[Hiring] Senior Full-Stack Software Engineer @GoFasti

Role Description

We need an English-fluent Senior Full-Stack Software Engineer, based in Latin America, available to work remotely. 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.

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.

Qualifications

• 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.

Requirements

• It's a plus:
• 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.

Benefits

• The salary range offered for this position varies from (USD) $3,000 - $3,200 per month, depending on seniority and skillset.
• This position is for a full time contract, through a payroll platform.
• The talent will work remotely allocated at our client.

Company Description

GoFasti bridges the gap between world-class developers and designers from LatAm and first-class companies around the globe.