Ian Greenough

Professional Summary

I'm a founding product engineer with 15+ years joining early-stage startups at technical inflection points to establish frontend architecture, testing infrastructure, and full-stack systems. I specialize in TypeScript/React at scale, with growing full-stack ownership through Node.js/Express/PostgreSQL and AI-augmented development workflows. I ship end-to-end features and AI-integrated products without sacrificing quality.

Selected Impact

Led multi-quarter frontend modernization efforts (TypeScript migrations, testing infrastructure) that materially reduced production incidents and unblocked faster feature delivery.
Established frontend quality and DX standards (testing, Storybook, CI) adopted across teams, improving onboarding speed and code maintainability.
Partnered closely with product and design to optimize critical user flows, directly contributing to significant revenue and conversion gains.

Professional Experience

Founded Döppelscript, an AI writing tool that learns a user's voice from their existing writing and generates LinkedIn-ready content in that voice, shipping a working MVP in three days on Next.js 15, Express/TypeScript, Postgres (Neon), Cloudflare R2, BullMQ workers, and the Anthropic Claude API.

TypeScriptNext.jsExpressPostgreSQL+1

Architected and maintained the Liminary app across 3 product surfaces (Chrome extension, web app, and injectable page overlays), authoring ~50% of the frontend codebase for an AI-powered research tool in a team of 4.

TypeScriptReactChrome ExtensionsAI/LLM

Led a complete JavaScript-to-TypeScript migration across the codebase, improving type safety, reducing runtime errors, and accelerating code reviews over a ~2.5-year tenure.

TypeScriptReactApollo GraphQLCI/CD

Joined as founding engineer when the platform served ~100 fitness studios and shipped 8+ major features (POS, checkout, scheduling, media pipelines) that helped grow the client base to 500+ within 16 months.

ReactTypeScriptStorybookNode.js

Drove a full Angular-to-React migration for a high-traffic DTC e-commerce platform, doubling developer velocity and unblocking the team to ship faster across multiple product lines.

ReactAngularReduxJavaScript

Built isomorphic React/Redux applications from the ground up for a major digital media company, delivering server-rendered, SEO-optimized experiences across a network of regional news properties.

ReactReduxJavaScriptNode.js

Built frontend applications for a healthcare analytics platform focused on cancer outcomes tracking, delivering data visualization and clinical workflow tools used by oncologists and research teams.

JavaScriptReactD3.jsNode.js

Contributed to the frontend engineering team at a high-growth fashion rental marketplace, building e-commerce features for a platform that would go on to IPO in 2021.

JavaScriptRuby on RailsHTMLCSS

Implemented universal localization framework in Ruby and ActionScript, allowing gaming titles to be deployed in multiple languages for European and Asian markets.

ActionScriptRubyAdobe AirJavaScript

Developed an in-house framework for the delivery of RIA content utilizing Flash, JavaScript, and HTML.

FlashJavaScriptHTMLActionScript

Skills

Core

TypeScriptJavaScriptReact.jsVue.jsNext.js App Router/Server ComponentsNode.jsExpress

AI/LLM

Multi-model AI development workflows (Claude Code, Cursor)OpenAI EmbeddingspgvectorPrompt EngineeringStreaming Completions

State & Data

Redux/Redux ToolkitZustandTanStack QueryApollo GraphQLPostgreSQLFirebase

Styling

CSSSCSS ModulesTailwind

Testing

MochaJestVitestCypressPlaywright

Tooling

ViteWebpackTurborepoRailwayCI/CDChrome ExtensionsExpo/React Native

Education

Web Design/Graphic Design

Sacramento City College

2006 – 2008Sacramento, CA