Senior Full-Stack Engineer, Shopify & E-Commerce

What You'll Do

• —Build and maintain high-quality ecommerce experiences across Shopify and our custom infrastructure.
• —Work with Shopify APIs, product/variant data, cart behavior, checkout constraints, and webhooks.
• —Ship frontend experiences in React, Next.js, and occasionally Vue.
• —Build backend services, integrations, and internal tools.
• —Extend our Cloudflare Workers and reverse-proxy/split-testing infrastructure.
• —Support A/B testing and experimentation across the ecommerce funnel.
• —Improve subscription experiences — Recharge/customer portal flows, cancellations, product swaps, rebill logic, and retention features.
• —Implement and validate tracking across experiments, attribution, and analytics (Amplitude, Elevar, PostHog, server-side tracking, or similar).
• —Use AI coding tools as leverage — to move faster, explore approaches, debug, and check your own work.
• —Own pre-launch QA for high-impact launches: pricing tests, checkout changes, subscription changes, tracking updates.
• —Catch edge cases before customers or the business do, and monitor launches after release.
• —Communicate early and clearly — especially when something's risky, under-scoped, or likely to break.

What You Bring

Required

Production experience with Shopify — Admin API, Storefront API, webhooks, product/variant/cart/checkout logic.

Strong React and/or Next.js, plus TypeScript or strong modern JavaScript.

Node.js (or similar) backend experience and solid API design chops.

Comfort integrating third-party APIs, using Git/GitHub PR workflows, and owning production deployments.

A track record of debugging production issues and building software that's fast, reliable, and maintainable.

Sound judgment using AI dev tools — as an accelerant, not a substitute for engineering fundamentals.

Strongly Preferred

Recharge or a similar subscription platform (Skio, Stay.ai, Smartrr, Ordergroove, Loop, etc.).

Subscription flows: skips, delays, swaps, rebills, save offers.

Shopify Functions / Checkout Extensibility.

Cloudflare Workers, reverse proxies, or edge infrastructure.

A/B testing or experimentation systems.

Ecommerce analytics and tracking tools (Amplitude, Elevar, PostHog, server-side tracking).

Performance optimization for high-traffic ecommerce pages.

Building internal tools for ecommerce, ops, or catalog management.

Real, hands-on experience with AI-assisted coding workflows (Cursor, Claude Code, GitHub Copilot, ChatGPT, or similar).

What Success Looks Like

• —Ecommerce launches ship faster, with fewer post-launch fire drills.
• —High-impact Shopify, checkout, subscription, and tracking work needs less manual oversight from the CTO.
• —A/B tests, pricing changes, and checkout updates are implemented cleanly and measured correctly.
• —AI tools boost velocity without ever lowering the quality bar.
• —The rest of the engineering team levels up from working alongside you.

Who Thrives Here

• —You ship quickly without being sloppy, and you test your own work before handing it off.
• —You think in edge cases, not just happy paths — because you know ecommerce bugs cost real revenue.
• —You can take a business problem, not just a polished ticket, and run with it.
• —You push back — clearly and early — when something's risky or under-specified.
• —You debug deeply instead of guessing, and you leave every system better than you found it.
• —You care about conversion and customer experience as much as clean code.
• —You raise the bar for everyone around you.

How We Think About AI

We believe AI is a serious engineering advantage when it's used well. We want someone who uses it to explore approaches faster, write boilerplate, generate tests, debug, and review code — not someone who ships code because it appeared to work once.

You should be able to look at AI-generated code and know immediately whether it's wrong, insecure, unscalable, or under-tested. No vibe coding. Use AI aggressively — but keep your engineering judgment firmly in the driver's seat.

Logistics

Full-time, fully remote, EST working hours, US-based.

Strong written and verbal English communication.

Comfortable in a fast-moving startup environment where priorities shift fast.