Senior software engineer, ten years on the road.
Since 2016: started in support and now a software engineer. CTO of RanGO and Acesso Club in parallel.
TypeScript and Node.js day to day; React, Next.js, React Native, and Flutter on the other end.
I work with banking integrations, messaging, and systems that need to stay up every day.
Joined in March 2016 in technical support, helping people who used the ERP every day. Four years of Delphi later — junior to mid-level, interfaces, REST integrations, and FireDAC — I migrated the stack to Node, TypeScript, and microservices.
Concebi, arquitetei e desenvolvi integralmente dois SaaS multi-tenant hoje em operação com clientes reais: RanGO (2024) e Acesso Club (2025). Pagamento, WhatsApp oficial, iFood, NFC-e e nota fiscal inclusos.
I work both ends: backend with modeling, queues, and integrations, and front-end and mobile in React, Next.js, React Native, and Flutter. I like following the product from the database to the screen.
Restaurants needed full delivery and management without per-order commission.
CTO and technical lead: conceived, architected, and built everything — API, web, and waiter app with synced orders and tables.
Real-time orders (WebSockets), Mercado Pago with split and recurring payments, WhatsApp, iFood, NFC-e, Cognito, CASL, BullMQ, Turbo monorepo, and test coverage above 90%. rangodelivery.com ↗
Connect consumers and businesses: points, challenges, raffles, and QR code validation.
CTO and technical lead: NestJS API with CQRS, BullMQ queues on Redis, rate limiting, i18n, Next.js dashboard, and Flutter app.
Over 3,000 active users. Two gateways (Mercado Pago and Asaas), biometrics, secure storage, push, deep links, in-app purchases, Firebase, and Twilio. meuacessoclub.com.br ↗
March 2016, supporting people who used the ERP every day. That's where I learned the real cost of a production bug.
First promotion. ERP in production: interfaces, REST integrations, and data access with FireDAC.
Large relational database, old business rules, client on the phone. The foundation of how I think about legacy migration.
PixHub, Toty ecosystem, and the transition from Delphi ERP to Node.js, TypeScript, and distributed systems. In parallel: CTO at RanGO (2024) and Acesso Club (2025).
Remote, full-time or freelance. Senior software engineer — backend, front-end, and mobile — with deep experience in payment integrations.
luizbandeira@