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I need a single orchestration layer that can process Visa, Mastercard and American Express transactions for both my web checkout and native mobile apps. The flow must be protected with strong data encryption end-to-end and handle multiple currencies because our customers buy from several regions. Here’s what I am after: • A self-hosted or cloud-deployable gateway that exposes clean REST/JSON endpoints for authorise, capture, refund and void operations. • Built-in tokenisation so no raw card data ever touches my front-end. • Configurable routing logic (primary and fallback acquirers). • Detailed, exportable logs plus webhooks for real-time transaction updates. • Full technical documentation and a Postman collection so my team can plug it straight into our React/Swift/Kotlin codebases. • Automated tests that cover success paths and common declines. Acceptance criteria • I can run test Visa, Mastercard and Amex numbers against a sandbox you provide and see authorisation, settlement and refund behave correctly. • All sensitive fields are encrypted at rest and in transit with recognised industry algorithms. • Currency code and FX rate parameters are respected in every request, with accurate amounts returned. • Deployment instructions work start-to-finish on a fresh environment without manual tweaks. Let me know which language or framework you prefer (Node, Java, Go, etc.) and any third-party services you plan to use so we can evaluate compliance and latency.
Mã dự án: 40328532
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122 freelancer chào giá trung bình $768 USD cho công việc này

⭐️⭐️⭐️Multi-Card Payment Orchestration Layer for Web & Mobile⭐️⭐️⭐️ Hello, I’ve reviewed your requirements and understand the full scope: you need a unified payment orchestration layer supporting Visa, Mastercard, and American Express across web and apps, with end-to-end encryption, multi-currency support, and full tokenisation. Key Features: • Self-hosted or cloud-deployable REST/JSON gateway with endpoints for authorise, capture, refund, and void. • Built-in tokenisation and secure handling of sensitive card data. • Configurable routing logic with primary and fallback acquirers. • Detailed logging, exportable reports, webhooks for real-time updates, and automated test coverage. • Full technical documentation, Postman collection, and deployment instructions for React/hybrid app integration. Many more as per your need… Let’s connect over chat to discuss preferred frameworks (Node.js/Java/Go) and third-party services for compliance, latency, and full implementation planning. Thanks
$700 USD trong 7 ngày
9,3
9,3

I CAN DELIVER A SECURE AND SCALABLE PAYMENT GATEWAY SOLUTION FOR YOUR BUSINESS I have experience developing similar projects, including building a secure payment gateway for XYZ E-commerce, which involved handling Visa, Mastercard, and Amex transactions, ensuring secure payment flows, and integrating with third-party services. I can show you the demo. For your project, I will create a self-hosted or cloud-deployable payment gateway that securely handles transactions across multiple currencies. Key features will include: Transaction Operations: RESTful endpoints for authorize, capture, refund, and void operations, supporting Visa, Mastercard, and Amex. Data Encryption: End-to-end encryption of sensitive data with no raw card data on the front end. Tokenization will ensure security for card details. Routing Logic: Configurable primary and fallback acquirers to ensure reliable transactions. Transaction Logs & Webhooks: Real-time updates via webhooks, and detailed, exportable logs for monitoring Once completed, I will provide you with clear deployment instructions and ensure that the system meets your security and multi-currency requirements, including the accurate use of FX rates. Let’s discuss the details, and I’ll be ready to deliver the system as per your timeline.
$700 USD trong 7 ngày
8,3
8,3

Hi, We can build this orchestration layer for you. Our team has experience with payment gateways, tokenized card flows, web/mobile integrations, and secure transaction services. Proposed stack: • Node.js/TypeScript or Java • PostgreSQL • Dockerized deployment for self-hosted or cloud setup What we will deliver: • REST/JSON API for authorize, capture, refund, and void • Tokenization flow so raw card data does not touch your frontend • Routing engine with primary/fallback acquirer logic • Multi-currency support with correct FX handling and amount normalization • Webhooks, exportable logs, Postman collection, and full technical docs • Automated tests for approvals, declines, refunds, and voids Security approach: TLS in transit, AES-256 at rest Signed webhooks, audit logs, idempotency keys PCI-aware architecture with strict secrets handling We understand the key challenges here: unified response format, acquirer failover, low latency, and keeping the integration simple for React, Swift, and Kotlin teams. We can also structure the code with provider adapters, so adding new acquirers later is straightforward. Happy to discuss timeline, preferred acquirers, and the fastest rollout plan. Best regards
$700 USD trong 7 ngày
7,4
7,4

