Lucas Milhorança

— Experience

1. Mid-level Full Stack Developer · iPag Pagamentos Digitais

   04/2025 — present
   • Led the new end-to-end checkout (Laravel API + React frontend), enabling new acquirer partnerships.
   • Optimized the batch transaction processing API, cutting average time from 30s to 2s by tuning MySQL indexes.
   • Fixed slow queries in internal reports, bringing response times down from ~20s to under 1s.
   • Led a rewrite of the card vault with envelope encryption and shipped a PIX integration with Santander, cutting operational fees by ~84%.
   • Shipped same-day (D0) PIX settlement, moving up payments that used to take up to D+2.
   • Integrated an external MPI provider for 3DS authentication on card transactions.
   • Built EDI file ingestion for sales and transaction reconciliation.

2. Full Stack Developer Intern · Nimbus Sistemas

   01/2025 — 12/2025
   • Built a PIX payments microservice (Node.js/Fastify + PostgreSQL) integrated with C# and Node.js products.
   • Developed the Payment Methods and Default Payments modules of the Nimbus Cloud ERP, using Clean Architecture, NestJS and a React/Next.js frontend.

3. IT Assistant — Apprentice · Gasparim

   10/2022 — 01/2025
   • Rolled out the Protheus ERP across the Seeds and Animal Nutrition units, configuring modules and designing reports.
   • Built a gate/vehicle control system (Node.js/Express, MongoDB, Redis, React/Vite) for company properties.

B.Sc. in Information Systems — Universidade do Oeste Paulista (UNOESTE), 2022–2026.

— Stack

• TypeScript
• JavaScript
• PHP
• Laravel
• Node.js
• NestJS
• Fastify
• Express
• React
• Next.js
• Vite
• Java
• Spring Boot
• C#
• .NET
• MySQL
• PostgreSQL
• MongoDB
• Redis
• RabbitMQ
• AWS
• AWS KMS
• EC2 / S3
• Oracle Cloud
• Docker
• Kubernetes
• GitHub Actions
• Git
• Clean Architecture
• DDD
• TailwindCSS

— Contact

If you've got a project to build or a role to fill, reach out.

[email protected]