Miguel Mendoza Chourio Senior Full-Stack Engineer
"Milliseconds matter. From Venezuela to the world."
9+ years transforming FinTech with scalable architectures. Specialist in Node.js, React Native and high-volume payment systems. Available for international remote opportunities.
9+ Years
Years of experience
50+ Projects
Completed projects
10+ Countries
Countries impacted
1M+ Transactions
Transactions
● Microservices Architect
● FinTech Specialist
● React Native Tech Lead
● API Optimization Expert
React / Next.js
Node.js / NestJS
React Native / Expo
Go / Python
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Featured Projects
Faciliscan™
Mobile audit system with geolocation tracking, push notifications, and real-time reporting.
React Native Geolocation Push Notifications
Balance
$1,250.00
Card Number
•••• •••• •••• 4242
E-Wallet Solution
Comprehensive e-wallet system with multiple payment gateways, transaction management, and user accounts.
React Node.js Stripe/Mercadopago
Frontend
API Gateway
Providers
Auth Service
Transaction Service
Reports Service
Database Layer
Recharge System
Microservice architecture for processing mobile and service recharges with multiple provider integrations.
Go NestJS Microservices
Technical Skills
Professional Experience
Frequently Asked Questions
My development process follows industry best practices including requirement gathering, planning, design, development, testing, deployment, and maintenance. I emphasize collaboration throughout the process with regular updates and checkpoints to ensure the final product meets all your requirements.
The timeline varies depending on project complexity, requirements, and scope. A simple website might take 2-4 weeks, while complex applications with custom features could take 2-6 months. During our initial consultation, I'll provide a more accurate timeline based on your specific needs.
Yes, as a fullstack developer, I handle both frontend and backend development. I work with modern frontend frameworks like React and Next.js for responsive, interactive user interfaces, and robust backend technologies like Node.js and Go for secure, scalable server-side applications.
I have extensive experience in fintech application development, including payment gateways, digital wallets, secure transaction processing, and financial management systems. I'm well-versed in implementing strict security measures, regulatory compliance (including PCI DSS), and creating reliable financial software architecture.
Security is paramount in financial applications. I implement multiple layers of protection including encryption for data at rest and in transit, secure authentication systems, role-based access control, input validation, protection against common vulnerabilities (OWASP Top 10), regular security audits, and secure coding practices throughout development.
Yes, I have experience integrating with numerous payment processors (Stripe, PayPal, Square) and financial systems. I can develop custom APIs or leverage existing SDKs to create seamless connections between your application and financial service providers while maintaining security and reliability.
For mobile applications, I primarily use React Native for cross-platform development, allowing for efficient development of apps that work on both iOS and Android. For more platform-specific requirements, I can also work with Swift for iOS or Kotlin for Android native development.
I offer ongoing maintenance packages that include regular updates, bug fixes, security patches, performance optimization, and feature enhancements. I believe in building long-term relationships with clients to ensure your application continues to evolve and remain secure as technology advances.