Cross-Border Payment FinTech MVP Developer -- 2

@infowider11

(❁´◡❁) FinTech MVP – Cross-Border Payment App (❁´◡❁) Hello, How are you? I’ve gone through your JOB POST and understand you need a secure, lightweight MVP mobile app for cross-border payments with core features like authentication, wallet flow, payment integration, and transaction tracking within a tight budget and timeline. Features: • Mobile app (Flutter for fast cross-platform MVP) • User authentication (email/phone login) • Wallet/payment flow + transaction history • Payment API integration (Flutterwave/Paystack/PayPal) • Simple backend (Firebase/Supabase) with secure logic Answers: • Experience: Built payment-integrated apps with Stripe/Paystack & wallet logic • Recommended API: Flutterwave (best for cross-border in MVP, wide coverage, easy integration) • Tech Stack: Flutter + Firebase (Auth, Firestore, Functions) • Timeline: 2–3 weeks MVP delivery • Yes, I can work within your $500–$1000 budget range Let’s chat… Thanks

@diektech

Hi, This is Elias from Miami. I checked your project description and understand you’re looking to develop a mobile app for cross-border payment processing. The goal is to create an MVP that facilitates seamless transactions for users across different countries. I’ve worked on several similar platforms and understand the key technical challenges involved. For this project, I’d approach it by leveraging React Native for a smooth user experience and Node.js for scalable backend services. I have a few questions to get a better understanding: Q1 – What specific user roles do you envision for this app? Q2 – Are there any existing payment systems or APIs you plan to integrate? Q3 – What features are you prioritizing for the MVP to ensure it meets user needs? I’d be happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.

@corpmember29

HELLO, I HAVE WORKED ON FINTECH AND PAYMENT INTEGRATION PROJECTS AND CAN SHARE RELEVANT EXAMPLES. I HAVE 10+ YEARS OF EXPERIENCE IN MOBILE DEVELOPMENT AND PAYMENT SYSTEMS. I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. WE WILL WORK WITH AGILE METHODOLOGY AND PROVIDE ASSISTANCE FROM INITIAL SETUP TO FINAL DELIVERY. I recommend using React Native + Firebase (Auth/Firestore) + Node.js (light API layer) for fast MVP delivery. For payments, Flutterwave or Paystack are ideal due to strong cross-border support, simple APIs, and faster integration for MVP use cases. The app will include secure authentication, wallet/payment flow, transaction history, and basic backend logic with clean, scalable architecture. I will follow best practices for security and API handling while keeping the solution cost-efficient. ++++++Service Guarantee++++++ ➥ Designed app Android iOS admin panel. ➥ Optimized code and well commented on use for future. ➥ All the latest code to support all versions of Android and iOS phone devices. ➥ Launched the app on Google Play Store as well as Apple App Store. ➥ Setup servers, hosting your app and create a database. I eagerly await your positive response. Thanks.

@n2rtechnologies

Hi there, I reviewed your cross-border payment MVP and it's exactly the kind of fintech project we've built many times. I noticed you're looking at mobile-first for this — that's smart for payment apps where UX is everything. I have a couple of quick questions about your tech stack preference and timeline that'll help me scope this properly. Let's chat through the details. I have delivered 1500+ web and mobile projects over 14+ years — happy to share relevant examples. Thanks, Hasan

@softsolution2000

I have extensive experience in developing FinTech and payment apps, utilizing Flutter for frontend and Firebase for backend. For payment APIs, I recommend using Flutterwave due to its robust features and reliability. My estimated delivery timeline for the MVP is within 2-3 weeks. You can view my past similar work on my GitHub profile. I can definitely work within your $1000 budget. Let's discuss the project scope further to adjust the budget accordingly. Please go through my profile its 15 years old see the work I did over the years. No Win No Fee means that your satisfaction is my utmost priority. Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you.

@kamran2012

Good to see this project, I will build your cross-border payment MVP in Flutter — user auth, wallet screen, payment API integration, transaction history, and a Firebase backend to tie it all together. I recommend Flutterwave as the primary payment API — it supports multi-currency payouts across Africa, Europe, and North America with a single integration, and their sandbox is well-documented for fast MVP iteration. I will structure the transaction logic so swapping in a second provider like Paystack later requires minimal refactoring. Estimated delivery: 3 weeks with milestone-based releases matching your structure. Questions: 1) Which specific corridors (country-to-country) will the MVP need to demonstrate — this determines which payment API covers your routes best? Looking forward to potentially working together. Thanks, Kamran

