Senior Shopify Full Stack Developer

Our client is a fast-growing DTC pet brand with hundreds of thousands of customers across North America, and scaling fast. They're building out their ecommerce engine and need a senior full-stack developer who can own the entire storefront architecture: from theme systems to CRO testing infrastructure, built for speed and scale.The leadership team is stacked with operators from some of the best DTC brands around, including Grüns, Mars Men, The Farmer's Dog, and RYZE. You'd be building alongside people who've scaled brands you already know.This is not a ticket-closing role. You'll own architecture to deployment end to end: the decisions, the trade-offs, and the results. The site is a revenue machine, and you're the one who makes it faster, more testable, and ready for whatever gets launched next.What You'll DoOwn the Shopify Plus storefront architecture end to end: theme, design system, and shared components built for reuse, not one-off buildsShip major features from design handoff to production: landing pages, bundle builders, subscription flows, new product launchesBuild the infrastructure that speeds up CRO testing: work directly with the Head of CRO to make experiments fast to launch, measure, and iterateOwn site performance and reliability: page speed, uptime, SEO readiness, and monitoring that catches issues before customers doBuild and maintain integrations between Shopify Plus and the surrounding stack: Klaviyo, analytics, order management, fulfillmentUse AI coding tools daily (Claude Code, Cursor, etc.) to ship faster and build workflows that let non-engineers do more themselvesPartner with growth, creative, and CRO to translate business priorities into technical milestones, and communicate trade-offs clearlyChampion engineering quality: automated testing, CI/CD, and documentation that doesn't slow the team downWhat We're Looking For7+ years of full-stack development experience, including 3+ years building on Shopify (Liquid, theme architecture, Shopify Plus)Deep command of React/Next.js, Node.js, GraphQL and REST APIs, and modern CI/CD pipelinesA track record owning front-end and back-end builds end to end, from architecture to deployment, not just contributing piecesExperience building reusable systems: shared themes, component libraries, developer toolingAI-native: coding assistants are a core part of how you ship, not an experimentComfort working with page builders and CRO tooling (Replo or similar) alongside custom codeHighly autonomous: you can take a Figma file and build it out without a fully spec'd user storyWho You're NotYou're a front-end-only or back-end-only developer: this role owns the whole stackYou need fully spec'd tickets and can't move without themYou treat AI tools as a novelty rather than a daily multiplierYou build one-off solutions instead of reusable infrastructureYou measure your work in tickets closed, not in site speed, test velocity, and revenueCompensation & Setup$150,000 – $200,000 USD base, based on experience, plus performance bonusRemote, US-basedFull-time role with real ownership as the ecommerce engine scales