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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Full- Stack Engineer, Shopify & E-Commerce - **Company:** Javy Coffee Company - **Location:** United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), A/B Testing, Application Programming Interfaces (APIs), Artificial Intelligence, Cursor (Graphical User Interface Elements), Software Debugging, Programming Tools, Node.Js, Performance Tuning, Next.js, Shopify, Software Construction, Software Deployment, TypeScript, GitHub Copilot, ReactJS, Backend, Vue.js, Cloudflare, Front End Software Development, Api Design, Webhooks, GPT, Web Api - **Published:** August 12, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=1ae7ef5dd2be53b2 ## About the Role * 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., 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. ## Description This is a true full-stack role - spanning Shopify, custom frontend/backend systems, checkout and cart flows, subscriptions, experimentation infrastructure, tracking, and AI-assisted engineering workflows. It's built for someone who's already owned this kind of work as a Senior Full-Stack Engineer, Shopify/Ecommerce Engineer, or Lead Engineer at a DTC brand or agency, and wants to do it with more ownership and less red tape., * 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., * 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. ## Related Videos - [ Evaluating AI models for code comprehension](https://www.wearedevelopers.com/videos/1462-evaluating-ai-models-for-code-comprehension) - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Modern Headless Commerce with Vendure](https://www.wearedevelopers.com/videos/489-modern-headless-commerce-with-vendure) - [Streaming AI Responses in Real-Time with SSE in Next.js & NestJS](https://www.wearedevelopers.com/videos/1630-streaming-ai-responses-in-real-time-with-sse-in-next-js-nestjs) - [Coffee with Developers - Adam Wiggins](https://www.wearedevelopers.com/videos/919-coffee-with-developers-adam-wiggins) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [What is Software Engineering in the Age of AI?](https://www.wearedevelopers.com/magazine/640-what-is-software-engineering-in-the-age-of-ai) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)