How Senior Engineers Actually Build With AI in 2026 | Build a Full Stack Systems Architecture App

In this video, you will learn how to build a full Duolingo clone in React Native using a workflow called Practical Vibe Coding. AI has turned months of work into a single weekend; allowing you to ship a real apps without writing a single line of code. The app isn't the point; the workflow is. Let’s go. Stream: https://jsm.dev/lingua-stream Vision Agents: https://jsm.dev/lingua-vision Clerk: https://jsm.dev/lingua-clerk PostHog: https://jsm.dev/lingua-posthog CodeRabbit: https://jsm.dev/lingua-coderabbit 🧠 Wanna build like I do? Join my Agentic Course → https://jsm.dev/lingua-ai 📘 Practical Vibe Coding Guide: https://jsm.dev/lingua-ebook 🎁 Video Kit (Code, Assets, Prompts): https://jsm.dev/lingua-kit 🤖 Android Studio/Windows Guide: https://jsm.dev/lingua-android ⭐JSM Pro Courses: https://jsm.dev/lingua-jsm ➤ Links not working? Some regions may need a VPN. https://discord.com/invite/n6EdbFJ https://twitter.com/jsmasterypro https://instagram.com/javascriptmastery https://linkedin.com/company/javascriptmastery Business Inquiries: contact@jsmastery.pro Timestamps: 00:00:00 — Introduction 00:03:07 — Crash Course - AGENTS.md 00:15:13 — Crash Course - When the AI’s Knowledge Ends 00:23:47 — Setup 00:28:37 — AGENTS.md Setup 00:38:01 — Nativewind Setup 00:47:13 — Design Theme 00:58:26 — Onboarding Screen 01:08:58 — Auth Screen 01:15:45 — Clerk 01:27:04 — Content 01:33:27 — Language Screen 01:39:01 — State Management 01:45:16 — Bottom Tab Navigation 01:51:30 — Home UI 02:00:23 — PostHog 02:14:57 — Lesson UI 02:19:55 — Audio Lesson UI 02:25:25 — Stream 02:28:17 — XCode & Android Studio Setup 02:39:35 — Stream Integration 02:47:51 — Vision Agent 02:53:45 — AI Teacher 03:04:56 — AI Teacher Improvements 03:15:29 — Live Captions 03:28:58 — More PostHog 03:38:05 — End

In this course, you’ll master Next.js 16, the latest version of the official React framework, and learn how to build powerful, full-stack applications using its new caching and performance features. You’ll put your skills into practice by creating and deploying a Dev Event Platform, a modern app where users can browse, create, and manage events. PostHog: https://jsm.dev/devevent-posthog WebStorm: https://jsm.dev/devevent-webstorm Junie AI: https://jsm.dev/devevent-junie Warp: https://jsm.dev/devevent-warp CodeRabbit: https://jsm.dev/devevent-coderabbit CodeRabbit CLI: https://jsm.dev/devevent-coderabbitcli Cloudinary: https://jsm.dev/devevent-cloudinary The Complete Testing Course is LIVE. 🔥 Bundle up now before the deal expires and get 33% Off‼ 👉 https://jsm.dev/devevent-testing 📗 GSAP Pro Course (includes GTAVI Website): https://jsm.dev/devevent-gsap 📕 Three.js 3D Pro Course: https://jsm.dev/devevent-threejs 📙 JavaScript Pro Course: https://jsm.dev/devevent-cpjsm 🚀 Launch Your SaaS Pro Course: https://jsm.dev/devevent-saas ‼ If the links aren’t working for you, please try using a VPN (e.g., in Nigeria) 📁 FREE Video Kit (Code, Figma, Assets, Etc.): https://jsm.dev/devevent-kit 👉 Backend Pro Course Waitlist: https://jsm.dev/devevent-backpro 👉 AI Development Pro Course Waitlist: https://jsm.dev/devevent-aipro 👉 Tailwind Pro Course Waitlist: https://jsm.dev/devevent-twpro 👉 React.js Pro Course Waitlist: https://jsm.dev/devevent-reactpro 👉 React Native Pro Course Waitlist: https://jsm.dev/devevent-nativepro Rate us on TrustPilot: https://jsm.dev/trustpilot https://discord.com/invite/n6EdbFJ https://twitter.com/jsmasterypro https://instagram.com/javascriptmastery