Bug Fixing for Payment Gateway & Subscription Module

@AbhishekSingh08

As a seasoned and versatile professional with extensive experience in API Integration, ASP.NET, C# Programming, Full Stack Development, Google App Engine, MySQL and Software Architecture, I bring a lot to the table for your Payment Gateway and Subscription Module bug fixing project. Let me start by highlighting my ability to solve complex problems – an invaluable skill when dealing with critical issues like failing payments and update inconsistencies. Working on a subscription-based SaaS app with recurring billing being one of its most vital aspects makes me well-versed in this domain. I have successfully combated problems related to webhook handling, API authentication, recurring billing errors, timezone mismatches, and invoice generation in the past. Moreover, after incisive analysis, I rebuilt the subscription logic delicately using a refined C# service layer and instituted auditing logs to ensure every billing event is traceable and transparent. On top of these fixes, my approach interweaves optimization and system maintenance because the perfect solution is not only about fixing bugs but also about avoiding them in the future. I have optimized MySQL tables strategically and added automated cleanup scripts for system longevity. So why choose me? My battle-tested skills in C#, MySQL optimization, automated systems are honed preciously tailor-fitting into the requirements you've elucidated. Looking forward to working with you!

@semme1989

With over 10 years of experience in web and app development, and with a focus on ASP.NET and C# programming, I offer a unique expertise that aligns perfectly with your needs. Having worked on numerous projects rectifying complex functional issues including API authentication failures, subscription logic bugs, and timezone mismatches, I am confident that I can swiftly tackle the payment gateway and subscription module bugs in your SaaS application. Throughout my career, I have never encountered a problem I couldn't solve. My understanding of software architecture combined with meticulous quality checking and testing provides you with an assurance of the highest standard outcome. Additionally, my proficiency in MySQL and experience in database optimization will help me not only fix the existing errors but also ensure long-term system health through auto-cleanup scripts. Furthermore, I offer comprehensive support both during and after the project's completion. Equipped with excellent communication skills, quick turnaround time in support maintenance, as well as a deep commitment to client satisfaction. That's why I am prepared to give you 10+ hours every day until we resolve all outstanding issues. It's clear - if you want an accomplished professional who values your time and understands the critical nature of these tasks, then you won't find anyone better for this project than me.

@anilptk

Hello hutchipriyanka, I am excited about the opportunity to work on your project involving fixing multiple critical issues in a subscription-based SaaS app. I have extensive experience in resolving webhook handling bugs, API authentication issues, recurring billing errors, timezone mismatches, and inconsistent invoice generation. I specialize in rebuilding subscription logic, implementing retry queues, creating audit logs, optimizing MySQL tables, and adding auto-cleanup scripts for system maintenance. I look forward to discussing how I can help enhance the performance and reliability of your application. Regards, anilptk

@Ussama91

I can fix critical issues in subscription-based SaaS apps, resolving payment failures, webhook handling bugs, API authentication issues, and billing errors, I optimize database tables, implement retry queues, and create audit logs, with skills in C#, Python, and MySQL, I adapt to the proposed budget. Waiting for your response in chat! Best Regards.

@Rahulsingh5xz

Hello, I’m Rahul Singh, leading Team Velora, with 3+ years of experience fixing and stabilising subscription-based SaaS platforms. We clearly understand issues around failed payments, webhook bugs, recurring billing logic, and data inconsistencies. Our team specialises in rebuilding clean service layers, adding auditability, and ensuring billing systems run reliably at scale. Let’s connect in the chat box to review the current issues and access.

@amjad2

Hi there! I’ve reviewed your project and specialize in fixing issues in subscription-based SaaS applications. I can resolve your webhook handling bugs, API authentication problems, and billing errors efficiently. Let’s have a quick meeting to discuss the details. Best Regards, Amjad Iqbal

@toxicpuru

Hi, I can help diagnose and fix the payment gateway and subscription issues end to end, with a focus on correctness, auditability, and long-term stability. I have hands-on experience resolving failed payments, broken webhooks, subscription state mismatches, recurring billing errors, timezone inconsistencies, and invoice generation problems in SaaS platforms. My approach is to first review the existing payment flow and subscription lifecycle, reproduce the reported failures, and identify root causes across API calls, webhook listeners, background jobs, and database state. From there, I will refactor or harden the logic where required, add proper retries and idempotency, and ensure every billing event is logged and traceable. I also review database schema and indexes to avoid sync issues and performance bottlenecks. Before proceeding, I’d like to confirm a few details so the fixes align perfectly: • Which payment gateway is currently in use (Stripe, Razorpay, PayPal, or something else)? • Are subscriptions handled fully in-app or partially via the gateway dashboard? • Any existing audit or webhook logs available? Once clarified, I can proceed with clean, well-documented fixes and thorough testing. Best regards, Purushottam

@shashankmis808

Hello, I have worked on subscription-based SaaS systems where billing and account updates needed stabilization. Recently, I addressed issues related to webhook handling, recurring billing logic, timezone alignment, and invoice consistency. My work included refactoring subscription logic into a clear C# service layer, adding retry handling and billing audit logs, and optimizing MySQL tables with basic maintenance scripts. I focus on understanding existing systems and making careful, maintainable improvements. Regards, Shashank Mishra Software Developer | C# | .NET | MySQL

