Crypto, Card and Pix Payment Gateway
Budget: $30 – $250 USD
Project Request: Payment Gateway
1. Project Objective
Develop a payment gateway that supports major traditional payment methods, such as credit and debit cards, in addition to offering support for payments via Pix and Bitcoin.
2. System Requirements
2.1. Main Features
Processing payments via credit and debit cards (Visa, Mastercard, Elo, Amex, etc.).
Integration with banking systems for Pix support.
Support for Bitcoin payments, with an optional automatic conversion to fiat currency.
RESTful API to facilitate integration with other platforms and services.
Dashboard for transaction monitoring and financial management.
Support for recurring payments (subscriptions).
Generation of bank slips (boletos).
2.2. Technical Requirements
Backend: Preferably in Node.js or another scalable technology.
Database: PostgreSQL or MongoDB.
Frontend: React.js (if an administrative panel is required).
Integration with traditional gateways such as Stripe, PayPal, and national acquirers (Cielo, Rede, PagSeguro, etc.).
Use of WebSockets for real-time payment status updates.
API with JWT authentication for security.
Logging and auditing for transaction control.
Encryption of sensitive data.
Implementation of a basic anti-fraud system.
3. Payment Flow
3.1. Credit and Debit Card
Customer enters card details.
Gateway validates the details and processes the transaction via the acquirer.
Approval/rejection response.
Transaction is recorded, and the customer is notified.
3.2. Pix
Customer selects Pix as the payment method.
System generates a dynamic QR Code.
Customer completes the payment using their banking app.
Instant confirmation via bank API.
Transaction is recorded, and the customer is notified.
3.3. Bitcoin
Customer chooses to pay in Bitcoin.
System generates a unique wallet address for the transaction.
Customer transfers the amount.
Transaction confirmation via blockchain.
Option for automatic conversion to fiat currency.
Transaction is recorded, and the customer is notified.
4. Security
Use of 3D Secure for transaction authentication.
Encryption of sensitive data (AES-256 for storage and TLS for transmission).
Monitoring of suspicious transactions.
Chargeback prevention system.
5. Performance Requirements
Request response time under 2 seconds.
Support for horizontal scalability.
Minimal latency in Pix and Bitcoin transactions.
6. Final Considerations
The gateway should be modular and allow future integration with other payment methods.
It must comply with all regulatory standards set by the Central Bank of Brazil and GDPR.
API documentation must be clear and objective, enabling third-party integration.
1. Project Objective
Develop a payment gateway that supports major traditional payment methods, such as credit and debit cards, in addition to offering support for payments via Pix and Bitcoin.
2. System Requirements
2.1. Main Features
Processing payments via credit and debit cards (Visa, Mastercard, Elo, Amex, etc.).
Integration with banking systems for Pix support.
Support for Bitcoin payments, with an optional automatic conversion to fiat currency.
RESTful API to facilitate integration with other platforms and services.
Dashboard for transaction monitoring and financial management.
Support for recurring payments (subscriptions).
Generation of bank slips (boletos).
2.2. Technical Requirements
Backend: Preferably in Node.js or another scalable technology.
Database: PostgreSQL or MongoDB.
Frontend: React.js (if an administrative panel is required).
Integration with traditional gateways such as Stripe, PayPal, and national acquirers (Cielo, Rede, PagSeguro, etc.).
Use of WebSockets for real-time payment status updates.
API with JWT authentication for security.
Logging and auditing for transaction control.
Encryption of sensitive data.
Implementation of a basic anti-fraud system.
3. Payment Flow
3.1. Credit and Debit Card
Customer enters card details.
Gateway validates the details and processes the transaction via the acquirer.
Approval/rejection response.
Transaction is recorded, and the customer is notified.
3.2. Pix
Customer selects Pix as the payment method.
System generates a dynamic QR Code.
Customer completes the payment using their banking app.
Instant confirmation via bank API.
Transaction is recorded, and the customer is notified.
3.3. Bitcoin
Customer chooses to pay in Bitcoin.
System generates a unique wallet address for the transaction.
Customer transfers the amount.
Transaction confirmation via blockchain.
Option for automatic conversion to fiat currency.
Transaction is recorded, and the customer is notified.
4. Security
Use of 3D Secure for transaction authentication.
Encryption of sensitive data (AES-256 for storage and TLS for transmission).
Monitoring of suspicious transactions.
Chargeback prevention system.
5. Performance Requirements
Request response time under 2 seconds.
Support for horizontal scalability.
Minimal latency in Pix and Bitcoin transactions.
6. Final Considerations
The gateway should be modular and allow future integration with other payment methods.
It must comply with all regulatory standards set by the Central Bank of Brazil and GDPR.
API documentation must be clear and objective, enabling third-party integration.