Senior Human Resources Generalist

Senior Human Resources Generalist

About the Role
The Senior Human Resources Generalist serves as a strategic and operational Human Resources partner supporting two subsidiary organizations within a shared-services environment. This role delivers comprehensive HR support across all major HR functions, including employee relations, workplace investigations, manager coaching, talent acquisition, benefits administration, leave management, compliance, employee engagement, HR analytics, and process improvement.

The Senior HR Generalist partners closely with leaders and employees to foster a positive workplace culture, ensure compliance with employment laws and company policies, and support organizational goals. This position balances the unique needs of multiple business units while promoting consistency, operational excellence, and continuous improvement across HR programs, processes, and employee experiences.

The ideal candidate is a trusted advisor with strong employee relations expertise, advanced leave and accommodation administration knowledge, and the ability to influence leaders, manage complex people matters, and drive HR initiatives that support organizational effectiveness.

Responsibilities include:

HR Business Partnership

• Provide HR support for two subsidiary organizations.
• Partner with leaders on workforce planning, employee relations, talent management, and organizational effectiveness.
• Support HR process improvements and harmonization initiatives.
• Serve as a resource for HR policies, compliance, benefits, and employee relations.
• Provide guidance to HR support staff as needed.

Employee Relations

• Lead employee relations investigations and recommend appropriate resolutions.
• Advise managers on performance, attendance, conduct, and workplace issues.
• Facilitate employee meetings and difficult workplace conversations.
• Prepare employee relations documentation and maintain confidentiality.
• Identify trends and recommend actions to improve engagement and reduce risk.

Manager & Leadership Support

• Coach managers on performance management, employee development, and conflict resolution.
• Provide guidance on employment decisions and policy interpretation.
• Support leadership development and team effectiveness.

Talent Acquisition & Onboarding

• Coordinate recruiting activities, candidate communications, and interviews.
• Prepare employment offers and onboarding documentation.
• Facilitate onboarding, orientation, and offboarding processes.
• Analyze recruitment and retention trends to support hiring strategies.

Benefits & Leave Administration

• Administer employee benefits, leave programs, and accommodations.
• Serve as liaison with benefit vendors, brokers, and insurance carriers.
• Lead open enrollment and employee benefits communications.
• Ensure compliance with leave, disability, and employment laws.
• Manage workers' compensation, unemployment, and return-to-work programs.

HR Operations & Analytics

• Maintain HRIS data integrity and employee records.
• Process employee lifecycle transactions and conduct HR audits.
• Prepare and analyze HR metrics and workforce reports.
• Support workforce planning and HR process optimization.

Employee Engagement & Development

• Coordinate employee engagement, recognition, wellness, and training initiatives.
• Support feedback programs and retention strategies.
• Develop training materials, SOPs, and employee resources.
• Promote employee development and succession readiness.

HR Projects & Continuous Improvement

• Lead and support strategic HR initiatives and special projects.
• Improve HR processes, workflows, and documentation.
• Support HR systems enhancements and automation efforts.
• Assist with organizational design, compensation, and workforce planning initiatives.

Required Qualifications

• Bachelor's degree in Human Resources, Business Administration, or a related field preferred.
• Equivalent combinations of education and relevant experience may be considered.

• Minimum 5 years of progressive Human Resources experience with demonstrated responsibility across multiple HR disciplines.
• Strong employee relations and workplace investigation experience.
• Experience coaching managers and advising on complex employee matters.
• Advanced experience administering leave of absence programs and workplace accommodations, including FMLA, ADA, disability, workers' compensation, and other protected leave programs.
• Experience administering employee benefit programs, including vendor coordination, open enrollment support, and benefits issue resolution.
• Experience supporting recruitment, onboarding, employee engagement, compliance, and HR operations.
• Demonstrated experience training, mentoring, or providing work direction to HR team members and/or cross-functional business partners.
• Experience working in a multi-site, shared services, or multi-entity environment preferred.
• Experience utilizing HRIS systems and leveraging HR data to support decision-making.

Preferred Qualifications

• SHRM-CP, SHRM-SCP, PHR, SPHR, or equivalent HR certification preferred.
• Experience supervising or leading HR staff, including coaching, training, workload coordination, and employee development.
• Experience leading HR process improvement initiatives, workflow optimization, process standardization, and SOP development.

Pay Range
The target base salary for this role at commencement of employment is expected to be between $82,000 - $116,000 annually. Final pay determinations will depend on various factors, including, but not limited to geographical location, experience level, knowledge, skills and qualifications.

Benefits
Hamamatsu offers a competitive salary and an excellent benefit package for full-time employees which includes: Medical, Dental, Vision, Prescription, Life Insurance, Vacation/Sick/Personal Time, and Retirement Plans.

Referral Tier:2

This position may require working with, or exposure to goods and information that may be subject to the jurisdiction of the US State Department ITAR regulations ( and the Commerce Departments CCL (

Hamamatsu is an Equal Opportunity Employer. All applicants will receive fair and impartial consideration without regard to race, religion, color, gender, age, national origin, physical or mental disability, genetic information, veteran status, gender identity, sexual orientation, or any other status protected by applicable law.

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It is the policy of Hamamatsu Corporation not to sponsor immigration visas for employment applicants.