Human Resources Generalist

Castelion Corporation•Torrance, CA

About The Position

The Human Resources Generalist supports core people operations, including onboarding, payroll, benefits administration, people analytics, and general HR operations. The role partners with HR and cross-functional teams to maintain accurate, compliant, and employee-centric processes and contribute to operational improvements for a rapidly growing workforce. Responsibilities include supporting payroll processing and employee inquiries; administering benefits and coordinating with vendors; maintaining HRIS records and generating reports; coordinating new-hire onboarding and offboarding; responding to routine employee questions; supporting compliance activities, audits, and recordkeeping; and identifying ways to streamline HR processes and improve the employee experience. The position may require access to classified information or restricted U.S. Government sites, systems, or information. If designated, employment may depend on obtaining and maintaining required government clearance or authorization and satisfying applicable citizenship or other eligibility requirements. The position also requires access to export-controlled information, and hiring is contingent on being able to access applicable information without additional export licensing. Castelion is an Equal Opportunity Employer and provides reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. Duties and responsibilities may change at any time.

Requirements

Bachelor’s degree in Human Resources, Business, or a related field.
At least 2 years of HR experience, with strong ownership of onboarding.
Experience working in a startup or high-growth environment.
Proficiency with HRIS platforms such as Rippling, ADP, Workday, or similar.
Analytical skills.
High attention to detail and ability to manage sensitive information.
Solid understanding of employment laws and compliance requirements.
Ability to access applicable export-controlled information without requiring additional export licensing.
If the position is designated as requiring it, ability to obtain and maintain required U.S. Government security clearance or authorization and satisfy applicable citizenship or other eligibility requirements.

Nice To Haves

Experience in aerospace, defense, manufacturing, or another regulated industry.
Familiarity with government compliance environments, such as audits and reporting standards.
Experience building or scaling HR processes.
HR certification such as PHR, SHRM-CP, or equivalent.
Experience with dashboards or BI tools.

Responsibilities

Support accurate and timely payroll processing and maintain complete, up-to-date employee pay information.
Resolve routine payroll discrepancies and employee inquiries in a timely manner.
Follow payroll procedures supporting compliance with multi-state wage and hour laws and applicable tax regulations.
Administer employee benefits programs, including health insurance, retirement plans, and leave management.
Respond to benefits questions and coordinate with vendors to resolve enrollment, eligibility, and coverage issues.
Support open enrollment communications, tracking, and documentation; maintain benefits records and process enrollments, changes, and qualifying life events.
Assist with benefits reporting and identify recurring employee questions or administrative challenges.
Maintain accurate employee records and HRIS data integrity; process new hires, terminations, transfers, and compensation updates.
Generate routine HR reports and assist with workforce-planning and operational data collection.
Support compliance reporting, audits, and recordkeeping, and identify and correct data discrepancies.
Coordinate new-hire onboarding activities for Day 1 readiness, including offer letters, documentation, checklists, and compliance requirements.
Partner with internal teams to facilitate onboarding, track completion, follow up on outstanding tasks, and respond to new-hire questions.
Gather onboarding feedback and identify opportunities to improve the new-hire experience.
Support employee onboarding and offboarding, including required tasks and documentation; coordinate offboarding documentation, system updates, and internal notifications.
Serve as a point of contact for routine employee inquiries about HR policies, procedures, and programs.
Maintain organized and compliant employee records; assist with HR compliance activities, programs, and initiatives.
Identify opportunities to streamline routine HR processes and improve the employee experience.