About

Posted on Mar 7, 2020 - Updated on Mar 19, 2025
my desk, as of December, 2024

Talk on GopherCon LATAM 2024

👋 Hey, I’m Leonardo Rifeli

🚀 Co-Founder & CTO at Harmo | Data Engineer & Software Architect
💡 Passionate about scalable architectures, data engineering, and cloud solutions

🏢 Professional Background

I’m an Experienced Software Developer and Data Engineer with over 14 years of expertise in scalable systems and high-performance teams leadership.

I co-founded Reviewr (reviewr.me), recognized as one of the most promising startups in Santa Catarina, Brazil, incubated at MIDITEC (5th best startup incubator in the world) and accelerated by Darwin Startups. Later, I co-founded Harmo (harmo.me), a fusion of Reviewr & Gorila, and a partner company of ReclameAqui.

🔥 Tech Stack & Expertise

  • Backend Development: Golang (since 2017), JavaScript (Node.js), Python
  • Cloud & Infrastructure: AWS (Lambda, Step Functions, EKS, RDS Aurora, MWAA/Airflow, SQS, SES, OpenSearch, API Gateway)
  • Data Engineering: Data pipelines, ETL, and AI-driven processing
  • System Scalability & DevOps: SRE, Infrastructure as Code, and Serverless architectures

🎯 What I Do

Every day, I work on:
Leading a team of 12+ engineers
Software Architecture & Backend Development
Data Engineering (Extractors, Pipelines, and AI Processing)
Cloud & DevOps Strategies (AWS, Kubernetes, Serverless)
Architecture Decision-Making & Problem Solving

📍 Location

🏡 I live in Antônio Carlos - SC, Brazil 🇧🇷, where I enjoy family time, nature, and building meaningful tech solutions.

Beyond Work

  • ❤️ Gopher since 2017
  • 📝 Writing at rifeli.dev
  • 📚 Always learning & improving
  • 👰 Happily married

🏊‍♂️🚴‍♂️🏃‍♂️ “Good dream is a dream lived” — Avelino, Thiago