About the Job
We Make Remote Work Remarkable • TopTalent from LatAm
Hello! We are GoFasti, a Talent-as-a-Service. GoFasti bridges the gap between world-class developers and designers from LatAm and first-class companies around the globe.
We need an English-fluent Senior Full-Stack Software Engineer, based in Latin America, available to work remotely.
Key Responsibilities
A TypeScript monorepo: a Next.js 16 web app and API, an Expo mobile app, and a Cloudflare Worker.
A PostgreSQL + Prisma data model with dozens of models and a long migration history, shared across apps.
Background systems: webhook handlers (Plaid, Stripe, Linq), queued inbound-message batching, and scheduled jobs.
Security-sensitive paths: encrypted bank tokens and chat content, per-user data scoping, auth across web and mobile.
The AI layer: LLM tool-calling over users' financial data, long-term memory, and proactive insights.
Reviewing AI-generated code, including your own, with a skeptical eye.
Required Skills & Abilities
6+ years as a software engineer, 3+ years shipping production TypeScript/Node backends.
Shipped work at a company that moved money or handled bank or card data (Plaid, Stripe Treasury, Unit, Synapse-era BaaS, card issuing, lending, payroll).
Deep PostgreSQL: migrations safe to run on live data, indexes, transactions, query plans.
Real experience with async systems: idempotency, retries, deduplicating webhooks, jobs that fail halfway.
A security-first instinct around PII, encryption at rest, auth tokens and least privilege.
Solo ownership of production at least once: on-call, reading error tracking, writing root-cause analyses.
Daily use of AI coding tools (Claude Code, Cursor or similar), and clear views on where they go wrong.
Written English good enough that a PR description or incident write-up needs no follow-up questions.
Plaid in production: webhooks, item re-authentication, transaction sync cursors.
LLMs in production: tool-calling, prompt evaluation, cost and latency control.
Next.js App Router and React Server Components.
SMS or messaging compliance (opt-outs, TCPA), or Stripe subscription billing.
Expo / React Native.
