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Hello, I have an Affiliate Marketing Refer & Earn application project with Recharge & Bill Payment services. The project is already around 75% completed and developed in PHP. I am currently looking for a skilled developer to continue and complete the remaining 25% of the project work, including testing, bug fixing, security improvements, API verification, payment gateway testing, admin panel checks, performance optimization, and final deployment support. The pending work mainly includes: • Wallet & payment system verification • Referral & commission system testing • Recharge API integration & testing • Bill payment API integration & testing • UPI payout API integration • Payment gateway testing & failed payment handling • Security improvements • Admin panel testing • Mobile responsiveness & performance optimization • Real payment testing • Final bug fixing & app stability testing • APK/App Bundle generation • Google Play policy verification • Final launch support The project checklist contains 52 verification and testing points that must be completed before final release. Required Skills: • PHP Development • MySQL Database • Payment Gateway Integration • Recharge & Bill Payment API Integration • UPI Payout API Integration • Wallet System Experience • Affiliate / MLM Logic Knowledge • Admin Panel Management • Security & Performance Optimization Please review the project and let me know: 1. Your experience in similar projects 2. Estimated time to complete pending work 3. Project cost estimation 4. Availability for long-term support Thank you. Rajesh Reddy
Project ID: 40445538
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111 freelancers are bidding on average $3,923 USD for this job

Hello Rajesh, I would be glad to help you complete the remaining 25% of your PHP-based Affiliate Marketing Refer & Earn application. I have experience working with PHP/MySQL applications, payment gateway integrations, wallet systems, and API-based services including recharge and transaction workflows. I can take over the existing codebase and focus on testing, bug fixing, security hardening, and completing all pending integrations. I can assist with wallet and commission system verification, recharge and bill payment API testing, UPI payout flow validation, and failed transaction handling. I will also review admin panel functionality, improve performance, and ensure the system is stable under real payment conditions. Security improvements, Play Store readiness checks, and APK/App Bundle preparation can also be handled as part of final deployment support. My focus will be on ensuring all 52 checklist points are properly validated and production-ready before launch. Once I review the current codebase, I can provide a clear timeline, cost estimate, and support plan. I am available for both completion and long-term maintenance if required. Warm regards, Harpreet Singh
$3,000 USD in 5 days
9.5
9.5

With over a decade of experience in PHP development and high-scale systems, I understand the importance of completing your Affiliate Marketing Refer & Earn application project with precision and efficiency. My background in scaling projects for over 1 million users and implementing high-security FinTech solutions directly applies to the challenges you face in finalizing the remaining 25% of your project, including testing, security improvements, and final deployment support. One strategic insight I offer is to prioritize the verification and testing of the payment system and API integrations to ensure seamless functionality. In a similar project, I successfully integrated complex payment systems and conducted thorough testing to guarantee accuracy and reliability. I am confident in my ability to deliver exceptional results within your timeline and budget. Let's discuss further how I can support your project's success. Contact me to explore the roadmap for completing your project and ensuring its long-term success.
$4,000 USD in 45 days
9.0
9.0

Hi. In your project description you mentioned wallet and payment verification plus recharge and bill payment API testing, and both need careful handling. The best way to finish this is to run your 52 point checklist step by step, log every issue, verify each API with sandbox then real calls, and test payment success and fail cases with proper callbacks, retries, and clear wallet ledger entries. I'll also take care of workflow of admin panel checks, security hardening, and Google Play + APK/AAB release steps. If you'd like, I can outline the cleanest architecture for this so it scales smoothly without future rebuild. I’ll keep you updated daily, focus on clean fixes, save your time, and help you launch faster so you can start earning sooner. After delivery I can stay for long term support and updates too. Let me know if you'd like me to break this down clearly. Regards, Nick.
$3,000 USD in 18 days
9.5
9.5

Hi Rajesh, I looked over the 52 verification points for your Affiliate Marketing app and the specific UPI payout API integration requirements. Picking up a 75% finished PHP project is often harder than starting fresh. The risk usually hides in the commission logic and failed payment handling. I can step in to secure your belt and wallet systems while making sure the bill payment APIs communicate correctly with your admin panel. My goal is to move you from this unfinished state to a stable APK that actually meets Google Play policy standards. I will focus on real payment testing to make sure no revenue is lost at launch. You can see how I handle detailed reporting here: https://www.freelancer.com/portfolio-items/11354470-software-qa-testing-report. I am available to start immediately and provide long-term support as you scale. Want a 2-min screen recording of how I would build automated UPI payout reconciliation? Just say the word. Rajesh
$4,000 USD in 7 days
9.4
9.4

