Rafael Pérez Hidalgo·
· Full Stack Engineer

7+ years shipping backend, frontend, payments, and AI integrations for US-based companies. Remote from Brazil · GMT-3.

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TypeScript·Next.js·React·Node.js·NestJS·Angular·Supabase·MongoDB·Redis·PostgreSQL·Stripe·BetterAuth·Clerk·Vercel·Docker·Tailwind CSS·Framer Motion·n8n·Claude Code·MCP Servers·Shadow DOM·Playwright·Turborepo·TypeScript·Next.js·React·Node.js·NestJS·Angular·Supabase·MongoDB·Redis·PostgreSQL·Stripe·BetterAuth·Clerk·Vercel·Docker·Tailwind CSS·Framer Motion·n8n·Claude Code·MCP Servers·Shadow DOM·Playwright·Turborepo·
Rafael Pérez Hidalgo — Senior Full Stack Engineer
Claude Code
MCP Servers
Shadow DOM
NestJS
TypeScript
Next.js
MongoDB
Redis
Vercel
Stripe
Mercado Pago
Asaas
n8n
Supabase
BetterAuth
Clerk
Angular
Chrome Ext
Pipio.ai
Node.js
REST APIs
ClickUp
Linear
PHP
Symfony2
MySQL
CSS
Trello
2023 – 2026
Sep 2023 – Jun 2026

Full Stack Software Engineer

Tallysight

Co-built a sports analytics platform from the ground up — stats per betting house & game, user management, roles, communities, and social picks. Deployed embeddable widgets to The Athletic (NYT), SportingBet, and SGPN.

  • Architected the full platform backend + frontend: user auth, roles, communities, picks creation & feed — Next.js + NestJS + MongoDB
  • Built the embeddable widget SDK (Shadow DOM + Vanilla JS + React): Bet Finder, Odds Comparison, Betslip, Promo Tiles — high-traffic sports media
  • Engineered geolocation-aware odds personalization via Cloudflare/Vercel edge headers + IP fallback across multiple US states
  • Integrated AI-driven CI workflows (Claude Code + Axiom MCP + PostHog MCP) — automated error detection, cut incident response time
Next.jsNestJSTypeScriptMongoDBRedisShadow DOMClaude CodeMCPVercelMulti-tenant
Engineer Power LevelMAXIMUM

Technical Arsenal

The Stack That Ships

Core

TSTypeScript
NNext.js
ReReact
NjNode.js
NsNestJS
NgAngular

Backend & Databases

SbSupabase
MoMongoDB
RdRedis
MyMySQL
PgPostgreSQL
GSPostGIS
~REST APIs
MTMulti-tenant

Auth & Payments

BABetterAuth
CkClerk
StStripe
MPMercado Pago
AsAsaas

Frontend

SDShadow DOM
SKEmbeddable SDKs
TwTailwind CSS
FmFramer Motion
i18i18n
GpGeolocation

Cloud, DevOps & Tools

▲Vercel
GcGCP
DkDocker
GAGitHub Actions
TrTurborepo
n8n8n
LiLinear
CuClickUp

Testing

PWPlaywright
JtJest
HrHurl

AI Workflows

ClClaude Code
MCMCP Servers
LMLLM Integration
PEPrompt Engineering
CIAI-driven CI/CD
AxAxiom MCP
PHPostHog MCP

7+ years of production experience · B.Sc. Computer Science

Side Projects

Things I Built

SaaS · B2B

MeiBOARD

SaaS for Brazilian Micro-Entrepreneurs

Full-featured SaaS for Brazilian MEI: NFS-e invoice issuance, DAS reminder automation, monthly financial reports, and LGPD-compliant storage. Built for the 15M+ MEI market.

Next.jsSupabaseAsaasBetterAuthResendTypeScript
AI · Affiliate

LinkSnap

AI-Powered Affiliate Storefront

Multi-marketplace affiliate storefront with AI-driven product import from URL, custom subdomains per store, and Telegram campaign automation.

Next.jsSupabaseAI IntegrationTelegram BotCustom Domains
Personal Labs

Interactive map to visualize and report geolocated incidents. K-Means clustering, heatmaps, buffer zones, and live pulse hotspots via PostGIS.

Next.jsSupabasePostGISClerkMapbox

Scan receipts, auto-categorize expenses and track your spending in real time. AI extracts merchant, amount, and category from any photo.

Next.jsSupabaseOpenAIBetterAuthTypeScript

AI swaps your face into an official-style Panini 2026 World Cup sticker. Built for the Brazilian market with Asaas payment integration.

Next.jsAI / Face SwapAsaasTypeScript

Available for Freelance & Full-time

Ready to BuildYour Next Product

Senior Full Stack Engineer available for freelance projects and remote full-time roles. Need a product built from scratch, a feature shipped fast, or a team to join? Let's talk.

Hire My Services · Send an Email
Email
rafaelperezbanes@gmail.com
LinkedIn
rafaelperezbanes
Location
Londrina, Brazil · GMT-3

Rafael Pérez Hidalgo · Senior Full Stack Engineer · Freelance & Remote · 2026