Office & Administrative Coordinator — High-Tech Ops

Avantier Inc.; Plainfield (NJ); On-site; USD 50,000 - 65,000; Full time

Benefits offered by this job

401(k)

401(k) matching

Dental insurance

Health insurance

Paid time off

Vision insurance

Job summary

Avantier Inc. is seeking an experienced Office Administrator to support daily office operations at our North Plainfield, NJ location. You will manage communications, invoicing, and inventory coordination in a fast-paced environment to keep daily activities running smoothly.

The ideal candidate is organized, proactive, and capable of multitasking across teams while maintaining high accuracy and efficiency in administrative tasks.

Qualifications

• 2+ years of experience in an office coordination, administrative, or operations support role.
• Experience with invoicing, documentation, inventory management, and phone handling.
• Strong written and verbal communication skills.
• Proficient in Microsoft Office (Excel, Outlook, Word).
• Strong organizational and time management skills.
• Ability to multitask and work independently.
• High attention to detail and accuracy.
• Self-motivated with a proactive mindset.

Responsibilities

• Prepare packing slips, invoices, and related documentation.
• Manage emails, follow-ups, and internal/external communication.
• Prioritize tasks based on urgency and business needs.
• Maintain office procedures, records, and organizational systems.
• Assist with inventory tracking and office supply coordination.
• Handle incoming phone calls and route inquiries appropriately.
• Support managers and cross-functional teams with daily operations.
• Identify and communicate issues proactively.
• Assist with ad-hoc operational, administrative, and office tasks as needed.

Skills

Communication skills

Microsoft Office

Multitasking

Detail oriented

Organizational skills

Time management

Independent worker

Proactive mindset

Tools

Microsoft Office Suite

Job description

Avantier Inc. is seeking an experienced Office Administrator to support daily office operations at our North Plainfield, NJ location. You will manage communications, invoicing, and inventory coordination in a fast-paced environment to keep daily activities running smoothly.

The ideal candidate is organized, proactive, and capable of multitasking across teams while maintaining high accuracy and efficiency in administrative tasks.