Representative profile

Senior Node.js Engineer

D. S. · 9+ years · UTC-3 (BRT)

Availability
Available in 2 weeks
Rate band
$$ · $70 to $95 / hr
Experience
9+ years
Industries
Fintech, Payments
  • Node.js
  • TypeScript
  • PostgreSQL
  • AWS
  • Years of experience with payment flows, reconciliation, and the edge cases money creates
  • Writes backends that are boring in the best way: typed, tested, and observable
  • Has led API design for services other teams depend on

This profile represents a backend specialist shape that fintech and marketplace teams request often: someone who has already made the mistakes money teaches you, on someone else’s watch.

Background

Nine years in Node.js backends, the majority spent in fintech and payments. Has built and operated services that move real money: payment intake, ledgering, reconciliation, webhooks from providers that fail in creative ways. Works in TypeScript by default, models data in PostgreSQL, and deploys on AWS. Nearly full overlap with US time zones from Brazil.

Strengths

  • Correctness under load. Idempotency, retries, and exactly-once thinking are habits, not checklist items.
  • API design. Builds contracts other teams can rely on, with versioning and deprecation handled like an adult.
  • Data integrity. Treats the database as the source of truth and knows how to keep it that way through migrations.
  • Operational maturity. Instruments what ships, so incidents are diagnosed from dashboards rather than guesses.

Typical engagement

Full time inside an existing backend team, or as the senior anchor for a payments or billing workstream. Available in about two weeks.

This is a representative sample of the vetted pool. Request it and we confirm real, current availability for a developer with this background.

Frequently asked questions

Is this a real, specific person I can hire?

This is a representative profile of the kind of developer in the vetted pool, not a public listing of one named individual. When you request it, we confirm who is actually available with a matching background and share real details under NDA.

Can I interview them before committing?

Yes. Every match includes an interview, and you can run a paid trial before making it permanent.