Internship Invoice Processing Jobs in California

Company

AnySignal is a startup whose mission is to usher in the next generation of RF products and services. For the most demanding space and defense missions, AnySignal provides a flexible platform with world-class performance that is easy to deploy, monitor, purchase, and upgrade. Our team has a diverse range of backgrounds spanning cloud computing, artificial intelligence, communications and sensing, embedded systems, and more.

The Role

The Accountant will be a key member of AnySignal’s Finance team and the day-to-day owner of our accounts payable and accounts receivable functions. This role combines high-volume transactional processing across invoices, payments, collections, and credit card activity with growing ownership of general ledger, reconciliation, and month-end close responsibilities.

This is a development role on the accounting track. The right person will treat AR/AP as the foundation, not the ceiling. Over time, this role will expand into broader accounting ownership, including close activities, financial reporting support, process improvement, and internal controls. It is an ideal opportunity for someone who wants to build the technical foundation, judgment, and process ownership needed to grow into Senior Accountant, Accounting Manager, and eventually Controller-level responsibilities.

What You’ll Do

Accounts Payable

• Own day-to-day accounts payable activity, including invoice entry, payment preparation, data validation, and documentation.

• Process and match invoices to purchase orders, resolving discrepancies as needed.

• Manage payment schedules, including ACH, wire, and check payments.

• Monitor AP aging and ensure accuracy of vendor payment terms.

• Respond to vendor and internal stakeholder questions in a timely and professional manner.

• Verify accuracy of data entry and general ledger coding to ensure transactions are recorded to the correct accounts and departments.

Accounts Receivable

• Prepare, review, and distribute customer invoices.

• Manage collections activity and follow up on outstanding balances.

• Process and reconcile customer payments and resolve payment discrepancies.

• Perform weekly AR reconciliations and support cleanup of historical transactions.

• Review and maintain customer deposit accounts.

• Prepare and distribute weekly aging analysis to internal stakeholders.

General Accounting & Month-End Close

• Own assigned month-end close activities across AR and AP, including account reconciliations, accruals, prepaids, and supporting schedules.

• Prepare and post journal entries with appropriate supporting documentation.

• Assist in maintaining the integrity of the general ledger and chart of accounts.

• Reconcile bank, credit card, and balance sheet accounts, investigating and clearing reconciling items.

• Support the preparation of financial statements and variance analysis.

• Provide commentary on key drivers behind period-over-period changes.

• Assist with audit preparation, schedules, and requests from internal and external auditors.

• Maintain accurate financial records and support compliance with company policies and GAAP.

Process Improvement & Controls

• Identify opportunities to streamline AR/AP, close, and reconciliation processes.

• Improve data quality, documentation, and internal controls as transaction volume grows.

• Help document accounting procedures and contribute to a scalable finance and accounting infrastructure.

• Support ad hoc analyses, reporting, and special projects as needed.

What We’re Looking For

• Bachelor’s degree in Accounting, Finance, or a related field.

• 1–3 years of accounting experience, ideally including accounts payable and/or accounts receivable.

• Strong new graduates with relevant internships and a clear interest in the accounting track will also be considered.

• Solid understanding of accounting fundamentals and GAAP.

• Experience supporting month-end close is a plus.

• Proficiency with accounting or ERP systems.

• Strong Excel or Google Sheets skills.

• High attention to detail and a strong sense of ownership.

• Ability to manage high-volume, deadline-driven work accurately and consistently.

• Clear, professional communication with vendors, customers, and internal stakeholders.

• Curiosity about why the numbers move, not just how to process transactions.

• Ambition to grow on the accounting track toward broader ownership and leadership responsibilities.

• CPA candidacy or intent to pursue CPA certification is a plus.

Growth Opportunity

This role is designed for someone who wants to build a long-term career in accounting. As the company scales, the Accountant will have the opportunity to grow from transactional AR/AP ownership into broader general ledger responsibilities, full-cycle month-end close, financial reporting, process improvement, and eventually supervisory responsibilities.

We will invest in the right person’s development through expanded scope, mentorship, and support for relevant certification, including CPA preparation where applicable.
Export Control Requirements

To comply with U.S. Government space technology export regulations, including ITAR, applicants must be a U.S. citizen, lawful permanent resident, protected individual under 8 U.S.C. 1324b(a)(3), or eligible to obtain the necessary authorizations from the U.S. Department of State.

Equal Opportunity & Accessibility

AnySignal is committed to providing equal employment opportunities to all applicants and employees. Employment decisions are based on qualifications, merit, and business needs, without regard to any characteristic protected by applicable law.

If you require a reasonable accommodation at any stage of the hiring process, please contact us at careers@anysignal.com. We are committed to providing an accessible hiring process for all candidates.

AnySignal is an Equal Opportunity Employer, including individuals with disabilities and protected veterans.