Office Administrator

High Country Plastics LLC; Caldwell (ID); On-site; USD 42,000 - 56,000; Full time

Benefits offered by this job

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

HSA Employer Contribution

401k match

Job summary

High Country Plastics LLC in Caldwell, Idaho is seeking an Office Administrator to support operations, HR, AR/AP, and accounting tasks while maintaining an organized office environment.

The role requires 2+ years in office management or finance-related roles, proficiency with QuickBooks/NetSuite and MS Office, and strong communication and discretion. On-site position with benefits and a collaborative culture.

Qualifications

• 2+ years of experience in office management, administration, or finance-related roles (manufacturing experience preferred).
• Strong understanding of AR, AP.
• Basic HR Knowledge preferred.
• Proficiency with accounting systems (e.g., QuickBooks, NetSuite) and MS Office Suite.
• Proficiency in Microsoft 365 (Outlook, Word, Excel, PowerPoint, Teams).
• Excellent communication, organization, and problem-solving skills.

Responsibilities

• Serve as the first point of contact for visitors, vendors, and incoming communications.
• Maintain accurate filing systems (electronic and physical).
• Manage mail, shipping, and package delivery processes.
• Support coordination of company events, meetings, and training sessions.
• Maintain a clean, organized, and welcoming office environment.
• Assist with onboarding activities, including preparation of new-hire materials and workspace setup.
• Help maintain employee records and HR documentation.
• Assist with time sheet collection and payroll preparation.
• Coordinate employee communications and company-wide announcements.
• Support HR initiatives and special projects, as requested.
• Oversee customer billing and invoicing accuracy.
• Proactively monitor outstanding receivables and ensure timely collections.
• Partner with Customer Service to resolve customer billing inquiries and escalates issues as needed.
• Oversee vendor invoice processing, expense tracking, and payment scheduling.
• Maintain vendor files and manage vendor communication.
• Ensure all payables follow proper approval workflows and are processed on time.
• Backup the Customer Service team ensuring timely, accurate responses to customer inquiries.
• As needed, handle escalated customer issues and collaborate with customer service and operations to resolve concerns.
• Liaise between departments to support smooth information flow.
• Draft and distribute internal communications, memos, and notices.

Skills

Office management

AR and AP understanding

HR basics

Accounting software

MS Office / Microsoft 365

Communication & organization

Tools

QuickBooks

NetSuite

MS Office Suite

Microsoft 365

Job description

Office Administrator

High Country Plastics LLC CALDWELL, Idaho, United States

About this position

Office Administrator

DEPARTMENT: Operations

REPORTING TO: Plant Manager

MAKS Plastics LLC is a Rotational molding and Thermoforming plastic component supplier for the RV, Marine and Custom industries. Our products are diverse to offer our employees stability and growth. At MAKS, we thrive on a People First, Customer focused Culture that works hard, plays hard and is Family Focused.

SUMMARY: The Office Administrator plays a key role in ensuring the smooth day-to-day operations of the office. This position provides administrative support to leadership and staff, manages office functions, coordinates communications, and supports HR and accounting tasks as needed. The ideal candidate is organized, detail-oriented, and able to handle multiple priorities with professionalism and discretion.

KEY RESPONSIBILITIES:

Administrative Support

• Serve as the first point of contact for visitors, vendors, and incoming communications.
• Maintain accurate filing systems (electronic and physical).

Office Operations

• Manage mail, shipping, and package delivery processes.
• Support coordination of company events, meetings, and training sessions.
• Maintain a clean, organized, and welcoming office environment.

Human Resources Support

• Assist with onboarding activities, including preparation of new-hire materials and workspace setup.
• Help maintain employee records and HR documentation.
• Assist with time sheet collection and payroll preparation.
• Coordinate employee communications and company-wide announcements.
• Support HR initiatives and special projects, as requested.

Accounts Receivable (AR)

• Oversee customer billing and invoicing accuracy.
• Proactively monitor outstanding receivables and ensure timely collections.
• Partner with Customer Service to resolve customer billing inquiries and escalates issues as needed.

Accounts Payable (AP)

• Oversee vendor invoice processing, expense tracking, and payment scheduling.
• Maintain vendor files and manage vendor communication.
• Ensure all payables follow proper approval workflows and are processed on time.

Customer Service

• Backup the Customer Service team ensuring timely, accurate responses to customer inquiries.
• As needed, handle escalated customer issues and collaborate with customer service and operations to resolve concerns.

Communication & Coordination

• Liaise between departments to support smooth information flow.
• Draft and distribute internal communications, memos, and notices.

QUALIFICATIONS:

• 2+ years of experience in office management, administration, or finance-related roles (manufacturing experience preferred).
• Strong understanding of AR, AP.
• Basic HR Knowledge preferred.
• Proficiency with accounting systems (e.g., QuickBooks, NetSuite) and MS Office Suite.
• Proficiency in Microsoft 365 (Outlook, Word, Excel, PowerPoint, Teams).
• Excellent communication, organization, and problem-solving skills.
• Ability to manage multiple priorities and deadlines in a dynamic environment.
• Strong written and verbal communication abilities.
• Ability to handle confidential information with discretion.

PHYSICAL REQUIREMENTS:

• Ability to work in an office and manufacturing environment, which may include exposure to noise, dust, and varying temperatures.
• Ability to Sit, stand and walk for long periods.

COMPANY CULTURE:

At MAKS Plastics, we believe that our people are our greatest asset. We foster a collaborative and inclusive work environment where every team member is valued and encouraged to contribute their unique skills and perspectives. Our culture is built on the principles of innovation, continuous improvement, and mutual respect. We support professional growth and development through ongoing training and career advancement opportunities.

BENEFITS:

• Competitive salary and benefits package
• Opportunities for professional growth and development
• Collaborative and innovative work environment
• Health, Dental, Vision, and Life Insurance
• Employer Contribution to Health Savings Account
• Matching Retirement Savings Plan