# Jeffrey Ren: Full-Stack Engineer

> Jeffrey Ren is a full-stack engineer and co-founder of IMMACULATE, a Shopify development agency. Jeffrey builds beautiful, accessible ecommerce experiences, from Shopify storefronts to full-stack applications.

Website: https://jeffreyren.com/

## Introduction

Hi hi, I’m Jeffrey Ren, Full-Stack Engineer & Co-Founder at [IMMACULATE](https://immaculate.dev/).

I build beautiful, accessible experiences. From Shopify storefronts to full-stack applications. I care about how things work, and the people who use them.

## Selected work

### Buffalo Bills

A complete ecommerce storefront rebuild.

Collaborated with the design team to rebuild the Buffalo Bills ecommerce site, developing the storefront with Shopify, Liquid, HTML, CSS, and JavaScript.

- Stack: Shopify, Liquid, JavaScript
- Website: [shop.buffalobills.com](https://shop.buffalobills.com/)

### Soylent

Subscriptions, made easier to manage.

Built a subscription portal with the Recharge API so customers could manage subscriptions and orders. Created custom promotion scripts and reusable widgets across the site.

- Stack: Shopify, Recharge, Alpine.js
- Website: [soylent.com](https://soylent.com/)

### Hustle N’ Code

Helping the next generation learn to code.

Developed an online coding platform for young teenagers, working across the frontend and backend with Angular, Express, Node.js, and MongoDB.

- Stack: Angular, Express, Node.js
- Website: [hustlencode.io](https://hustlencode.io/)

### More projects

- [Ohio State University](https://gobuckeyes.com/): Shopify storefront
- [Madison Square Garden](https://shop.msg.com/): Shopify storefront
- [New York Knicks](https://shop.msg.com/pages/knicks): Shopify storefront
- [New York Rangers](https://shop.msg.com/pages/rangers): Shopify storefront
- [Original portfolio](https://jeffreyren.com/): Astro · TypeScript · Tailwind
- [Florence by Mills](https://www.florencebymills.com/): Shopify · Recharge · Rebuy
- [Wine Insiders](https://wineinsiders.com/): Shopify · Alpine.js · Recharge
- [Electriq](https://www.electriqmarketing.com/): HubSpot site rebrand

## Stack

- Shopify
- React
- TypeScript
- Next.js
- Tailwind CSS
- Node.js
- GraphQL
- Claude

## Experience

### Co-Founder, [IMMACULATE](https://immaculate.dev/) (2026 – Present)

Running a Shopify development agency focused on Shopify Plus storefronts, custom apps, migrations, and headless commerce. Working alongside brands and their teams to make commerce more accessible, performant, and useful.

### Web Development Consultant, Independent (2024 – 2025)

Collaborating with brands on accessible ecommerce experiences, from Shopify to headless storefronts.

### Frontend Ecommerce Developer, Legends Global Merchandise (2023 – 2024)

Rebuilding ecommerce sites for major sports brands with Shopify, React, and Next.js.

### Frontend Developer, Drinks (2021 – 2023)

Website optimization, accessibility audits, and custom subscription portals.

### Full-Stack Engineer, Urban TXT (2020 – 2021)

CRM features, internal Slack bots, and a mobile app teaching teenagers how to save and invest.

Full history: [LinkedIn](https://www.linkedin.com/in/ren-jeffrey/)

## A little about me

I squash bugs, add features, and build applications from the ground up. I especially enjoy making ecommerce feel intuitive and accessible.

When I’m away from my computer, you’ll find me at the gym, playing pickleball, or petting my cats.

> “A rising tide raises all ships.” A few words I keep coming back to.

## Say hello

Have a project in mind? I’d love to hear about it.

- Email: [renjeffreyy@gmail.com](mailto:renjeffreyy@gmail.com)
- GitHub: [https://github.com/renjeffreyy](https://github.com/renjeffreyy)
- LinkedIn: [https://www.linkedin.com/in/ren-jeffrey/](https://www.linkedin.com/in/ren-jeffrey/)