AR Specialist

Mishimoto is meticulously engineered for enthusiasts whose vehicles are an extension of their personality and passion. For over two decades, we've built performance cooling and engineered solutions for people who push their vehicles further — and we're scaling fast, with a clear run at $100M in revenue ahead of us. We're motorheads first: built for car enthusiasts, by car enthusiasts, and every function in this building — including Accounting — exists to keep that mission moving forward without friction. As we grow, the businesses we sell through are only getting more complex — more marketplaces, more channels, more moving parts in how cash actually lands. That's exactly the gap this role is built to close. We're hiring a dedicated Accounts Receivable Specialist to own AR end-to-end across our channel mix — with particular depth in Amazon and eBay marketplace receivables. This is a 100% AR role: a net-new, standalone seat (not a shared duty bolted onto someone else's plate, and not a broader accounting/staff role with AR mixed in), created specifically so AR gets the focused, full-time ownership it needs as our marketplace and B2B volume scales. We're looking for someone with a solid, seasoned AR background who can hit the ground running — you'll be the person who knows exactly what's owed, why, and where every dollar of remittance actually went. What You'll Do Own the end-to-end AR process: invoicing, cash application, collections, and aging across DTC, B2B, and Marketplace channels. Reconcile Amazon Seller Central and Vendor Central settlements — tying remittances back to orders, fees, chargebacks, reimbursements, and deductions line by line. Reconcile eBay Managed Payments payouts against orders, refunds, and marketplace fees, resolving discrepancies before they age into write-offs. Investigate and dispute short-pays, unauthorized deductions, and chargebacks across marketplace and B2B accounts, tracking recovery to close. Maintain accurate AR aging reports and drive proactive collections on past-due B2B accounts. Partner with the Accounting Supervisor and Controller during month-end close on AR-related journal entries, accruals, and reserve analysis (bad debt, chargeback reserves). Serve as the go-to AR resource during audits, producing clean, well-documented support on request. Identify and flag systemic reconciliation issues — fee structure changes, mapping errors, recurring deduction codes — rather than just clearing the queue transaction by transaction. Work cross-functionally with Marketplace/Ecommerce Ops and Customer Service to resolve order-level disputes that block cash application. Your Creds 7–10 years of hands-on Accounts Receivable experience — this is a seasoned seat, not an entry point. Meaningful, specific experience reconciling Amazon (Seller Central and/or Vendor Central) and eBay marketplace payouts is required. Associate's degree or accounting/finance certificate preferred; a bachelor's degree is not required — we're hiring for depth of hands-on AR experience, not a specific credential. Comfort working directly in marketplace seller/vendor portals — not just from a downstream ERP report. Solid understanding of marketplace fee structures: referral fees, FBA/fulfillment fees, chargebacks, returns, and promotional deductions. Strong Excel/spreadsheet skills for reconciliation work. Ecommerce, DTC, or consumer products industry background. Extra Credit Experience with NetSuite or a similar ERP system for invoicing and cash application. Comfort with BI tools (Tableau or similar). Experience in a multi-channel business (DTC + B2B + Marketplace) with high SKU count. Familiarity with Snowflake or similar data warehouse environments. Automotive aftermarket or performance parts industry experience. You Are Good At Digging into a discrepancy until you find the root cause, not just the offsetting entry. Staying organized across dozens of open items without letting anything quietly age past 90 days. Communicating clearly with both internal finance partners and external marketplace/customer contacts. Working independently in a lean, fast-moving accounting team where ownership is real and the queue doesn't wait. Who You Are Detail-obsessed — a mismatched penny bothers you until it's resolved. A self-starter who takes ownership of a function rather than waiting to be told what's next. Motivated by building something clean and repeatable, not just clearing today's backlog. Genuinely interested in cars and the enthusiast space — or at least excited to learn why our customers care so much. Working Conditions This role is onsite at our headquarters in Garnet Valley, PA. #J-18808-Ljbffr