Portfolio Pro
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Learning catalog
Start a free project now. Paid plans unlock the rest of the catalog the same day: tracks, specs, and deploys, not a video binge.
Hiring a developer? Send a challenge instead.
E-commerce storefront
A product catalog, a persistent cart, and a checkout flow. One complete build.
156+
Ship-ready projects
297+
Guided lessons
6
Live tracks
$0
To start a project. No card.
Stack you ship in the projects
How it works
Browse free. Sign in to save progress. Pay when you want the full catalog.
Pick a free project and build it end to end. No card, no trial timer.
Real project scope in the app. Optional AI help supports the work; it does not replace it.
Upgrade when you want every track. Refund policy is public. We do not sell placement.
Curriculum
Stack them. Start where you are, and finish with work you can demo in an interview.
Where to start
Match your experience
We'll scroll to a suggested track below. The numbering matches the live curriculum.
Build production data pipelines with Python, dbt, and Airflow. Transform raw data into AI-ready datasets.
Ship AI-powered iOS and Android apps with React Native and on-device ML. Real-time inference without server round-trips.
The difference
Every project has a spec, a deadline mindset, and a deployable result. The kind of work that survives a portfolio review, because it was built like real work.
Real specs
Not step-by-step hand-holding. Every project ships to a URL.
Interview-ready
Built to demo and defend in a review.
The Developer Platform
A preview of the pipeline: code runs against sandbox test suites, streams AI output, and deploys to a live URL.
AI App Execution & Verification Preview
LIVE DEMOFull-Stack Next.js 16 + OpenAI Streaming + Vercel Edge
// 1. Defining the AI Service Route
import { StreamingTextResponse, OpenAIStream } from 'ai'
import { openai } from '@/lib/ai'
export async function POST(req: Request) {
const { messages, tools } = await req.json()
// Verified system prompt with strict schema enforcementStreaming AI Route Handlers
HTTP 200 OK · SSE Token Stream · TTFB < 160ms
Multi-Tenant PostgreSQL RLS
Row Level Security policy blocks unauthenticated queries
Client Optimistic State Rollback
Cart state reconciles without duplicate checkout mutation
Core Web Vitals Performance Gate
LCP < 1.2s · CLS 0.00 · Bundle budget < 100kB
Sample preview. Real submissions run against hidden test suites in an isolated container.
Full-Stack AI Architecture
Dynamic multi-turn tool calling, RAG vector retrieval, and token streaming via SSE.
Stack: OpenAI GPT-4o · Claude 3.5 · Tool Calling
// lib/agent.ts
const stream = await openai.chat.completions.create({
model: 'gpt-4o',
stream: true,
tools: [searchDocsTool, runSqlTool],
})The server counts every test run, file save, and jump in code. Authentic engineering work leaves a distinct, verifiable signature.
No toy sandboxes that disappear. Every project deploys to a custom domain with SSL, edge caching, and real database backing.
Build custom MCP servers, agent evaluation harnesses, and multi-model fallbacks for OpenAI, Anthropic, and open weights.
Ship-ready apps
Complete apps with full source code. Not tutorials. Real things you deploy and show employers.
Ship proof
Compare plans for full catalog access, or try a free project first.
No card to browse · 30-day refund
