Daniel Cukier
Core Developer at Polkadot
Oeiras, Lisbon, Portugal
Summary
👤
Senior🎓
Top SchoolDaniel Cukier is a core developer and technology leader with 16+ years building scalable, distributed systems and startups across fintech, marketplace and music analytics domains. He has served as CTO for high-growth Brazilian companies (Elo7, Pravaler) and co-founded Playax and WEB3DEV, blending product-led engineering with cloud migrations and event-driven architectures. Currently contributing to Jamixir and Polkadot, he’s implementing a JAM blockchain in Elixir while coding in Rust, Ruby, JavaScript and Java—showing rare cross-stack fluency from low-level systems to user-facing apps. A PhD researcher in software startups and a Google Developer Expert in Cloud, he combines academic rigor with hands-on startup velocity and venture advising experience. Beyond engineering, he’s an artist and published poet who applied early curiosity about computing (coding on a TK-3000 at age 10) to long-term systems thinking and team-building. Notably, his open-source work includes pragmatic i18n and UX improvements to community themes, reflecting an emphasis on developer ergonomics and global product reach.
16 years of coding experience
28 years of employment as a software developer
Polkadot Blockchain AcademyColegial, Colegial at Colégio BandeirantesPhD Computer Science, PhD Computer Science at USP - Universidade de São PauloPeretz
English, Italian, Spanish, Hebrew, Portuguese
Stackoverflow
11,772reputation
974kreached
46answers
135questions
development-environment
top-5%
Github Skills (19)
translation10
i18n-node10
internationalization10
rails10
html10
i18n-js10
i18next10
ruby-on-rails10
development-environment9
activerecord9
macos6
php-extension6
configurations6
php6
environment-variables6
Programming languages (19)
Github contributions (5)
gravityblast/web-app-theme
Dec 2009 - Dec 2009
A simple theme for web apps
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:10 commits in 1 day
Contributions summary:Daniel focused on internationalization (i18n) of the web app theme, updating view templates to incorporate translation keys and defaults. This included changes to show, new, edit, form, and list views to support translated content. Furthermore, they updated the table views and show views to include labels from the activerecord attributes for better user experience and localization support. The user also added an edit icon to the theme generator.
csssimple-themeweb-apps
w3b3d3v/nft-game-web3dev
Aug 2022 - Feb 2024
Contributions:2 reviews, 4 PRs, 3 pushes in 1 year 6 months
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