@ZohaibRoy

⭐⭐⭐⭐⭐ Build Your FinTech MVP App for Cross-Border Payments Efficiently ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project needs and see you're looking for a mobile app developer for a FinTech MVP. You don't need to look any further; Zohaib is here to help you! My team has completed over 50 similar projects in mobile app development. I will create a secure and functional prototype that demonstrates payment flow and core logic efficiently. ➡️ Why Me? I can easily build your FinTech MVP app as I have 5 years of experience in mobile app development, focusing on cross-border payment solutions. My skills include Flutter, React Native, payment API integration, and user authentication. Additionally, I have a strong grip on backend technologies like Firebase and Node.js. ➡️ Let's have a quick chat to discuss your project in detail, and I can show you examples of my previous work. Looking forward to chatting with you! ➡️ Skills & Experience: ✅ Mobile App Development ✅ Flutter ✅ React Native ✅ Payment API Integration ✅ User Authentication ✅ Cross-Border Transactions ✅ Transaction History Management ✅ Firebase ✅ Node.js ✅ REST API Development ✅ Basic Security Practices ✅ GitHub Portfolio Waiting for your response! Best Regards, Zohaib

@Hammadhassan21

“FinTech MVP – Cross-Border Payment App” Hi, I can build a secure FinTech MVP mobile app for cross border payments using Flutter or React Native with user authentication by email or phone, wallet and payment screen, integration of APIs like Paystack Flutterwave PayPal or Eversend, transaction history, basic admin backend using Firebase or REST API, and strong security practices, all delivered within your budget and timeline with milestone based progress. I focused on building MVP level products fast and clean so clients can test real user flows early. I am familiar with payment gateways like Paystack and Flutterwave and understand how to design simple wallet systems and transaction history screens that are easy to scale later. I always communicate clearly, suggest cost effective technical choices, and deliver working prototypes that can grow into full production systems. I will focus on building a working and secure MVP first so you can quickly validate your idea in the market and I am comfortable working within your budget and can also support future scaling like admin panel compliance and app store launch. Please check out my profile to review my past projects and portfolio. https://www.freelancer.com/u/Hammadhassan21 If you find my offer satisfactory, we will be happy to discuss your project in detail. Thanks.

@AITSoft

Hello, I understand you need a simple but secure MVP mobile app for cross-border payments, focusing on core flows like user auth, wallet handling, and payment API integration. My plan is to develop the app using Flutter for smooth cross-platform performance and Firebase for backend to keep it light yet functional. I'll integrate reliable payment APIs like Paystack or Flutterwave for proven cross-border support. My approach will be practical, ensuring the MVP clearly shows the basic payment flow, transaction history, and simple admin features without diving into complex regulations or full banking compliance at this stage. I’ll deliver the project within 3 weeks, fully tested and ready to expand in future phases. Which payment APIs would you like prioritized for integration, and do you have existing merchant accounts for them? Thanks,

@teodorgeorge

Hello, I can develop your FinTech MVP mobile app using Flutter or React Native, integrating APIs like Paystack or Flutterwave for seamless cross-border payments. My approach focuses on building a secure, functional app with user authentication, transaction history, and lightweight backend on Firebase or Node.js as needed. I have experience with payment app development and recommend Paystack for its robust API and ease of integration in cross-border contexts. I can provide a cost-effective solution that meets your requirements clearly and securely. Thanks, Teo

@extreamcode

Hi there, I’ve read your MVP brief for a cross-border payment app and I’m confident I can deliver a secure, functional prototype within 2-4 weeks using a lean, scalable stack. I’ve built FinTech apps before, including wallet flows, basic KYC-lite auth, and multi-API payment integrations. My approach: choose a robust cross-platform framework (Flutter or React Native), Firebase for auth/database, and a minimal REST layer to integrate Eversend, Flutterwave, Paystack, and PayPal. This keeps the MVP lean while demonstrating end-to-end payment flow, transaction history, and admin/back-end basics. I’ll handle: - Mobile app with email/phone sign-in and a wallet screen - Secure payment API integrations and basic cross-border logic - Transaction history and a simple admin backend (Firebase or REST API) - Core security best practices and error handling 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. Here are 3 project-specific questions to help tailor your MVP: 1) Do you have a preferred payment API(s) priority list for cross-border routes? 2) Are there any jurisdictional constraints or regions we must support first? 3) Do you want the admin backend to include real-time transaction monitoring or simple batch reporting? Best regards, Asad

@Herculesz

Hi I have experience building payment-enabled mobile apps and MVP systems where the goal is to validate the flow quickly while keeping security and scalability in mind. The main technical challenge here is integrating cross-border payments in a stable way while handling different currencies, API reliability, and transaction tracking without overcomplicating the MVP. I would solve this by using Flutter for a single clean codebase and Firebase for backend/auth, combined with a reliable payment provider like Flutterwave or Paystack depending on your target regions, since they handle cross-border flows more smoothly than basic gateways. I have worked with mobile apps, payment APIs, Firebase/Node backends, transaction flows, and secure auth systems, focusing on fast MVP delivery without cutting critical corners. My approach would be to build a simple but solid flow: user auth -> wallet/payment screen -> API-based transaction -> history tracking, all with proper error handling and logging so the system behaves predictably. I would also keep the architecture clean so you can later expand into full compliance, admin panels, and scaling without rebuilding. Suggested stack: Flutter (frontend), Firebase (auth + DB + functions), Flutterwave/Paystack (payments). I can start immediately and work within your budget range for an MVP-focused scope. Thanks, Hercules