https://linkedin.com/company/javascriptmastery Business Inquiries: contact@jsmastery.pro Time Stamps: 00:00:00 — Introduction 00:04:09 — Crash Course Intro 00:08:30 — Installation 00:11:45 — Project Structure 00:14:19 — App Router 00:17:16 — React Client & Server Components 00:23:40 — Routing 00:42:42 — Data Fetching 00:48:53 — API Routes 00:52:45 — Caching 00:56:05 — Build Adapters API 00:57:24 — Metadata 01:01:23 — Theory to Practice — — — 01:02:48 — Project Setup 01:18:01 — Homepage 01:41:35 — PostHog Setup 01:50:21 — MongoDB Setup 01:52:57 — Warp Setup 01:56:46 — Database Models & Connection 02:09:36 — CodeRabbit 02:16:11 — API Routes 02:27:03 — Image Upload 02:37:51 — Fetch API Routes 02:54:47 — Event Details Page 03:14:34 — Server Actions 03:28:05 — Caching 03:39:46 — PostHog: Booking Action & Tracking 03:54:05 — Deployment 03:58:15 — Outro

Want an AI Makeover for YOUR Business? 👉🏻 https://bit.ly/aimakeover Follow me on Instagram to see behind the scenes: 🤳🏼 https://instagram.com/liamottley 🛠 MY TECH STACK Hostinger (agent & web hosting): https://hostinger.com/liamvps Hyperagent (AIOS workspace): https://www.hyperagent.com/liam Ospry (AI lead gen): https://www.ospry.ai?fpr=liam41 Glaido (voice transcription): https://get.glaido.com/liam-ottley Firecrawl (web scraping): https://firecrawl.link/liam-ottley Supadata (video scraping): https://supadata.ai/?ref=liam Apify (all other scraping): https://apify.com?fpr=8txghh ElevenLabs (voice agents & cloning): https://try.elevenlabs.io/liam Claude Code (coding): https://claude.com/claude-code Supabase (database): https://supabase.com Some links above are affiliate links. Using them supports the channel at no extra cost. 📚 Get the Figma kit, app prompts, and UI Designer tool & all my AI resources on Skool: https://bit.ly/46Fo98a 📈 Become a Wildly Profitable AI Entrepreneur: https://bit.ly/47iFLGW 🤝 Ready to transform your business with AI? Let's talk: https://bit.ly/4fnpOS0 📋 Get our FREE 14-day playbook for finding high-impact AI opportunities in any business: https://bit.ly/14-day-playbook- In this full course, you’ll master the new skill of Software Composing—building full-stack, revenue-generating web apps using nothing but your ideas and the right prompts. You’ll go from understanding databases and APIs to deploying a real SaaS product with authentication, live data and a real database. No coding experience? No problem. This course was built to help you gain the confidence and competence to turn ideas into income using natural language prompts or 'vibe coding' and the world’s most powerful AI tools like Bolt.new the sponsor of this video. Get started building no-code apps with Bolt now: https://bolt.new/ Timestamps: 0:00 - What We're Covering 2:47 - Chapter 1: Foundations 4:31 - What is Software Composing? 10:46 - What is a Web App? 13:35 - Front End VS Back End 18:48 - Databases: Your Software’s Memory 23:43 - APIs 29:29 - Authentication & Authorization 34:33 - Chapter 2: Building 37:00 - The Software Composing Landscape 41:03 - Build 1: Front End: UI Design & Initial Prompting 56:30 - Build 2: Backend: Databases & API 1:12:21 - Build 3: User Authentication & Authorization 1:30:59 - Deploying your App 1:34:00 - Debugging: Fixing What Breaks 1:37:34 - Chapter 3: Monetizing

