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I need a developer to build a custom auction experience for a Shopify store. The required flow: 1. Customer clicks Bid on the product page. 2. No Shopify account or signup is required. 3. Customer verifies their phone number through WhatsApp OTP. 4. Once verified, they can place bids normally. 5. Customers receive WhatsApp notifications when they are outbid or win. 6. When the auction ends, the winner receives a unique secure link through WhatsApp. 7. The link opens the original product page at the final winning price. 8. Winner can Add to Cart, add other products if desired, then use normal Shopify checkout. The auction UI should be integrated into the Shopify theme and match the store design. A secure backend/server will be required for the auction integration, OTP, webhooks, notifications and winner flow. Shopify checkout must remain standard. The store is on Shopify Basic, not Plus.
Project ID: 40689350
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322 freelancers are bidding on average $1,919 USD for this job

Hi, hope you're doing well! This is a well-thought-out auction flow and I'd love to build it for you. Here's my approach: Custom auction UI embedded in your Shopify theme, matching your store design. WhatsApp OTP via Twilio or similar for phone verification before bidding. Secure backend to handle bids, outbid alerts, auction endings, and winner link generation. Winner receives a unique time-limited WhatsApp link that opens the product at the final price, leading into standard Shopify checkout. A few questions before we dive in: 1. Do you have an existing WhatsApp Business API provider, or will you need help setting one up? 2. How many products do you plan to run auctions on simultaneously, and how long do typical auctions last? 3. Do you have brand guidelines or a design reference so the auction UI blends seamlessly with your theme? Looking forward to making this work smoothly on Shopify Basic! Azeem Amin
$2,300 USD in 7 days
10.0
10.0

Hi — Elias here from Miami. I understand you're looking to create a custom auction experience for your Shopify store. The goal is to enhance user engagement while keeping the auction process seamless and intuitive. What usually matters most here is ensuring the auction system can handle real-time bids and transactions without lag. A common issue in systems like this is maintaining the integrity of the bidding process, particularly under high traffic. The tricky part is usually the integration with Shopify’s existing infrastructure and ensuring a smooth user experience across devices. My approach would involve building a robust backend with GraphQL for efficient data retrieval, ensuring the auction experience is both fast and reliable. I’d emphasize maintainability by structuring the code for future enhancements, allowing for easy updates and scalability. I've previously developed similar features for e-commerce platforms, optimizing user workflows and integrating payment gateways effectively. A few questions to better understand the scope: Q1 – What specific user roles do you envision for managing the auctions? Q2 – Are there any particular payment gateways you plan to use or integrate? Q3 – How do you foresee handling notifications for bid updates? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$2,500 USD in 10 days
8.6
8.6

The tricky part here is not the bid button itself, but making the auction flow secure on Shopify Basic without breaking standard checkout. I’d handle this by keeping Shopify for product/cart/checkout, while building the auction logic, WhatsApp OTP verification, bidding records, winner link generation, and notifications in a separate backend tied into the theme cleanly. I’ve worked on Shopify customizations where native Shopify limits meant the logic had to sit outside the store and still feel fully integrated on the frontend. That matters here because phone verification, auction timing, webhook handling, and final-price purchase flow all need to be reliable, not just visually stitched together. A clean matching UI can be done inside your theme as part of this. - Which WhatsApp provider do you want used for OTP and alerts: Twilio, Meta/360dialog, or are you open to recommendation? - Should bidding update live on the page, or is short-interval refresh acceptable? - Will this be for one auction product first, or should the backend support multiple simultaneous auctions from day one?
$1,500 USD in 7 days
8.6
8.6

Hi, I can build your custom Shopify auction experience with a seamless “Bid” flow directly on the product page, WhatsApp OTP verification without requiring a Shopify account, real-time bidding, and automated WhatsApp notifications for outbid and winning customers. I’ll develop a secure backend for auction logic, OTP verification, webhooks, notifications, and the winner flow, while keeping your Shopify Basic checkout completely standard. The auction UI will also be integrated into your theme and designed to match your existing store. Do you already have a preferred WhatsApp Business API provider, or would you like me to recommend the best option? Kindly send me a message to discuss more or directly award me. Thank you!
$2,500 USD in 15 days
8.2
8.2

