Mellow Sleep
Senior Shopify Developer
Skills
Job description
About Mellow
Mellow Sleep is one of the fastest growing consumer brands in the U.S., scaling from $0 to nine figures in revenue in under two years.
We are the #1 Home brand on TikTok Shop and are rapidly expanding across major retail and commerce channels, including Target, QVC, Walmart, Amazon, and wholesale.
As we continue to scale, we are looking for a Senior Shopify Developer to take technical ownership of our Shopify ecosystem and the integrations that power a high volume DTC and omnichannel operation.
The Role
You will be the technical owner of our Shopify Plus storefront and connected ecommerce systems. This is not a theme tweaks development role.
You will be responsible for architecting, building, and maintaining the infrastructure behind a $300M+ ecommerce brand operating simultaneously across DTC, TikTok Shop, Amazon, retail, and wholesale channels.
You will work closely with our growth, marketing, operations, product, and finance teams to ensure our commerce infrastructure is fast, reliable, scalable, and built to support continued aggressive growth. You will also mentor and review the work of junior Shopify developers on the team.
What You Will Own
Shopify Architecture and Development
Full ownership of Shopify Plus architecture, performance, and custom development
Custom Liquid, JavaScript, React, Node.js, and Hydrogen development as needed
Checkout optimization and conversion focused development
Site speed, Core Web Vitals, and overall storefront performance
QA, staging environments, testing, and deployment pipelines
Integrations and Commerce Infrastructure
TikTok Shop integration, including catalog sync, order routing, and inventory management
3PL integrations and fulfillment logic across multiple warehouses
Custom Shopify apps, APIs, webhooks, and middleware
Integrations with platforms such as AfterSell, Loox, Triple Whale, Klaviyo, and other core ecommerce tools
Data flows between Shopify, ERP, fulfillment, analytics, and reporting systems
Technical troubleshooting across the entire ecommerce stack
Omnichannel and International
Multi storefront management across the U.S., Canada, and future international markets
Multi currency and localization infrastructure
Support for DTC, TikTok Shop, Amazon, retail, and wholesale channels
Inventory and order routing logic across channels and fulfillment locations
Requirements
5+ years of Shopify / Shopify Plus development experience
Strong proficiency in Liquid, JavaScript, React, and Node.js
Deep knowledge of Shopify APIs, webhooks, and custom app development
Direct experience integrating TikTok Shop with Shopify, including catalog feeds, order synchronization, and inventory
Experience building and maintaining 3PL integrations such as ShipBob, ShipHero, Deliverr, or similar platforms
Experience working with high volume ecommerce stores, $10M+/year minimum, $100M+ strongly preferred
Familiarity with headless commerce and Shopify Hydrogen
Experience with multi currency, international, and multi storefront configurations
Strong understanding of ecommerce conversion optimization and site performance
Ability to diagnose and solve complex technical problems across interconnected systems
Ability to work cross functionally with growth, marketing, operations, product, and finance teams
Comfortable operating in a fast moving environment where speed and execution matter
Bonus Points
Experience with any of the following is a major plus:
Amazon MCF or multi channel fulfillment routing
Faire, wholesale portals, or Shopify B2B
ERP integrations such as NetSuite
TikTok Pixel, Meta CAPI, and server side tracking
Subscription and reorder infrastructure
Retail EDI integrations, particularly Target or Walmart
Complex inventory allocation and multi warehouse routing
High volume promotional events and traffic spikes
Benefits
Compensation: Competitive, based on experience
Employment: Full time
Location: Remote (India)
Working hours: Meaningful overlap with U.S. time zones required