Senior Remote Shopify Full-Stack Engineer – Backend Lead

SLTWTR; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

SLTWTR Inc. is seeking a Senior Full Stack Engineer with a backend focus to build scalable Shopify apps and integrations. The role emphasizes API design, backend services, and heavy Shopify development while contributing to frontend as needed.

You will collaborate with product, design, and engineering teams to deliver robust eCommerce experiences, scale internal tools, and maintain reusable architectures in a remote, sprint-based environment.

Qualifications

• 5+ years of experience building full stack web apps in startups, agencies, or product teams.
• Expert backend proficiency with 3+ years in high-volume Shopify environments.
• Deep Shopify backend experience with custom Shopify apps, platform extensions (Checkout, Admin UI), and Functions.
• Strong backend skills with Node.js, serverless functions, or similar; TypeScript or Rust is a bonus.
• Experience architecting REST or GraphQL APIs and integrating with external systems.
• Shopify frontend competency including theme development (Liquid) and Storefront APIs; basic frontend JS and CSS.

Responsibilities

• Architect and implement end-to-end features with focus on system logic and API integration.
• Design and maintain Shopify apps, platform extensions, and Functions to support scalable business logic.
• Build reusable frontend components and backend services for modular client deployments.
• Leverage Shopify themes, Liquid, metafields, and APIs for complex client needs.
• Design and connect to REST/GraphQL APIs and third-party services with high reliability.

Skills

Node.js

Shopify backend

TypeScript

Rust

REST APIs

GraphQL APIs

Serverless functions

Shopify apps

Front-end basics

Agile delivery

Tools

Liquid

Hydrogen

Oxygen

Job description

SLTWTR Inc. is seeking a Senior Full Stack Engineer with a backend focus to build scalable Shopify apps and integrations. The role emphasizes API design, backend services, and heavy Shopify development while contributing to frontend as needed.

You will collaborate with product, design, and engineering teams to deliver robust eCommerce experiences, scale internal tools, and maintain reusable architectures in a remote, sprint-based environment.