David Newell
Co-Founder And CTO at End Close
London, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolDavid Newell is a founder and hands-on CTO with 11 years of product and engineering experience building software for education, healthcare and space, now leading End Close—an AI-powered reconciliation startup for high-volume payments. He combines startup leadership (YC-backed Unflow) with product engineering chops from PostHog, Intercom and Basecamp, and frequently ships front-end improvements that make complex UXs replayable, evidenced by contributions to the popular rrweb project. Comfortable moving between strategy and code, he has a track record of shipping integrations, modernizing test suites, and rebuilding replay and CSS parsing logic to preserve real user interactions. Based in London, he brings both operator grit and open-source discipline to early-stage companies, and often focuses on tooling that preserves fidelity of user sessions for debugging and analytics.
11 years of coding experience
9 years of employment as a software developer
S19, S19 at Y CombinatorBachelor of Engineering (BEng) Electronic and Computer Engineering, Bachelor of Engineering (BEng) Electronic and Computer Engineering at University of GalwayLeaving Certificate, Leaving Certificate at Coláiste na Coiribe
English, Irish, French
Stackoverflow
3reputation
2kreached
1answer
2questions
Github Skills (14)
css10
postcss10
javascript10
typescript-types9
testing9
vitest9
typescript9
typescripts9
heroku6
devise6
trix6
actiontext6
ruby6
ruby-on-rails6
Programming languages (12)
Github contributions (5)
rrweb-io/rrweb
Jan 2024 - Nov 2024
record and replay the web
Role in this project:
Front-end Developer
Front-end DeveloperContributions:15 reviews, 7 PRs, 27 comments in 11 months
Contributions summary:David primarily contributed to the rrweb project, focusing on improvements to the snapshot and replay functionality of web sessions. Their work included enhancing the CSS parsing capabilities with the addition of a new PostCSS parser and associated testing, and also implemented fixes for selector parsing. They also worked on adapting the CSS for replay to handle pseudo-classes like `:hover`, ensuring proper re-creation of the original user interactions. Furthermore, they updated and refactored the type definitions used in the project.
reactreplayfullstoryrecord-and-replayrecord
daibhin/Mentorship
Feb 2016 - Dec 2018
Contributions:2 PRs, 4 pushes, 3 branches in 2 years 10 months
ruby-on-railsrails-apprailsrubymeet
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