Senior Human Resources Generalist

Masimo•Irvine, CA

6d•Onsite

About The Position

The Senior Human Resources Generalist supports HR Business Partners in delivering a full range of HR services within Masimo’s dynamic environment. This position plays a critical role in executing and enhancing core HR processes across the employee lifecycle, including employee relations, organizational changes, performance management, engagement initiatives, training, and compliance with employment laws. Acting as a trusted resource to employees and managers, the Senior HR Generalist independently manages employee relations matters and provides guidance on day-to-day HR issues, while partnering closely with HR Business Partners on more complex or strategic initiatives. This role operates with a high level of autonomy within defined scope and serves as a key extension of HR Business Partners in managing day-to-day people matters. This is an onsite position at the Irvine, CA office.

Requirements

5–8+ years of progressive Human Resources experience
Strong employee relations experience, including independently managing investigations and workplace issues
Demonstrated ability to coach and influence managers
Solid knowledge of California employment law and HR best practices
Ability to operate with a high level of autonomy while effectively partnering with HR Business Partners
Strong organizational skills with the ability to manage multiple priorities
Strong HRIS proficiency (e.g., Workday, Oracle), including transactions, reporting, data audits, and workforce analytics support.
Proficiency in Microsoft Office Suite (Excel, Word, Outlook, PowerPoint)
Excellent interpersonal and communication skills
Ability to read, write, and communicate effectively in English.
Ability to draft clear business correspondence, policies, and employer communications.
Ability to facilitate professional conversations with employees, managers, and cross-functional partners.

Nice To Haves

Experience in medical device, healthcare, or a regulated industry
Experience leading HR projects or process improvement initiatives
HR certification (PHR/SPHR or SHRM-CP/SCP)

Responsibilities

Support HR Business Partners in delivering HR services across assigned client groups
Serve as a primary point of contact for employees and managers, providing guidance on HR policies, procedures, and day-to-day HR matters
Independently manage employee relations matters, including investigations, performance concerns, corrective actions, and involuntary separations; assess risk, recommend appropriate action, and escalate higher-risk situations as appropriate
Coach and influence managers on employee matters, including performance management, feedback, documentation, and policy application
Execute onboarding and offboarding processes, ensuring a compliant, efficient, and positive employee experience
Manage employee lifecycle changes (e.g., promotions, transfers, organizational updates, compensation changes) with a high level of accuracy and judgment
Ensure compliance with federal, state (California), and local employment laws and company policies; independently manage workplace accommodations and the interactive process; proactively identify and escalate potential risks
Partner cross-functionally with Payroll, Talent Acquisition, Legal, and other teams to ensure aligned and efficient HR operations
Support and drive execution of HR programs, including performance management, engagement initiatives, and training efforts
Track and analyze trends in employee relations, turnover, and other HR metrics; provide actionable insights and recommendations to HRBPs
Identify and lead process improvements to enhance efficiency, scalability, and employee experience
Support HR audits, documentation, and maintenance of employee records to ensure compliance
Manage unemployment (EDD) claims and workers’ compensation cases, including follow-up and resolution
Develop and distribute HR communications, tools, and resources for employees and managers
Lead or contribute to HR projects and initiatives, driving execution and outcomes
Exercise sound judgment in interpreting policies and making recommendations with minimal oversight