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lcssimonini/README.md

Hi, I'm Lucas Simonini 👋

Senior Backend Engineer with 15+ years building high-scale distributed systems for global companies like TUI, adidas, and Zup Innovation. Currently architecting pricing and availability APIs serving millions of requests daily.

Based in Zaragoza, Spain 🇪🇸 — 12+ years working with distributed teams across Europe and Latin America.

🛠️ Tech Stack

Languages

Java Kotlin Python TypeScript JavaScript

Frameworks

Spring Boot Quarkus Django

Cloud & Infrastructure

AWS Terraform Kubernetes Docker

Databases & Messaging

PostgreSQL MongoDB Oracle Apache Kafka Elasticsearch DynamoDB AWS SQS

Tools & CI/CD

Git Jenkins GitLab CI GitHub Actions New Relic Postman IntelliJ IDEA

🏗️ What I Do

  • Design and build high-throughput microservices handling millions of daily requests
  • Architect event-driven and serverless systems on AWS
  • Lead technical teams and mentor engineers on distributed systems best practices
  • Drive system design improvements and strategic refactoring initiatives

🏢 Career Highlights

  • TUI Group — Architecting the pricing & availability platform powering accommodation APIs at scale (Java 21, Spring Boot, Quarkus, AWS Lambda)
  • adidas — Built serverless compliance systems ensuring GDPR/LGPD across 300M+ members in 50+ countries; developed adiClub membership backend processing 500K+ events/day
  • DOMVS iT — Led engineering team managing payment integrations; built telephony systems handling 500K+ calls/month
  • Zup Innovation — Developed highly scalable telecom systems with microservices architecture on Azure

🌍 Languages

🇧🇷 Portuguese (Native) · 🇬🇧 English (Fluent) · 🇪🇸 Spanish (Professional)

📫 Get in Touch

LinkedIn Email

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