NORTH JS TECH
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North Js Tech
App Development

Custom Shopify App Development

Bespoke Shopify apps that extend your store with powerful features — from custom workflows and third-party integrations to full storefront experiences.

What We Build

Full-spectrum Shopify app development for every business need.

01

Custom Storefront Apps

Theme app extensions and storefront experiences that integrate seamlessly into Online Store 2.0 with full merchant customization.

02

Admin & Backend Apps

Embedded admin apps with Polaris UI that streamline operations, automate tasks, and provide actionable dashboards.

03

Integration Middleware

Custom middleware connecting Shopify with your ERP, CRM, PIM, 3PL, and marketing platforms via robust API integrations.

04

Subscription Apps

Recurring billing and subscription management apps leveraging Shopify Subscriptions API for predictable revenue streams.

05

B2B Commerce Apps

Wholesale portals, custom pricing engines, and B2B order management tools built on Shopify Plus B2B features.

06

App Store Products

Production-ready public and custom apps designed for Shopify App Store distribution with full compliance and scalability.

How We Build Your App

A battle-tested process that delivers predictable results.

01

Discovery & Requirements

We map your business logic, audit existing workflows, and define the technical scope — ensuring every feature serves a measurable purpose.

02

Architecture & Design

System design, database modeling, API contracts, and UI wireframes reviewed collaboratively before a single line of code is written.

03

Agile Development

Two-week sprints with continuous demos, code reviews, and automated testing. You see real progress every iteration.

04

Launch & Iterate

Phased rollout with monitoring, error tracking, and performance baselines. Post-launch support ensures a smooth transition.

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App Development FAQs

Timelines vary based on complexity. A simple embedded admin app typically takes 4–6 weeks, while a full-featured public app with integrations can take 10–16 weeks. We provide detailed estimates after our discovery phase.

Both. We build public apps for the Shopify App Store as well as private/custom apps tailored exclusively to your store. Public apps go through Shopify's review process, which we handle end-to-end.

We primarily use Node.js/Remix with the Shopify CLI and Polaris for embedded apps. For headless storefronts, we use Hydrogen and Oxygen. Our stack also includes TypeScript, Prisma, PostgreSQL, and Redis for background jobs.

Absolutely. We've built integrations with ERPs (NetSuite, SAP), CRMs (HubSpot, Salesforce), shipping (ShipStation, EasyPost), marketing platforms (Klaviyo, Mailchimp), and many more.

Security is built into every layer. We follow Shopify's API security best practices, implement OAuth 2.0, encrypt sensitive data at rest and in transit, and conduct thorough security audits before launch.

Yes. Shopify's platform evolves regularly, and apps need to keep pace. We offer maintenance retainers that cover API version updates, bug fixes, performance monitoring, and feature enhancements.

We work on a fixed-price basis for well-defined projects and time-and-materials for ongoing development. Every engagement starts with a paid discovery phase that produces a detailed specification and accurate estimate.

Yes. We regularly help merchants and app developers migrate from legacy APIs to the latest versions, including transitioning to Checkout Extensibility, App Bridge 4.x, and the new Customer Account APIs.

Ready to build your custom Shopify app?

Tell us about your project and we'll map out the path from idea to production — no obligation.

Let's talk