FULL-STACK DEVELOPER — MIAMI, FL

I build and run real software.

Six production apps — designed, built, shipped and operated end-to-end. Everything here is live and clickable, not tutorial repos. From metal to browser.

See the proof ↓ GitHub ↗ LinkedIn ↗
6APPS IN PRODUCTION
424K+REAL LOADS ANALYZED
288TESTS IN ONE SUITE
100%SELF-HOSTED & OPERATED

PROOF OF WORK

Selected works

Production-grade systems I designed, built and deployed — solo, end-to-end: code, tests, CI, deploys, DNS, backups and security hardening.

ExpedAi

LIVE

AI-native freight load board SaaS for the U.S. expedite niche — a real-time, two-sided marketplace.

  • Full post → bid → award loop over Socket.IO change streams
  • Real driving miles from a self-hosted OSRM engine (72 GB U.S. map)
  • Market analytics over 424K+ real historical loads
  • AI bid-drafting Copilot — a human always approves

ReactNode/ExpressMongoDBSocket.IOOSRMStripeOpenAI

Live ↗ Landing ↗ // code private — demo on request

closing-room

LIVE

Real-estate closing platform — the relational proof: PostgreSQL, transactions and SQL aggregates.

  • Deal graph created in a single transaction
  • Audited document transitions · escrow in integer cents
  • Dashboard computed in pure SQL

TypeScriptPostgreSQLPrismaExpressReact

Live ↗ Code ↗

kryndel

Apache-2.0

Open-source smart-contract observability for the XRPL ecosystem, live on mainnet.

  • Decoded event alerts → Telegram, Discord, signed webhooks
  • SSRF-guarded dispatch with DNS-rebinding protection
  • Stripe billing · API keys + rate limiting · 288 tests

Next.jsTypeScriptMongoDBviemStripe

Live ↗ Code ↗

careflow-lite

v1.0.0

Care-operations dashboard (MERN + TypeScript): patients, follow-up tasks and an audit trail.

  • Role-based access · audited writes · $facet dashboard
  • Live board over WebSockets · CI against real MongoDB
  • Nightly backups with a tested restore

ReactTypeScriptNode/ExpressMongoDBVitest

Live ↗ Code ↗

USCashout Markets

LIVE

Bilingual multi-coin crypto analytics — zero-build vanilla JS front, Express + MongoDB back.

  • 9 coins · XRPL burn watcher over WebSocket
  • Portfolio with historical P&L
  • Hardened after fixing a real stored XSS (strict CSP)

Node/ExpressMongoDBVanilla JSChart.jsWebSocket

Live ↗ Code ↗

Hermes

PRIVATE INFRA

The self-hosted AI ops agent that runs everything above — my production fleet on one Linux server. It executes deploy runbooks with hard verification gates (raw output or it didn't happen), handles GitHub PR/CI operations and scheduled jobs, and drives a job-search pipeline where nothing ever auto-submits.

Linuxpm2MongoDB/PostgreSQLCloudflare TunnelsLLM ops

// told in interviews — screenshots & ops log available

METHOD

The engineering ethos

I don't just write code — I design systems that keep working after I stop looking at them.

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Like a team, even solo

GitHub Flow with protected main, reviewed PRs, Conventional Commits, and CI (lint + type-check + tests + build) on every push.

✓

Evidence-based ops

"Demand the evidence of the effect, not the story of it." Health checks that touch the DB, backups that get restored, deploys verified with raw output.

∞

Own the whole lifecycle

Self-hosted: pm2, MongoDB/PostgreSQL with auth, loopback binds behind Cloudflare Tunnels, nightly tested backups, hardening (CSP, XSS, SSRF).

◈

AI with adults in the room

LLMs where they help — drafting, triage, ops — with schema-validated output, logging, and a human approving anything that matters.

TRACK RECORD

Professional timeline

STACK

The toolkit

CORE ENGINEERING

TypeScriptJavaScriptReactNode.js/ExpressMongoDBPostgreSQL/PrismaRESTWebSocketsPython

TESTING & QUALITY

VitestSupertestTesting LibraryGitHub ActionsGitHub FlowConventional Commits

OPS & SECURITY

Linuxpm2Cloudflare Tunnelssystemdbackups/restoreCSPXSS/SSRF hardeningscrypt/JWTHMAC

AI & INTEGRATIONS

OpenAI APIschema-validated LLM outputAI agent opsStripei18nOSRM/geoZod

The fastest way to evaluate me
is to click my work.

Hiring for full-stack, backend or IT? Let's talk.

rperezga@gmail.com GitHub ↗ LinkedIn ↗