Building a fintech app with Remix? Let us review it.
Expert code review for fintech apps built with Remix. We fix Remix-specific security gaps, optimize performance, and handle deployment. From $19.
Common Remix issues we find
Real problems from Remix codebases we've reviewed.
Unprotected action functions
Remix action functions that modify data without verifying user authentication or authorization, allowing anyone to submit forms programmatically.
Missing error boundaries
No ErrorBoundary or CatchBoundary exports in routes, causing unhandled loader/action errors to crash the entire page.
Loader data over-fetching
Loaders returning entire database records to the client instead of selecting only the fields needed for rendering, leaking sensitive data.
Missing server-side form validation
Actions that trust client-side validation without re-validating on the server, allowing malformed or malicious data submissions.
Fintech App challenges to solve
Key fintech app concerns that AI-generated code often misses.
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.
What we check
Key areas we review for Remix fintech app projects.
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
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Start with a self-serve audit
Get a professional review of your Remix fintech app project at a fixed price.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code 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.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Can you review a fintech app built with Remix?
Yes. We regularly audit Remix fintech app projects and understand the specific patterns and pitfalls of this combination. Our review covers security, performance, and deployment readiness.
What issues do you find in Remix fintech apps?
Common issues include unprotected action functions and missing error boundaries on the Remix side, combined with fintech app-specific concerns like data encryption and storage and transaction integrity. We check for all of these and more.
How do I make my Remix fintech app production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For Remix fintech app projects, the typical path is: fix security gaps, address fintech app-specific requirements, optimize Remix performance, then configure deployment. We provide a fixed quote after the audit.
How long does it take to audit a Remix fintech app?
Our code audit delivers a full report within 24 hours. For Remix fintech app projects, we check security, architecture, performance, and deployment readiness across all Remix-specific patterns. Fixes are scoped separately with a fixed quote.
Related resources
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