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⚠️ IMPORTANT: Only apply if you have built a real project using React, Supabase AND Mollie together. Not separately. If you have not used all three in the same project, please do not apply. --- **About us:** We run a subscription-based e-commerce business with a React frontend, Supabase backend, and Mollie as our payment provider. --- **Immediate task:** Audit our Supabase backend and subscription system — verify that all subscriptions are correctly saved, charged, and secure. Identify any issues and provide a clear written report. **Upcoming project:** Website rebranding within the next few weeks. We need someone who can build a professional, high-quality e-commerce frontend in React. --- **Requirements — all are mandatory:** ✅ Real hands-on experience with React, Supabase AND Mollie together in the same project ✅ Experience with subscription and recurring billing systems (webhooks, mandates, failed payments) ✅ All code saved on GitHub at all times — no exceptions ✅ Solo developer — we need one dedicated person, not a rotating team ✅ Available 7 days a week including weekends for urgent issues (response within 1-2 hours) ✅ Good English communication skills ✅ Comfortable with video calls for onboarding --- **When applying, please answer these points specifically:** 1. Which project did you use React, Supabase and Mollie together? Describe what you built. 2. How did you handle failed payments and mandate management in that project? 3. Are you a solo developer and available 7 days a week including weekends? Generic applications will not receive a reply. We only move forward with candidates who answer all three points specifically. We are looking for a long-term partner — not a one-time freelancer.
Project ID: 40507120
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230 freelancers are bidding on average $149 USD for this job

Hello, As an experienced software developer with a strong focus in web applications, I am confident that I am well-suited to take on your e-commerce subscription project. I have developed several similar projects using the exact tech stack you require (React, Supabase, and Mollie) - including one where I incorporated a recurring billing system that handled failed payments and mandates management effectively. All my code is meticulously tracked and saved on GitHub, so you can be assured of my dedication to accountability. I understand the importance of having a dedicated developer for your project and rest assured, I work solo. My commitment to being available 7 days a week, including weekends, further highlights my reliability. I am fluent in English which ensures smooth communication - crucial for providing precise updates and addressing any concerns promptly. Lastly, I don't see this as a just "a one-time gig" but rather a long-term collaboration. By choosing me, not only will you get someone who meets all your requirements, but also a freelancer who is genuinely interested in partnering with you to help scale your e-commerce business effectively and efficiently in the future. Thank you for considering me for the job! Thanks!
$180 USD in 3 days
8.6
8.6

Hi, Answering your three points directly: 1. I built a subscription-based platform using React for the frontend, Supabase for auth and database, and Mollie for recurring billing. The system handled plan selection, mandate creation, and automated charge cycles end to end. 2. Failed payments were managed through Mollie webhooks. On a failed charge the system flagged the subscription in Supabase, triggered a retry sequence, and notified the user with a re-authorization flow. Mandates were stored and validated before every billing cycle. 3. Yes, solo developer, available 5 days a week including weekends with a 1 to 2 hour response time for urgent issues. I am ready to start with the Supabase audit immediately and deliver a clear written report covering subscription records, charge accuracy, webhook reliability, and any security gaps. Long term commitment is exactly what I am looking for as well. Can we schedule a quick video call this week to go over the audit scope? Best regards, Hafiz Anas
$178 USD in 2 days
8.6
8.6

Hello, I can help audit your React, Supabase, and Mollie subscription system to verify that subscriptions, recurring payments, webhooks, and customer records are functioning correctly and securely. The goal will be to identify any risks, inconsistencies, or billing issues and provide a clear action plan for improvement. What I will handle: • Full audit of subscription workflows and recurring billing logic • Review of Mollie webhooks, mandates, failed payment handling, and renewal processes • Verification of Supabase database structure, security policies, and subscription records • Testing of payment flows and subscription status synchronization • Detailed written report with findings and recommendations • GitHub-based workflow and documentation throughout the project I am available for long-term collaboration, including the upcoming React-based rebranding project, ongoing maintenance, feature development, and subscription system improvements. Best regards. Smile Mittal
$100 USD in 3 days
8.1
8.1

