Hi, I'm
Marcos
Fullstack Developer
I build web applications end to end — fast, accessible interfaces, robust APIs and reliable infrastructure.
Who's behind the code
I'm a fullstack developer who loves turning ideas into complete digital products. I work across every layer: from interface design to data modeling and deployment.
I care about clean code, performance and experiences people actually want to use. I'm always learning and experimenting with new technologies.
Professional experience
Support & Customer Success Analyst
cVortex
At cVortex, an AI-powered omnichannel SaaS platform, I work at the intersection of customer, product and engineering: combining technical support, customer success and building internal tools that drive efficiency and save time.
- AI integrations in the omnichannel SaaS platform, powering automation and support
- Troubleshooting and problem-solving across complex workflows
- Consuming and integrating APIs (REST and GraphQL) and writing SQL queries
- Python automations to remove manual work and save time
- Building internal applications that integrate systems and boost efficiency
- Strong grasp of business rules with direct contact with product and customers
Featured projects
Projects I've built, focused on architecture, quality and best practices.
Raízes do Nordeste — Backend API
Management API for a multi-unit restaurant chain (franchises): omnichannel orders (app, web, kiosk, counter, pickup), payments and a loyalty program — built with Clean Architecture and DDD per bounded context.
- Clean Architecture + DDD per bounded context, with a pure domain (zero framework imports)
- Payments with webhook as source of truth: idempotent, transactional and UNIQUE(order_id) against double payment
- Decimal-safe money pipeline: Postgres Decimal → big.js → JSON string, float never appears
- Channel-aware orders with server-side price validation (anti-tampering) and optimistic locking on status transitions
- Repository Pattern with Symbol injection (swappable ORM) and a global exception filter mapping domain errors → HTTP
Technologies I use
Tools and languages I work with day to day, from the frontend to infrastructure.
Frontend
Backend
DevOps & Tools
Let's talk
Got a project in mind or just want to chat? My inbox is always open.