An LLM is an incredibly powerful brain that knows everything about humanity and nothing about you or the software you run. This video walks through the four buzzwords that turn that raw brain into a system you can trust: agent harness, loop engineering, LLM Ops, and eval. No jargon, step by step, technical or not. You can build anything. You can learn anything. 💪 Timeline 0:00 Intro: the 4 AI agent buzzwords 0:42 What an AI agent run actually is 1:52 The memory system: procedural, semantic, episodic 3:37 What "harness" really means (the horse) 5:07 Storing and updating memory (databases, skills, summarizer agent) 8:28 Retrieval: RAG, SQL vs semantic search 10:00 Tool calling and why agents loop 10:52 Loop engineering and end-loop guardrails 13:21 A Claude Code hooks example 14:18 Eval and LLM Ops: why you need them 15:55 Tracing every run (Langfuse, LangSmith) 16:43 Evaluation: LLM as a judge 17:20 Diagnosing what broke 18:16 The gate: ship the fix or fix the bug 18:57 Zoom out: the full system 19:53 Wrap up Launch Full-Stack App Template: https://github.com/ShenSeanChen/launch-mvp-stripe-nextjs-supabase My AI Agent Startup AutoManus.io is an AI sales lead manager for made-to-order product sales. We embed directly where conversations happen (WhatsApp, email, web chat) to capture inbound, automate follow‑ups, and kill CRM busywork; live with 4 pilots and 2 contracts in motion, pre‑seed backed by Character VC. Focused on US/UK/Germany, raising to expand engineering and scale deployments. ☕️ Buy me a coffee: https://buy.stripe.com/5kA176bA895ggog4gh - X: https://x.com/ShenSeanChen - Sean's Discord: https://discord.gg/tvECErKcFr - AutoManus Discord: https://discord.gg/5HhcNjCR - LinkedIn: https://linkedin.com/in/shen-sean-chen - Github Link: https://github.com/ShenSeanChen - Instagram: https://www.instagram.com/sean_ai_stories Sub Count when launched: 13,050 Top Github Repos - LaunchMVP NextJS,Supabase,Stripe (1015 stars): https://github.com/ShenSeanChen/launch-mvp-stripe-nextjs-supabase - ReactNextJSTips (114 stars): https://github.com/ShenSeanChen/yt-react-nextjs-tips - DeepResearchAgentBackend (70 stars): https://github.com/ShenSeanChen/yt-DeepResearch-Backend - SupabaseTipsKanban (64 stars): https://github.com/ShenSeanChen/yt-supabase-tips-kanban - RAGVectorDB (56 stars): https://github.com/ShenSeanChen/yt-rag - KimiK2Claude (37 stars): https://github.com/ShenSeanChen/yt-kimi-k2-claude - DeepResearchAgentFrontend (33 stars): https://github.com/ShenSeanChen/yt-DeepResearch-Frontend - AgenticRAG (13 stars): https://github.com/ShenSeanChen/yt-agentic-rag You Can Build Anything Playlist (Full-Stack Dev Without CS Degrees) - Core7: 95% React/NextJS Use Cases https://www.youtube.com/watch?v=vZzFlAjz4rA&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=16 - Core6: 95% Supabase Use Cases https://www.youtube.com/watch?v=Pnoq2tIif3s&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=15 - Core5: StripeNextJSSupabase https://www.youtube.com/watch?v=ad1BxZufer8&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=8 - Core4: AuthSupabaseGoogle https://www.youtube.com/watch?v=AZAU3ClAWWE&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=6 - Core3: FastapiGCPPro https://www.youtube.com/watch?v=u3sfqpzzo-U&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=5 - Core2: SupabaseHero https://www.youtube.com/watch?v=V0kmgkyPsVQ&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=4 - Core1: LaunchAnApp https://www.youtube.com/watch?v=iQ2izvGG4tQ&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=3 - Launch WhereToMeet w/ GoogleMaps, Calendar, Supabase, Cursor: https://www.youtube.com/watch?v=5xMjX1QxGUY&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR&index=2 - Launch EncourageMe w/ Cursor, Supabase, Vercel https://www.youtube.com/watch?v=hnvL4xa2DHA&list=PLE9hy4A7ZTmpGq7GHf5tgGFWh2277AeDR