Hello, As an adept developer who specializes in Shopify and has significant experience with JavaScript, I am confident that I can not only meet but exceed your expectations for this unique Shopify auction project. My vast skills extend from WordPress, Laravel, and PHP to even AngularJS and REST APIs, making me versatile enough to proficiently handle all aspects of this project. Over my 15+ years in the industry, I have honed my problem-solving abilities and learnt to write clean , scalable code while ensuring all my products are secure. One aspect that sets me apart is my capacity to integrate multiple functions and services into one cohesive unit. I can connect the WhatsApp OTP system for number verification, generate webhooks for notifications, set up backend-server flows for bids and winners in a secure way that preserves confidentiality of both client and bidder. With me on board, you can focus on scaling your business while feeling assured that the auction UI will be flawlessly integrated into your current design in a Shopify Basic format without requiring any subscriptions or sign ups. My powerful analytic capabilities paired with my commitment to timeliness make me an excellent candidate for taking on such an intricate project effectively. Thanks!
$1,600 USD in 12 days
7.8
7.8

With experience in custom Shopify development, I understand the need to create a seamless auction experience for your store without Shopify account requirements. My past work involves integrating secure backends and custom UI designs. How can we ensure seamless WhatsApp OTP verification while maintaining a user-friendly bidding process? Regards, Yogesh Kumar
$1,880 USD in 8 days
7.9
7.9

Hi, As a seasoned web developer, IT Flex Solutions India can expertly craft the unique, auction-focused Shopify experience you're looking for. With our 19+ years in the industry and a client portfolio featuring 483+ successful projects, you can be confident in the skill and vision we'll bring to your project. Our team has specialized expertise in APIs and API integration, ample experience required to ensure a smooth and secure functionality for crucial elements of your project such as WhatsApp OTP verification, webhooks for your notifications, and backend/server requirements. Additionally, our proficiency in JavaScript and TypeScript will allow us to create an auction UI that seamlessly blends with your Shopify theme while ensuring a stunning user experience. In conclusion, partnering with IT Flex Solutions means you're working with a dedicated team that always puts your business growth first. Choose us and let's transform your digital ideas into impactful solutions together. Thanks, SBM
$2,250 USD in 7 days
7.8
7.8

Shopify Basic can support this kind of auction flow, but only if the custom logic is designed outside checkout and connected carefully back into the product/cart journey. The important part is making verification, bid storage, outbid messaging, end-of-auction handling, and the winner purchase link all work securely while the buyer still finishes through the normal Shopify checkout. This is the sort of build where small mistakes create big issues later: duplicate bids, expired links, price mismatch at checkout, or unreliable notifications. We’ve handled Shopify custom work that required backend services, webhook coordination, and theme-level UI integration, so the result feels native to the store instead of patched together. I can also make sure the auction interface follows your store styling closely. - Do you already have a preferred app/server environment for hosting the auction backend, or should I propose one? - Should the winning link lock access for only the verified phone number/session, or just be time-limited and single-use? - Do you need an admin view to monitor bids and manually close or extend auctions if needed?
$1,500 USD in 7 days
7.5
7.5

Hi there, We understand you're looking to create a custom auction experience for your Shopify store, allowing customers to bid on products without requiring a Shopify account, and instead verifying their identity through WhatsApp OTP. Our team at Webbook Studio has experience with similar projects, such as building custom e-commerce solutions for clients, including a Shopify store for a fashion brand. We're skilled in JavaScript, TypeScript, and Shopify development, which would be essential for integrating the auction UI into your store's theme and creating a secure backend for auction management and notifications. We'll ensure the auction flow is seamless, from bidding to checkout, using standard Shopify checkout. One question: Have you considered how you'll handle auction timing and synchronization across different time zones, and would you like us to suggest a solution for this? Feel free to message us to discuss the details! — Webbook Studio
$1,600 USD in 30 days
7.6
7.6

