Accounting finance ops

FullSeam

Website
Founded 2026Origin source ↗Checked 2026-09-15

Overview

FullSeam builds agents for corporate accounting. Our agents replace manual accounting tasks that typically happen outside of our customers’ accounting software, like accounts payable, accounts receivable, and reconciliation.

Company description As recorded 2026-11-08
LinkedIn About
Accounting finance opsAI agentBusinessesMid marketSubscription

Product & workflow

FullSeam agents connect directly to your existing tools — ERP, billing platforms, accounting software, and spreadsheets — through secure integrations.

Source-reported As recorded 2026-11-12

Founders & team

Thomas Dowling

Founder/CEO

Tom is the co-founder of FullSeam (W26). FullSeam automates work for corporate accounting teams. He previously co-founded TaxProper (S19), the leading property tax software for institutional real estate investors, which was acquired by Opendoor (NASDAQ: OPEN) for 8-figures in 2022. He advised the Mayor of Chicago and was appointed by Illinois Governor JB Pritzker to oversee a $700m/year state agency. He has a BA from UIUC and an MSc from Oxford, where he was a Rhodes Scholar.

LinkedIn X
Founder profile As recorded 2026-09-15

Aaron Coppa

Founder/CTO

Aaron is the co-founder of FullSeam (W26), the AI employee for finance and accounting teams. He was the founding engineer at TaxProper (S19), the leading property tax software for institutional real estate investors, which successfully exited to Opendoor (NASDAQ: OPEN) in 2022.

LinkedIn
Founder profile As recorded 2026-09-15

Geoff Segal

Founder/President

Geoff is the co-founder of FullSeam (W26), the AI employee for finance and accounting teams. He previously co-founded TaxProper (S19), the leading property tax software for institutional real estate investors, which successfully exited to Opendoor (NASDAQ: OPEN) in 2022.

LinkedIn
Founder profile As recorded 2026-09-15
3team members reported
Source-reported As recorded 2026-09-15

Founded 2026 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedNot documented
Pricing evidenceNo pricing page confirmed
Maturity: Launched · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The company website offers product access through a trial, free start, app download, purchase, or onboarding with existing-account login. Customer adoption is not established by this evidence.

Company website: home Checked 2026-11-12

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Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year
startup.observe Directory coverage · Sources & method