Crypto Card Portal Integration

@webbookstudio

Hi there, We understand you need a secure client portal for crypto card management, integrated with the UPay API, featuring user authentication, virtual card issuance, and transaction history with robust security measures. Our team at Webbook Studio has experience with similar projects, such as developing a custom PHP solution for an online store with integrated payment systems and building a mobile app for a fintech company using Node.js and React Native. We can deliver a modern, lightweight front-end using a framework like React, ensuring a clean design that matches your brand style. One question: Are there any specific security audit requirements or compliance standards (e.g., PCI-DSS) that we should be aware of during the development process? Feel free to message us to discuss the details! — Webbook Studio

@ahmadayaz

Thank you for considering me for developing a secure client portal integrating with the UPay API on carterafx.io. My proposal includes robust security measures, a modern interface, and a scalable technology stack for backend functionality. The project will be divided into phases for a systematic development process with clear milestones. Pricing will be provided as a fixed quote covering end-to-end development. I have prior experience in fintech and payment integrations, ensuring high-quality results. Post-project completion, comprehensive documentation and a video walkthrough will be provided. Let's collaborate to bring your vision to life efficiently and effectively.

@tangramua

Dear ,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in PHP, JavaScript, Graphic Design, HTML, Node.js, Web Development, API Development, Security Auditing and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details.    Best regards, Sales department Tangram Canada Inc.     

@rahuliitm69

Hi, I’ve carefully read your requirements and can develop a secure, production-ready client portal for CarterAFX with seamless UPay API integration. I’ve already developed similar fintech/payment platforms involving secure authentication, virtual cards, wallet/top-up flows, transaction management, 2FA, and API integrations. Development Plan: • Milestone 1: Architecture, database & secure authentication/2FA • Milestone 2: UPay API integration + virtual card issuance, controls & top-up • Milestone 3: Transaction history, filters, pagination & exports • Milestone 4: Modern responsive UI matching CarterAFX branding • Milestone 5: Security hardening, logging, QA & audit documentation • Milestone 6: Deployment, source code, documentation & video walkthrough I can also provide relevant fintech/payment integration examples privately due to client confidentiality. Two questions: Does UPay provide a sandbox/test environment and test credentials for card issuance/top-ups? Should 2FA be mandatory for login as well as every sensitive card/fund action? I’m ready to start immediately and can build this with scalability and security as core priorities. Thanks Rahul

@sahildogra222

Hey, You are looking for Crypto Card Portal Integration. "Lets Gets Started, I know you have several tempting proposals here, but I guarantee you to be impressed by my work. I have various skills in design, Illustration, Photoshop, Graphic Design, Logo Design and Illustrator. If you give me this chance you will be impressed, because I guarantee that I will meet your expectations. I invite you to get a look at my portfolio You Can see it from here : https://www.freelancer.com/u/sahildogra222 If you have any questions or queries, do not hesitate to contact me. I hope to start working with you. With regards! SAHIL

@techplusintl

Hi, I can build the secure client portal for CarterAFX with a clean, modern interface and a production-ready backend integrated directly with the UPay REST API. I’ll focus on both usability and security, including authentication, 2FA for sensitive actions, virtual card management, top-ups, transaction history, filtering/exporting, encrypted data handling, structured logging, and environment-based configuration. Proposed Milestones Milestone 1 – Architecture & Authentication:** 2–3 days Milestone 2 – UPay Integration:** 4–5 days Milestone 3 – Transactions & Portal:** 3–4 days Milestone 4 – UI & Responsive Polish:** 2–3 days Milestone 5 – Security Review, QA & Handover:** 2–3 days Estimated timeline: 13–18 working days** Fixed price: $3000 USD**, including development, basic QA, documentation and final hand-off. For the frontend, I’d recommend a lightweight React-based implementation where appropriate, while keeping the application fast and avoiding unnecessary dependencies. For the backend, Node.js would be a strong fit for the UPay REST integration and scalable API architecture. The final delivery will include the complete source code, technical documentation, security/audit test scripts, deployment/configuration guidance and a short video walkthrough. I’m happy to review the UPay API requirements and CarterAFX branding first and confirm the implementation approach before development begins.

