Tulio Ornelas
Staff Engineer at Spotify
Stockholm, Sweden
Summary
🤩
Rockstar🎓
Top SchoolTulio Ornelas is a Staff Engineer at Spotify with 17 years of experience designing and shipping product-focused software across startups and large companies. Based in Stockholm and originally from Brazil, he blends full‑stack expertise—Flutter, Node.js, TypeScript, Java, GraphQL, Kafka, Ruby/Rails and modern front-end frameworks—with a track record of scaling customer-facing systems at Klarna and Globo.com. He is a pragmatic technical leader who moves quickly from prototyping to production, champions process improvement, and mentors teams to deliver reliable, user-centered products. Tulio contributes to open-source tooling for developer UX, notably improving a popular JSON Chrome extension’s theming and collapsible-node UI. His breadth spans databases and search (Elasticsearch, MongoDB, Redis) and real-time platforms, reflecting a curiosity for crossing boundaries between backend systems and polished front ends. Colleagues rely on him for fast learning, thoughtful trade-offs, and shipping delightful product experiences.
17 years of coding experience
14 years of employment as a software developer
Bachelor, Computer Science, Bachelor, Computer Science at Universidade Católica de Brasília
Portuguese, English
Github Skills (8)
google-chrome-extension10
javascript10
chrome-extension10
codemirror10
ui-design9
html9
css9
json9
Programming languages (8)
Github contributions (5)
tulios/json-viewer
Sep 2013 - Sep 2022
It is a Chrome extension for printing JSON and JSONP.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1 review, 143 commits, 40 PRs in 9 years 1 month
Contributions summary:Tulio primarily contributed to the front-end aspects of the Chrome extension, focusing on UI and user experience enhancements. Their commits reveal efforts to improve the options page and incorporate theming capabilities, including porting themes and implementing a selection mechanism. Additionally, the user added features like collapsible nodes and an option to render the original content.
printingjson-viewerjavascripthighlighterchrome
tulios/projetofinal-roteiros
Apr 2009 - Nov 2009
Contributions:318 commits in 7 months
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