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I need a seasoned Shopify app developer to build a private app that simplifies day-to-day store operations. My main objective is to streamline everything that happens after a customer clicks “buy”—from the moment an order is placed, through inventory adjustments, all the way to shipping and fulfillment updates. Here’s what I am looking for: • Order management: pull new orders in real time, surface status dashboards, and allow quick edits or bulk actions without leaving the app. • Inventory tracking: auto-adjust stock levels across multiple SKUs and locations, flag low stock, and push updates back to Shopify. • Shipping & fulfillment: integrate with my existing carriers, generate labels, and automatically write tracking numbers to the order timeline. The app must be built with the official Shopify App Bridge and Admin API, follow Shopify’s UI/UX guidelines, and be ready for Shopify App Store review (even if we keep it private at first). Code should be clean, documented, and version-controlled in Git. Acceptance criteria 1. Seamless install via OAuth and embedded experience inside my admin. 2. Real-time sync of orders, inventory, and shipment status with no data loss. 3. Admin settings page where I can map carriers, choose notification rules, and set inventory thresholds. 4. Complete hand-off: source code in a private repo, deployment instructions, and a short Loom walkthrough. Please outline your approach, estimated timeline, and any similar Shopify apps you have shipped. I’ll be available for rapid feedback so we can iterate quickly and get this live. This is actually a SaaS app we're building for shopify store admins to use as an ERP. 90% of the app is built, we just want someone to verify if the app is Shopify ready.
Project ID: 40692773
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Hi, I have developed and reviewed several practical Shopify apps focused on orders, inventory, fulfillment, and store operations. A typical example is Cin7 (➤[login to view URL]), which connects Shopify with inventory, order, and fulfillment workflows for store operations. ✅ Shopify Integration System: I have experience working with Shopify Admin API, App Bridge, OAuth, webhooks, embedded apps, orders, inventory, and fulfillment flows. I would audit the existing implementation and identify anything that could cause synchronization issues, API errors, or problems during Shopify review. ✅ ERP & Sync System: I have experience working with operational systems where orders, inventory, and fulfillment data must remain consistent across platforms. I would test your existing flows for edge cases such as duplicate webhooks, inventory conflicts, failed updates, rate limits, and missing events, then fix only what is necessary. That's why I think I am a good fit for this job. With most of the SaaS already complete, I can focus on a practical Shopify-readiness audit, testing, fixes, and final verification rather than wasting time rebuilding your existing work. Best regards, Michel.
₹15,000 INR in 5 days
1.8
1.8
44 freelancers are bidding on average ₹20,538 INR for this job

Your app will fail Shopify App Store review if the webhook handlers are not idempotent and the OAuth token refresh logic is missing. Shopify will reject apps that lose order data during network retries or leave merchants locked out after token expiration. Quick questions - are you handling webhook deduplication with event IDs stored in your database? And does your OAuth flow include offline access tokens with automatic refresh before the 24-hour expiry window? Here is the architectural approach: - SHOPIFY APP BRIDGE: Audit your embedded session token implementation against Shopify's latest App Bridge 3.x requirements and verify CORS headers are set correctly for admin iframe embedding. - WEBHOOK IDEMPOTENCY: Review your order/inventory webhook handlers to ensure duplicate events are filtered using Shopify's X-Shopify-Webhook-Id header and confirm retry logic does not corrupt stock counts. - OAUTH TOKEN LIFECYCLE: Test your offline access token storage and refresh mechanism to prevent session expiration lockouts that break real-time sync during high-volume order windows. I've launched 4 Shopify apps that passed App Store review on first submission, including a fulfillment SaaS handling 12K orders per day. Let's schedule a 30-minute code review call where I walk through your repo and flag any compliance gaps before you submit.
₹22,500 INR in 7 days
7.2
7.2

I can verify your Shopify app's readiness for the App Store review, ensuring it meets all necessary guidelines. My first step will be to review the existing functionality and confirm that it aligns with Shopify's UI/UX standards. Based in Toronto, I work efficiently and am always available for prompt communication during the project.
₹12,500 INR in 3 days
6.0
6.0

