1161 - Senior Full-Stack Software Engineer

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OtherFull Stack Software Engineer

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Quick Summary

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,

Requirements Summary

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,

Technical Tools

OtherFull Stack Software Engineer

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 NY, preferable Manhattan.

We are looking for someone with exceptional communication and relationship-building skills, who embraces changes while maintaining strong attention to detail. An interested and proactive person, who's constantly learning and improving their skills.

Are you the one we are looking for?

Responsibilities

~1 min read

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A TypeScript monorepo: a Next.js 16 web app and API, an Expo mobile app, and a Cloudflare Worker.
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A PostgreSQL + Prisma data model with dozens of models and a long migration history, shared across apps.
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Background systems: webhook handlers (Plaid, Stripe, Linq), queued inbound-message batching, and scheduled jobs.
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Security-sensitive paths: encrypted bank tokens and chat content, per-user data scoping, auth across web and mobile.
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The AI layer: LLM tool-calling over users' financial data, long-term memory, and proactive insights.
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Reviewing AI-generated code, including your own, with a skeptical eye.

Requirements

~1 min read

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.

Nice to Have

~1 min read

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.