Supervisor, Accounts Payable & Accounts Receivable

About the role

Apex is seeking a Senior Accountant with a focus on revenue accounting for complex satellite bus programs and related service/integration deliverables. Reporting to the Director of Accounting, this role will be responsible for accurate and timely revenue recognition in accordance with ASC 606, across both point-in-time (e.g., hardware delivery) and percentage-of-completion (e.g., study/service contracts) arrangements. You'll also support core month-end close activities, ensuring proper treatment of unbilled revenue, deferred revenue, contract assets, and related reconciliations. This role offers high visibility across sales, operations, and engineering, and is ideal for someone excited about working at the frontier of aerospace while helping scale our revenue function from the ground up.

Responsibilities

• Oversee full-cycle AP and AR operations including billing, collections, and vendor/customer communication
• Manage vendor onboarding, payment terms, W-9 documentation, and customer invoicing workflows
• Partner cross-functionally with Supply Chain, Mission Services, and Finance to resolve billing, PO, and payment discrepancies
• Monitor AP aging, AR aging, cash disbursements, and collections activity to ensure timely processing and strong cash flow management
• Support month-end close activities including reconciliations, accruals, account analysis,
• Help strengthen internal controls, documentation, and segregation of duties across accounting operations for annual audit support
• Identify and implement process improvements, automation opportunities, and scalable workflows to support company growth and increased transaction volume
• Help train and support future AP/AR Analysts while contributing to a high-accountability, process-oriented accounting culture
• What You Bring

Requirements

• 5+ years of AP and/or AR experience
• Experience overseeing full-cycle AP and AR workflows in a high-volume environment
• Experience working within manufacturing, aerospace, hardware, or inventory-driven environments preferred
• Strong process improvement mindset with experience helping scale accounting operations
• Experience with modern accounting and finance tools such as Ramp, Campfire, NetSuite, QuickBooks, or similar systems
• Highly organized with strong attention to detail and follow-through
• Start-up experience or experience in high growth environments
• Experience in aerospace, hardware, or manufacturing environments
• Prior exposure to audit support or pre-IPO environments
• What You'll Gain
• A key role in defining the future of our AP and AR function
• Direct involvement in system transformation (introducing new AP/ AR workflows within custom built ERP system
• A mission-driven culture that values precision, speed, and cross-functional ownership
• Opportunity to join a high growth company positioned to capture significant market share
• Why Join Apex?
• Apex believes in creating a work environment that you look forward to embracing every day. Our employees love working at Apex, and we want you to love it too. We're a fast-growing startup backed by $200M in Series D funding, and we invest heavily in our people from day one.
• What We Offer For Full-time Employees:
• Shared upside: Receive equity in Apex, letting you benefit from the work you create
• Best-in-class healthcare: 100% company-paid medical, dental, and vision for you and your dependents, plus $100k life insurance at no cost
• Comprehensive PTO package to reset and recharge - starting at 15 days vacation, growing to 20+ days annually, plus 10 paid holidays
• Competitive 401(k) plan with generous matching - 100% match on first 3%, 50% on next 2%
• 8 weeks paid parental leave plus childcare reimbursement up to $350/day for work-related travel
• Daily catered lunch and unlimited snacks to keep you fueled throughout the day
• Vibrant community: Monthly office socials, pickleball tournaments, run club, and gatherings for you and your family
• Your dream desk setup and all the tools you need to be your most productive self
• World-class Playa Vista office with the benefit of in-person co

Benefits

Additional Information

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge. For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses. These buses hold the payloads of our customers and are flown on launch vehicles. Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society: ranging from earth observation to communications and more. We'd love for you to join us on our mission of providing humankind access to the galaxy beyond our planet.

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