Your ERP is already 90% built, so the key challenge is not rebuilding features—it’s verifying that the existing Shopify app is technically ready for production and App Store review. I can audit the current implementation across OAuth, embedded App Bridge integration, Admin API usage, API scopes, order/inventory/fulfillment synchronization, webhooks, and data-loss edge cases. I’ll also review the admin UX against Shopify’s requirements and identify anything that could cause issues during App Store review. I’d approach this in a focused audit first, documenting issues by severity and then addressing the critical blockers before final validation. The codebase, Git workflow, deployment setup, and hand-off documentation can be reviewed as part of the process. For an initial audit, I’d estimate 2–3 days, depending on the current codebase and access provided. Could you share the existing app or repository for an initial readiness review?
₹12,500 INR in 7 days
5.0
5.0

My skills in JavaScript and Typescript assure a seamless install via OAuth, embedding your app inside the admin space, while adhering strictly to any specific Shopify UI/UX guidelines. I strongly believe in the power of automation and delivering scalable solutions, as evident from my track record working with MEVN/MERN/MEAN stack technologies. I will apply this belief to this project by incorporating functionalities such as order management, inventory tracking, and shipping & fulfillment that will efficiently streamline every post-purchase process. Moreover, my extensive experience in API integration (payment gateways- PayPal, Stripe; shipping services - Google Maps) guarantees smooth collaboration with your existing carriers and generate labels without any hitches. I promise not just the successful execution of this project but also complete hand-off transparency with source codes properly documented and securely stored on Git for future references. Allow me to lend my expertise in realizing your vision for perfect day-to-day store operations. Choose me for uncompromised proficiency and efficiency!
₹25,000 INR in 18 days
4.9
4.9

As a seasoned Shopify app developer, I have substantial experience in building apps that optimize and simplify day-to-day operations for Shopify store owners. In your case, I will leverage my expertise in API Development, App Development, JavaScript and Mobile App Development to ensure seamless synchrony of orders, inventory, and shipping stats with zero data loss. Using the official Shopify App Bridge and Admin API, I guarantee an embedded operation management experience that follows Shopify's UI/UX guidelines. One of my prominent skills is automation which aligns perfectly with your need to auto-adjust stock levels across different SKUs and locations and provide low stock alerts. With an eye for meaningful insights from analytics, I will also enable automated dashboarding for instant status visibility of orders. Furthermore, working on similar projects in the past has provided me an adept understanding of the supply chain intricacies in e-commerce. Having worked across diverse industries and international clients, I particularly can attest to the unravelled importance of a reliable technology partner like myself. My aim isn't just providing you with a functional Shopify Operations App but a cohesive solution that grows alongside your business. I'm excited about the possibility partnering up with you on this incredible project. Ready to diligently deploy clean, documented code to your private repo within agreed timelines!
₹12,500 INR in 5 days
5.0
5.0

As an experienced Full Stack Developer, I have successfully built and deployed numerous Shopify apps, making me extremely proficient in leveraging the Shopify App Bridge and Admin API to enhance store efficiency. I have hands-on experience building and testing ERPs similar to what you're describing, leaving no question that I am the perfect fit for your project. With my vast skill set in API Development, JavaScript, Mobile App Development, and more, every box in your project tour is already checked off. My understanding of your goal to streamline inventory tracking, order management and shipping/fulfillment aligns closely with my experience in building these exact functionalities for various platforms. I am here to drive a seamless experience for you and your customers—precisely the vision you painted in your project description. Expect a tested-and-tried app built with clean code, referencing version control on Git, ensuring an easy repository access after the completion of the project. Choose me for unparalleled professionalism that comes wrapped around with competent skillsets.
₹15,000 INR in 7 days
3.9
3.9

Hi, I’m Lokesh, a Full Stack Developer with 10+ years of experience. Since your Shopify ERP SaaS is already around 90% complete, I can focus specifically on verifying and preparing it for Shopify readiness rather than rebuilding what already works. I’ll audit the OAuth/install flow, App Bridge integration, Admin API usage, API scopes, webhooks, data sync, security, embedded app behavior, error handling and Shopify requirements, then fix any issues found. I’ll provide a detailed audit report, implement the required fixes, test the critical flows and prepare the application for Shopify App Store review.
₹20,000 INR in 7 days
3.2
3.2

Hi, At first glance, this looks straightforward but there’s usually one part that causes issues later. I’ve handled similar work before and can help you avoid that. Regards, Rajesh
₹12,500 INR in 7 days
2.8
2.8

Hello there, Since 90% of your Shopify ERP SaaS is already built, I can focus specifically on auditing what’s there rather than rebuilding anything. I’ll verify Shopify OAuth, App Bridge, Admin API usage, webhooks/realtime sync, permissions/scopes, embedded admin UX, data handling, and App Store review requirements. I’ll identify any blockers or Shopify policy/technical gaps, fix what’s needed, and provide a clear readiness report with deployment/review recommendations. I can start by reviewing the existing codebase and current Shopify app configuration, then give you a realistic timeline based on the audit. Looking forward for your positive response in the chatbox. Best Regards, Hunain M
₹25,000 INR in 2 days
2.9
2.9

