Architect-Level Shopify App Build

@WebChapters

Hi, hope you're doing well! This is a well-scoped project and right in my wheelhouse. Here's my approach: TypeScript-first architecture with strict mode, clean Postgres schema, and migrations from day one. React widgets for filters, checkout, and account dashboard, built headless-ready for Hydrogen or any front-end layer. Shopify Plus compliance baked in, OAuth-secured API, and CI pipeline via Docker. ERP integration patterns designed upfront so NetSuite or Odoo hooks in cleanly later. I've used Claude Code in an agentic workflow to scaffold type-safe Shopify app boilerplate, auto-generate migration files, and run lint/test loops, cutting setup time significantly. Three questions before we dive deeper: 1. Do your existing Plus stores share a single design token file, or will I need to extract tokens store by store? 2. For the ERP side, is an integration already scoped or is that a future phase? 3. What's your target go-live date, and is there a sandbox Plus store ready for early installs? Looking forward to building something solid with you. Azeem Amin

@a4logic

Hello, As a veteran web architect with over a decade of experience, I believe I am the exact partner you need. My team and I have proven expertise in building high-performing applications, equipped with advanced functionalities, just like the project you've proposed. We follow a meticulous agentic workflow, which has delivered exceptional products like what you're envisioning here, such as complex filters on a huge catalog that loads swiftly - all in TypeScript and on a Node.js stack. In addition to this real-world experience of agile app development, my firm has dealt with numerous e-commerce platforms, including Shopify, and ready to meet your project needs flawlessly. Your requirement of extending the existing design system is not only something we understand deeply but also something we excel at delivering. Of course, we've experienced challenges similar to yours before: importing & integrating data into Shopify, securing APIs against leakage. Lastly, our attentiveness towards the client throughout the project along with excellent customer service makes us stand out from the crowd. We strive to add a "WOW" factor to every project we undertake; your satisfaction will always be our top priority. I’m confident that I can deliver all demanded deliverables within the required acceptance criteria. Trust us with your vision and let’s turn it into a "reality that will help you and your business reach new heights". Don’t let this opportunity slip away! Thanks!

@kamran2012

Good to see this project, I will deliver the Shopify app — advanced filters, custom checkout extension, and account dashboard — on a TypeScript/Node.js/Postgres stack with React widgets ready for both Online Store 2.0 and Hydrogen. For filter speed on large catalogs, I will use materialized views in Postgres with GIN indexes on product attributes, keeping queries well under your 250 ms target even beyond 1k SKUs. Questions: 1) Which ERP platform should the architecture prioritize first — NetSuite, Odoo, or SAP? 2) Do you have an existing design token file I should pull from? Ready to start whenever you are. Kamran

@webperfection123

Hi, I have extensive experience building custom Shopify apps, particularly with TypeScript on a Node.js + PostgreSQL stack. I can create a seamless checkout flow and robust user-account management tailored to your existing Shopify Plus stores. Additionally, my background includes ERP integrations like NetSuite and Odoo, ensuring the architecture remains flexible for future expansions. I can deliver all required components, including a GitHub repository with clean Type-safe code, secure back-end setup, and automated CI tests. Let’s discuss how we can align on your vision and technical requirements! Best Regards, Priyanka

@raheel2k29

Hello, This project aligns closely with the type of Shopify Plus architecture work I specialize in—high-performance custom apps, headless-ready systems, and scalable backend design with strict TypeScript discipline. I’ve reviewed your requirements carefully, especially the focus on performance (1k+ SKU filtering <250ms), Shopify compliance, and a modular architecture that supports both theme extensions and headless frameworks like Hydrogen. Why I’m a Strong Fit This is not just an app build—it’s a platform-level Shopify architecture problem involving performance engineering, Shopify ecosystem constraints, and scalable API design. My focus is building systems that stay fast and maintainable even as catalogs, traffic, and integrations grow. I also have experience using AI-assisted/agentic workflows (including Claude-style tooling) to accelerate scaffolding while keeping architecture clean, type-safe, and production-ready. The final deliverable will install cleanly on a Shopify Plus sandbox and meet all performance, security, and compliance requirements. Looking forward to collaborating on this. Best regards RAHEEL

@installerpoint

Hello, This is a solid green-field Shopify Plus architecture problem, not just a standard app build. I can help you design and implement a modular, TypeScript-first Shopify app that cleanly separates core commerce logic, storefront extensions, and headless-ready components. I’ll focus on building something that is scalable, compliant with Shopify constraints, and optimized for performance from day one. I’ve worked with AI-assisted TypeScript development workflows (Claude Code-style agentic generation), particularly for: Generating strongly typed service layers Refactoring API modules with lint/test constraints Maintaining CI pipelines with strict TypeScript + ESLint enforcement Incremental feature development with structured review checkpoints Deliverables Full TypeScript monorepo (GitHub) Node.js Shopify app backend (PostgreSQL schema + migrations) React storefront widgets: Product filters Account dashboard Checkout extensions Theme App Extensions (OS 2.0 compatible) Hydrogen-ready component library Dockerized deployment setup CI pipeline (lint + tests, ≥90% coverage target) Technical documentation + Loom walkthrough Acceptance Criteria Coverage I can start immediately with architecture design and repo scaffolding. Best regards, ADEEL