I have extensive experience in Mobile App Development, iPhone, Objective C, iPad, and Laravel, making me a perfect match for the Secure Card Payment Orchestration project. I am confident in my ability to deliver a self-hosted or cloud-deployable gateway with strong data encryption, tokenization, and configurable routing logic. My skills align with the requirements, and I am eager to discuss the project scope to ensure it fits your budget. Please review my 15-year-old profile for assurance of quality work. Let's start this project together.
$699 USD trong 10 ngày
7,0
7,0

At CnELIndia, we have been at the forefront of secure and efficient payment orchestration for well over a decade. Our vast experience and deep knowledge in API development will prove invaluable in creating an intuitive single orchestration layer for your Visa, Mastercard, and American Express transactions. Plus, our prowess in web and mobile app development ensures seamless integration with your existing React, Swift, or Kotlin codebases. A core concern for us is data security. We will build a self-hosted or cloud-deployable gateway that guarantees not only strong end-to-end data encryption but also tokenization of sensitive card data—ensuring your customers' safety. Furthermore, our solutions are always keen on respecting currency codes and FX rates in all requests to deliver accurate amounts each time, which will be fundamental in handling your multi-regional customer base. To guarantee a smooth workflow for you and your team post-deployment, we'll be providing comprehensive technical documentation and a Postman collection to allow quick and easy integration into your codebases. Additionally, our tests will cover all success paths as well as potential declines to ensure all scenarios are accounted for - leaving no stone unturned in guaranteeing a flawless system. In summary, my team at CnELIndia is tailor-made to offer you a professional, secure, and robust orchestration solution that precisely caters to your unique needs.
$700 USD trong 7 ngày
7,2
7,2

Hello, I came across your project and found it truly interesting. With over eight years of hands-on experience in this field, I have successfully delivered high-quality solutions to clients worldwide. My dedication to excellence is reflected in the 180+ positive reviews from satisfied clients. I’d love to bring this expertise to your project and ensure outstanding results. However, I do have a few important points I’d like to clarify to align perfectly with your vision. Let’s connect via chat so I can share relevant examples of my past work. I look forward to hearing from you. Best Regards, Divu.
$700 USD trong 7 ngày
6,3
6,3

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, specifically in creating secure, scalable payment orchestration layers. My focus is on clean architecture and robust security practices, ensuring your customers' transactions are protected with strong data encryption from end-to-end. I will design a self-hosted or cloud-deployable gateway that meets your requirements and exposes clean REST/JSON endpoints for transaction operations. My solution will include built-in tokenisation, configurable routing logic, and detailed, exportable logs, allowing for easy integration with your React/Swift/Kotlin codebases. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Which programming language or framework do you prefer for this project, and are there specific third-party services you plan to integrate? Let’s discuss over chat! Regards, Arpit Jaiswal
$699 USD trong 25 ngày
7,4
7,4

Hello There!!! ★★★★ (Secure multi-currency card payment orchestration for web & mobile) ★★★★ I understand you need a unified payment orchestration layer to handle Visa, Mastercard, and Amex for web and native apps, with end-to-end encryption, multi-currency support, tokenisation, configurable acquirer routing, detailed logging, and webhook updates. The system must be fully testable in a sandbox with secure deployment instructions. ⚜ Build a secure REST/JSON gateway for authorise, capture, refund, and void ⚜ Implement tokenisation to keep card data off the front-end ⚜ Configure primary and fallback acquirer routing ⚜ Support multi-currency transactions with FX accuracy ⚜ Generate exportable logs and real-time webhooks ⚜ Automated tests for success and common declines ⚜ Provide full technical documentation and Postman collection I have extensive experience building secure payment APIs in Node.js and Laravel with multi-currency support, tokenisation, and encrypted data handling. I focus on clean architecture, compliance, and easy maintainability. I can deliver a fully tested, production-ready system with clear deployment steps. Warm Regards, Farhin B.
$700 USD trong 7 ngày
6,5
6,5

Hello, I’m excited about your Secure Card Payment Orchestration project. With over five years of experience in API development and payment processing, I can build a robust orchestration layer that meets your strict requirements. I will create a self-hosted solution utilizing Node.js, ensuring clean REST/JSON endpoints for all transaction operations and robust tokenization to safeguard sensitive data. Plus, I will implement detailed logging and webhook functionality for real-time updates. One enhancement idea is to include a machine learning model to identify and flag potential fraudulent transactions, which could add an extra layer of security. I recently completed a similar integration for an e-commerce platform that involved processing multiple payment types while ensuring compliance and security. I can deliver your project in about 4-6 weeks to allow ample testing and adjustments. Regards, Khurshid Ahmed
$699 USD trong 4 ngày
5,6
5,6

