Full Stack Developer
June 2025 – Present
A fintech that files taxes and issues invoices for Argentine taxpayers, so they do not have to deal with the tax authority themselves.
Highlights
- I work with ARCA every day, from the procedures a taxpayer actually goes through to the SOAP services behind them
- I own the Clover POS integration end to end: connecting a merchant's terminal, keeping orders and payments in sync, and turning that into the sales ledger the tax engine reads
- I wrote the IIBB settlement engine. It takes a month of invoices and works out what a taxpayer owes, for local and multi-jurisdiction regimes. It has an E2E suite, because the numbers have to be right
- Invoicing runs through me too: credit and debit notes, VAT split by rate, export invoices, and the error handling for when ARCA says no
- Keeping fiscal data flowing means queue-backed workers that retry, back off and cancel cleanly, plus the CSV and PDF parsing that feeds them
- Outside the editor: data modeling, PRDs, technical planning and the roadmap in Linear
Technologies used
- Next.js
- React
- TypeScript
- Node.js
- Prisma
- PostgreSQL
- Redis
- Docker
- GitHub Actions
- Stripe
- Clerk
- Tailwind CSS