@managersingh

Hi, I will build your green-field Shopify Plus app using TypeScript, Node.js, and Postgres. I will use Claude Code to develop the fast filters ($<250\text{ ms}$), a branded checkout flow, user accounts, and a headless-ready React front-end that mirrors your existing storefront design. I'll also ensure the architecture supports future ERP integrations. I regularly use Claude Code via terminal for automated refactoring, generating migrations, and rapid test-driven development, which perfectly matches your workflow. Best regards, Singh

@godesignpk

Hello, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on JavaScript, Website Design, HTML, Node.js, Shopify, PostgreSQL, React.js, API Development Please come over chat and discuss your requirement in a detailed way. Thank You

@doomshellsl

Hello, Your vision for a scalable Shopify Plus app aligns perfectly with our expertise at Doomshell Software Pvt. Ltd. We specialize in architecting and developing enterprise-grade applications using Node.js, TypeScript, React, PostgreSQL, and modern DevOps practices. We can support you with: ✔ Custom Shopify app development from scratch ✔ Advanced product filtering optimized for large catalogs ✔ Shopify Plus checkout extensions and account management features ✔ React-based storefront widgets and merchant dashboards ✔ PostgreSQL schema design and secure API development ✔ Shopify Theme Extensions and Hydrogen-ready components ✔ ERP integrations with NetSuite, Odoo, SAP, and other systems ✔ Docker-based CI/CD pipelines, automated testing, and deployment Our approach: ✔ Design a scalable, future-ready architecture ✔ Build secure, type-safe, and maintainable solutions ✔ Ensure Shopify compliance, performance, and extensibility ✔ Deliver complete documentation, source code, and knowledge transfer A couple of quick questions: Do you already have architecture specifications, or would you like us to propose the complete system design? Are ERP integrations part of the initial release or planned for later phases? Regards,

@ambientinfotech

Hi Sir, I can efficiently handle all the tasks mentioned in the job summary with high-quality features and functionality. I am a self-motivated and experienced Odoo developer and tech partner, focused on delivering reliable solutions and complete customer satisfaction. I assure you of 100% quality work and timely delivery. Let’s connect to discuss further. Thanks,

@Hammadhassan21

Hey, i will build a clean and professional multi page Shopify app (Node.js + React + Postgres) for your Shopify Plus ecosystem that is focused on improving their online presence, building trust, and helping them get more clients and bookings I will work directly on the required platform/account to design and develop a scalable Shopify custom app with advanced product filters, Shopify checkout extensions, and secure user account management features. I will implement a TypeScript-based architecture using Node.js backend, PostgreSQL schema with migrations, React storefront/admin widgets, and Shopify theme extensions compatible with Online Store 2.0 and headless setups. i am interested to doing this work and i am agree with your budget Do you already have a preferred design style or any reference websites you want me to follow for your project? portfolio: https://www.freelancer.com/u/Hammadhassan21 Best Regards: Hammad Hassan

@vashishtrupinder

Hello, I am a full-stack developer with 7+ years of experience working with Shopify, React, Node.js, PostgreSQL, TypeScript, API integrations, and custom application development. I have also worked with AI-assisted development workflows and complex third-party integrations. Your project sounds very interesting, and I would like to learn more about it. A few quick questions: * Do you already have the Shopify Plus stores and design system in place? * Will the advanced filters be powered by Shopify Search & Discovery or a custom indexing solution? * Do you already have ERP integration requirements defined, or is that part of the architecture phase? * Will the checkout customization be built entirely with Shopify Checkout Extensions? * Do you have a preferred hosting environment for the Node.js/PostgreSQL stack? I am available to start immediately and would be happy to discuss the architecture in more detail. Best regards,

@WebTechDesignBG

Hello, I’m excited about the opportunity to partner with you on your Shopify app project. It sounds like you’re looking for a robust solution that includes advanced product filters, a fully branded checkout flow, and solid user-account management. With 7+ years of experience in building applications using Node.js, TypeScript, and React, I can help design and implement the custom functionalities you need while ensuring top-notch performance and compliance with Shopify standards. I’ve worked with Claude Code before, generating clean, type-safe code that integrates well with existing systems. I understand the importance of seamless integration with ERP systems like NetSuite and Odoo, and I’m ready to ensure your app can accommodate those complex needs. Considering your focus on user experience, how do you envision the balance between functionality and maintaining a consistent brand feel throughout the app? Best regards, Ivan Mandinski

@seefattechnologi

Hello-------------I got your scope of work and am ready to deliver a production-grade Shopify Plus app with high-quality architecture, blazing-fast product filters, branded checkout extensions, and secure account management. Using TypeScript, Node.js, PostgreSQL, React, and agentic workflows, I can build Hydrogen-ready components with CI/CD, Docker deployment, and scalable ERP integration support. I’ll ensure strict TypeScript standards, secure OAuth flows, excellent performance, and a seamless experience across Shopify Plus storefronts. Thanks!!

