Senior Full Stack Developer

Role Overview

• Keep the current headless site stable and improving (next ~3–4 months)
• Own day-to-day stability: triage issues, fix bugs, ship improvements, and keep releases moving
• Improve performance and reliability across funnel pages (Collection → PDP → Cart → Checkout)
• Support business-critical updates (launches, promos, pricing changes) without breaking conversion
• Execute a mix of quick wins and targeted refactors to reduce fragility and regressions
• Maintain analytics and tracking integrity so marketing, attribution, and testing don’t get corrupted
• Operate with a clear constraint: we’re not looking for a big rewrite right now—we’re migrating, so we need pragmatic improvements that keep the business running
• Provide technical input during the agency rebuild (collaborative, not meeting-heavy)
• Instead, you’ll provide focused technical partnership to keep the rebuild accurate, maintainable, and launch-ready:
• Provide technical guidance early (constraints, feasibility, integration requirements, edge cases)
• Review key deliverables that benefit from engineering eyes (technical specs, implementation approach, critical PRs)
• Join the working sessions where engineering input is genuinely needed (not every status meeting)
• Answer agency questions quickly and clearly so they don’t guess—or build the wrong thing
• Post-migration: Shopify theme execution + experimentation
• Work within Shopify theme constraints intelligently (speed, maintainability, extensibility)
• Build and iterate on features that support an ever-evolving ecommerce business
• Enable experimentation: implement tests, iterate quickly, and ship improvements that move conversion and AOV
• Maintain and extend apps/integrations cleanly (no duct-taping the stack)
• Build lightweight documentation and internal runbooks so we can own what we ship
• Frontend Development
• Build and maintain React/Next.js experiences across the ecommerce funnel
• Improve UX in ways that directly impact conversion, AOV, and subscription attach
• Ensure performance and accessibility standards are met (Core Web Vitals matter)
• Backend / Platform Development
• Build and maintain APIs, serverless functions, and integration logic (TypeScript-heavy)
• Debug issues across services: Shopify, internal tools, and third-party partners
• Improve observability: logging, monitoring, error reporting, and alerting where needed
• API Integration & Ecommerce Tooling
• Integrate Shinesty systems with third-party tools (subscription, search, analytics, marketing partners)
• Ensure reliable data flow and maintainable implementation patterns
• Performance + Conversion Rate Optimization
• Identify and resolve bottlenecks across frontend and backend systems
• Implement smart, well-scoped A/B tests and iterate based on results
• Partner with the Digital Product Manager to translate hypotheses into shippable changes**

Requirements

• 5+ years professional JavaScript experience (TypeScript strongly preferred)
• 3+ years React and/or Next.js experience
• Strong experience building/consuming REST APIs (GraphQL a plus)
• Ecommerce experience (Shopify strongly preferred)
• Strong debugging skills across frontend + backend
• Excellent written and spoken English communication
• Comfortable working in ambiguity and moving fast without perfect specs**

Nice to Have

• Shopify theme development experience (Liquid, theme architecture, Shopify best practices)
• Serverless experience (AWS Lambda or equivalent)
• Analytics and tracking implementation experience (GA4/GTM, Meta Pixel, TikTok Pixel, event taxonomy discipline)
• Experience partnering with agencies (PR review, launch readiness, acceptance criteria)
• Experience with AI coding tools (Claude Code, Cursor, Windsurf) used responsibly

Tech Stack

• AWS
• GraphQL
• JavaScript
• Next.js
• React
• TypeScript

Benefits

• Competitive USD pay (based on experience)
• Flexible PTO (no accrual required)
• Flexible hours focused on results
• All necessary tools and resources provided**