Temporary Accounting & Office Assistant
Tri-Mack Plastics • Bristol, RI • Full Time
Posted on Thu, Oct 1, 2026
Located in Bristol, Rhode Island for over 50 years, Tri-Mack is a leading manufacturer of high-temperature thermoplastic components for the aerospace-defense, semiconductor, energy and medical industries.
Our broad capabilities include collaborative engineering, tool making, injection molding, thermoplastic composite processing, multi-axis CNC machining, bonding and assembly, testing and quality control - all within a modern, environmentally controlled 66,000 sq. ft. facility.
Our culture is based on values that promote respect, teamwork and accountability and we are committed to meeting customer requirements through our ISO 9001/AS9100 quality management system.
PLEASE NOTE - Applicants are required to pass a criminal background check. This position involves access to data that is subject to International Traffic in Arms Regulations (ITAR). We are unable to sponsor or take over the sponsorship of any employment visa. Applicants must be authorized to work for any employer in the U.S.
Position: Temporary Accounting & Office Assistant
The Accounting & Office Assistant provides administrative and accounting support for Tri-Mack. This position is responsible for performing a range of accounting and clerical tasks for both Accounts Payable (A/P) and Accounts Receivable (A/R). For A/P, this includes receiving, processing, and verifying invoices, tracking and recording purchase orders, and processing payments. For A/R, this includes reviewing daily receivables, adjusting as required and sending out the invoices that aren’t supported by customer portals. In addition, this position is responsible for greeting visitors, answering phones, filing, sorting mail and other general clerical duties to effectively support the department and company. Finally, the Accounting & Office Assistant assists the Vice President, Accounting and Human Resources with other duties as needed.
Responsibilities & Accountabilities:
- Support accounting, matching A/P invoices with packing lists, entering information directly into Visual, reconciling any issues and filing.
- Review daily invoices to ensure pricing, quantities and the POs are correct for each order.
- File check scans, invoices and monthly A/P in the appropriate paper or digital folders.
- Scan and review the previous day’s Accounts Receivables and make adjustments as necessary. Send out invoices to customers not supported by portals.
- Maintain the OHIO sales tax spreadsheet on a daily basis.
- Prepare the necessary paperwork for the daily cash deposits as requested.
- Manage the front-desk and reception areas, serving as the first point of contact, greeting guests, vendors, job candidates, and others; ensuring guest book sign-in, badging, NDA completion, providing WIFI passcodes, directing to the appropriate destination, etc.
- Perform general administrative tasks, such as answering and directing phone calls, retrieving and conveying messages, handling email, faxes, files, and mailings, directing deliveries and filing
- Set-up conference rooms for visits and meetings, including refreshments, ordering food, checking and refreshing the room.
- Keep the office stocked, and organized, order office and break room supplies, copier services and maintain inventory as needed, monitoring the break room, conference rooms and communal areas
- Maintain a safe work environment and adhere to all ISO/AS9100 requirements
- Show up to work on time and adhere to the schedule agreed upon by you and your manager.
- Get along with your co-workers, and support others as needed.
- Pursue opportunities to develop new skills both within the department and across departmental lines.
- Conduct yourself in an ethical and professional manner, show respect for your fellow workers and all company and personal property, and demonstrate Tri-Mack values - Respect, Teamwork, Integrity, Accountability, and Durability.
- Provide ad hoc support to staff members and departments and all other duties and special projects as assigned by manager.
- High School diploma or equivalent required.
- 1-3 years of relevant experience in an administrative or Accounting role required
- Strong computer skills required, including proficiency in Microsoft Office (Excel and Word), ability to operate office equipment, and aptitude for learning new software and systems
- Knowledge of Visual Manufacturing or similar ERP system is a plus.
- Commitment to providing outstanding customer service, able to communicate effectively via phone, e-mail, and in person.
- Reliable, accountable team player, who learns quickly, works independently and maintains confidentiality of company information.
- Ability to maintain a calm, respectful and professional manner at all times.
- Strong time management and organization skills, able to handle multiple tasks while paying close attention to the details and specifics of each.
- Competitive salary
- 40 hour week – Monday-Friday
- Paid Holidays
*Tri-Mack Plastics provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status or genetic information. Tri-Mack is a drug-free work environment. Pre-employment drug screening (excludes THC) and background checks are required.