AI agents for corporate accounting teams
HQ: New York, NY | Founded: 2025 | Employees: 4 | Stage: Seed | Website: https://fullseam.com
FullSeam provides AI agents for corporate accounting and finance teams. The platform handles accounts receivable (invoicing, collections, cash application), accounts payable (bill intake, GL coding, vendor communication), reconciliation (GL vs bank/subledger matching with variance flagging), and more. Agents plug into existing ERPs, billing systems, and spreadsheets — no migration or process change required. Founded in 2025 by Thomas Dowling (CEO), Aaron Coppa, and Geoff Segal — the same team that founded TaxProper (YC S19). TaxProper was the leading property tax software for institutional real estate investors, processing over $1B in annual payments, and was acquired by Opendoor (NASDAQ: OPEN) for 8 figures in 2022. Dowling is a Rhodes Scholar (MSc Oxford, BA UIUC), advised the Mayor of Chicago, and was appointed by Illinois Governor JB Pritzker to oversee a $700M/year state agency. Coppa was the founding engineer at TaxProper and worked on financial infrastructure at Amazon. Segal was co-founder at TaxProper through all phases from zero to exit. YC Winter 2026 batch. Raised ~$500K from Y Combinator, plus investment from Kadan Capital and Velocity Catalyst Fund. 4 employees. HQ in New York, NY.
FullSeam's founding team is exceptional — 2nd-time YC founders with a prior 8-figure exit (TaxProper to Opendoor). Tom Dowling's background (Rhodes Scholar, advisor to Chicago Mayor, appointed state commissioner) adds credibility. The product is a natural next step from TaxProper (property tax payments → broader AR/AP/reconciliation). Very early with $500K+ from YC and Chicago-area funds. Key risk: crowded space with many AI-accounting startups.
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