@gutibs

Hi! This is something we can definitely build. A couple of things before I put together a proper scope and price: On the UPay side — does your account already have API credentials and sandbox access ready, or is that still pending? And are there any card issuance limits or KYC steps on their end that the portal needs to surface to the user? On the front end — you mentioned brand colours and typography are ready, which is great. Do you have any mockups or a design reference for the portal itself, or is the UI direction fully open? For the build, we'd go with a Node.js backend talking directly to the UPay REST endpoints, PostgreSQL for storing transaction logs and user data, and a React or SvelteKit front end — whichever keeps load times tighter. 2FA, encryption at rest and in transit, structured logging and environment-based config are standard practice for us on anything touching payments. The audit hand-off (docs + test scripts) is straightforward to plan into the final milestone. Re: timeline and fixed price — happy to break that into milestones (auth, card flows, transaction history, security review + hand-off) once I know the API access situation, since that's usually the variable that shifts estimates most. On portfolio links — I'll be straight with you: we don't share project URLs publicly without client sign-off, but I can walk you through what we've built and how in conversation. Gustavo & the DoTheCode team

@seefattechnologi

Certainly--------------I believe I will satisfied you by completing this task with high Quality and Accuracy I am highly proficient to work on this project . I am an CREATIVE/Multitalented PHP/Full stack developer having rich experience with all the latest technologies with so many successful Tasks. I have some queries to give you accurate time and price Please ping me to get started and provide you great results. Thanks!!!

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Secure Client Portal with UPay API Integration ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project needs and see you're looking for a secure client portal that integrates with the UPay API. You don’t need to look any further; Zohaib is here to help you! My team has completed over 50 similar projects, ensuring high-quality results. I will create a user-friendly portal where clients can sign up, manage their crypto debit cards, and view transaction history. Security is my top priority, and I will implement two-factor authentication and encryption for all data. ➡️ Why Me? I can easily build your client portal as I have 5 years of experience in web development and API integration. My expertise includes secure coding practices, user authentication, and responsive design. Additionally, I have a strong grip on front-end frameworks and back-end technologies, ensuring a seamless integration with UPay. ➡️ 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 discussing this with you. ➡️ Skills & Experience: ✅ Web Development ✅ API Integration ✅ Security Protocols ✅ User Authentication ✅ Responsive Design ✅ Data Encryption ✅ Front-End Frameworks ✅ Back-End Development ✅ Testing & QA ✅ Transaction Management ✅ Documentation ✅ Client Communication Waiting for your response! Best Regards, Zohaib

@corpmember29

Hello, Crypto Card Portal Integration {{{ I HAVE CREATED SIMILAR BEFORE AND I CAN SHOW YOU }}} I have carefully reviewed your requirements and understand that the goal is to build a secure client portal connected with the UPay API, allowing users to manage virtual crypto debit cards, top up funds, control card status and access transaction history. I have 11+ years of software development experience and can build the complete workflow including secure registration and authentication, credential recovery, virtual card issuance, card details, freeze/unfreeze, termination, top-up and filtered transaction history with export functionality. Security will be a key part of the implementation, including 2FA for sensitive actions, encrypted communication and data, secure API handling, structured logging, audit trails and proper error handling. I will also prepare the documentation and test scripts required for your quarterly security review process. I will keep the portal lightweight, responsive and aligned with your existing CarterAFX branding, while ensuring the codebase is production-ready, configurable across environments and easy to maintain. I will provide the complete source code, documentation, QA, deployment assistance and a short video walkthrough along with 2 years of free ongoing support. I eagerly await your positive response. Thanks, Christina

@onkarkulkarni8

Hi, I your "Crypto Card Portal Integration" project description in detail and undertood your requirements. I've worked on many PHP projects in recent times. So I am confident on achieving your expected Goals. Please initiate a communication thread to discuss further and start with the project. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.

@Hammadhassan21

Hey, I’ve carefully reviewed your project, and I understand you need a secure client portal that integrates directly with UPay while providing a polished experience for crypto card management and transactions. I can help build this with security, reliability, and scalability as core priorities. I will implement secure authentication and 2FA, virtual card issuance and controls, funding/top-ups, filtered transaction history with exports, and clean UPay REST API integration. I’ll also structure logging, encrypted data handling, environment-based configuration, QA, security documentation, and hand-off for ongoing audits. I have hands-on experience with similar projects and would be happy to share relevant examples during our discussion. One quick question: Does UPay provide a sandbox environment and test credentials for validating the complete card lifecycle? Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best Regards, Hammad Hassan

@p4logics

Hello dear sir, I'm an expert in web and mobile development using AngularJS, ReactJS, NodeJS, Python, etc. with strong experience in secure fintech and payment applications. My Technical Skills are as follows:- Frontend: AngularJS, ReactJS, HTML, CSS, JavaScript Backend: NodeJS, Python API Integration: UPay API, Secure API Integration Security: Encryption, Two-Factor Authentication, Secure Data Handling Other: Logging, Error Handling, QA, Security Audits We can develop your secure and modern Crypto Card Portal with features like user login, card issuance, UI improvements and UPay API integration. We can work with fixed pricing, including development, testing and final handover. Please ping me so we can discuss your project in more detail and start immediately. Looking forward! Thanks & Regards