I’ll audit your existing 90%-complete Shopify ERP against Shopify’s current app requirements, focusing on OAuth, embedded App Bridge, Admin API scopes, webhooks, session handling, and App Store readiness. I’ll test the complete order-to-fulfillment flow: real-time order sync, bulk actions, inventory adjustments across locations/SKUs, low-stock rules, carrier integrations, label generation, tracking updates, and failure/retry handling. I’ll review the codebase for Shopify API/version compatibility, webhook reliability, rate limits, pagination, idempotency, data-loss risks, security, permissions, and UI/UX guideline compliance. I’ll reproduce issues rather than simply reviewing code. For common ERP issues such as duplicate webhook events, inventory race conditions, expired OAuth sessions, and partial shipment failures, I’ll implement robust validation, retry/idempotency logic, and proper error handling. I’ll verify your settings, carrier mapping, notification rules, inventory thresholds, installation/uninstallation flow, and embedded admin experience, then provide a prioritized Shopify-readiness report with fixes. After validation, I’ll deliver the required fixes, documentation, Git handoff, deployment guidance, and a short walkthrough. I can also perform a final pre-submission audit to reduce App Store review issues.
₹25,000 INR in 7 days
2.7
2.7

Here! I’m a professional Full-Stack Web Developer specializing in both backend and frontend development with more than 700 successfully completed projects. I create fast, very modern, secure and powerful websites designed to deliver an outstanding user experience and help businesses grow. My technology stack includes HTML, CSS, Bootstrap, Flexbox, JavaScript, React, C#, ASP.NET Core, REST APIs and Microsoft SQL Server. Why should you choose me? ✅ More than 700+ completed projects ✅ Complete frontend and backend development ✅ Modern, attractive, and fully responsive design ✅ Clean, structured, and maintainable code ✅ Secure REST API and database integration ✅ Excellent performance across all devices ✅ Careful testing before final delivery ✅ Clear communication and regular progress updates ✅ Full dedication to your project ✅ Revisions until you are completely satisfied I can independently manage the complete development process from understanding your requirements and planning the solution to frontend development, backend implementation, database integration, testing, optimization, and final delivery. I’m ready to start immediately and transform your idea into a professional, high-performing and reliable solution. Let’s discuss your project and create something amazing together… Kind regards, Jure
₹15,000 INR in 2 days
2.3
2.3

Missing webhook retries can cause order data gaps when the app relies only on polling. I'll set up a hybrid listener using Shopify's Admin API webhooks plus a short‑interval poll to guarantee real‑time sync and immediate inventory updates. A common mistake is hard‑coding carrier IDs, which breaks when a store adds a new fulfillment service. I'll build a settings page that stores carrier mappings in a flexible table, so adding or changing carriers is just a UI tweak. You’ll see orders appear instantly, inventory stay accurate across locations, and tracking numbers write back without manual steps.
₹25,000 INR in 4 days
2.0
2.0

I understand 90% of your Shopify ERP SaaS is already built—the priority is auditing it against Shopify’s current requirements and making it fully Shopify-ready. I’ll verify the embedded admin experience, APIs, OAuth, sync, webhooks, permissions, UX and App Store compliance before launch. ( ͡❛ ᴗ ❛ ) No Upfront Fee | Free Live Demo Available | 100% Satisfaction Guaranteed | Fast Delivery | Best Price in the Market | 5+ Years of Experience in App Development | Trusted by 50+ Clients • Audit Shopify App Bridge, Admin API, GraphQL & OAuth implementation • Verify orders, inventory, locations, fulfillment & carrier workflows • Check webhooks, rate limits, retries, data consistency and security • Review billing, scopes, privacy, GDPR and Shopify App Store requirements • Test embedded UX against Shopify Polaris/design guidelines • Identify blockers, fix critical issues and provide a launch-readiness report • Clean Git handover + deployment/review checklist + walkthrough I can start with a focused technical audit of the existing codebase and give you a clear pass/fail roadmap before changing anything.
₹12,500 INR in 7 days
1.4
1.4

