Horion Dreher
Senior Software Engineer at Mercado Livre
Santa Catarina, Brazil
Summary
👤
Senior🎓
Top SchoolHorion Dreher is a Senior Software Engineer with 7 years of experience building systems that span from low-level embedded firmware to cloud-hosted services, with deep expertise in C++, Rust, Flutter/Dart, Linux, and VoIP. He has led high-impact projects at Mercado Livre, including redesigning a Latin America-wide reporting pipeline processing millions of events per day and delivering fiscal process changes that unlocked ~$5M in annual savings. Comfortable as a hands-on developer and technical leader, he has run cross-team dependencies, built real-time and CI/CD systems, and automated workflows using LLMs to save engineering time. His background in electronics and early work on UART/SPI and heapless firmware gives him an uncommon ability to reason across hardware-software boundaries. Based in Santa Catarina, Brazil, he combines pragmatic product-minded engineering with experience in telecom systems, cloud deployments, and full-stack app delivery.
7 years of coding experience
5 years of employment as a software developer
Technician, Electrotechnical Technician, Technician, Electrotechnical Technician at Serviço Nacional de Aprendizagem IndustrialUndergraduate, Electronics Engineering, Undergraduate, Electronics Engineering at Federal University of Technology - Parana
English
Stackoverflow
63reputation
6kreached
0answers
1question
Github Skills (36)
coc-nvim8
explore8
push-notifications7
storage7
crashlytics7
android7
firestore7
firebase7
react7
receipt-validation6
database6
auth6
obsolete6
vue6
in-app-purchase6
Programming languages (4)
Github contributions (5)
horiondreher/atmega328p_mqtt
Oct 2018 - Apr 2024
Contributions:1 push, 1 branch in 5 years 7 months
horiondreher/go-web-api-boilerplate
Apr 2024 - Feb 2025
Some Web API boilerplate using Go and SQLC
Contributions:2 PRs, 24 pushes, 2 branches in 9 months
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