Hi, I can develop a secure card payment orchestration layer for your web checkout and native mobile apps. Using Node.js, I will create a self-hosted or cloud-deployable gateway with REST/JSON endpoints for Visa, Mastercard, and American Express transactions. The solution will include built-in tokenization, configurable routing logic, detailed logs, webhooks, and a Postman collection for seamless integration with React/Swift/Kotlin codebases. Automated tests will cover success paths and declines. I will provide a sandbox for testing, ensure encryption of sensitive data, respect currency codes and FX rates, and deliver deployment instructions for easy setup. Let's discuss any third-party services for compliance and latency evaluation. Thank you.
$699 USD trong 20 ngày
5,6
5,6

Hello! As per your project post, you’re looking to build a secure card payment orchestration layer that processes Visa, Mastercard, and American Express transactions across web and native mobile apps, with strong encryption, multi currency support, tokenization, routing logic, and clean REST APIs. The goal is to deliver a self hosted or cloud deployable payment gateway that provides secure authorization, capture, refund, and void operations with detailed logs, webhooks. My focus will be on delivering a secure payment orchestration system, featuring: REST and JSON based gateway for authorize capture refund and void operations, end to end encryption with tokenization to prevent raw card data exposure, multi currency transaction handling with configurable routing and fallback acquirers, webhook based real time transaction updates with detailed exportable logs. I specialize in payment gateway architecture, secure backend development, API orchestration layers, and fintech grade integrations with focus on security, performance, and maintainability. My focus will be on building a robust orchestration layer that supports multiple acquirers, strong encryption, and clean integration for your development team. Let’s connect to review your preferred acquirers, hosting environment, and compliance requirements so we can finalize the system architecture and deployment approach. Best regards, Nikita Gupta.
$700 USD trong 7 ngày
5,7
5,7

I have read your job post and understand that you need a secure, production-grade payment orchestration layer capable of handling multi-card processing (Visa, Mastercard, Amex), tokenisation, routing, and multi-currency supportexposed via clean REST APIs and ready for integration across web and mobile apps. I’ve worked on payment integrations and secure transaction systems, including tokenized flows, webhook-driven architectures, and multi-gateway routing. The solution will be scalable, compliant-ready, and optimized for low latency across regions.
$700 USD trong 12 ngày
5,7
5,7

Hello, I’ve carefully reviewed your project and am excited about the opportunity to work with you. With over 7 years of experience in secure API development and payment processing orchestration, I specialize in delivering robust multi‑network transaction solutions. I am confident I can build a unified layer that handles Visa, Mastercard and Amex securely across web and mobile while supporting multi‑currency flows end to end. Here’s my approach: Build a self‑hosted or cloud‑ready gateway with clean REST JSON endpoints for authorise, capture, refund and void. Implement strong tokenisation so your front ends never touch raw card data. Add acquirer routing logic, webhook notifications and detailed logs with export options. I am available to start immediately and aim to deliver a fully operational orchestration layer with documentation and Postman collection within 14 days. Additional instructions optional Full sandbox setup for card scheme testing. Deployment scripts that run cleanly on fresh environments. Best regards, Jushua
$780 USD trong 5 ngày
5,4
5,4

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have successfully developed secure payment orchestration systems before that easily processed multiple card networks with seamless API integration. From my experience, the key to success in this project is ensuring end-to-end encryption combined with robust tokenization for security compliance. Approach: ⭕ Design and build a RESTful gateway with clean JSON endpoints for all payment operations. ⭕ Implement strong tokenization to prevent sensitive card data from reaching the frontend. ⭕ Develop configurable routing with primary and fallback acquirers. ⭕ Provide detailed logs and real-time transaction webhooks. ⭕ Deliver comprehensive documentation and a Postman collection for easy integration. ⭕ Write automated tests covering success and failure scenarios. ⭕ Ensure multi-currency support with proper FX handling. ⭕ Provide deployment scripts for seamless start-to-finish setup. ❓Could you please specify the preferred programming language and hosting environment? ❓Do you have specific acquirer providers or gateways in mind? ❓Would you require PCI DSS compliance assistance? I am confident in delivering a secure, scalable payment orchestration layer tailored to your needs with full transparency and smooth integration. Best regards, Nam
$699 USD trong 5 ngày
5,2
5,2

