Abdul B.

Gen AI Engineer & Full-Stack JavaScript Developer | 5+ years shipping AI products used by millions I build production-grade AI features and scalable full-stack apps, not just demos. Most recently, I've been working on Aura (Aura: Meditation & Sleep), an Apple Award-winning mental wellness app with 7M+ users, where I work across React Native, Node.js microservices, and our AI Intelligence Service powered by OpenAI LLMs. ⭐ WHAT I DO BEST ⭐ LLM Features in Production: AI coaching chat, memory, journaling and insights built on OpenAI and Anthropic Claude, serving real users at scale. ⭐ AI Agents & Automation: Agentic workflows with tool calling, MCP (Model Context Protocol) integrations, and multi-agent orchestration with LangGraph. ⭐ RAG & Knowledge Systems: Retrieval pipelines with Pinecone, pgvector and Qdrant that give accurate, grounded answers. ⭐ Prompt Engineering & Evals: Versioned prompts, automated quality scoring and A/B testing with Braintrust, so AI changes ship safely. ⭐ LLM Cost & Latency Optimization: Model selection, context trimming and usage tracking to keep AI fast and affordable. ⭐ Voice AI: Real-time voice agents using LiveKit, ElevenLabs and speech-to-text. ⭐ Full-Stack Development: React.js, Next.js, React Native, Node.js, TypeScript, REST APIs and microservices. ⭐ Payments & Subscriptions: Stripe, App Store and Google Play billing, premium access and coaching credit systems. ➡ RECENT WORK ✅ Aura, mental wellness app (7M+ users): full-stack and AI engineering across mobile, web and backend. ✅ AI Intelligence Service: LLM-powered coaching, memory and personalized insights. ✅ GPT-4o mental health journaling assistant and LLM insights copilot. ✅ AI-powered trade strategy assistant (fintech). ✅ 30+ microservice system on Google Cloud (GKE, Docker, CI/CD). ✅ Production systems in health & wellness, marketing analytics, fintech and ride management. ➡ TECH STACK ✮ AI / LLM: OpenAI (GPT-4o and newer), Anthropic Claude, LangChain, LangGraph, LlamaIndex, Hugging Face, MCP, Braintrust ✮ Vector Databases: Pinecone, pgvector, Qdrant ✮ Frontend: React.js, Next.js, React Native, TypeScript, React Query, Zustand ✮ Backend: Node.js, Express.js, REST APIs, WebSockets, Prisma ✮ Databases: PostgreSQL, MongoDB, Firebase, BigQuery ✮ Cloud & DevOps: Google Cloud (GKE, Kubernetes), Docker, Firebase, CI/CD ✮ Integrations: Stripe, PayPal, OAuth 2.0, Mixpanel, Slack, Linear, Notion APIs ➡ WHY WORK WITH ME ✮ I've shipped AI to real users at scale, so I know what breaks in production and how to prevent it. ✮ End-to-end ownership: from API design and AI integration to frontend and cloud deployment. ✮ Clean, maintainable code that is easy to hand off. ✮ Clear communication, realistic timelines, and regular updates.