Accounting Co-op: Hands-On AP/AR & Month-End Close

MKS Inc.; Richmond (CA); On-site; USD 28,000 - 41,000; Part time

Benefits offered by this job

Global Employee Assistance Program

Additional Flex Day Off with Spending 

Transit Zone 1 Reimbursement

Active Social Committee Programs

Job summary

MKS Inc. in Richmond, CA, seeks an Accounting Co‑op/Intern to support daily accounting activities and learn how financial processes work in a real business environment, with exposure to AP, AR and month‑end tasks.

You will report to the Accounting Manager and perform invoicing, coding, payments, reconciliations, data validation in ERP systems, and assist with month‑end close while gaining hands‑on experience.

Qualifications

• Enrolled in a Bachelor’s Degree program in Accounting, Business Administration, or a related major.
• Basic understanding of accounting concepts such as AP, AR, debits, and credits.
• Good attention to detail when entering numbers or checking documents.
• Comfort using Excel for sorting, filtering, and simple formulas.
• Willingness to learn ERP or accounting software with training.
• Ability to spot mistakes and ask questions when something looks off.
• Clear communication skills when working with the accounting team.
• Good organization skills for handling paperwork and digital files.

Responsibilities

• Support process Accounts Payable including invoice entry, coding verification, PO matching, and preparing items for payment.
• Support Accounts Receivable by creating customer invoices, recording payments, and assisting with aging reviews.
• Reconcile accounts by comparing system balances, identifying variances, and preparing supporting documentation.
• Maintain accurate financial records within ERP systems and shared accounting folders.
• Assist with month-end close including data validation, report extraction, and JE support tasks.
• Support audit documentation by organizing backup files and retrieving required records.
• Contribute to process improvements in AP, AR, and data-entry workflows.

Skills

Accounting basics

Attention to detail

Excel proficiency

Clear communication

Organizational skills

Willingness to learn ERP

Questioning for accuracy

Team collaboration

Education

Bachelor's Degree program in Accounting or related major

Tools

Excel

ERP software

Job description

MKS Inc. in Richmond, CA, seeks an Accounting Co‑op/Intern to support daily accounting activities and learn how financial processes work in a real business environment, with exposure to AP, AR and month‑end tasks.

You will report to the Accounting Manager and perform invoicing, coding, payments, reconciliations, data validation in ERP systems, and assist with month‑end close while gaining hands‑on experience.