Payments & Security

Bank and Payment Integrations: Plaid API and Stripe

For enhanced bank synchronization in Premium tiers, Plaid API is utilized, providing secure, tokenized access to over 12,000 financial institutions for automatic transaction imports and categorization. Plaid's compliance with ACH and open banking standards, along with its 99.99% uptime, makes it the gold standard for fintech, reducing manual input errors by 80% and enabling real-time analytics.

Stripe handles subscriptions, offering seamless payment processing, fraud detection, and global currency support at a low 2.9% fee rate. Its API-first design integrates effortlessly with Node.js, supporting free trials, upgrades, and downgrades, while webhook events ensure real-time billing updates.

These tools were selected for their proven track record in scaling startups, with Plaid powering apps like Venmo and Stripe processing billions in volume annually.

Security and Performance Layers

Security is embedded throughout, with end-to-end encryption (E2EE) for all financial data using AES-256 standards, HTTPS for transmissions, and pseudonymous wallets to avoid storing PII on-chain. Automated backups and data recovery via cloud services like AWS ensure resilience, while scalable infrastructure on cloud providers supports auto-scaling during traffic surges. This holistic approach not only complies with GDPR and SOC 2 but also builds trust, as breaches could erode user confidence in a finance app.

Finu's technology stack is optimized for speed, security, and innovation, with each component chosen to address specific fintech challenges: Next.js and Node.js for usability, OpenAI and Pinecone for intelligent insights, BNB Chain for affordable Web3, and Plaid/Stripe for reliable integrations.

This architecture positions Finu as a leader, capable of handling exponential growth while delivering a frictionless experience.