AR/AP Specialist — Detail-Driven, Part-Time

Calibration Technologies, LLC.; Columbia Township (MO); On-site; USD 21,000 - 39,000; Part time

Job summary

Calibration Technologies, LLC is seeking an organized Accounts Receivable/Payable Specialist for a part-time role in Missouri. You will handle customer payments, invoicing, and routine AP activities, while maintaining accuracy and compliance.

Ideal candidates are detail-oriented, able to work independently, and communicate professionally with customers and vendors. Responsibilities include processing payments, generating invoices, reconciling AR, and supporting the corporate accounting function.

Qualifications

• High school diploma or equivalent.
• At least one year of accounts receivable, accounts payable, bookkeeping, or related experience.
• Strong attention to detail and accuracy.
• Strong organizational and time-management skills.
• Ability to handle confidential financial information with discretion and integrity.
• Strong written and verbal communication skills.
• Ability to learn and effectively use accounting software and ERP systems.
• Proficiency with Microsoft Office, particularly Excel and Outlook.
• Reliable, trustworthy, and accountable.

Responsibilities

• Prepare, post, verify, and record customer payments and accounts receivable transactions.
• Create and submit customer invoices according to company practices.
• Monitor outstanding customer accounts and follow up on past-due balances.
• Draft standard past-due correspondence and contact customers to request payment.
• Research customer discrepancies and resolve past-due account questions.
• Prepare reports regarding the status of customer accounts.
• Assist with periodic accounts receivable reconciliations.
• Assist with generating monthly billing statements based on the general ledger.
• Collect and maintain customer tax-exempt documentation.
• Maintain customer information within Avalara and other applicable systems.
• Process credit card transactions and check deposits and post cash receipts.
• Maintain customer information in the ERP system, SAP payment portals, and credit card websites.
• Assist with other cash receipt and billing activities as needed.
• Assemble, review, and verify invoices, refunds, and check requests.
• Verify invoices are paid according to agreed-upon payment terms.
• Organize and maintain vendor invoices and supporting documentation.
• Follow up with vendors regarding invoices and payment questions.
• Verify products or services have been received before issuing payment.
• Research and resolve unusual or questionable invoices with internal departments and vendors.
• Prepare supporting documentation and reports for weekly AP review.
• Prepare and process weekly check and ACH payment runs.
• Assist with administration of the corporate credit card program.
• Maintain accurate and organized financial records.
• Support accounting processes and projects as assigned.
• Work collaboratively with Accounting and other departments to resolve discrepancies and ensure timely processing of transactions.

Skills

Accounts Receivable

Accounts Payable

Bookkeeping

Data Entry

Excel

Education

High school diploma or equivalent

Associate or bachelor's degree in accounting/finance

Tools

ERP systems

Avalara

SAP

Job description

Calibration Technologies, LLC is seeking an organized Accounts Receivable/Payable Specialist for a part-time role in Missouri. You will handle customer payments, invoicing, and routine AP activities, while maintaining accuracy and compliance.

Ideal candidates are detail-oriented, able to work independently, and communicate professionally with customers and vendors. Responsibilities include processing payments, generating invoices, reconciling AR, and supporting the corporate accounting function.