João Castro
Infrastructure Engineer at Provable
Lisbon, Portugal
Summary
🤩
Rockstar🎓
Top SchoolJoão Castro is an infrastructure engineer with 10 years of experience building and operating large-scale distributed systems, currently designing GPU-intensive Kubernetes and bare-metal platforms for zero-knowledge proving at Provable. He has led infrastructure teams and owned critical production environments for consumer-facing and blockchain products, notably managing MetaMask infrastructure that served millions of daily users at ConsenSys. Comfortable as both a hands-on builder and a technical leader, he authors architectural standards, drives cross-org decisions, and ships internal automation and tooling. His background includes migrating large platforms to cloud-native stacks, operating high-scale app marketplaces with 200M+ users, and running Ethereum node fleets and token infrastructure. Based in Lisbon, João blends deep reliability engineering with cryptography-adjacent systems expertise, and has a track record of winning internal hackathons for practical infrastructure innovations. He’s equally at home troubleshooting low-level ops issues and shaping long-term architecture for fast-moving teams.
10 years of coding experience
9 years of employment as a software developer
Universidade do Minho
English, Portuguese, French, Spanish
Github Skills (79)
browser10
firefox10
browser-extension10
opera10
brave10
plug10
chrome-extension10
metamask10
chrome10
ethereum10
blockchain10
dapp-developers10
javascript9
react-native9
ios9
Programming languages (8)
Github contributions (5)
makemesteaks/makemesteaks.github.io
Oct 2015 - Mar 2017
Contributions:91 pushes, 3 branches in 1 year 5 months
makemesteaks/bored
Jul 2015 - Oct 2017
Contributions:9 pushes, 1 branch in 2 years 3 months
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