***** React + Supabase + Mollie Subscription System Audit & Long-Term Development Support ***** Hello, I checked the requirements and understand that your immediate priority is a comprehensive audit of the React + Supabase + Mollie subscription workflow to ensure subscriptions, recurring billing, webhooks, mandates, payment states, and database synchronization are functioning securely and reliably. Features: * Subscription Lifecycle Verification * Failed Payment Flow Analysis * Mandate Management Review * Database Integrity & Data Consistency Checks * Supabase Security & RLS Audit * Authentication & Authorization Review * API & Edge Function Inspection * Payment Reconciliation Validation * Subscription Status Synchronization Many More As Per Your Need.... Let's Connect over call/chat for detail discussion and system review. Thanks,
$140 USD in 7 days
8.3
8.3

Hi, As a dedicated and experienced web developer, I understand the importance of finding the right person who not only meets all your technical requirements but also aligns with your long-term vision. I have not just worked with React, Supabase, and Mollie individually, but I also have hands-on experience integrating all three in one project- an e-commerce platform much like yours. I employed these technologies to create a robust subscription system that securely saved, charged, and managed mandates of our customers, including addressing failed payment scenarios. All the code for this project - as well as my other projects - is saved on GitHub, and I've consistently demonstrated my ability to work both swiftly and independently. One of my key strengths as a freelance developer is that I am not just part of a rotating team; it's just me. This means your project will always receive my utmost focus and attention, without any distractions. I am committed to going above and beyond for my clients and ensuring their satisfaction at every step. This includes being readily available for communication or urgent issues -even on weekends - because time is money, especially in e-commerce. Thanks....
$250 USD in 7 days
8.1
8.1

Hello, Your subscription-based eCommerce project aligns well with our expertise at Doomshell Software Pvt Ltd in building and optimizing full-stack web applications using modern technologies. We can assist you with a complete audit of your existing system built on React, Supabase, and Mollie, ensuring that all subscription flows, payment processing, and backend logic are secure, stable, and working correctly. We can support you with: ✔ Supabase backend audit and subscription verification ✔ Review of payment flows (Mollie integration, webhooks, recurring billing) ✔ Identification and fixing of security or logic issues ✔ React frontend optimization and improvements ✔ Subscription lifecycle handling (failed payments, renewals, mandates) ✔ Database structure review and performance tuning ✔ GitHub-based clean development workflow Our approach: ✔ Deep analysis of your existing architecture ✔ Identification of critical issues in subscriptions and payments ✔ Clear technical reporting with fixes and recommendations ✔ Implementation of improvements with clean, maintainable code ✔ Ensuring system stability and scalability We focus on building reliable, production-grade subscription systems with strong payment handling and backend integrity. A couple of quick questions: Do you already have webhook handling implemented for failed payments? Should we focus first on audit and fixes or also start planning the React rebrand immediately? Regards.
$240 USD in 7 days
7.9
7.9

⭐⭐⭐⭐⭐ Expert in React, Supabase, and Mollie for E-commerce Solutions ❇️ Hi My Friend, I hope you're doing well. I reviewed your project requirements and see you're looking for a reliable developer to audit your Supabase backend and subscription system. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for e-commerce solutions. I will ensure all subscriptions are secure, correctly saved, and charged, providing a clear written report on any issues found. ➡️ Why Me? I can easily handle your project as I have 5 years of experience in React, Supabase, and Mollie. My expertise includes subscription systems, webhooks, and payment management. Additionally, I have a strong grip on GitHub for code management and am dedicated to providing efficient solutions. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I look forward to connecting with you! ➡️ Skills & Experience: ✅ React Development ✅ Supabase Integration ✅ Mollie Payment System ✅ Subscription Management ✅ Webhooks Handling ✅ Error Reporting ✅ Code Auditing ✅ GitHub Management ✅ Frontend Development ✅ E-commerce Solutions ✅ Communication Skills ✅ Problem Solving Waiting for your response! Best Regards, Zohaib
$150 USD in 2 days
7.9
7.9

Greetings, I see that you’re looking for someone to audit your Supabase backend and subscription system, ensuring everything is working smoothly and securely. I have hands-on experience building an e-commerce platform using React, Supabase, and Mollie together. In that project, I developed a subscription service where I implemented features for managing failed payments and mandates effectively, ensuring users were informed and charges were retried appropriately. As a solo developer, I’m available seven days a week, ready to address any urgent issues within a couple of hours. I communicate well in English and am comfortable with video calls for onboarding. I understand the importance of maintaining code on GitHub for transparency and collaboration. I’m excited about the possibility of partnering with you for both the audit and upcoming rebranding project. Best regards, Saba Ehsan
$150 USD in 4 days
7.4
7.4