Your app likely requires a thorough review of its integration with the Shopify Admin API and ensuring compliance with their UI/UX guidelines. I can conduct this assessment efficiently to confirm its readiness for the Shopify App Store. With over 5 years of experience in developing Shopify apps, I’ve successfully delivered similar projects focused on enhancing order management and inventory tracking. I specialize in building seamless integrations using the App Bridge, ensuring a flawless embedded experience within admin dashboards. My approach involves a comprehensive evaluation of your existing codebase, followed by implementing any necessary adjustments for optimal performance. I can provide a detailed report of my findings, along with deployment instructions and user documentation. Looking forward to collaborating closely with you for rapid iterations. Let’s set a timeline based on your milestones to get this app Shopify-ready! Best Regards, M akif
₹15,000 INR in 3 days
1.1
1.1

Hi, Since around 90% of the Shopify ERP SaaS is already built, I’d focus on the part that matters most now: a thorough Shopify-readiness audit rather than rebuilding what’s already working. I can review the existing app for OAuth, App Bridge, Admin API usage, embedded admin experience, Shopify requirements, data sync, permissions, UI/UX compliance, and App Store readiness, then identify anything that could cause issues during review. I’ll provide clear fixes for any gaps and verify the app end-to-end before handoff. Happy to review the existing build and start with the readiness audit. Regards Ritesh
₹12,500 INR in 7 days
1.1
1.1

Hi, I’m an experienced Shopify app developer and can help verify and prepare your 90%-complete ERP SaaS for Shopify readiness. I’ll audit the App Bridge, Admin API, OAuth, webhooks, order/inventory sync, fulfillment, permissions, UX guidelines, and App Store requirements. I’ll identify and fix any gaps, test thoroughly, and provide a clean handoff. I can start immediately and work closely with you for rapid iteration. Best Regards, Robert
₹12,500 INR in 1 day
0.9
0.9

I am a Full Stack Developer with over 2 years of experience building SaaS applications, Shopify integrations, REST APIs, OAuth flows, and TypeScript applications. The biggest risk at this stage is passing Shopify review with hidden issues in an already built ERP. I can audit the existing implementation against Shopify requirements, focusing on OAuth, Admin API usage, webhooks, embedded App Bridge behavior, data synchronization, and review readiness. I would prioritize fixing compliance or reliability blockers rather than unnecessarily rewriting working code. Do you already have a Shopify development store and current app review checklist available? happy to discuss details in chat. Regards, Fizza Mushtaq
₹20,000.99 INR in 7 days
0.0
0.0

Hi, saw your post about your Shopify ERP app needing an App Store readiness review. The hard part is not building, it is the checklist: mandatory GDPR webhooks, embedded OAuth flow, App Bridge session tokens and Admin API scopes all have to match Shopify review rules exactly. Have you already created the app listing in your Partner Dashboard? I have taken apps through the Shopify review process before and know which rejection reasons come up most, missing webhook handlers and non embedded auth being the two big ones. Happy to start on a small milestone, an audit report against the checklist, so you can judge it first. Regards, Hassan
₹12,500 INR in 5 days
0.0
0.0

You want a fully embedded Shopify ops app that owns the post-purchase workflow end to end: orders, inventory, and fulfillment in one clean interface. Here's my approach: Node/Express backend with Shopify Admin API and webhooks for real-time order and inventory sync, React frontend using App Bridge 3 and Polaris components for a native admin feel, and a carrier integration layer using ShipStation or EasyPost depending on your existing setup. OAuth install flow built to pass App Store review from day one. Four-week timeline: week one covers OAuth, webhooks, and order dashboard; week two handles multi-location inventory tracking and threshold alerts; week three is carrier integration, label generation, and tracking writeback; week four is the admin settings page, testing, and handoff package including repo, deployment docs, and Loom walkthrough. I've built embedded Shopify apps following this exact stack, including real-time webhook pipelines and multi-location inventory logic, so there's no ramp-up cost here. Which carriers are you currently using, and do you have an existing ShipStation or EasyPost account?
₹17,894.78 INR in 7 days
0.0
0.0

Hello, I can build and optimize your Shopify Operations App Development with a fast, mobile-responsive checkout flow, clean product grid styling, and verified payment gateway configuration. My delivery approach: 1. Stage 1 (50% Milestone): Catalog setup, theme configuration in Shopify, and staging review within 2-3 business days. 2. Stage 2 (50% Milestone): Payment gateway integration, mobile checkout QA, and live production launch. Which specific payment processors (Stripe/PayPal) and third-party apps do you need configured? Best regards, Tumisang
₹12,500 INR in 4 days
0.0
0.0

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