With over a decade of experience in web and mobile application development, I'm confident that I possess the skills necessary to complete your Affiliate Marketing & Payment App project. From the sound of it, your current application sits at a critical juncture- the final 25% that demands meticulous testing, API integration, performance optimization and payment gateway verification. In my career journey, I have worked on similar projects involving UPI payout integration, wallet system verification, fixing failed payment issues and payment gateway. Given the complexity of your project and your checklist of 52 meticulous testing points before deployment, it is clear that it requires not just a skilled developer but someone with a deep knowledge of PHP Development, MySQL Database Management, Payment Gateway Integration to address issues professionally. My proficiency in all these areas and my past experiences with building and overseeing complex systems from scratch makes me an ideal choice to undertake the remaining stages. Additionally, as an experienced developer, I understand that commitment doesn't end with finishing up a project; you need continuous support for launch and post-launch activities. In this regard, I affirm total availability for long-term support should you require any assistance after the completion of this phase.
$4,500 USD in 50 days
9.5
9.5

⭐⭐⭐⭐⭐ Proposal to Valuable Client (Rajesh Reddy) We at CnELIndia specialize in PHP-based affiliate & payment apps with recharge, bill pay, wallet, and UPI systems; have delivered 12 similar projects successfully. Estimated completion time for remaining 25% work (all 52 checklist points, testing, security, APIs, optimization, APK & launch): 12 working days. Project cost: INR 48,000 (one-time, inclusive of bug fixes, real payment testing, deployment & 1-month free support). Long-term support: Available at INR 8,000/month for updates & maintenance. How CnELIndia team will help complete the project successfully: Day 1-3: Full code audit, wallet/referral/commission verification & security hardening. Day 4-7: Recharge, bill payment & UPI payout API integration + live testing with payment gateways & failed transaction handling. Day 8-10: Admin panel checks, mobile responsiveness, performance optimization & real-payment testing. Day 11-12: Bug fixing, APK/App Bundle generation, Google Play policy verification & final deployment support. Ready to start immediately upon confirmation. Looking forward to partnering for a stable launch. Best regards, CnELIndia Team
$4,000 USD in 7 days
9.0
9.0

Hi, I will complete the remaining 25% of your affiliate marketing app — wallet and payment system verification, recharge and bill payment API testing, UPI payout integration, referral commission logic validation, and final deployment to Google Play. Since the codebase is already 75% done in PHP, I will start with a structured audit of all 52 checklist points, prioritizing payment flows first. For failed payment handling, I will implement idempotency keys and webhook-based status reconciliation — this prevents duplicate transactions and ensures wallet balances stay accurate even when gateway callbacks are delayed or lost. That single layer eliminates most payment-related support issues post-launch. Questions: 1) Which recharge and bill payment API providers are currently integrated — or do you need recommendations? Looking forward to discussing further. Best regards, Kamran
$3,450 USD in 30 days
8.5
8.5

Hello Rajesh, You’re not looking for a fresh build , you need someone who can step into an already-advanced PHP system, spot the weak links fast, and safely bring the last 25% to launch without disturbing the working 75%. That’s exactly the kind of handover work I handle well. I’ve spent 15+ years on PHP/MySQL platforms, payment flows, API-heavy systems, and app finalization, including wallet logic, affiliate/referral engines, recharge and bill payment integrations, admin panel validation, and security/performance cleanup. I’ll start by auditing the 52-point checklist, then verify each module end-to-end: commission and wallet flows, recharge/bill APIs, UPI payouts, failed payment handling, Play policy readiness, APK/App Bundle generation, and final deployment stability. 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. 1) Which payment/recharge APIs are already integrated, and which still need verification? 2) Do you have the current source code, credentials, and test sandbox access ready? 3) Should I also cover post-launch support after the Play Store release? I can review the codebase first and give you a precise completion plan within 24 hours. Which of the 52 verification points are still unverified or failing right now? Sincerely, Asad
$3,500 USD in 30 days
8.3
8.3

Hello Rajesh, I am a full-time senior PHP developer with 11+ years of experience in building and completing production-level web applications, especially in payment systems, wallets, APIs, and admin dashboards. I have carefully reviewed your requirements and understand the project is already 75% complete, and you need strong expertise to finalize testing, debugging, security hardening, API validation, and production deployment. I have solid experience working with: • PHP & MySQL architecture and optimization • Wallet and referral/commission systems • Recharge & bill payment API integrations • UPI payout and payment gateway testing • Security audits, bug fixing, and performance tuning • Admin panel validation and production deployment • Play Store submission and compliance checks I can efficiently take over the existing codebase, complete the remaining 25% work, and ensure the system is stable, secure, and production-ready with proper testing across all 52 checkpoints. Availability: Ready to start immediately and can dedicate full-time focus until final deployment and post-launch support. I am also available for long-term maintenance if required. Thanks.
$3,000 USD in 7 days
7.3
7.3

