) Occupation requires this activity more than 66% of the time (5.5+ hrs/day) Physical Demands StandO WalkO SitC Handling / FingeringC Reach OutwardF Reach Above ShoulderO ClimbN CrawlN Squat or KneelO BendO Lift/Carry 10 lbs or lessO 11-20 lbsO 21-50 lbs

O 51-100

lbsN Over 100 lbsN Push/Pull 12 lbs or lessO 13-25 lbsO 26-40 lbs

N 41-100

lbs

N Other Physical Requirements:

High frequency of computer keyboarding and of viewing a computer monitor.

WORK ENVIRONMENT

This role is performed in a typical office setting with controlled temperatures, artificial lighting, and minimal exposure to noise or environmental hazards. Work primarily involves sitting at a desk, using a computer, and operating standard office equipment such as phones, printers, and copiers. The environment is generally quiet, though occasional disruptions may occur in collaborative or open-office spaces. Rigaku offers a rewarding work environment and excellent benefits. All applicants are kept in strict confidence. Benefits package includes Health, Dental, Vision, STD, LTD, Life insurance, section 125 flexible spending accounts, 401(k) plan and more. Rigaku is an EEO/AA employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Applicants must be able to prove they can legally work in the US.