📍 São Paulo, Brazil
📧 marcos.lacerda@outlook.com | 🔗 LinkedIn |
I build digital products that work — from the first commit to the first real transaction.
Over the past 10+ years, my career has followed one thread: using technology to solve real business problems. I'm not the dev chasing the prettiest code on the wall — I'm the one asking "what problem are we solving?" before opening the editor.
At Turbi, I joined on day zero and was the sole iOS developer for the first 3 years — building the only channel of a fully digital car rental operation. The app handled facial validation (FaceTec 3D Liveness), remote vehicle control via Bluetooth, IoT telemetry, PCI-compliant payments, and more. Later I moved to backend (Node.js) and Flutter to solve operational pain points, and closed with a real-time IoT telemetry pipeline using GCP PubSub and MongoDB Time Series.
Now I'm building Agent Trip — a travel planning app I designed and develop end-to-end as a solo founder. Flutter + NestJS + GCP + Firebase. 200+ downloads and first real transactions in 3 months on the stores.
- 🏗 Founding Engineer at Turbi — Built the iOS app from day zero; sole iOS developer for 3 years in a fully digital car rental operation
- 🔐 Pioneered 3D facial validation in Brazil — Researched and implemented FaceTec 3D Liveness in 48h after a security incident — technology now standard in banks and fintechs
- 🔄 Product-minded engineer — Voluntarily moved to backend & Flutter to solve operational problems, acting as informal PO with stakeholders
- 📡 IoT telemetry at scale — Built event-driven pipeline processing thousands of real-time messages (GCP PubSub + MongoDB Time Series)
✈️ Solo founder — Agent Trip: 200+ downloads, first real transactions in 3 months, full-stack from product strategy to infrastructure
Agent Trip — Travel planning app built from scratch as a solo founder.
- 📱 Mobile: Flutter/Dart · Clean Architecture · DDD · BLoC/MVVM · 15+ feature modules
- 🔧 Backend: NestJS · TypeScript · 15+ modules · Jest · Prisma · PostgreSQL
- ☁️ Infra: GCP (Cloud Run, Cloud SQL, PubSub, Tasks, Scheduler) · Firebase · GitHub Actions · Xcode Cloud
- 📊 Product: PostHog · GA4 · Mercado Pago · Gemini AI · Design System