Hi Rajesh, We’ve developed similar affiliate systems with wallet features and integrated multiple payment gateways, including Stripe and PayPal. We also have extensive experience with PHP frameworks like Laravel and CodeIgniter, which are ideal for building secure, scalable solutions. In addition to PHP, we’ve worked with JavaScript frameworks like Vue.js and React.js, and we can provide dedicated front-end developers to ensure your product is fully optimized and responsive. We’re also strong advocates of Agile development, which allows us to adapt quickly to changing requirements and deliver a product that truly meets your needs. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best regards, Adil
$4,400 USD in 21 days
7.3
7.3

Hi, this project involves completing a partially built affiliate marketing and payment app with complex integration points and critical stability requirements. The main engineering risk lies in orchestrating reliable payment flows and ensuring data consistency across multiple payment and referral subsystems. I usually structure such systems by separating the payment processing, referral logic, and admin controls into distinct modules with clear transactional boundaries to simplify testing and error handling. Though my recent projects focus on AI and automation pipelines, my experience with PHP-based custom feature development and integration equips me to conduct thorough codebase reviews and deliver maintainable fixes and enhancements. I approach payment system reliability by implementing robust error detection and fallback strategies, ensuring failed transactions do not corrupt wallet balances or referral commissions. I design systems for long-term production use, emphasizing security, performance, and maintainability. I can start by outlining the verification and testing strategy for wallet and payment modules and sketching the integration flow for the recharge and payout APIs. Thanks, Hercules
$4,000 USD in 7 days
6.8
6.8

Hi Rajesh, I can take over the remaining 25% of your PHP-based Affiliate Marketing Refer & Earn platform, including wallet verification, recharge/bill payment API testing, UPI payout integration, payment handling validation, security hardening, admin panel checks, APK generation, Google Play compliance review, and final deployment stabilization. My experience includes PHP/MySQL platforms, payment gateway integrations, wallet systems, API-driven applications, affiliate/referral workflows, backend optimization, security improvements, and production testing for transaction-based systems where reliability and auditability are critical. I would begin with a full audit of the current codebase and 52-point checklist, then systematically complete integration verification, real payment testing, performance/mobile optimization, failed-payment handling, bug fixing, and launch preparation while remaining available for long-term maintenance and support after release. Best regards, Stratos
$4,000 USD in 7 days
7.2
7.2

Hi, I will ensure the seamless completion of your Affiliate Marketing & Payment App, focusing on wallet & payment system verification, API integrations, security enhancements, and final deployment. You can expect a fully functional and optimized application tailored to your specific requirements. I will handle the remaining 25% of the project diligently, ensuring thorough testing, bug fixing, and performance optimization. Regular updates and clear communication will keep you informed throughout the process, making it easy for you to track progress and provide feedback. How do you envision the user engagement strategy evolving post-launch? Let's chat further so I can give you a proper timeline and get things moving.
$3,000 USD in 7 days
6.6
6.6

I have strong experience completing and optimizing PHP-based affiliate, wallet, recharge, and payment platforms, including API validation, payout systems, security hardening, admin testing, and final deployment. I can efficiently handle the remaining 25%, complete your 52-point checklist, estimate timelines/cost after project review, and provide reliable long-term support through launch and beyond. Best Regards, Muhammad
$3,000 USD in 1 day
6.4
6.4

Hi Rajesh, Your project is well-structured, and I can help complete the remaining 25% and prepare the platform for a stable production launch. I have strong experience with PHP, MySQL, wallet systems, payment gateways, API integrations, affiliate commission logic, and security hardening. I can thoroughly verify all 52 checklist items, including wallet transactions, referral and commission calculations, recharge and bill payment APIs, UPI payouts, failed payment handling, admin panel functionality, performance optimization, and final deployment support. I am also comfortable generating the Android APK/App Bundle and reviewing the app against Google Play policy requirements. My approach includes staged testing with detailed reports, real payment validation, bug fixing, and security improvements to ensure the application is reliable and scalable. I can provide ongoing support after launch for maintenance and future enhancements. I would be happy to review the current codebase and checklist to provide a precise timeline and cost estimate. Best, Justin
$4,000 USD in 30 days
6.3
6.3

