Go from
learning to shipping
Production-ready code templates, hands-on courses, and real-world practice problems — built by engineers who ship.
2900+
Lines of production code
40+
Lessons & problems
350+
Practice submissions
4.8★
Average rating
Everything you need to grow
Four pillars that take you from learning to production — all in one place.
Production Systems
Battle-tested code templates ready for deployment. Webhook engines, multi-tenant SaaS, payment pipelines.
Secure Middleware
Auth, rate limiting, request logging, and error handling — composable middleware that works out of the box.
Hands-On Courses
Build real systems from scratch. Architecture decisions, tradeoffs, and patterns used by teams that ship.
AI Tooling
AI-powered SaaS starters with prompt engineering, model routing, and usage-based billing built in.
Learn by building real products
Every template is a production system. Every course builds something you can ship.
Payment & Subscription Billing Engine
Razorpay integration with webhook processing, subscription management, and refund handling.
AI SaaS Starter Kit
Full-stack SaaS with AI model routing, usage metering, and subscription-based access control.
Event-Driven Order Pipeline
Async order processing with queue management, retry policies, and status tracking.
Production code,
ready to ship
Every line follows the patterns used by teams running real SaaS products. No tutorial code. No shortcuts.
Type-safe APIs
End-to-end TypeScript with Zod validation
Result pattern
No thrown errors — explicit success/failure
Rate limiting
Per-endpoint tiers with Upstash Redis
Structured logging
Pino JSON logs with request tracing
// Auth + rate limit in one line
import { withAuth, withRateLimit } from "@/middleware";
import { ok, err } from "@/result";
export const POST = withRateLimit(
withAuth(async (req, ctx, user) => {
const order = await createOrder(user.id);
return order.success
? ok(order.data)
: err(order.error);
}),
RATE_LIMIT.payment
);Foundations
TypeScript, REST APIs, database design
Build a SaaS MVP
Auth, payments, CRUD, deployment
Production Patterns
Queues, webhooks, error handling
System Design
Scaling, caching, multi-tenancy
Ship Your Own
Launch with confidence
Your personalized
learning roadmap
We don't just sell code, we build skills. Each course, problem, and template maps to a progression from fundamentals to production mastery.
Track your progress. Fill knowledge gaps. Ship with confidence.
Explore coursesDevelopers love LevnCode
Priya Sharma
Full-Stack Engineer
“Saved me weeks of boilerplate. The webhook engine template had everything — retry logic, signature verification, idempotency keys. I just plugged in my business logic.”
Marcus Chen
Startup Founder
“The courses don't just teach you how to code — they teach you how to think about systems. I rebuilt my entire auth layer after the middleware course.”
Aisha Okafor
Senior Developer
“Practice problems that actually feel like production bugs. The tradeoff problems made me rethink how I approach architecture decisions at work.”
Ready to start shipping?
Join thousands of developers who build with production-grade foundations, learning systems, and battle-tested code.