Open to opportunities

João Massan

@joomassan

Message

I build cloud-native platforms and high-throughput data pipelines at scale.

Brazil

Message

What I'm looking for

I'm open to Senior or Staff direct-hire and contract opportunities with US-based companies, available as a foreign contractor or through an LLC. I'm interested in building cloud-native platforms, high-throughput systems, and applied AI pipelines.

I'm embedded at eBay, engineering backend services and high-throughput data pipelines that improve product discoverability across its global marketplace at billions-of-events-per-day scale.

Previously, I architected Farmbits' cloud-native agribusiness platform from scratch, owning AWS EKS infrastructure, Java/Spring Boot microservices, Vue.js frontend, and Flutter mobile development as the sole engineer. I've also modernized NET/Claro's national sales platform from a Java EE monolith to Spring Boot microservices and ReactJS, and built VoIP predictive dialer and IBM Watson NLP chatbot integrations.

Across 20+ years, I've built production systems for marketplaces, SaaS, e-commerce, telecom, and fiscal technology, including platforms for Carrefour, Infracommerce, BRCont, and NET. I'm actively investing in applied AI, including MCP servers, PySpark, and production AI pipelines.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

eBay Inc.

May 2022 - Present (4 years 3 months)

Embedded full-time at eBay Inc., engineering backend services and data pipelines that drive product discoverability across eBay's global marketplace at billions-of-events-per-day scale.

Java Python Kubernetes AWS Data Pipelines Backend Engineering