
Closed
Posted
Here is the revised version focused on fixing the existing site and checkout: I need an experienced [login to view URL] developer to audit and fix bugs across an existing website, with priority given to the checkout process. The checkout is already built. This is not a new checkout build. The work involves identifying the root causes of current issues, fixing broken behavior, improving reliability, and making sure the full checkout flow works correctly on desktop and mobile. Scope of work: Review the existing [login to view URL] codebase Find and fix checkout bugs Test the complete cart and checkout flow Fix navigation, validation, state, pricing, and order submission issues Resolve responsive design problems Improve error handling and checkout recovery Check for client and server inconsistencies Fix security or data handling problems Avoid unnecessary rewrites or changes that could create new bugs Requirements: Strong [login to view URL] and Vue.js experience Experience debugging existing production applications Experience with carts and multi-step checkout systems Knowledge of API integrations and server-side validation Strong understanding of web security Ability to trace bugs to the root cause instead of applying temporary patches Experience with automated testing is preferred Please provide examples of similar [login to view URL] debugging or checkout work. Include how you diagnose production issues, how you test your fixes, your availability, and an estimated timeline after reviewing the codebase.
Project ID: 40611268
154 proposals
Remote project
Active 1 min ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
154 freelancers are bidding on average $53 USD/hour for this job

Hi — Elias here from Miami. I see you're looking to enhance your multi-page checkout process, which is crucial for improving conversions and user experience. The real challenge often lies in ensuring a seamless integration with payment gateways while maintaining security and handling user permissions effectively. A common issue in projects like this is managing state across multiple pages, which can complicate the user experience if not handled properly. To tackle this, I would focus on a modular architecture. This would allow for easy updates and maintenance while ensuring that each part of the checkout process operates reliably. I have successfully worked on similar e-commerce platforms, optimizing their checkout flows for both performance and security. A few questions to better understand the scope: Q1 – What payment gateways are you currently using or considering for integration? Q2 – Are there specific user roles that need to be addressed in the checkout process? Q3 – How do you envision handling errors or failed transactions during the checkout? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$50 USD in 10 days
8.5
8.5

Hello, I checked your "Multi-Page Checkout Integration" project and it looks like understanding the existing workflow will be important before making any changes. I've worked on similar PHP projects involving php, javascript, website design, web security, ecommerce, html, web development, payment gateway integration, frontend development and prefer delivering work in small milestones so everything stays easy to review and adjust if needed. If you can share a few more details about the current setup and expected outcome, I'll suggest the best approach and provide an accurate timeline. ⭐ 5.0/5 from a recent client: "Project was delivered before Time with Best professional Knowledge One could ever held. Thanks for the support" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$50 USD in 1 day
7.6
7.6

Hello!, I am a Florida-based senior software engineer(frontend, backend, ecommerce, etc) and I read your revised project description carefully. This sounds like a focused fix on an existing site and multi-page checkout flow, so I’d approach it with that exact attention to detail. I have about 15 years of experience with PHP, JavaScript, HTML, eCommerce, payment gateway integration, web security, and frontend development. I’ve fixed checkout issues, broken payment flows, and complex cart logic for production sites where reliability matters. I care about the details because checkout is the last place you want surprises. My approach: 1. Review the current checkout flow and locate the break point 2. Audit security, payment steps, and frontend/backend handoff 3. Fix it cleanly, test across devices/browsers, and verify the payment path end to end 4. Share a clear summary of what changed so you know it’s solid Could you please clarify the following questions to help me better understand the project? 1. Which platform/CMS is the site built on, and is the checkout custom or plugin-based? 2. What exactly is failing right now, and do you have a staging site or error logs I can review? 3. Which payment gateway(s) are involved, and are there any security requirements I should follow? If helpful, I can jump in quickly and get this stabilized without unnecessary back-and-forth. I’m the kind of person who actually reads the brief, finds the real issue, and fixes it properly. -James
$50 USD in 10 days
6.9
6.9

I have worked on production applications involving Vue.js, Node.js, API integrations, databases, Stripe, and ongoing maintenance of systems with existing bugs. Most of this work is under NDA, so I cannot share source code publicly, but I can explain the relevant architecture, debugging process, and outcomes during a call. My approach would be: * Reproduce and classify each checkout failure * Trace state, validation, pricing, API calls, and order submission * Fix the root cause with minimal code changes * Test desktop, mobile, retries, failed payments, and recovery paths * Add focused automated tests around the highest-risk scenarios I also use AI-assisted log analysis and test automation to reduce investigation time and cost, while manually reviewing every proposed fix. I am available up to 30 hours per week. I would use the first 1-2 business days for the audit, then provide a prioritized issue report and a reliable implementation timeline. Which checkout failures happen most often today? Do you have staging access, server logs, and error monitoring available?
$50 USD in 30 days
4.5
4.5

Vienna, United States
Member since Mar 11, 2013
$30-250 USD
$30-250 USD
$30-250 USD
$30-100 USD
$30-250 USD
$30-250 USD
₹1500-12500 INR
₹750-1250 INR / hour
₹12500-37500 INR
₹6000-8000 INR
₹12500-37500 INR
$30-250 USD
$10-30 USD
₹12500-37500 INR
₹1500-12500 INR
₹12500-37500 INR
₹750-1250 INR / hour
£20-250 GBP
$750-1500 USD
₹400-750 INR / hour
₹600-1000 INR
$30-250 USD
$10-30 USD
$175-350 USD
$30-250 USD