@Rekhathakur

Hi, Your project is exactly the kind of green-field Shopify Plus build I enjoy designing scalable architecture first, then delivering clean, maintainable code that supports long-term growth. I have extensive experience with Shopify Plus, TypeScript, Node.js, React, PostgreSQL, Docker, CI/CD, Shopify Functions, Checkout Extensions, Theme App Extensions, and ERP integrations. I've also worked with AI-assisted development workflows, including Claude-style agentic coding, to accelerate delivery while maintaining code quality, type safety, and test coverage. For this project, I would architect the app around a modular service layer, ensuring the filtering engine, checkout extensions, account management, and future ERP integrations remain decoupled and scalable. For large catalogs, I'd use optimized indexing and caching strategies to keep filter response times well below your performance targets. Relevant Experience * Shopify Plus custom apps and checkout extensions * Online Store 2.0 and Hydrogen-compatible architectures * React storefront widgets and merchant dashboards * OAuth, API security, and role-based access control * NetSuite, Odoo, and third-party ERP integrations * Dockerized deployments and GitHub CI/CD pipelines Estimated Timeline Architecture & setup: 1 week Core functionality: 4–6 weeks Testing, optimization & deployment: 1–2 weeks Best regards.

@kuldeepak05

Hi! ~ I have worked on Shopify systems involving custom app logic, API integrations, and scalable storefront components, with a focus on performance and maintainable architecture. I am comfortable operating at the intersection of Shopify extensibility + backend systems + frontend React layers. I will work with you as an architect-level partner to design and ship a scalable, headless-ready Shopify app: ~ Advanced Filtering Engine. ~ Checkout & Account Extensions. ~ Core Architecture. ~ Theme + Headless Compatibility. ~ ERP-Ready Integration Layer. ~ Dev Workflow (Claude Code / Agentic). How I Would Approach This (Initial Phase): ~ Define core domain models. ~ Design API contracts + data flow. ~ Scaffold monorepo structure. ~ Implement filtering engine first. ~ Layer in checkout/account extensions within Shopify constraints. ~ Establish CI/CD + Docker pipeline early. If you can share your current Plus store setup and any existing design tokens/components, I will propose a concrete system architecture (data model + API + extension strategy) so we can move straight into build. Regards.

@stelianrosca618

Hi, Green-field Shopify Plus app, TypeScript/Node.js/Postgres, React storefront widgets, theme extensions that work both in OS2.0 and headless Hydrogen, ERP integration hooks, and an agentic workflow with Claude Code — I've worked across all of this and this is the kind of architecture decision I enjoy getting right from the start. On the Claude Code front — I use it regularly for scaffolding, type-safe boilerplate, and generating test coverage. It significantly accelerates the repetitive parts of a TypeScript/React codebase without losing architectural control. The key is keeping the agentic output inside strict review gates so nothing ships that hasn't been understood and validated. For the Shopify side — custom app with OAuth, checkout extensions that pass compliance, theme extension components designed to be consumed by both Online Store 2.0 and a Hydrogen build is exactly what the architecture needs to nail up front. The filter performance requirement (sub-250ms on 1k SKUs) is achievable with the right PostgreSQL indexing strategy and proper caching. On ERP integrations I've connected Shopify event streams to Odoo and similar platforms. NetSuite has its own quirks but the pattern is familiar. What does the existing design system look like and which Plus stores are we targeting first? Stelian

@marjanahmed13

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.

@durgesh8527

With over 12 years of global experience, our team of tech experts is well-equipped to tackle your Shopify app project. Our skills in API development, JavaScript, Node.js, PostgreSQL, React.js, and Shopify align excellently with your project requirements. We have a solid record of delivering enterprise-grade software and eCommerce solutions that are scalable, secure, and user-friendly - all qualities you're looking for. Adhering to your description's every detail from using the agentic tool Claude Code to creating source code in TypeScript on a Node.js + Postgres stack and a React front-end is second nature to us. Furthermore, we've successfully connected Shopify events to ERP platforms like NetSuite and fulfilled ozone coverage- important aspects for your project as well. When collaborating with us, quality is assured. Not only will we create a high-performing app with advanced features like the product filters but also mirror it closely to the existing aesthetics of your Shopify Plus stores. Moreover, our package includes maintaining thorough documentation and assuring optimal performance through updates and bug fixes while offering you top of the line support throughout the project. With us on board success is guaranteed!