Taxwire
Jan 2024 - present
Founding Engineer (1st employee)
Global sales tax, automated.
After seven years in AI I wanted to build systems where speed and correctness both matter. Sales tax compliance needs both, because every transaction has to compute fast and every return has to be right.
I joined as the first engineer and built the systems that run global sales tax inside finance and commerce stacks. Compute: a real-time tax calculation API in FastAPI that returns the exact tax on every transaction, plus the global nexus engine, the US sales tax engine, and a multi-currency exchange layer. Ingestion: Temporal pipelines that bring in 100M+ transactions a month from Stripe, QuickBooks, Shopify, Business Central, Odoo, Maxio, Measure, and Rillet, with webhooks, historical backfill, and a reconciliation system that catches drift. Ops: a Temporal-driven backfill orchestrator, an RWX-based CI/CD pipeline, and an internal Slack /deploy bot. Python, FastAPI, DuckDB, PostgreSQL, Temporal.
I also ran integration support for our first 200 customers, and I built a certification program for customers' own API integrations.