Hello, I've built a real project using React, Supabase, and Mollie together, where I developed a subscription management platform for a small e-commerce business. This involved setting up user accounts, managing subscription plans, and ensuring secure payment processing. In that project, I handled failed payments by implementing webhooks to automatically notify users of payment issues and managed mandates by storing and updating payment details securely. With 7+ years of experience in web development, I've become quite skilled at troubleshooting and optimizing subscription systems. As a solo developer, I’m available 7 days a week, including weekends, to promptly address any urgent issues. For your upcoming rebranding, what specific features or design elements are you looking to incorporate into the new e-commerce frontend? Best regards, Ivan Mandinski
$50 USD in 3 days
7.5
7.5

Hi I have worked on a React, Supabase, and Mollie subscription e-commerce build where React handled the customer portal, Supabase stored users, orders, subscriptions, and Mollie handled checkout, mandates, recurring payments, and webhooks. In that project, failed payments were handled through Mollie webhook status checks, retry flags, subscription status updates in Supabase, customer notifications, and mandate validation before recurring billing continued. I am a solo developer, work directly on GitHub at all times, and can be available 7 days a week for urgent payment or subscription issues. The main technical risk in your system is subscription state drifting between Mollie and Supabase, especially around failed payments, cancelled mandates, webhook retries, and duplicate events. I would audit your database schema, RLS policies, webhook handlers, payment logs, mandate records, recurring billing logic, and frontend subscription states. I can provide a clear written report showing what is correct, what is risky, and what should be fixed before the rebrand. For the upcoming frontend work, I can build a polished React e-commerce interface with clean components, secure Supabase access, and Mollie-ready subscription flows. I am comfortable with video onboarding, clear English communication, and long-term maintenance. Thanks, Hercules
$140 USD in 7 days
7.6
7.6

I work with React and Supabase daily — I built a subscription SaaS (FactuKey, an e-invoicing platform) with React frontend, PostgreSQL backend, and recurring billing with webhook-driven payment lifecycle management including failed payment retries, mandate tracking, and automatic subscription state updates. For Mollie specifically, I've integrated their API for mandate-based recurring payments, handling the webhook flow for payment status changes and automating dunning on failures. For your audit, I'll trace every subscription record in Supabase against Mollie's mandate and payment states, check RLS policies for security gaps, verify webhook reliability, and deliver a clear written report with fixes. I'm a solo developer, available 7 days a week, comfortable with video calls, and all code stays on GitHub — no exceptions. Can start the audit immediately.
$30 USD in 1 day
7.2
7.2

Hello It sounds like you need a robust, scalable system that prioritizes reliability and performance. I have over 5 years of full-stack experience specifically building and optimizing these types of systems, ensuring they handle high traffic without breaking. I understand the technical challenges involved and can deliver a stable, production-ready solution that meets your requirements. Are you available for a brief call to discuss your specific infrastructure and goals? Giáp Văn Hưng
$141 USD in 7 days
7.0
7.0

Hello! From what you described, the immediate audit is the right starting point. Things like webhook reliability, how subscription records are stored in Supabase, how failed payments are recovered, and whether the system can safely scale without breaking billing consistency are usually where hidden issues appear in setups like this. I’ve worked on subscription based systems where the focus was maintaining data accuracy across payment providers and backend databases, especially around edge cases like retries, cancellations, and delayed confirmations. These are the areas that usually decide whether a system stays stable or starts creating support issues as it grows. I’d be comfortable reviewing your current Supabase setup, subscription flow, and Mollie integration and giving you a clear technical picture of what is solid and what needs attention before you move forward. Best regards, Nikita Gupta.
$500 USD in 7 days
6.9
6.9

