Administrative Assistant in Fullerton, California at ONESOURCE SUPPLY SOLUTIONS LLC

Position Title:

Administrative Assistant

About the role:

The Administrative Assistant plays a central role in supporting daily warehouse operations while serving as the front-facing representative for the office. This position blends administrative coordination, warehouse support, and front desk responsibilities, ensuring smooth operations, strong communication, and a professional experience for visitors and staff.

Compensation: $22 - $28 per hour

Location: Training to begin in Fullerton CA, role will move to Santa Fe Springs in Fall of 2026.

What You Will Do:

Front Office & Reception

• Serve as the main receptionist and first point of contact for visitors, vendors, and employees
• Answer and route incoming calls on the main phone line
• Greet and assist visitors in a professional and welcoming manner
• Receive, sort, and distribute incoming mail and packages
• Coordinate food orders and support meeting setup as needed
• Manage and maintain the company calendar, including scheduling meetings and operational activities

Warehouse & Administrative Support

• Ensure smooth implementation of warehouse and administrative processes
• Act as a liaison between warehouse staff and internal departments
• Respond to emails and inquiries from suppliers and internal teams
• Work with receiving and operations teams to resolve receiving discrepancies
• Schedule inbound deliveries and maintain the receiving calendar
• Prepare, scan, and file receiving documentation (packing lists, invoices, etc.)
• Organize and maintain physical and electronic records related to warehouse and production activity
• Maintain inventory of marketing materials and company swag, including tracking levels and coordinating reorders
• Perform general administrative tasks (filing, photocopying, office supply management)
• Support warehouse team with day-to-day activities as needed
• Identify opportunities to improve processes and increase efficiency

What You Will Bring

• Strong time management and organizational skills
• Ability to multitask and prioritize in a fast-paced environment
• High attention to detail and accuracy
• Strong problem-solving skills and proactive mindset
• Friendly, professional, and customer-service-oriented demeanor
• Clear written and verbal communication skills (bilingual English/Spanish preferred)
• Proficiency in Microsoft Office (Excel and Outlook)
• Experience with Eclipse or similar ERP system preferred
• Comfortable working in both office and warehouse environments

Why This Role Matters

You’ll be the hub of the operation, supporting warehouse workflows while creating a positive, organized, and professional front office experience for employees, customers, and partners.

Qualifications:

Education and/or Experience:

• 1–3 years of administrative, receptionist, or warehouse support experience preferred
• Experience in a warehouse, logistics, or distribution environment is a plus
• High school diploma or equivalent required; associate’s degree preferred
• Equivalent combination of education and experience will be considered

Supervisory Responsibilities:

x None

Working Conditions and Environment: (Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions)

• Long and varied hours required occasionally.
• Occasional work in a dusty environment.

Travel:

Yes x No

If yes, the % of travel time required: 0%

Physical Demands (Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions):

• While performing the duties of this job, the employee is regularly required to sit, talk and hear. The employee frequently is required to sit, stand, walk, stoop, kneel, crouch, crawl, climb or balance. The employee will frequently lift and/or move 10 pounds and may be required to occasionally lift and/or move up to 25 pounds. Specific vision abilities required by this job include close vision, and ability to adjust focus.

Key Alignment Topics:

• OUR MISSION – To grow our company by doing things right and treating people right.
• OUR VISION – To be the essential supply chain partner serving all utilities in California and Hawaii.
• OUR VALUES – People, Safety, Integrity, Pride, Fun.