john
California, United States
Summary
👤
SeniorJohn Leonardo is a Senior Software Engineer known for building reliable, high-scale systems and shipping clean, maintainable code across the full stack. He specializes in distributed systems, cloud infrastructure, parallel computing, and ML deployment at scale, bringing nine years of hands-on experience from startups to large tech companies. Currently at Roblox in Palo Alto, he works on Roblox OS tooling to help people grow, with prior stints at Amazon and IBM and an internship with the California Department of General Services. He is passionate about solving real problems, mentoring others, and continuous learning, and he enjoys collaborating to navigate the tech industry. He brings a practical, cross-stack perspective—from infrastructure to developer tooling—and is always open to chat, collaborate, or help teams ship auditable, scalable software.
9 years of coding experience
Github Skills (145)
sms10
blueprint10
bomber10
sass10
firebase9
smtp9
lerna9
ui-toolkit9
server9
react9
java9
typescript9
swift8
dkim8
mta8
Programming languages (12)
Github contributions (5)
jdleo/React-Firebase-Chat-App
Mar 2020 - Sep 2020
a simple chat app PoC powered by react, typescript, bootstrap, and firebase
Contributions:52 commits, 3 PRs, 24 pushes in 6 months
reactfirestorechat-appchatfirebase
jdleo/Go-Leetcode-Solutions
Apr 2021 - Jun 2021
repository to hold my solutions for leetcode, in Go
Contributions:33 PRs, 50 pushes, 9 branches in 2 months
golangleetcode-solutionsleetcode
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