* Developed mobile web app to serve nonprofit mission of helping entrepreneurial engineers globally* Full-stack development using React, Remix, Tailwind, React Native, PostgreSQL, Typescript, Docker, Prisma, Kysely, Node, Python* AI driven front-end development including photo matching and NLP moderation system* WebAuthn based authentication system using Rust* Secure greenfield architecture on Azure* Interface with other external services, including storage and messaging APIs* Gave invited talks about designing front-end to take advantage of new capabilities including ML

Co-founder of one of the largest meetups for entrepreneurial engineers

* Introduced company to new major feature (FIDO2/WebAuthn)* Wrote scripts for and appeared in videos* Wrote blog posts* Developed React and Remix sample code* Participated in weekly marketing and sales meetings

* Led front-end engineering team for profitable pre-IPO fintech offering payoff loans and innovative consumer finance education* Shipped major platform refactor of six React + Node applications to AWS in Docker containers, including heavy involvement with internal and external devops teams* Cooperated with middle-tier (Clojure), backend (Salesforce Platform + numerous external APIs) and data science teams* Brought web properties into compliance with security and audit requirements* Proposed new stack based on React Native for mobile-first strategy* Architected features in TDDs after critiquing PRDs from product, and presented them inArchitecture Review Committee* Implemented new agile process including automated testing with Jest, Webdriver.io, Percy, and Saucelabs, CI/CD with Github and AWS Codebuild, sprint planning with Jira* Recruited and hired diverse 9 person all-remote team, expanding to 20 - 30 engineers in2021; helped fellow managers recruit and hire* Trained and integrated QA engineers into a “shift-left, shift-right” fullstack model* Cooperated with design and data science teams to help implement innovative consumerfinance application based on professor Elizabeth Dunn’s book Happy Money: the New Science of Smarter Spending

* Led React rewrite for media site serving 1bb+ pages/month* Proposed rewrite from Perl/Angular/jQuery to React + JSON* Enabled very significant new revenue stream (mobile web)* Taught React, MobX, Flow to 10-person dev team + new junior devs* Personally responsible for coding marketing and data tools* Proposed and led “dynamic styleguide” front-end testing system* Reduced webpack build size 10x and improved several measures of performance* Wrote Medium essays for recruiting* Hired and trained junior developers

* Assisted in re-architecture for leading fintech site* Advocated move from PHP to React* Provided data for outsourced search project with Algolia, code in Python* Wrote production PHP/MySQL code as needed

* Designed and led development of social bookmarking site serving 20mm uniques/month* PHP, MySQL, Dojo Toolkit, oAuth* SEO for growth* Gave talks on behalf of AWS

Ported Facebook mobile app to the Palm smartphone on WebOS, a custom dev environment PalmOS similar to JavaScript with HTML and CSS

* Led 12-person product team for casual social gaming company on the Facebook Connect platform* Architected 9 products for 36mm users, 80mm pageviews/month* PHP, MySQL, Dojo Toolkit, oAuth. Extensive use of Facebook, OpenSocial (MySpace), Google, Yahoo, Amazon, and Zazzle APIs* Personally built a pubsub chat system with realtime web, IM, email, and SMS endpoints* Ran first large AWS cluster for Facebook Platform apps, evangelized for AWS

First founder to be invited to pursue entrepreneurship under auspices of Silicon Valley nonprofit incubator.

Co-author of three editions of bestselling programming book, PHP and MySQL Bible. Translated into numerous languages.

* Led "shared nothing" rearchitecture and rewrite in PHP, custom social graph server, MySQL, XML, XSLT* Reduced average page latency by two orders of magnitude (~50s to 0.5s measured atload balancer) despite 4x user growth

* Wrote JavaScript clients for HTTP messaging publish-and-subscribe router* Open-sourced early version of server written in Python* Supported developer relations

* Built 3 versions of graph-based social shopping site* PHP, custom social graph server, custom NoSQL database, MySQL, Unix