Hello Rajesh, I have 10+ years of experience in PHP, MySQL, wallet systems, payment gateway integrations, affiliate/referral platforms, recharge APIs, and scalable admin panel development. I have previously worked on fintech, commission-based, and transaction-heavy applications involving secure payment processing and payout workflows. Since your platform is already 75% completed, I can efficiently handle the remaining development, verification, testing, optimization, and deployment tasks. I’m experienced with: * Wallet & transaction systems * Referral/commission logic validation * Recharge & bill payment API integrations * UPI payout integrations * Payment failure handling & reconciliation * Security hardening & performance optimization * Admin panel testing & stability improvements * APK/App Bundle generation & Play Store compliance I’m also available for long-term maintenance, upgrades, and future feature expansion. Best regards
$3,000 USD in 7 days
5.9
5.9

As a skilled and experienced developer, I understand the immense value of completing any project to perfection, and that is exactly what I bring to the table. Not only have I been working with PHP for X number of years, but also extensively with MySQL database management. I have hands-on experience in payment gateway integration as well as wallet system understanding, making me an ideal choice for this project. Additionally, my work in Affiliate/MLM logic knowledge will be crucial to verify your referral and commission systems. Considering the remaining tasks you've outlined, I estimate it will take approximately X weeks/months - ensuring steady progress without compromising on quality. My comprehension of Recharge & Bill Payment API integration and UPI Payout API integration aligns perfectly with your requirements. Apart from that, my familiarity with admin panel management allows me a comprehensive approach to testing - ensuring the highest standards of security and performance optimization. Lastly, long-term support is something I am always available for my clients, even after the project is over. This speaks not only for my commitment but also for the absolute confidence I carry in the quality of my work.
$3,000 USD in 30 days
5.5
5.5

hi, i have experience working on php based systems with wallet logic, payment gateways, and api integrations. i can take over the remaining 25 percent and complete testing, bug fixing, and optimization. i will verify wallet flows, referral and commission logic, recharge and bill apis, and upi payouts. i will also handle failed payment cases, improve security, test admin panel, and ensure mobile performance. final steps will include real payment testing, stability checks, and support for apk and play store readiness. estimated time is around 7 to 12 days depending on current code quality. i am also available for long term support. can we schedule a quick meeting to discuss the project in detail. it will help me review your checklist and give you a clear plan and final cost. i will also share my portfolio during the chat. mughiraa
$4,000 USD in 7 days
5.5
5.5

With a dazzling 7+ years as a Full-Stack Developer, I am well-positioned to complete your Affiliate Marketing and Payment App. My impressive portfolio includes the successful delivery of countless web applications, mobile apps, SaaS platforms and AI-powered solutions similar to your project for businesses of varying scales. Since I thrive on efficiently maximizing development time, my estimated deadline for completing the pending work would be brisk - with absolutely zero compromise on quality— thus aligning with your project goals. Regarding the cost estimation, while it depends on the specific requirements that need addressing during the remaining 25% of the project, I offer competitive rates that bring ideal value for money without jeopardizing quality. In fact, my efficiency and commitment to timeliness enable me to respect your budget while delivering premium quality results. Furthermore, my proficiency in PHP development, MySQL Database management and API integration aligns with your specific needs for referral systems, recharge and bill payment systems among others. I have hands-on experience with UPI payout API integration、Payment Gateway Integration、Salesforce API validation which will definitely enhance security aspects. My practice in wallet systems also assures proper verification and stability ensuring real payment testing is problem-free. Lastly, I assure you future support for any issues that occur beyond project completion.
$4,000 USD in 20 days
5.5
5.5

Since most of your PHP refer & earn recharge system is already done, the remaining 25% is really about making the money flow and API behavior bulletproof rather than adding features. I’d start by pulling the code, setting up staging environment, and going through your 52-point checklist as live test plan. First focus is wallet ledger consistency—every recharge, bill pay, and referral commission should reconcile between API callbacks and database entries. Then I’d validate recharge APIs, bill payment flows, and UPI payout integration in sandbox and real mode, ensuring idempotency so retries from gateways never double-charge or double-credit. After that I’d tighten security around webhooks, auth flows, and request validation, then audit admin panel for edge cases like failed or delayed payments. Finally I’d handle performance tuning, mobile responsiveness, APK build, Play Store policy checks, and deployment. I usually add a transaction audit log to make future debugging easier. Is there a preferred payment gateway you want prioritized for final testing?
$4,000 USD in 10 days
5.1
5.1

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