💻 Source Code: https://cwa.run/nodebase 🎨 Free Assets: https://cwa.run/node-assets 🎥 Part 2: https://youtu.be/S-4DrLHtL1s?si=n4a7jM4FUWf9NN32 📚 Resources: Try Inngest: https://cwa.run/node-inngest Try Polar: https://cwa.run/node-polar Try Better Auth: https://cwa.run/node-auth Try Sentry: https://cwa.run/sentry Try CodeRabbit: https://cwa.run/node-rabbit Try Neon: https://cwa.run/node-neon In this tutorial, we're building Nodebase, a complete workflow automation platform from scratch. You'll learn how to create a visual drag-and-drop canvas for building workflows, integrate multiple triggers and AI providers, handle background job execution, and build a full SaaS business layer with authentication, subscriptions, and paywalls. We'll also cover error tracking with AI monitoring and a professional Git workflow with AI-powered code reviews. Key features: 🔄 Visual workflow builder 🎯 Trigger nodes (Webhook, Google Form, Stripe, Manual) 🤖 AI integrations (OpenAI, Claude, Gemini) 💬 Messaging nodes (Discord, Slack) 🌐 HTTP request node ⚡ Background job execution with Inngest 💳 Polar payments & subscriptions 🔐 Better Auth authentication 🎨 React Flow canvas 🗄️ Prisma ORM + Neon Postgres 🔒 Type safety with TypeScript + tRPC 🐛 Sentry error tracking + AI monitoring 🧑‍💻 CodeRabbit PR reviews 🌐 Next.js 15 App Router 📱 Production-ready SaaS Timestamps 00:00 Intro 06:05 01 Setup 29:33 02 Database 56:15 03 tRPC Setup 01:35:21 04 Authentication 02:37:24 05 Theme & Styling 02:55:05 06 Background Jobs 03:28:09 07 AI Providers 04:01:53 08 Error Tracking 04:27:54 09 Sidebar Layout 05:06:26 10 Payments Setup 05:44:04 11 Workflows Crud 06:45:20 12 Workflows Pagination 07:34:34 13 Workflows UI 08:23:40 14 Workflow Page 08:59:36 15 Editor Setup 09:50:42 16 Node Selector 10:40:32 17 Editor State 11:59:20 End of Part 1

In this video, you'll bridge the gap between web and mobile with an intensive crash course on React Native fundamentals and modern features like file-based routing and server components. Then, you’ll build Recurrly, a subscription tracker using Expo. You’ll implement essential real-world features before taking the leap that most tutorials skip: publishing your app to the Apple App Store and Google Play Store so you can actually start monetizing your work. Expo: https://jsm.dev/nativesub-expo Expo EAS : https://jsm.dev/nativesub-eas Clerk: https://jsm.dev/nativesub-clerk PostHog: https://jsm.dev/nativesub-posthog CodeRabbit: https://jsm.dev/nativesub-coderabbit Junie AI: https://jsm.dev/nativesub-junie WebStorm: https://jsm.dev/nativesub-webstorm 🧠 Wanna build like I do? Join my Agentic Course → https://jsm.dev/nativesub-agentic 📋 Join the React Native Course Waitlist: https://jsm.dev/nativesub-native 🎁 Video Kit (Code, Assets, Prompts): https://jsm.dev/nativesub-kit ⭐ JSM Pro Courses: https://jsm.dev/nativesub-jsm ➤ Links not working? Some regions may need a VPN. https://discord.com/invite/n6EdbFJ https://twitter.com/jsmasterypro https://instagram.com/javascriptmastery https://linkedin.com/company/javascriptmastery Business Inquiries: contact@jsmastery.pro Timestamps: 00:00:00 — Introduction 00:03:19 — Crash Course 00:13:14 — Fundamentals 00:23:44 — Project Setup 00:35:19 — Setup Styling (Nativewind) 00:45:17 — Routing & Navigation 01:03:10 — Tab Navigation 01:27:55 — Custom Fonts 01:36:11 — Home UI 02:24:13 — Clerk Setup 02:28:37 — Authentication 02:53:40 — PostHog 03:05:44 — Subscription Tab 03:10:16 — Create Subscriptions 03:13:57 — PostHog Custom Events 03:26:04 — EAS Build & Deploy 03:39:39 — Closing & What's Next