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A small but annoying bug has crept into my checkout flow: when the gateway flags a transaction as failed, the user never sees the failure message and our admin panel shows no alert. Successful payments move through perfectly, so the logic is already in place—only the failed-transaction notification path is broken. I’ll give you access to the existing codebase plus a test merchant account so you can reproduce the problem. Your job is to trace the callback / webhook (or equivalent) that carries the “failed” status, correct whatever is swallowing or mis-routing that response, and confirm that users, admins, and logs all show the proper failure message after your fix. Deliverables • Patched code or clear pull request with comments • Evidence of a test run showing both a success and a failed payment, with the latter generating the correct notification • One-paragraph summary of what was changed and why The change is isolated, so I expect this to be a quick task for anyone who’s comfortable debugging payment integrations.
Project ID: 39740892
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Active 8 mos ago
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12 freelancers are bidding on average ₹303 INR/hour for this job

Hi shahids556, I'm writing regarding your project, "Fix Payment Failure Notifications." I understand that failed payment notifications are not reaching users or the admin panel, despite successful payments working fine – a truly annoying bug that needs a precise fix. My expertise in debugging payment gateway integrations and tracing callback/webhook flows makes me an ideal fit for this task. I'm comfortable diving into existing codebases to identify where responses are being swallowed or misrouted. My approach will involve systematically tracing the failed transaction status from the gateway, identifying the exact point of failure in your notification path, and implementing a clean, effective fix. I'll ensure both user and admin notifications, plus logs, correctly reflect failed payments, providing clear evidence of the solution. I'm confident I can quickly resolve this for you. Let's connect to discuss how I can help bring clarity back to your checkout flow. Sincerely, Navneet
₹100 INR in 7 days
7.5
7.5

Hi, We can help you quickly trace and fix the issue in your checkout flow where failed transactions aren’t triggering notifications. Since successful payments are already working, the problem likely lies in how the gateway’s failure callback/webhook is being handled or logged. Our Approach Review the current payment gateway integration and webhook/callback logic. Reproduce the bug using your provided test merchant account. Identify and patch the handler where the failed status response is being swallowed or misrouted. Ensure proper notifications are triggered for users, admins, and logs. Provide a clear pull request with comments, a one-paragraph summary of changes, and test evidence showing both success and failed cases working correctly. We have strong experience debugging and integrating payment systems (Stripe, PayPal, custom gateways), so we’re comfortable handling isolated issues like this with speed and precision. Our goal is to deliver a clean fix without disrupting your existing successful transaction flow. Looking forward to helping you resolve this quickly. Best regards, Priya
₹550 INR in 40 days
4.0
4.0

I can help quickly resolve the bug in your checkout flow where failed transactions don’t trigger user/admin notifications. With access to the codebase and test merchant account, I’ll: Trace the gateway callback/webhook for failed statuses. Fix the logic so failed payments surface the correct alerts to users, admins, and logs. Provide a patch/pull request with comments, plus evidence of test runs showing both successful and failed payments. Deliver a brief summary of changes made and why. Having debugged and integrated multiple payment gateways in WordPress, Shopify, and custom PHP apps, I’m confident this will be a quick, clean fix. Lets discuss in chat as i have few questions to ask.
₹240 INR in 40 days
2.9
2.9

As an established freelancer in Web and App Development, JavaScript and WordPress are my fortes which perfectly align with your project. My years of experience especially in payment integrations have brought me across various challenges with gateways and their callback systems. Being top 4% of Freelancers on this platform is a testimony for my competence to solve such problems swiftly and efficiently. I assure you meticulous tracking of the problematic callback/webhook responsible for the disappearance of failure messages. I will fix whatever confusion or misrouting that's causing the failed payment notifications to go astray. To ensure quality, I will present clear comments along with a patched code or pull request for your easy comprehension. To demonstrate the efficacy of my solution, I will provide an evidence-based work delivery showcasing both successful and failed payments, with the latter generating the required notification flawlessly. By hiring me, you are recruiting not just a technical expert but also a dedicated professional who aims to deliver nothing but excellence. Let's embark on this journey to enhance your checkout page and eliminate these irksome bugs for good!
₹250 INR in 40 days
2.6
2.6

i no java well i can deal it well and i can submit you in less time i can solve the bugs very fastly
₹350 INR in 30 days
0.0
0.0

