Zelimir Fedoran
Founder at Spool Labs
Old Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolZelimir Fedoran is a founder and distributed systems engineer with 14 years of experience building payments and storage infrastructure, currently leading a Solana-native storage startup. He designs low-level, cost-efficient blockchain primitives—at Code Inc. he built a Solana VM that cut transaction fees ~95% and slashed rent by ~80%—and now focuses on decentralized object storage at Spool Labs. His background spans enterprise migrations and large-scale backend systems for brands like Santander, BMO, Chipotle and Loblaws, plus early work enabling 3D content in browsers before WebGL matured. A practical open-source maintainer, he publishes Rust crates and Solana tooling (including a timelock program and confidential payments framework) and likes "making Solana do weird things." Based in Toronto, he blends hands-on systems engineering with product-minded leadership and a knack for squeezing dramatic efficiency gains out of blockchain primitives.
14 years of coding experience
14 years of employment as a software developer
Honors Bachelor of Science, Computer Science, Honors Bachelor of Science, Computer Science at University of Toronto
German, Croatian, English
Stackoverflow
3,016reputation
286kreached
21answers
13questions
Github Skills (192)
threejs10
javascriptcore10
cryptocurrency10
svg10
webgpu10
transpiler10
bundler10
3d10
cpp10
game-development10
sketch10
jsx10
javascript10
ledger10
imgui10
Programming languages (15)
Github contributions (5)
code-payments/code-sdk
Oct 2023 - Feb 2025
Permissionless micropayments for the web
Contributions:6 releases, 68 PRs, 138 pushes in 1 year 4 months
zfedoran/prefab.js
Sep 2013 - Oct 2014
Contributions:102 commits in 1 year 1 month
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