Lex Alexander
Los Angeles, California, United States
Summary
👤
Senior🎓
Top SchoolLex Alexander is a Senior Software Engineer with 11+ years building full-stack systems across fintech, ticketing, social media, NSFW platforms, and crypto, now leading payments and messaging work at Taskrabbit. He combines hands-on front-end polish and API design with backend resiliency—having rescued companies from million-dollar losses, built features that recovered $1.5M in delinquent payments, and reduced video delivery costs by 75%. Comfortable bootstrapping servers and re-architecting payment flows for hundreds of thousands of users, he also shipped SEO and recommendation features that drove millions in GTV and thousands of user referrals. An active open-source contributor, he’s improved UX in projects like Atom by refining tooltip behavior and event handling. He mentors students, competes in hackathons, and runs a personal portfolio at builtbylex.com, blending pragmatic engineering with product-minded impact.
11 years of coding experience
5 years of employment as a software developer
John Muir High School
Github Skills (12)
datatip10
editors10
qtip10
javascript10
tooltips10
electron10
editor10
tooltip10
jestjs9
testing9
jes9
jtest9
Programming languages (11)
Github contributions (5)
atom/atom
Jul 2018 - Aug 2018
:atom: The hackable text editor
Role in this project:
Front-end Developer
Front-end DeveloperContributions:6 commits, 2 PRs, 6 comments in 1 month
Contributions summary:Lex primarily focused on improving the user experience of the Atom editor by addressing issues related to tooltips. Their work involved modifying tooltip behavior, specifically to hide them on keyboard events and clicks outside the tooltip area. Key changes included adding and removing event listeners for clicks and keydowns, along with adjustments to the tooltip-related code in both the source files and the testing specifications. They also refactored code to improve clarity and fixed a few linting errors.
electronwindowsjavascriptlinuxhackable
cacheflow/react-use-is-online
Mar 2020 - Jun 2022
A React hook for detecting if you are online or offline.
Contributions:17 commits, 10 PRs, 26 pushes in 2 years 4 months
reactreact-hooksdetectingreactjshooks
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