Hello! I am a Florida-based senior software engineer with extensive experience in building secure payment solutions. I carefully read your project description and have a solid understanding of your needs for a single orchestration layer to process Visa, Mastercard, and American Express transactions. With over 15 years in the industry, I specialize in mobile app development, API integration, and security. I’ve developed similar systems that ensure reliable payment processing and user security. For instance, I worked on a payment orchestration system for a niche e-commerce platform and helped implement secure transaction flows for a mobile app that streamlined payment processes for users. Could you please clarify the following questions to help me better understand the project? 1. What specific security requirements do you have in mind for the payment orchestration layer? 2. Are there any existing systems or APIs that this layer needs to integrate with? To ensure success, I propose a phased approach: 1. Requirement gathering and architecture design 2. Development of the orchestration layer 3. Testing and security audits 4. Deployment and monitoring I am confident that my attention to detail and commitment to delivering quality solutions make me the right fit for your project. Let’s chat further to discuss how I can help bring this project to life! -James
$700 USD trong 3 ngày
5,3
5,3

Hello there, Your requirement for a unified, secure payment orchestration layer is clear, and I have experience building gateway style systems with tokenisation, routing, and multi currency support. I propose building the orchestration layer using Node.js with a modular architecture. It will expose clean REST endpoints for authorise, capture, refund, and void operations. The system will sit between your apps and multiple acquirers, handling routing logic and failover automatically. Features - * Smart routing with primary and fallback acquirers * Multi currency support with proper handling of currency codes and FX parameters * Webhooks for real time transaction updates * Detailed logging with export capability for audits and tracking Integration - The system will be easily consumable by your React, Swift, and Kotlin apps via REST APIs. I will provide a complete Postman collection and clear documentation for quick integration. Ready to start and discuss acquirer integrations in detail. Thanks Saurabh
$700 USD trong 10 ngày
5,3
5,3

Hello, I understand the importance of having a secure card payment orchestration system that can process Visa, Mastercard, and American Express transactions seamlessly for both web checkout and native mobile apps. The solution needs to prioritize strong data encryption, support multiple currencies, and have built-in tokenization to ensure customer data security. My approach involves developing a self-hosted or cloud-deployable gateway with REST/JSON endpoints for essential operations, configurable routing logic, detailed logs, and webhooks for real-time updates. I will provide full technical documentation, a Postman collection for easy integration, and automated tests to cover various scenarios. I am ready to start immediately and would like to discuss the specifics of the project further to ensure alignment with your requirements and expectations. Best regards, Justin
$700 USD trong 7 ngày
5,0
5,0

Hi, I can build your secure multi-currency payment orchestration layer with tokenization, routing/fallback logic, REST APIs, and full logging/webhooks using a scalable stack like Node.js. I have experience with payment systems and can deliver a compliant, well-documented solution. Best regards, Shakila Naz
$700 USD trong 7 ngày
5,2
5,2

Hi, I can build you a secure, scalable payment gateway for Visa, Mastercard, and Amex transactions. It’ll support multiple currencies, use tokenisation, and handle routing to different acquirers. I’ll provide a simple API for your web and mobile apps, plus all the documentation and deployment steps you’ll need. Let me know what tech stack you prefer (Node, Go, etc.), and we can get started! Best, Mughiraa
$700 USD trong 7 ngày
4,9
4,9

Hello, I’ve reviewed your need for a unified orchestration layer that securely processes Visa, Mastercard and Amex across both web checkout and native apps. The requirement for multi‑currency support and end‑to‑end encryption aligns closely with payment platforms I’ve previously built, including a gateway where I delivered tokenisation and acquirer‑fallback routing that reduced failed transactions by over 18%. I see the real challenge being consistent encryption and token flows across multiple client environments while ensuring the routing logic remains deterministic under load. Missing this usually leads to unpredictable declines or mismatched amounts when FX rules are applied. I will design a self‑hosted or cloud‑deployable gateway in Node or Go, implement REST/JSON endpoints for authorise/capture/refund/void, embed tokenisation, and add acquirer‑routing with clear rule sets. I’ll produce full documentation, a Postman collection, and automated tests validating authorisation, settlement and common declines. To keep integration clean, I’ll isolate all crypto utilities, document payload schemas, and provide deployment scripts that run from a fresh environment without manual edits. Sincerely, John allen.
$699 USD trong 7 ngày
4,6
4,6

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