@muskaannadaf

Hello, I'm Asma, Web Developer and Graphic Designer with 10 years of experience working with clients and agencies from around the world. Creative problem solver with a passion for creating visually appealing and user-friendly digital solutions. I love building luxurious brands and designing captivating visual identities. I've worked with clients in lifestyle, property, fashion, hospitality, and luxury sectors. 24/7 Support & Faster Response . #WEBSITE DESIGNING / DEVELOPMENT #WORDPRESS/HTML/JS/CSS/PHP/LARAVEL/SHOPIFY #GRAPHIC DESIGNING #UX/UI #FIGMA #SQUARESPACE #SOCIAL MEDIA MARKETING #PHOTOSHOP/ILLUSTRATOR #GOOGLE ADS #JEWELERY DESIGNER #LOGO DESIGN #BANNER DESIGN #BUSINESS CARD #STATIONARY DESIGN #CD COVER #POWERPOINT PRESENTATION #BOOK COVER #LETTERHEAD DESIGN #3D LOGO #WORDPRESS #WEBSITE PAGE SPEED UP UPTO 95-99 #WEBSITE SEO #FIGMA TO WORDPRESS/HTML/JS/CSS/PHP/LARAVEL #PSD TO WORDPRESS/HTML/JS/CSS/PHP/LARAVEL ...... ETC :)

@webbookstudios

Hi there! I'm Markiyan, a full stack developer and CEO of a web agency, and I'd love to help you build this secure client portal for crypto card management. I understand you need a modern, secure portal integrated with the UPay API, allowing clients to manage their virtual crypto debit cards, transactions, and security settings, all while ensuring top-notch security and scalability. My team and I have experience with similar fintech projects, such as a learning platform website for children and an online shop for a Scandinavian fashion brand, where we handled custom PHP development, WordPress, and secure payment integrations. I can deliver a fully functional, secure, and modern-looking portal that meets your requirements, including two-factor authentication, encryption, and quarterly security audit processes. For the front-end, I suggest using a lightweight framework like React.js to ensure fast load times and a clean interface. One question: Are there any specific UPay API endpoints or requirements that need special attention or customization during the integration process? Feel free to message me to discuss the details! — Markiyan

@zainalitariq245

Greetings, You need a secure client portal integrated with UPay, covering authentication, virtual crypto debit cards, transactions, 2FA, security controls, and a modern UI aligned with carterafx.io. We will build this with: secure authentication, UPay API integration, virtual card management, transaction filtering/exports, 2FA, encrypted data, audit-ready logging, production-ready configuration. A couple of questions before I provide a detailed plan: Does UPay provide sandbox credentials for card issuance, top-ups, and transaction testing? Which 2FA method do you prefer: authenticator app (TOTP), SMS, or email? Portfolio: freelancer.pk/u/zainalitariq245 Based on your requirements, I can suggest the most scalable approach and provide timeline and cost estimate after discussion. Looking forward to discussing the details. Best regards, Zain Ali

@vishal1145

Your UPay integration will fail PCI-DSS compliance if card data touches your server logs or gets cached client-side. Most developers miss this and expose you to regulatory fines before launch. Quick questions - are you planning rate-limit handling for the UPay endpoints since their docs show 100 req/min caps? And do you need webhook listeners for real-time transaction updates or will polling suffice? Here's the architectural approach: - UPAY API: Implement token-based card provisioning with encrypted vault storage so PAN data never persists in application memory or database plaintext. - SECURITY AUDITING: Build automated test harness covering OWASP Top 10 plus quarterly pen-test documentation package including threat model, dependency scan reports, and remediation logs. - 2FA + AUTH: Deploy time-based OTP via Authy/Google Authenticator with backup recovery codes stored using bcrypt, session tokens rotated every 15 minutes, and IP geofencing on card operations. I've built similar fintech portals for two payment processors handling $4M monthly volume without a single breach. Let's schedule a 20-minute technical call to review your compliance requirements before I draft the milestone breakdown.

@krupnovdenis

Hello! We can build you a secure client portal with UPay integration. 1. Do you already have access to the UPay API and test environment? 2. Which feature should we prioritize first: auth, card issuance, or transactions? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!

@waqaswebmaster

I can build the portal around the UPay API with a production-focused architecture covering authentication, 2FA, virtual card issuance and controls, top-ups, transaction history, filtering, exports, and secure account recovery. I’ll keep the API layer isolated and properly structured with environment-based configuration, logging, validation, error handling, encryption, and auditability. Sensitive actions will require 2FA, with security testing and quarterly audit documentation included in the hand-off. I’d structure the build around auth first, then card/API flows, transaction management, UI integration, security review, QA, and deployment. Timeline: 4–6 weeks Fixed price: $4,500 USD Waqas Ahmed