
Closed
Posted
Paid on delivery
I'm looking for a system that can effectively process online debit card transactions. The primary focus of this project is on handling payments seamlessly and securely. Key Requirements: - The system should be capable of processing payments from debit cards for online transactions exclusively. - The project must incorporate two-factor authentication as a security feature for online transactions to enhance safety and trust. Ideal Skills: - Extensive experience in developing secure online payment systems. - Knowledgeable about integrating Two-Factor Authentication in payment transactions. - Strong understanding of handling debit card transactions.
Project ID: 40641337
32 proposals
Remote project
Active 6 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
32 freelancers are bidding on average $1,065 USD for this job

Hi! I can build a secure online debit-card payment system with a smooth checkout flow and strong transaction security. I recommend integrating a PCI-compliant payment gateway such as Stripe rather than handling card details directly. The system can support 3D Secure/Strong Customer Authentication (SCA) where required, along with two-factor authentication for user accounts and sensitive actions. I’ll handle the payment flow, webhook verification, transaction status handling, security measures, and testing in sandbox mode before production. Estimated timeline: 1–2 weeks. Muhammad.
$750 USD in 7 days
9.1
9.1

Hello, Assemble your debit card processing needs with my extensive experience of over eight years, specializing in website development and graphic design services. With a deep-rooted understanding of creating secure online payment systems and integrating two-factor authentication, I am well-equipped to build your ideal system. I have worked with several popular platforms like WordPress, Shopify, and WIX, and possess the ability to bring Thanks!
$999 USD in 5 days
7.9
7.9

Hi! This is something we can handle. Before going further — are you looking to build a custom payment gateway from scratch, or integrate an existing provider like Stripe, Braintree, or a regional processor? That one decision changes the scope (and cost) significantly. Also, what country will this operate in? Some processors are region-specific. We'd approach this with a secure backend, proper tokenization so card data never touches your servers directly, and 2FA layered on top of the transaction flow. Happy to scope this properly once I know a bit more. Gustavo & the DoTheCode team
$1,500 USD in 21 days
7.8
7.8

HI There — For a payment system like this, the priority is secure transaction handling, reliable payment processing, and a smooth customer experience—not simply connecting a card form. I’d structure the solution around: • Online debit-card payment processing • Secure payment-gateway integration • Two-factor authentication for transaction security • Proper handling of authentication and payment states • Clear success, failure, and verification flows • Secure data handling with sensitive card data kept out of the application where possible • Testing of the complete payment journey before hand-off The system will be designed as a professional, optimized payment solution with security and reliability built into the workflow from the start. We operate on US hours and treat projects like a dedicated full-time job, backed by our 100% satisfaction and performance guarantee. Open the chat and I’ll share the proposed architecture, security approach, relevant samples, and implementation plan tailored to your payment requirements. Waqas Ahmed Full-Service Software House | Web/App Development, Design, SEO & Content Writing
$1,125 USD in 7 days
6.4
6.4

Your payment gateway will fail PCI-DSS compliance audits if you're storing card data directly instead of tokenizing through a certified processor like Stripe or Authorize.net. This exposes you to massive liability and potential shutdown by card networks. Quick questions - are you planning to handle card data server-side or use a tokenization API? And what's your expected transaction volume per month? Here is the architectural approach: - PHP/PYTHON BACKEND: Build a secure payment processor using Stripe API with webhook handlers for real-time transaction status updates and automated reconciliation. - TWO-FACTOR AUTHENTICATION: Implement SMS or authenticator app-based 2FA using Twilio API integrated with your user session management to verify high-risk transactions. - PCI COMPLIANCE: Use tokenization to avoid storing raw card numbers, encrypt all sensitive data with AES-256, and implement rate limiting to prevent brute-force attacks on payment endpoints. I've built payment systems for 2 fintech clients processing $5M+ monthly with zero security breaches. Let's schedule a 15-minute call to review your compliance requirements before you start development.
$1,020 USD in 30 days
7.0
7.0

I understand you need a secure and smooth online debit card payment system with two-factor authentication. From past projects, I’ve built payment gateways that focus on debit card processing and layered security to cut fraud risks. To ensure seamless payments, I’ll integrate a reliable payment processor that supports real-time debit card validation. Adding two-factor authentication will reduce unauthorized transactions and build user trust. Do you have a preferred 2FA method in mind—SMS, authenticator apps, or something else? A quick setup and test with sandbox environments will confirm everything works before going live. I’ve handled similar tasks for e-commerce clients needing secure payment flows with extra login verification, so I can get this done efficiently with minimal delays. Ready to start building your system and make payments effortless and safe for your users.
$750 USD in 7 days
6.0
6.0

Hi, I can design this around a PCI-compliant payment provider rather than allowing raw debit-card data to pass through your servers. The safest approach is a custom checkout using the provider’s hosted fields or SDK, so card details are tokenized directly by the gateway while your application receives only payment and customer references. The “two-factor authentication” requirement should normally be implemented through 3-D Secure 2, where the issuing bank performs risk-based authentication and requests an OTP, banking-app approval, or biometric check when required. Building a separate homemade OTP layer would not replace issuer authentication or card-network requirements. The payment flow would cover authorization, capture, decline handling, duplicate-submit protection, idempotency, refunds, signed webhooks, reconciliation, receipts, and an auditable transaction history. Sensitive operations would require role-based access and administrator MFA. I would also include encryption, secret management, rate limiting, monitoring, fraud signals, clear customer error states, and sandbox tests for successful, declined, challenged, timed-out, duplicated, and refunded transactions. Compliance scope and data retention would be documented before launch. Regards, Houssame
$1,125 USD in 7 days
6.6
6.6

