Accounts Receivable Specialist

About Aspen

Aspen is a technology leader in sustainability and electrification solutions. The company’s aerogel technology enables customers and partners to achieve objectives around resource efficiency, e‑mobility, and clean energy. Aspen’s Pyro Thin® products address thermal‑runaway challenges in the electric‑vehicle (EV) market, while Cryogel® and Pyrogel® products are valued by major energy‑infrastructure firms. The company partners with world‑class leaders to leverage its Aerogel Technology Platform® into additional high‑value markets.

Aspen is headquartered in Northborough, Massachusetts.

• Do the Right Thing
• Problem Solver
• Allies
• Drive Forward

The Accounts Receivable Specialist will assist the Accounts Receivable & Revenue Supervisor to manage the company’s revenue cycles through design, implementation, and maintenance of all accounts receivable, commercial invoicing, and cash applications. The role works closely with Commercial Operations to ensure seamless execution of invoicing, monitoring, and timely cash collections.

• Prepare and send accurate, timely invoices to customers, ensuring compliance with contract terms and company policies.
• Receive and post customer payments, accurately applying funds to outstanding invoices and reconciling discrepancies.
• Communicate with customers regarding outstanding balances, payment inquiries, and billing disputes in a detail‑oriented and courteous manner.
• Collaborate with internal departments to resolve issues related to invoicing support documents, billing, and collections.
• Maintain accounts receivable aging reports, monitoring and addressing past‑due accounts.

• Comply with and help achieve internal SOX control and audit requirements in invoice and payment processing.
• Maintain procedures, relevant work instructions, and process documentation.

• Perform account reconciliations to ensure accurate recording of customer transactions and account balances.
• Prepare and distribute regular reports on accounts receivable status, including outstanding balances and collection efforts.
• Perform other related duties as assigned by management.
• Adopt and follow Aspen’s core values of safety, quality, integrity, teamwork, customer service, and innovation on both a personal and professional level.

• High school diploma or GED, or equivalent combination of education and experience.
• College degree with accounting coursework preferred.
• Three or more years of accounts receivable experience required.
• Work experience in a manufacturing environment preferred.
• Proficient in Excel and the Microsoft Office suite.
• Experience with Microsoft Dynamics 365 ERP system is strongly preferred.
• Detail‑oriented approach with solid organization skills.
• Strong problem‑identification and problem‑solving abilities.
• Excellent communication, organizational, and time‑management skills.
• Proven ability to interface with employees, suppliers, and management teams.
• Demonstrated consistency in values, principles, and work ethic.

• Occasionally required to stand, walk, and use hand/finger dexterity.
• Frequently required to sit.
• Occasionally required to climb, balance, bend, stoop, kneel, or crawl.
• Lifting requirements: occasionally up to >20 lb., frequently up to 10 lb., continually up to 5 lb.
• Noise level usually moderate.

The above is intended to describe the general content of and requirements for the performance of this job. It is not an exhaustive statement of duties, responsibilities, or physical requirements. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Aspen offers a comprehensive benefits package that includes medical, dental, vision, tuition reimbursement, paid holidays, sick time, PTO, a 401(k) employer match, life and disability insurance, and other benefits. The company fosters a positive work environment, promotes work/life balance, and provides opportunities for growth in a culture of inclusion, sustainability, and teamwork.

Expected Compensation:
Between $22.12 and $27.64 USD/hour based on experience.

Aspen Aerogels, Inc. is an equal‑opportunity employer. We evaluate qualified applicants without regard to race, color, age, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or other legally protected characteristics.

Aspen Aerogels, Inc. is committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please email  or call (508) 466‑3111 to let us know the nature of your request and your contact information; we will respond promptly.