@reliabletechie

Hi, I can help resolve the payment gateway and subscription module bugs effectively. I’ve successfully fixed webhook errors, recurring billing issues, and API authentication problems in SaaS platforms, ensuring stable payment flows and accurate account updates. I can quickly identify and address the root causes of failed transactions, optimize database performance, and enhance the reliability of your subscription logic. My focus will be on delivering a robust, well-documented solution that keeps your billing system secure and consistent. Thank you, Shamir

@mutahrar

I can fix your SaaS subscription issues by rebuilding the payment and webhook logic in C#, ensuring recurring billing, invoice consistency,

@arifjaved88

I have reviewed your project and would be happy to assist. I am a Full-Stack Web Developer with experience in PHP, Laravel, Java, and Flutter, delivering scalable, clean, and efficient solutions. I focus on writing well-structured code, meeting deadlines, and maintaining clear communication throughout the project. Whether it’s backend development, frontend integration, mobile applications, or system improvements, I ensure quality and reliability in every task. I am committed to understanding your requirements and providing results that align with your goals. Regular updates, professional collaboration, and on-time delivery are guaranteed. I look forward to discussing your project details and getting started. Best regards, Arqam Mughal

@steveng96

Merry Chrismas! I can debug and fix this issue today. I have experience with code debugging and troubleshooting. Ready to start immediately.

@prhuzaifa

As an adept full-stack developer, I am highly experienced in resolving payment gateway and subscription-related bugs far more complex than what your project entails. Rebuilding the subscription logic in a clean C# service layer and implementing robust retry queues are just two examples of how I have creatively solved similar issues in the past that would greatly lend to fixing the problems within your SaaS app. Your mention of timezone mismatches rings a bell, as I resolved a challenge similar to this in a high-traffic e-commerce store. With my firm grasp on MySQL, I optimized table structures and developed reliable auto-cleanup scripts to ensure a sustained system health in the face of scaling usage patterns; an experience that has finely honed my skills for your project's needs. Furthermore, I understand the gravity of transaction failures and their impact on user experience and revenue generation. By effectively utilizing my problem-solving prowess,technological know-how, and passion for delivering customer-centric solutions, trust that your bugged payment gateway and inconsistent invoice generation will be seamlessly rectified, reducing churn, giving you peace of mind while maximizing profitability. Let us partner in making payments swift transactions on your platform!

@karthik950

I resolved critical payment and subscription issues by redesigning the billing system around secure, webhook-verified payments. I implemented a clean service layer for subscription logic, added retry handling and audit logs to prevent data loss, fixed timezone and recurring billing errors, and optimized the database for performance and stability. This ensured reliable payments, accurate subscriptions, and a scalable long-term solution.

@abhijeett13

Hello, I have strong experience in maintaining and stabilizing subscription-based SaaS applications, especially around payment flows and recurring billing systems. I can confidently handle all the issues you mentioned, including: Fixing payment failures and ensuring proper account updates Resolving webhook handling issues and API authentication problems Correcting recurring billing logic, timezone mismatches, and invoice inconsistencies Rebuilding the subscription flow using a clean, maintainable C# service layer Implementing retry queues and detailed audit logs for every billing event Optimizing MySQL tables and adding automated cleanup scripts to keep the system stable and performant I focus on root-cause analysis, not temporary fixes, and ensure the system remains reliable under real-world load. My approach emphasizes clean architecture, proper logging, and long-term maintainability. I’m ready to start immediately and can deliver a stable, well-documented solution. Looking forward to working with you. Best regards, Abhijeet

@karthikC2000

OM NAMA SHIVAYAM, I specialize in stabilizing and fixing broken subscription-based SaaS systems, especially where payments succeed but user accounts don’t update correctly or billing data becomes inconsistent. In a recent project, I resolved multiple critical production issues in a live SaaS application where revenue and access control were at risk. What I’ve Successfully Delivered Fixed payment failures and missing subscription updates Corrected webhook handling issues causing lost or duplicated events Resolved API authentication problems with the payment gateway Fixed recurring billing logic and edge cases Eliminated timezone mismatches affecting renewals and expiries Rebuilt invoice generation to be consistent and reliable

@QuickMentor

Bug Fixing for Payment Gateway & Subscription Module I’m an experienced Full Stack Developer skilled in JavaScript (React, Node.js, Angular), Python (Django, Flask), PHP (Laravel, WordPress), and mobile frameworks like Flutter. I build high-performing, scalable, and fully responsive web and mobile applications tailored to your business needs. I ensure clean, efficient code and timely delivery. To kick things off, I also offer a free initial consultation to fully understand your project requirements. Let’s discuss your project today and start building a solution that exceeds your expectations!

@LukeKenyon

I am confident I can deliver exactly what you’re looking for by following your specifications closely and without assumptions. Your requirement to “rebuild the subscription logic in a clean C# service layer” demands precision and accuracy to ensure billing correctness and reliable webhook handling. My approach focuses on careful execution, clear scope alignment, and delivering exactly what’s defined—no assumptions and no shortcuts. I prioritize reliability, thoroughly handle edge cases like API authentication and timezone mismatches, and ensure system integrity through audit logs and database optimizations. Although I am new to Freelancer, I bring strong real-world experience and have completed many projects off this platform. I’d be happy to discuss the details whenever you’re ready. Regards, Luke Kenyon

@LahoriSolutions

Two Benefits with us. Lower Cost – We deliver high-quality work at a reduced cost thanks to our efficient operations. Social Good – Our team includes individuals with disabilities and low-wage-earning women, whom we support by offering wages above industry norms. Your project directly contributes to their empowerment and financial independence.