Hi, I can build a secure online debit-card payment system with proper 2FA, transaction validation, secure authentication, and a reliable backend for processing and tracking payments. I’ll use established payment-gateway APIs rather than handling raw card data directly, with secure tokenization, HTTPS, webhook validation, and PCI-conscious architecture. I can build it in PHP/Python with a clean, maintainable structure. Estimated timeline: 1–2 weeks. Fixed price: $1,200. Do have a look at my profile portfolio for similar payment/integration work. Best regards, Ammar Malik
$750 USD in 8 days
4.5
4.5

Hello, I checked your project "Online Debit Card Payment System" and already have a clear understanding of your requirements and how to deliver them efficiently. I have solid experience in PHP, Website Design, and I've successfully completed similar projects by delivering high-quality, scalable, and reliable solutions. Why choose me? * Strong expertise in PHP, Website Design * Clean, optimized, and scalable implementation * Fast communication and regular progress updates * Focused on delivering results, not just completing the task I'm ready to start immediately and would be happy to discuss the details. Best regards, Umer
$750 USD in 5 days
4.1
4.1

Hi, I can help you build a secure online debit card payment system that processes transactions effectively. I have extensive experience in developing secure payment systems and integrating two-factor authentication to enhance safety and trust, crucial for handling debit card transactions. In a previous project, I developed a payment platform that achieved PCI compliance and successfully processed thousands of transactions while maintaining user trust. My approach would involve using solid encryption for data security and a reliable API for debit card processing. I’m confident I can deliver this for $[Price] in 7 days. How do you envision the user experience for your payment system?
$900 USD in 7 days
3.1
3.1

Hi ❤️ Hope everything is going smoothly ❤️ The main points that have to be implemented are secure online debit card payment processing, transaction validation, two-factor authentication, protected payment data handling, error and fraud controls, and reliable confirmation flows. For implementation, I recommend using a PCI-compliant payment gateway such as Stripe, Adyen, or another processor that supports debit cards and 3D Secure 2, with a secure backend in Python or PHP, tokenization, webhook verification, and OTP/2FA where appropriate. This avoids storing raw card data while keeping the checkout secure and maintainable. Based on my experience, I can implement the complete solution within 2 to 3 weeks, and the budget is $800. If you let me know which payment processor or acquiring bank you plan to use, I will start right now. Warm regards, Youssef
$800 USD in 15 days
2.5
2.5

HI, I have 2 plus years of experience with HTML, CSS, JavaScript, PHP, responsive web development, and API integration. A visually strong stained glass site can lose buyers if the mobile experience is slow or checkout feels disconnected, so I would build a lightweight responsive storefront with optimized looping video, polished product cards, popup cart, and Stripe integration. I would use Stripe Checkout because its hosted payment flow reduces PCI scope while supporting cards and wallet payments. Mobile video optimization is important here because large background assets can directly impact initial load speed. Will the two products have fixed stock quantities that need tracking in the checkout flow. Happy to discuss details in chat. Regards, Muhammad Arriyan
$825 USD in 7 days
0.0
0.0

Hello, I can build a secure online debit card payment system focused exclusively on debit-card transactions and seamless checkout. I will design the flow to support safe payment processing, strong transaction validation, and a clean user experience. Two-factor authentication will be integrated to add an extra security layer for online payments, helping protect users and strengthen trust. I can also structure the system for secure token handling, error management, and clear transaction status responses. My approach is to deliver a reliable payment solution with security and practicality at the center. Best regards, Panagiotis
$1,250 USD in 5 days
0.0
0.0

Hello, I'm writing to propose my services as a Full Stack Developer for your Online Debit Card Payment System project. Your primary requirement is to build a secure and seamless system for processing online debit card transactions, incorporating two-factor authentication. For the frontend, I will leverage my Website Design and HTML skills to create a user-friendly and intuitive interface for payment processing. This will ensure a smooth user experience for your customers. On the backend, I will utilize my expertise in PHP and Python to develop robust and secure APIs for handling debit card transactions and integrating the crucial two-factor authentication mechanism. My experience with secure online payment systems aligns perfectly with your project's needs. Database integration will be essential for securely storing transaction details and user information. I will implement a suitable database solution to ensure data integrity and efficient retrieval. Should an existing system be in place for other functionalities, I can integrate the new payment gateway using well-defined APIs, ensuring minimal disruption and seamless data flow. I will incorporate thorough testing throughout the development lifecycle to guarantee the system's reliability and security. Post-deployment, I can also provide ongoing maintenance and support to ensure the payment system operates flawlessly. Regarding your existing codebase or design, could you please specify the current technology stack and any APIs that would need to interact with this new payment system? Best Regards bhargav922002
$1,050 USD in 3 days
0.0
0.0

Islamabad, Pakistan
Payment method verified
Member since Dec 21, 2024
₹600-1500 INR
₹12500-37500 INR
₹750-1250 INR / hour
$250-750 USD
₹400-750 INR / hour
$15-25 USD / hour
₹12500-37500 INR
₹600-1500 INR
₹750-1250 INR / hour
₹12500-37500 INR
$10-30 USD
$250-750 USD
₹1500-12500 INR
$10-30 USD
₹750-1250 INR / hour
$15-25 USD / hour
₹750-1250 INR / hour
₹12500-37500 INR
₹1500-12500 INR
$15-25 USD / hour