Fractional Full-Stack Engineer

Required

2+ years of professional TypeScript experience

Strong React 18 and Next.js experience, including App Router, API routes, and server/client component boundaries

Working knowledge of Postgres and Supabase, including SQL, migrations, Row-Level Security, Auth, and Storage

Experience deploying and debugging applications on Vercel

Comfortable with Git, short-lived feature branches, pull requests, and feature flags

Able to diagnose third-party API integrations, including retries, failures, and rate limits

Writes and maintains unit/component tests and fixes failing tests rather than skipping them

Able to reproduce user-reported bugs, identify root causes, and ship focused fixes

Productive with AI coding tools such as Claude Code or Cursor, while critically reviewing their output

Strong written English and ability to work independently

What you’ll do

Triage and fix bugs across our application and marketing site

Take well-scoped tickets from investigation through deployment

Debug production issues, third-party APIs, and failed background jobs

Maintain dependencies, address security advisories, and keep CI green

Improve automated test coverage, including end-to-end testing

Work directly with our technical lead through GitHub and Linear

You should be comfortable working independently in a fractional environment. We’ll provide clear priorities and technical review, but we expect you to investigate problems, communicate clearly, and move work forward without continuous supervision. This is a good fit for an experienced engineer who wants a stable, ongoing US startup client alongside other independent work. Please apply as an individual contractor, not through an agency.

Strongly preferred

Stripe subscriptions and webhooks

Resend and/or Twilio

Playwright or similar end-to-end testing

PDF generation or document rendering

Google Cloud Run or other containerized services

Linear

Nice to have

LLM API integration

SOC 2 awareness, audit logging, least-privilege access, and secure secrets handling

Additional Info

TypeScript / Next.js / Supabase — Remote, Latin America

This is a long-term independent contractor engagement, not an employee position. Commitment: Minimum 10 hours/week, with the opportunity to increase to 20 hours/week

Rate: $30–$40 USD/hour, depending on experience

Location: Remote — Latin America

Working style: Mostly asynchronous, with some overlap with US Pacific Time

Valsnapp is looking for an experienced, independent full-stack engineer to help us improve and support a live proptech/fintech application. This is a long-term independent contractor engagement, not an employee position.

What you’ll do

Triage and fix bugs across our application and marketing site

Take well-scoped tickets from investigation through deployment

Debug production issues, third-party APIs, and failed background jobs

Maintain dependencies, address security advisories, and keep CI green

Improve automated test coverage, including end-to-end testing

Work directly with our technical lead through GitHub and Linear