Node.js backend development and security services
Node.js powers the backend of most AI-generated full-stack apps. Express, Fastify, and custom server setups are common - each with their own security and deployment considerations.
Common Node.js issues we find
Real problems from Node.js codebases we've reviewed.
No input validation
Request bodies and query parameters accepted without validation, enabling injection attacks and unexpected data types.
Missing rate limiting
No rate limiting on auth endpoints, API routes, or resource-intensive operations, enabling brute-force and DoS attacks.
Unhandled async errors
Unhandled promise rejections crash the Node.js process in production, taking the entire server down.
Memory leaks
Event listeners not cleaned up, growing arrays/maps, and unclosed connections that gradually consume all available memory.
SQL/NoSQL injection
String concatenation in database queries instead of parameterized queries or ORM methods.
Synchronous blocking operations
File reads, crypto operations, or data processing on the main thread blocking all other requests.
Missing graceful shutdown
Server process killed without draining connections or completing in-flight requests, causing data loss.
No process management
Running Node.js directly without PM2, cluster mode, or container orchestration - a single crash takes down the service.
Node.js production checklist
Key checks before deploying your Node.js app.
Input validation on all endpoints (zod, joi, or similar)
Rate limiting on authentication and sensitive endpoints
Parameterized database queries (no string concatenation)
Global unhandled rejection and exception handlers
Graceful shutdown handling (SIGTERM/SIGINT)
Process manager or container orchestration
Health check endpoint
Structured logging (not console.log)
Connection pooling for database clients
CORS configured for specific origins (not wildcard)
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Our Node.js services
Security Review
Deep security analysis of your application - from API endpoints to database access.
Deploy & Ship
From local development to production deployment.
Performance
Identify and fix performance bottlenecks - slow page loads, laggy interactions, and expensive operations.
Infrastructure
Databases, APIs, auth systems, email, file storage - the backend services that power your application.
AI tools that generate Node.js code
Start with a self-serve audit
Get a professional review of your Node.js project at a fixed price.
Security Review
Automated Security Scan
AI-powered analysis of your codebase. Get a detailed report with prioritized findings within 24 hours.
Get StartedSecurity Review
Manual Security Review
Expert engineer works on your project directly. Fixed scope, fixed price, no surprises.
Get a QuoteSecurity Review
Full Pentest
Enterprise-grade engagement tailored to your needs. Dedicated engineer, ongoing support.
Fix Bugs
Code Audit
AI-powered analysis of your codebase. Get a detailed report with prioritized findings within 24 hours.
Get StartedFix Bugs
Bug Fixing
Expert engineer works on your project directly. Fixed scope, fixed price, no surprises.
Get a QuoteFix Bugs
Ongoing Support
Enterprise-grade engagement tailored to your needs. Dedicated engineer, ongoing support.
Refactor Code
Code Audit
AI-powered analysis of your codebase. Get a detailed report with prioritized findings within 24 hours.
Get StartedRefactor Code
Refactoring
Expert engineer works on your project directly. Fixed scope, fixed price, no surprises.
Get a QuoteRefactor Code
Full Rewrite
Enterprise-grade engagement tailored to your needs. Dedicated engineer, ongoing support.
100% of your audit purchase is 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
Is my Node.js backend secure?
AI-generated Node.js backends consistently lack input validation, rate limiting, and proper error handling. A security review is essential before exposing it to real users.
How do I deploy a Node.js backend?
Options include Railway, Render, AWS, and Vercel (for serverless). We choose the right platform for your needs and handle the full deployment including process management and monitoring.
Can you optimize my Node.js API?
Yes. We optimize database queries, add caching, fix memory leaks, and ensure proper async handling - often seeing 5-10x improvements in response times.
Should I use Express, Fastify, or something else?
Express is fine for most apps. Fastify is faster for high-throughput APIs. Next.js API routes work great for full-stack apps. We recommend based on your specific needs.
Related resources
Guides
Need help with your Node.js project?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.