Hello, Hope you are doing well, I’ll integrate the auction UI into your existing theme, build a secure backend for bids, OTP, webhooks and notifications, and connect the winning flow back to the original product at the final price while keeping Shopify checkout completely standard. With 10 years of Shopify development experience, I’ve built custom Shopify features, APIs, webhooks, third-party integrations, secure backend workflows, and complex e-commerce solutions. Let’s chat to discuss the auction rules and WhatsApp provider, and I’ll share relevant integration examples and suggest the best architecture for Shopify Basic. thank you Regards Gaurav Garg
$2,250 USD in 15 days
7.3
7.3

What you need is really a custom auction engine connected to Shopify, not a simple theme tweak. The safest approach is to keep checkout untouched, build the bid/OTP/notification/winner workflow in a secure backend, and then surface it inside the Shopify product page so customers get a smooth experience without account creation. That separation is important on Shopify Basic because checkout customizations are limited, while auction rules, verification, and final-price control need proper server-side handling. I’ve been involved in Shopify builds where custom pricing flows and external event logic had to sync correctly with products, carts, and notifications, which is exactly the kind of structure this project needs. If useful, I can also suggest the cleanest way to map auction states into Shopify without making catalog management messy. - Will the final winning price always override the regular product price for that buyer only? - Should users be able to place multiple bids from the same WhatsApp-verified number across different auctions? - Do you have a reference store/theme style you want the bidding interface to match?
$1,500 USD in 7 days
7.2
7.2

Hello I specialize in building custom Shopify functionality and can seamlessly integrate WhatsApp OTP verification and real-time bidding into your store. By leveraging the Shopify API and Twilio’s WhatsApp Business API, I will ensure a frictionless, secure auction flow without requiring account signups. My experience in creating high-converting checkout flows ensures your auction process will be both robust and user-friendly. Are you available to discuss how we can structure the real-time bid notifications to maximize engagement? Best regards, Giáp Văn Hưng
$1,500 USD in 7 days
6.8
6.8

I propose implementing a seamless auction experience on your Shopify store without compromising security or user experience. Key features include WhatsApp OTP verification for easy bidding, real-time bid notifications via WhatsApp, a custom auction UI matching your store's theme, a secure backend server handling auction logic and winner flow, and a direct checkout link for winners. I will optimize the solution within your Shopify Basic plan for compatibility and scalability. With my expertise, I'm committed to enhancing customer engagement and meeting your business objectives. Let's work together to make this project a success.
$2,700 USD in 5 days
6.9
6.9

Hi there, I can see the real challenge here isn’t just an auction UI , it’s making Shopify feel native while handling bids, WhatsApp OTP, outbid alerts, and a secure winner flow without touching standard checkout. I’ve built custom PHP/JavaScript and API-driven Shopify integrations before, and I’d approach this with a clean backend for bids, OTP verification, webhooks, WhatsApp notifications, and a theme-matched auction experience on Shopify Basic. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I’d like to understand how you want bid timing, reserve price, and winner link security handled so the flow stays reliable and safe. Should bids be live-updating in real time, or is a short polling refresh acceptable for the auction page? Thanks, Asad
$1,500 USD in 30 days
7.1
7.1

Hi there, I can create a custom auction system on your Shopify store that implements your required flow seamlessly. I’ll integrate phone verification using an OTP system through WhatsApp, ensuring clients don’t need to create accounts. Bidders will receive timely notifications for outbids and wins, and I’ll ensure the winner gets a unique link that leads back to the checkout process. The auction UI will be tailored to seamlessly match your existing Shopify theme and design. I have extensive experience with Shopify and custom app development, ensuring your backend is secure while keeping the checkout process standard. Let’s discuss how I can bring this project to life! Please see our portfolio on this link : https://www.freelancer.com/u/webperfection123 Best regards, Priyanka
$2,000 USD in 7 days
6.8
6.8

