Ethan Cohen
Chief Technology Officer at Tono Health
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolEthan Cohen is a seasoned technology leader and CTO with 11 years of experience building and scaling product-focused engineering teams, currently leading platform and product engineering at Tono Health. Previously a Staff Software Engineer and tech lead for Twitter’s experimentation team, he brings deep expertise in experimentation infrastructure, data-driven feature rollout, and systems that support rapid product iteration. He pairs hands-on engineering with strategic leadership, moving from first-engineer responsibilities to shaping cross-functional delivery and technical roadmaps. An active open-source contributor, Ethan has improved accessibility in popular JSX tooling by implementing ARIA and keyboard interaction rules, reflecting a practical commitment to inclusive front-end design. Trained in mathematics and computer science at Emory University, he blends analytical rigor with product-minded execution to deliver reliable, user-focused systems.
11 years of coding experience
6 years of employment as a software developer
Bachelor of Science (BS) Mathematics and Computer Science, Bachelor of Science (BS) Mathematics and Computer Science at Emory University
English, Spanish
Github Skills (10)
accessibility10
ria10
acessibility10
javascript10
acc10
eslint10
wai-aria10
react10
accessibilityservice10
jsx10
Programming languages (5)
Github contributions (5)
jsx-eslint/eslint-plugin-jsx-a11y
Feb 2016 - Aug 2019
Static AST checker for a11y rules on JSX elements.
Role in this project:
Front-end Developer & Accessibility Specialist
Front-end Developer & Accessibility SpecialistContributions:53 releases, 176 commits, 239 PRs in 3 years 6 months
Contributions summary:Ethan primarily contributed to the improvement of accessibility within the React-based JSX project. Their commits demonstrate the implementation of rules related to ARIA attributes and roles, ensuring proper use and validation. The user focused on improving the project's adherence to accessibility best practices by addressing issues around alt text, tabIndex, and keyboard event handling. They also worked on refactoring and updating code to support the latest practices.
reacteslintcheckerelementsjavascript
beefancohen/react-proptype-conditional-require
Feb 2016 - Oct 2022
Contributions:5 releases, 34 commits, 10 PRs in 6 years 9 months
built-inreactproptypesrequire
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