@XanvraTECH

Hello, I have a deep-rooted understanding of full-stack web development using React, Angular, and Vue.js, and I am adept at creating intuitive UI/UX designs that promote user engagement. On top of this, my expertise with Flutter and React Native dovetails nicely with your app's mobile needs. Payment APIs can be a minefield; fortunately, I’m well-versed in their integration. Based on your requirements and the need for scalable architecture, I recommend leveraging PayPal for its global reach and ability to handle cross-border transactions. In terms of technology stack, in line with your preferences for secure backend infrastructure, I would suggest Firebase or Node.js over Laravel or Supabase keeping cost-effectiveness in mind. My multi-faceted skillset also includes database management that runs the gamut from SQL to MongoDB to Firebase - facilitating well-rounded development work on all fronts. Lets Connect

@Srashtasoft

Hi there, I have read your project requirement. You need a mobile MVP FinTech application for cross-border payments with core features like authentication, wallet/payment flow, transaction history, and integration with reliable payment APIs, built quickly and cost-effectively. We can develop a clean MVP using Flutter with Firebase/Supabase backend, integrate secure payment APIs, and deliver a functional prototype within your timeline. A few questions: =============== Which countries/currencies should be supported in the MVP phase? Do you want real transactions or sandbox/demo mode for testing? Should the wallet hold a balance or only act as a payment gateway interface? Any preferred payment provider among Paystack, Flutterwave, or PayPal? Best Regards, Srashtasoft Team

@taimoorkhan311

Hello, With 4 years of experience in Mobile App Development, specializing in React Native and Node.js, I am well-equipped to handle your Cross-Border Payment FinTech MVP project. I understand the requirements and am confident in delivering a secure prototype that showcases the payment flow and core logic as outlined in the job description. I have expertise in JavaScript, Mobile App Development, Node.js, and various payment APIs like Eversend, PayPal, and Flutterwave. I am ready to discuss the project further and explore how we can achieve your goals. Please connect in chat for a detailed conversation. Best regards, Taimoor from Pixels Soft Let's connect in the chat for further discussion.

@mahig47

Hello! As per your project post, you’re looking to build a Cross Border Payment FinTech MVP Application that demonstrates secure payment flow, wallet functionality, and basic transaction logic using modern mobile and backend technologies. The goal is to create a functional and secure MVP that showcases cross border payment processing, user authentication, transaction tracking, and payment API integration without building a full banking system at this stage. My focus will be on delivering a structured FinTech MVP, featuring: cross platform mobile app using Flutter or React Native, user authentication with email or phone login, wallet and payment interface with cross border transaction flow, payment API integration such as PayPal, Flutterwave, Paystack, or Eversend, transaction history and tracking system, and lightweight backend using Firebase, Node, Laravel, or Supabase. I specialize in FinTech MVP development, cross platform mobile applications, payment gateway integrations, and secure backend systems with focus on performance, reliability, and scalable architecture. My focus will be on building a clean and functional MVP that clearly demonstrates payment flow and core financial logic for future development and investment readiness. Let’s connect to review the payment flow, supported regions, and MVP priorities so we can define the development roadmap and timeline. Best regards, Nikita Gupta

@royalwebraisers

Hi, As per my understanding: you need a mobile MVP for cross-border payments with basic auth, wallet flow, API integration, and transaction tracking within a lean budget. I will share my portfolio on your first message. Implementation Approach: • Use React Native with Firebase for fast MVP delivery • Integrate Paystack/Flutterwave for cross-border flow • Build wallet, transactions, and API layer • Ensure basic security and testing Queries: • Preferred payment API among listed options? • Any specific regions/currencies to support? • Confirm 4 weeks timeline feasibility? I will be looking forward to hearing from you. Kindest Regards

@DeveloperStation

Hi, I’ve developed multiple MVPs for startups, including a FinTech product that connects businesses with accountants for tax filing. We integrated multiple payment gateways and implemented KYC workflows, so I understand the importance of security and compliance in such products. For your MVP, I recommend using Flutter for the front end and Laravel for the back end. This combination allows us to build a fully responsive web app alongside the mobile app, saving time and cost. We can also use a single codebase for both iOS and Android, which is more efficient than using React Native. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. I’m eager to learn more about your exciting project. Best regards, Adil

@Curveballsol

Hello, I am confident in building the MVP FinTech app you need to support cross-border payment processing. As a Flutter and React Native proficient, I can deliver prompt and dependable functionalities within your preferred tech stack. The pathways I've forged in the world of app development have rewarded me with an understanding of the relevance in enacting basic security best practices even at MVP stages. Notably, my depthof expertise includes password and biometric authentication, payment integrations, and transactions tracking in similar scenarios as yours. While my experience may not include advanced compliance work (PCI; full KYC automation), my strong communication skills makes it easier for me to vet third-party protocols require for your project such as Firebase or basic REST API. Regarding your budget constraints, I understand that's it's often challenging to find comprehensive solutions on such tight budgets but my solid knowledge of cost-effective technical solutions coupled with my ability to manage projects effectively will ensure that we squeeze maximum value from each stage of its development while meeting your deadline. Lets Chat