My plan is to keep Shopify responsible for the store, products, cart, and standard checkout, while building the auction system as a separate Laravel API backend. The Laravel backend would handle WhatsApp OTP verification, bids, auction timing, winner selection, notifications, secure winner links, and Shopify API/webhook communication. This is a better approach because the auction logic stays secure and fully controlled outside of the Shopify theme, while Shopify continues to handle what it does best, products, cart, and checkout. It also makes the system easier to maintain, scale, and extend later without interfering with the existing Shopify store. Do you already have an active Meta WhatsApp Business API account and a phone number configured for API messaging, or would you need me to set this up as part of the project? Also, regarding the final auction price: since the store is on Shopify Basic, I would like to clarify how you expect the winning price to be applied. Do you want the product/variant price to be updated automatically to the winning bid before checkout, or are you expecting another flow? Shopify Basic does not allow arbitrary checkout price overrides, so the winning-price flow needs to be implemented carefully and securely. Please look my profile and reviews. Thanks, Marko
$1,800 USD in 12 days
6.8
6.8

Hello, I read your requirements carefully and understand the complete Shopify auction flow: Bid button on the product page, WhatsApp OTP verification without Shopify signup, real-time bidding, outbid/winner notifications, secure winner links, final-price product access, and standard Shopify checkout on the Basic plan. I have 10+ years of experience in the required technologies and can develop the Shopify theme integration, secure backend, auction logic, WhatsApp OTP/notifications, webhooks, bid validation, winner flow, and checkout integration while keeping the existing store design intact. I will focus on security, reliable bid handling, webhook processing, and preventing unauthorized bidding or price manipulation. We will work with Agile methodology and test each stage before production deployment. I WILL PROVIDE 2 YEARS FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE, with assistance from zero to final publishing/deployment. I can start immediately and build the solution in clear, manageable stages. I eagerly await your positive response. Thanks
$1,500 USD in 7 days
6.6
6.6

I have experience with Shopify, Liquid, custom auction systems, secure backend APIs, WhatsApp integrations, OTP verification, webhooks, and real-time bidding workflows. I can build the complete auction flow directly into your existing Shopify theme, including phone verification via WhatsApp OTP, secure bid handling, outbid/winner notifications, auction closing, and unique winner links that open the original product at the final price. I’ll keep Shopify Basic compatibility in mind and ensure the final purchase continues through the standard Shopify cart and checkout without requiring Shopify Plus. I can start immediately and would be happy to discuss the auction logic, WhatsApp provider, and backend architecture.
$1,800 USD in 7 days
6.4
6.4

Hi there, I can create a custom auction experience for your Shopify store that allows customers to place bids without needing to sign up. The process will include WhatsApp OTP verification for phone number validation, ensuring a smooth bidding experience. Additionally, outbid notifications and a secure link to complete the purchase at the winning price will be integrated efficiently into the existing Shopify theme. Your project aligns well with my background in Shopify development and API integrations. Your satisfaction is paramount, and I guarantee that I will deliver a high-quality result. Regards, Ali
$1,500 USD in 14 days
6.4
6.4

Hello, I can build this custom Shopify auction experience with theme-integrated bidding, WhatsApp OTP verification, real-time bid handling, outbid and winner notifications, secure winner links, and a seamless return to the original product page at the final price. The implementation will preserve Shopify Basic compatibility and standard checkout while using a secure backend for auction logic, webhooks, and notification workflows. A valuable improvement would be adding auction timing safeguards and server-side bid validation to prevent race conditions, duplicate bids, and manipulated requests. I will also ensure the interface matches your existing store design and remains clear on mobile and desktop. The secure winner link can be designed with expiration and one-time validation to protect the checkout flow. Regards, Khursheed Ahmed
$1,500 USD in 12 days
6.6
6.6

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