Overview

Paid — later rebranded as Paid Labs — was a San Francisco-based fintech startup founded in September 2014 by Ryan Jackson, an MIT-trained electrical engineer and computer scientist. ^{[1] [2]} Backed by Y Combinator's Summer 2014 batch and seed funding from Founder Collective, the company set out to build an "Autopilot for Accounts Receivable" — a developer-first API that let businesses automate invoicing, payment collection, and reconciliation in roughly 30 minutes of integration time. ^[3]

Paid failed to achieve meaningful scale in the general-purpose accounts receivable market because it was building a horizontal feature in a space where Stripe, PayPal, and established accounting software incumbents could absorb the same functionality at zero marginal cost to their existing customers. The company never disclosed revenue, and third-party estimates placed annual revenue below $1 million with fewer than ten employees throughout its life. ^[4]

Facing commoditization pressure, Paid pivoted to serve the auction industry through a partnership with Auction Mobility, eventually rebranding as Paid Labs. Auction Mobility acquired the company on January 25, 2019 — roughly four and a half years after founding. ^[5] Auction Mobility itself was subsequently acquired by Auction Technology Group in October 2020, folding Paid Labs' technology into a larger industry consolidator. ^[6] Jackson departed post-acquisition and joined Modern Treasury as a Product Manager. ^[7]

Founding Story

Ryan Jackson founded Paid in September 2014, immediately following the company's participation in Y Combinator's Summer 2014 batch. ^{[1] [2]} Jackson held undergraduate and graduate degrees from MIT in electrical engineering and computer science — a technical pedigree that shaped the company's developer-first product philosophy. ^[8]

Jackson was not a first-time founder. Before Paid, he had built or co-built at least three prior ventures: MicroEval, RWJ Development, and Theorem, Inc. ^[9] He also participated in the Y Combinator program twice, though the public record does not confirm which earlier company was his first YC entry. ^[10] His YC alumni status was visible enough that he was later recruited as a mock interviewer for a 500 Startups pre-accelerator program, listed alongside other YC alums as "Ryan Jackson of Paid." ^[11]

The specific pain point that drove Jackson to start Paid is not documented in any public interview or blog post. The most plausible inference — given his engineering background and serial founding history — is that he encountered the friction of B2B invoicing and payment collection firsthand while running earlier ventures, and recognized that no developer-friendly abstraction existed for the full accounts receivable lifecycle. The Stripe analogy was deliberate: just as Stripe had abstracted payment processing into a few lines of code, Paid aimed to do the same for the messier, post-payment workflow of invoicing, reminders, and reconciliation.

The company launched with a skeleton team. At the time of its YC listing, Paid had just two employees. ^[12] Whether Jackson had a co-founder or operated as a solo technical founder is not confirmed in the public record. The company was headquartered in San Francisco, consistent with its YC affiliation and the fintech infrastructure ecosystem of the time. ^[13]

The initial vision was unambiguously horizontal: build the best API for accounts receivable and sell it to any company that needed to invoice customers and collect payments. The pivot to the auction industry came later — and was not part of the founding thesis.