Joel Gaff, Jr.

Why I'm a fit for Boldin's Full Stack Engineer

Here's what the posting asks for, and what I've actually done.

Server-side framework and relational database (Ruby on Rails)

Four-plus years of Rails. I've designed, built, and run nearly a dozen production Rails apps on my own, on SQL (SQLite).

Third-party API integrations, with sound reasoning about failure

Partita Doppia imports from Xero over its API: chart of accounts, tax rates, contacts, invoices and bills with payments, transfers, and manual journals. Re-running the import updates records in place, and Xero's CSV exports work as a fallback.

Financial-account aggregation

Partita Doppia reconciles against a nightly SimpleFIN bank feed or uploaded CSV, OFX, and QFX statements, with ranked match suggestions, bank rules, and undoable matches.

Signup and other high-stakes flows

Partita Doppia's first run walks you through "Set up your books" with an emailed six-digit code, and sign-in is passwordless. Its UI is built to work on a phone.

Fintech and sensitive user data

Partita Doppia handles a small business's books and bank data, and uses Active Record encryption.

Write tested, maintainable code

Partita Doppia and Grateful Deploy ship with Minitest suites and a pre-push hook.

Front-end framework proficiency

My Rails front ends are Hotwire. I've also written a TypeScript phone web app, omacaffeine-phone.

To be upfront: React, payment processors, and webhook-driven billing would be new for me, and my experience comes from my own production apps rather than an employer.