Accounts Receivable Specialist

Vast is looking for a Accounts Receivable Specialist, reporting to the Director of Finance, to support the development of the systems that will be required for the design and build of artificial-gravity human-rated space stations. 

In this role, you will manage billing, collections, customer account reconciliation, and AR process improvements that ensure timely cash flow and accurate revenue reporting. This is a key opportunity to help shape scalable financial systems in a fast-paced, early-stage environment.

This will be a full-time, non-exempt position located in our Long Beach location. 

Responsibilities: 

• Prepare and process customer invoices in compliance with contract terms
• Monitor AR aging reports, proactively follow up on past due accounts, and reduce DSO
• Manage customer onboarding including credit terms, tax documentation, and billing setup
• Reconcile customer accounts, investigate discrepancies, and process credit memos or adjustments
• Partner with Sales, Contracts, and Program Management to ensure accurate billing and revenue capture
• Post payments (ACH, wire, check, credit card) and ensure proper application to customer accounts
• Maintain an organized electronic repository of contracts, billing schedules, and supporting documentation
• Support month-end close activities including AR reporting, revenue accruals, and account reconciliations
• Assist with automation and process improvements to strengthen AR performance and cash collections
• Respond promptly and professionally to internal and external billing inquiries
• Assist the Finance team with other ad-hoc projects as needed

Minimum Qualifications:

• Bachelor’s degree in Accounting, Finance, or Business Administration preferred
• 2–5 years of Accounts Receivable experience
• Strong understanding of revenue recognition, invoicing, and collections best practices
• Proficient with Google Suite (Sheets, Docs, Slides)
• Clear and professional communication skills (written and verbal)
• Ability to handle sensitive financial information with discretion

Preferred Skills & Experience:

• Experience in manufacturing or aerospace environments a plus
• Familiarity with NetSuite, Ramp, or similar AR/ERP systems
• Strong understanding of project-based or government contract billing (T&M, FP, Milestone)
• Excel/Sheets proficiency with formulas, pivot tables, and data analysis
• Ability to thrive in a high-growth startup, managing shifting priorities and deadlines
• Analytical, resourceful, and solutions-focused approach to problem solving

Additional Requirements:

• Ability to travel up to 50% of the time
• Willingness to work overtime, or weekends to support critical mission milestones

Pay Range: 

• AR Specialist I: $23.55 - $36.06
• AR Specialist II: $28.61 - $43.27