Ryan Casey
Senior frontend/fullstack engineer with 6+ years of experience. Specializes in React/TypeScript, shipping polished products at scale, and building tooling that engineering teams adopt.
Experience
- Shipped across six product surfaces on mailchimp.com — sign-up and activation, marketing campaigns, store and pricing, developer docs, brand content, and homepage personalization
- Architected mailchimp.com's first real-time personalization system — captured intent signals on first visit and immediately rendered personalized content client-side, loading only what each visitor actually sees; deployed to production with performance-aware delivery
- Led a 14-module homepage redesign — worked with product, design, and data partners to sequence overlapping A/B tests, instrumenting each module via GTM and GA4 so variant signals stayed isolated and results read out cleanly
- Led 3-engineer team that built an interactive product demo React module — guided users through creating a live email campaign from initial design to launch, driving $280K+ incremental annual booking revenue
- Owned features from technical design through instrumented experimentation and launch — scoped as stacked PR chains for independent review at each stage
- Identified workflow bottlenecks and shipped 15 AI-powered automation tools spanning Jira, GitHub, Slack, and Google Calendar — led a multi-PR initiative to abstract 5 as configurable, team-agnostic tools and ship them into Mailchimp's shared org-installer for cross-team adoption
- Mentored teammates on React patterns, accessibility, and PR sizing; ran sprint ceremonies covering planning, refinement, and capacity
- On-call rotation for mailchimp.com — triaged and responded to site-impacting incidents; contributed to weekly operational reviews covering performance metrics and uptime
Embedded consultant on Intuit Mailchimp's Dotcom team; hired FTE Nov 2022
- Rebuilt major portions of mailchimp.com and Mailchimp Presents using React, PHP, and Contentful
- Onboarding lead for new contractors and incoming Mailchimp FTEs
- Automated CMS workflows with custom Contentful tooling
- Built features on NCR's React/Node.js online ordering platform, used by major retail brands
- One of four engineers with merge approval; contributed architectural input on shared frontend components
Skills
Key Projects
Architected mailchimp.com's first real-time personalization system — captures intent signals on first visit and immediately renders personalized content client-side, loading only what each visitor actually sees with performance-aware delivery.
Led a 3-engineer team building a React module that guides users through creating a live email campaign end to end. $280K+ incremental annual booking revenue.
Identified workflow bottlenecks and shipped 15 AI-powered tools spanning Jira, GitHub, Slack, and Google Calendar; led a multi-PR initiative to abstract 5 as configurable, team-agnostic tools and ship them into Mailchimp's shared org-installer for cross-team adoption.