Ship your AI-built fintech app with the security it demands
Security hardening, compliance review, and production services for financial technology applications built with AI coding tools.
Financial apps handle the most sensitive data there is — bank accounts, transactions, and personal financial information. A single security flaw can mean stolen funds, regulatory penalties, or permanent loss of user trust. AI tools can prototype a budgeting dashboard or invoicing system quickly, but the compliance, encryption, and audit requirements for financial software are far beyond what any AI tool generates out of the box.
Fintech App challenges we solve
The most common issues in AI-built fintech app projects.
Data encryption and storage
Financial data must be encrypted at rest and in transit. Account numbers, transaction histories, and personally identifiable financial information need field-level encryption, not just HTTPS. AI tools store financial data in plain text in the database, which is a compliance violation waiting to happen.
Transaction integrity
Financial transactions must be atomic — money debited from one account must be credited to another, with no in-between state where it disappears. AI-generated code doesn't use database transactions, meaning a server crash mid-operation can leave accounts in an inconsistent state.
Audit trail and compliance
Every financial action needs an immutable log — who initiated it, when, what changed, and what the balances were before and after. Regulators require this. AI tools don't generate audit logging, and retrofitting it into an existing codebase is tedious but essential.
Third-party financial API integration
Connecting to Plaid, Stripe, or banking APIs requires handling OAuth flows, webhook verification, idempotency keys, and retry logic for failed calls. AI tools generate the initial API call but miss the error handling and reliability patterns these services require.
Authentication and fraud prevention
Financial apps need multi-factor authentication, session timeout policies, device fingerprinting, and suspicious activity detection. Basic email/password auth from AI tools is nowhere near sufficient for an app that touches people's money.
Number precision and currency handling
JavaScript floating-point math causes rounding errors with money — $0.1 + $0.2 !== $0.3. AI tools use standard floats for currency calculations, which leads to penny discrepancies that compound over time and break reconciliation.
Regulatory awareness
Depending on what your app does, you may need to comply with PCI DSS, SOC 2, KYC/AML requirements, or state money transmitter regulations. AI tools have no awareness of these requirements, and non-compliance can result in fines or forced shutdowns.
What we review
Our fintech app audit covers these critical areas.
Data encryption — field-level encryption for sensitive financial data
Transaction integrity — atomic operations, no partial state changes
Audit logging — immutable records of every financial action
Authentication — MFA, session management, account lockout policies
API security — webhook verification, idempotency, retry logic
Currency handling — integer-based math, no floating-point for money
Input validation — strict validation on all financial inputs and amounts
Rate limiting — abuse prevention on sensitive endpoints
Error handling — failures never leave transactions in inconsistent states
Access control — role-based permissions for financial operations
Services for your fintech app
Security Review
Deep security analysis of your application — from API endpoints to database access.
Testing
Add test coverage to your AI-generated app so you can ship changes with confidence.
Infrastructure
Databases, APIs, auth systems, email, file storage — the backend services that power your application.
Refactor Code
Clean up messy, duplicated, and hard-to-maintain code without breaking what already works.
We work with fintech app apps built with
Start with a self-serve audit
Get a professional review of your fintech app at a fixed price.
Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 checks
- SSL/TLS analysis
- Security headers
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerabilities
- Code quality review
- Dependency audit
- AI pattern analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Get a clear plan
We respond in 24 hours with scope, timeline, and cost.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Can I launch a fintech app built with AI tools?
You can, but it needs significantly more hardening than other app types. The AI-generated code is a strong starting point for UI and basic flows, but financial data handling, transaction integrity, and security need professional review before you process real money. Start with our security audit to understand the specific gaps.
Do I need to worry about compliance for a simple budgeting app?
Yes — even if you don't process payments directly, any app that connects to bank accounts (via Plaid or similar) or stores financial data has compliance obligations. Data encryption, privacy policies, and secure data handling are the minimum. If you process payments, the requirements expand significantly.
How do I handle money calculations without rounding errors?
Store and calculate all monetary values in the smallest unit (cents, not dollars) as integers. $19.99 becomes 1999. This eliminates floating-point errors entirely. Display formatting happens at the UI layer only. We refactor AI-generated currency handling to use this pattern.
Other use cases
SaaS App
Professional code review, security hardening, and deployment services for SaaS applications built with AI coding tools.
Marketplace
Code review and production services for two-sided marketplaces built with AI tools.
E-Commerce Store
Production services for e-commerce applications built with AI tools.
MVP / Prototype
Bridge the gap between AI-generated prototype and production-ready MVP.
Building a fintech app?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.