As a dedicated solo developer with an extensive background in both Front-End Design and Full-Stack Development, I’m confident in my ability to meet your unique project needs. Firstly, let's address your immediate requirement. In a recent project where I utilized React, Supabase and Mollie together, I not only built a custom subscription-based system within an e-commerce platform but meticulously handled potential issues such as failed payments and mandate management with utmost diligence. Nevertheless of whether we embark on a long-term partnership or not, one thing is certain, until you reach satisfaction, I am ready to offer multiple revisions without upfront payments. Let’s discuss further how my diverse skills in Front-End Design and Full Stack Development can drive success for your business.
$250 USD in 7 days
6.9
6.9

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.
$140 USD in 7 days
6.9
6.9

Hi, I can help audit the subscription flow, webhook processing, database consistency, and billing lifecycle to identify why subscriptions may be disappearing, failing to sync, or being counted incorrectly. Before moving forward, I want to be transparent: I have worked extensively with React, Supabase, and payment integrations, but I only apply to projects where I can accurately represent my direct experience. If your requirement is prior production experience specifically combining React, Supabase, and Mollie in the same application, I would be happy to discuss the details and confirm whether my background matches your expectations. I work independently, use GitHub for all code changes, provide clear documentation, and am comfortable with video onboarding and long-term collaboration. Best regards, Zeeshan Ali
$140 USD in 7 days
6.6
6.6

Hello! As a highly experienced full-stack developer specializing in Python web development with over 13 years of experience, I am confident in providing the expertise you need for your e-commerce subscription project. I have worked on advanced projects involving React, Supabase, and Mollie altogether, similar to your requirements. For example, I built a data extraction system that relied on Mollie for recurring payments and successfully handled failed payments through webhook integration. With deep knowledge of failed payment management and mandate solutions, I can effectively audit your Supabase backend system to ensure the accuracy and security of all your subscriptions. My solo developer approach aligns with your preference as I believe a dedicated individual can provide better attention to detail and responsiveness during urgent situations. Rest assured that I meet the required time commitment - being available every day, including weekends, to resolve any pressing matters within one or two hours. This isn't a one-time freelance gig for me; I would love to be your long-term technology partner hand-in-hand as your business grows. Reach out today and let's discuss how my extensive skills in Python, React, Supabase, and e-commerce can elevate your platform.
$40 USD in 1 day
6.6
6.6

I have experience auditing and building subscription-based platforms with React, Supabase, and payment gateway integrations, and can thoroughly review your subscription flow, webhook handling, recurring billing logic, failed payment recovery, and security setup while maintaining all code in GitHub and supporting long-term development needs.
$140 USD in 7 days
6.4
6.4

Hi I can help audit your subscription architecture, payment workflows, webhook processing, and Supabase backend before the rebrand, ensuring the platform is secure, reliable, and scalable. I have experience with React, Supabase, recurring billing systems, webhook-driven integrations, subscription lifecycle management, and ecommerce platforms. My audit process focuses on the areas that typically create revenue leakage and support issues: subscription state synchronization, webhook reliability, failed-payment recovery, entitlement management, database consistency, access control, payment reconciliation, and edge-case handling. The deliverable will be a detailed audit report that identifies risks, prioritizes issues by severity, and provides actionable recommendations. This will include security findings, subscription flow diagrams, webhook validation results, database integrity checks, lifecycle management review, and recommendations for improving reliability before the rebrand. If required, I can also assist with the next phase by implementing the recommended fixes and supporting the React frontend redesign while maintaining clean GitHub workflows, documentation, and testing standards. I prefer long-term engagements where I can gain a deep understanding of the platform, proactively identify risks, and help ensure the business scales without operational surprises. Best, Justin
$140 USD in 7 days
6.4
6.4

Hi, Thank you for the detailed requirements. We've reviewed the scope and have a clear understanding of the objective: auditing your Supabase backend and Mollie subscription system to verify all subscriptions are correctly saved, charged, and secure, then moving into a professional React rebranding project as a long-term development partner. We particularly appreciate the emphasis on a single dedicated developer. In our view, the most critical part of the immediate audit is verifying that Mollie webhook events are correctly updating subscription states in Supabase, since missed or mishandled webhook calls are the most common source of billing discrepancies in recurring payment systems. Based on the information provided, we can cover a full Supabase schema and RLS policy review, Mollie webhook validation and subscription lifecycle audit, failed payment and mandate handling verification, a clear written report of findings, and then the React rebranding project with clean GitHub commits throughout. Kind regards, Houssame
$140 USD in 7 days
6.4
6.4

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