? I am an Entry-Level Java Developer with hands-on experience in Java 8+, Spring Boot, Hibernate, MySQL, and Node.js. ? Skilled in debugging and bug-fixing across both frontend and backend, ensuring seamless performance and optimized solutions. ? Worked on RESTful APIs — from creation to testing and integration, applying best practices for real-world applications. ? Proficient in frontend technologies (HTML, CSS, JavaScript) to build responsive and user-friendly interfaces. ⚡ Passionate about problem-solving, writing clean, efficient, and maintainable code, and collaborating on end-to-end solutions. ✨ Strong foundation in API testing, database management, and performance optimization, with a focus on delivering quality results. ? If you’re looking for a dedicated developer who can bridge the gap between backend logic and frontend usability, I bring the right mix of technical expertise, adaptability, and eagerness to learn.
₹250 INR in 40 days
0.0
0.0

With over 16 years of experience in custom website development, where I have excelled at JavaScript, Payment Gateway Integration, and WordPress, even the most challenging of debug tasks hold no surprises for me. I understand the logic behind the failed-transaction notification system and know exactly where to look for errors that could be swallowing or misdirecting responses. Using your provided access to the codebase and test merchant account, I will methodically trace the callbacks until I find the exact point at which they are failing. Applying my focused attention to detail, I will correct this error and ensure that all users - from admins to customers - receive the proper notifications when a payment does not go through. After completion, expect a clear pull request with thorough comments detailing what was changed and why it was necessary. In addition to fixing this issue, I can provide advise on ways to optimize and improve your checkout flow while maintaining its functionality. With me on board, you're in safe hands that get+ your job done efficiently and effectively. (Networks further)
₹150 INR in 10 days
0.0
0.0

As an experienced software engineer with a strong background in diverse technologies including payment gateway integration, API integration, JavaScript and WordPress, I am well-equipped to tackle your project head-on. My extensive experience in backend development using PHP and Laravel will prove invaluable in tracing the callback or webhook causing the notification error in your checkout flow. Having worked on multiple projects involving similar e-commerce payment integrations, I have developed an understanding of the nuances associated with these systems. My meticulous approach to troubleshooting will ensure that we identify the root cause of the problem and create a targeted solution that resolves the issue without disrupting other functionalities. Furthermore, beyond just solving the technical glitch, my pledge is to enhance your platform's stability and efficiency. Not only will I fix the code responsible for swallowing or mis-routing the response of failed transactions, but I will also ensure that users, admins, and logs all show the proper failure messages post-fix. My proficiency in identifying potential bugs and delivering clean code through practices like pull requests can be relied upon to provide a comprehensive solution to your problem. Trust me with this task and you won't be disappointed.
₹550 INR in 40 days
0.0
0.0

I have good experience on debugging the payment related issues. I would like to understand the architecture and design of your system before I can fix the issue. I'm confident that i will do the right job for you. Looking forward to connect with you on this.
₹250 INR in 40 days
0.0
0.0

With my extensive experience in backend development and payment gateway integration, I am confident that I can fix the payment failure notification bug you are facing. I have previously worked with gateways like Stripe and have successfully tackled similar issues in the past. Additionally, I have a keen eye for detail which enables me to quickly identify any loopholes or bugs. One of my recent projects includes building Nyumbani, a rental management system that reduced the time spent on manual processes by half. This not only reflects my skills in developing efficient software but also my dedication towards delivering quality products within deadlines. Choosing to work with me would mean you get a problem solver who will break down your complex requirement into an optimized and scalable solution while maintaining clean and maintainable code. I assure you an open and productive communication channel throughout the process and a successful resolution to your problem. I look forward to being part of your team!
₹300 INR in 40 days
0.0
0.0

Pune, India
Member since Aug 28, 2025
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