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Endemic Environmental Services, Inc

Human Resources Generalist

Endemic Environmental Services, Inc, Fullerton, California, United States, 92632

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Founded in 2009, Endemic Environmental Services, Inc. is a growing environmental consulting firm supporting infrastructure projects across California. We are seeking a

PART‑TIME HR Generalist

to work onsite in our Fullerton office and support our HR Manager in delivering seamless HR operations.

This role begins part‑time (20–25 hours/week) with the opportunity to grow into a full‑time position as the company continues to expand and as the person in this role demonstrates reliability, grows their capabilities, and becomes an essential part of our workflow.

We are looking for a reliable, detail‑oriented HR professional who is tech‑savvy, comfortable with AI tools, and excited about improving processes, strengthening compliance, and partnering closely with HR leadership. If you’re the type to say “what if we tried it this way?” you’ll be right at home.

Key Responsibilities Onboarding & Offboarding

Lead onboarding lifecycle from offer letter through day‑one readiness

Manage I-9s, Paychex Flex workflows, system access, and compliance documentation

Conduct onboarding orientations and ensure a consistent, high‑quality new‑hire experience

Manage offboarding tasks including final paperwork, system deactivation, exit documentation, and compliance tracking

HR Operations, Compliance & Safety Training

Own all onboarding and annual safety training tracking, scheduling, and documentation

Maintain employee files that meet multi‑state HR compliance standards

Support leave administration (FMLA, CFRA, PDL, ADA) with professionalism and accuracy

Assist with safety documentation, certifications, and regulatory updates

Payroll & Benefits Support

Conduct weekly timesheet audits

Learn Paychex Flex payroll processing and transition into handling payroll independently on an as‑needed basis

Support benefits updates, employee questions, and Open Enrollment activities

Recruiting & Employee Support

Post positions, screen applicants, coordinate interviews, and support hiring teams

Respond to employee questions with professionalism and good judgment

Support employee relations documentation and follow‑up

HR Partnership & Policy Development This is where the magic is.

Work closely with the HR Manager to brainstorm ideas, evaluate options, and implement new or improved policies

Contribute to SOP development, handbook updates, templates, training decks, and manager toolkits

Help strengthen HR systems, processes, and internal communication

Bring a tech‑forward lens to modernizing HR operations, including AI‑enabled documentation and workflow improvements

Qualifications

2–4+ years of HR Generalist or HR Coordinator experience (California experience strongly preferred)

High competency with HRIS systems (Paychex/ADP), spreadsheets, and digital admin tools

Tech‑savvy, with working knowledge of AI tools for content drafting, automation, and process improvements

Strong understanding of HR compliance fundamentals, CA wage‑and‑hour laws, onboarding requirements, and safety documentation

Excellent communication skills, judgment, and follow‑through

Enjoys partnership, idea‑sharing, and building better systems together

Comfortable working onsite in a small‑office, high‑collaboration environment

Schedule & Compensation

Part‑time:

20–25 hours per week

Location:

Onsite in Fullerton, CA

Compensation:

$30 - $35 per hour

401(k) Plan Participation with Matching 4%

10 Observed Holidays

EAP (Employee Assistance Program) Participation

Why This Role Matters You won’t be lost in a 12‑person HR department. You’ll be working side‑by‑side with HR leadership, shaping the employee experience, improving processes, and helping build a stronger operational foundation. This is an opportunity to contribute strategically while still owning meaningful day‑to‑day HR work.

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