Accounting Assistant/Billing and Accounts Receivable Specialist

ERRG; Martinez (CA); On-site; USD 44,000 - 48,000; Full time

Job summary

ERRG is seeking an Accounting Assistant/Billing and Accounts Receivable Specialist for an in-office role in Martinez, CA. You will work under the CFO and collaborate with project managers to drive end-to-end billing from contract award to project closeout.

The role requires a bachelor’s degree in accounting or finance and 3+ years in contract-based invoicing and AR, with strong Excel and Oracle ERP experience. Hybrid schedule not indicated; in-office presence is required.

Qualifications

• Bachelor’s degree in accounting or finance or equivalent experience.
• 3+ years in contract-based invoicing and accounts receivable; project accounting is a plus.
• Proficient in Microsoft Office, incl. Excel XLOOKUP and pivot tables.
• Hands-on experience with a large ERP; Oracle-based ERP is a plus.
• Experience supporting month-end close and financial audits.
• Exceptional attention to detail with multiple deadlines.

Responsibilities

• Prepare client invoices in line with contract terms (lump sum, fixed fee, time & materials).
• Set up and manage projects in JD Edwards; reference contract for billing data.
• Research billing discrepancies and process adjustments.
• Record and apply payments via check, ACH, or wire.
• Follow up on overdue invoices with project managers.
• Prepare and report multi-jurisdiction gross receipts taxes; research GRT when expanding.
• Support internal controls, respond to audits, improve billing workflows.
• Handle other billing, invoicing and accounts receivable tasks as needed.
• Assist with general accounting tasks as time allows.

Skills

Contract invoicing

Accounts receivable

Excel (XLOOKUP)

Pivot tables

Oracle ERP

Month-end close

Audit support

Attention to detail

Organizational skills

Communication

Education

Bachelor’s degree in accounting or finance

Tools

Oracle ERP

JD Edwards

Excel (XLOOKUP, Pivot Tables)

Job description

Accounting Assistant/Billing and Accounts Receivable Specialist

Why You’ll Love Working Here

At ERRG, we believe that each of our projects are significant and the most critical ingredient for success is our people. Our people provide the talent, experience, and passion that lies at the heart of every one of our projects. That is why we can provide the challenges and inspiration to help our people grow professionally and personally.

Some of the great benefits we offer for eligible roles, may include competitive compensation, hands‑on training, educational assistance, and opportunities for career growth and advancement.

About the Role

ERRG is looking for an Accounting Assistant/Billing and Accounts Receivable Specialist. This is an in‑office position reporting to the CFO while working closely with the senior billing specialist. This role will partner with our project managers to manage the full billing function from contract award to project closeout.

This is an in‑person position required to work in our Martinez, CA office

What You’ll Do

• Working closely with project managers, prepare client invoices timely in accordance with lump sum, fixed fee and time and materials contracts. Ensure invoice packages are accurate and include all necessary supporting documentation.
• Set up and maintain projects in JD Edwards referring to the contract for all key billing and invoicing details.
• Research billing discrepancies, process adjustments and resolve invoicing issues.
• Record and apply client payments received by check, ACH or wire transfer.
• Work with project managers to follow up on overdue invoices.
• Monthly preparation and reporting of multiple jurisdictions gross receipts taxes; research GRT requirements when moving into new jurisdictions.
• Adhere to all internal controls and approval procedures, support audit requests, and recommend improvements to billing and collection workflows.
• Other billing, invoicing, and accounts receivable duties, as required.
• Other opportunities for general accounting items, as time allows.

What You Bring

• Bachelor’s degree in accounting or finance or equivalent relevant experience.
• 3+ years of experience in contract‑based invoicing and accounts receivable; project accounting experience an asset.
• Proficiency in Microsoft Office, including Excel xlookup and pivot tables.
• Hands‑on experience with a large ERP is required; an Oracle‑based ERP, an asset.
• Experience supporting month‑end close and financial audits.
• Exceptional attention to detail and the ability to maintain accuracy while managing multiple deadlines.
• Excellent organizational, analytical, communication and problem‑solving skills, including the ability to read and interpret contracts for accounting and invoicing implications.

California Salary Range

$32 - $35 USD

Employment is contingent upon successful completion of a background check and drug screening.

ERRG is committed to providing a safe work environment and to fostering the health and well‑being of its employees. As part of the company's commitment to safeguard the wellbeing of its employees and to provide a safe environment for everyone, ERRG maintains a drug free workplace and complies with the Drug‑Free Workplace Act.

ERRG is proud to be an affirmative action / equal opportunity employer. All qualified applicants will receive consideration without regard to race, creed, gender, marital status, sexual orientation, citizenship status, color, religion, national origin, age, disability, veteran status, or any other status protected under local, state, or federal laws.