Dev Bhangale

@devbhangale

AI and Web Developer, Fullstack, AI Agent, Voice Agent, RAG, LLMs

India
English, Hindi
About me
I've shipped multiple AI products for businesses and my clients since nearly 2 years now. Full-Stack AI Engineer specializing in AI chatbot development, voice AI agents, Multi-agent AI systems, RAG pipelines, and SaaS apps. Portfolio: devbhangale.vercel.app You get one engineer handling AI, backend, and frontend. ✅ LangGraph & LangChain AI agents with memory, tool calling & eval ✅ Real time Voice AI agents for live calls (LiveKit, Retell, Vapi) ✅ RAG systems on Qdrant with hybrid semantic search ✅ Next.js 15 + FastAPI + PostgreSQL SaaS apps ✅ Multi-agent pipelines for Business Automations... Read more

Skills

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devbhangale
Dev Bhangale
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AI Technology Consulting
I will your ai specialist for ai strategy and solution consultation
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Portfolio

Work experience

Self_Employed

Self Employed

Freelance • 3 yrs 7 mos

Freelance Algorithmic Strategy Developer

Oct 2025 - Present • 9 mos

Designing and deploying algorithmic trading systems integrated with live exchange APIs for quantitative strategy automation. 🔹 Built end-to-end trading pipelines covering strategy backtesting, live signal execution, real-time market data ingestion, and performance analytics dashboards. 🔹 Integrated with live exchange APIs for automated order execution and position management. 🔹 Developed strategy evaluation frameworks with drawdown analysis, Sharpe ratio tracking, and regime detection. Stack: Python, FastAPI, live exchange APIs, WebSockets, PostgreSQL, real-time data pipelines, backtesting engines.

Freelance AI Developer

Mar 2025 - Present • 1 yr 4 mos

Designing and deploying production-grade AI agent systems, LLM-powered workflows, and conversational AI platforms for business clients. 🔹 Built Astrophage, a LangGraph-based AI platform with multi-tool orchestration, Qdrant RAG, Gemini Live API voice, and 12 bound tools. Achieved a 5x agent latency reduction from 30 seconds to 6 seconds through pipeline redesign. 🔹 Shipped a real-time voice AI agent platform using LiveKit and Google Cloud Vertex AI delivering sub-200ms end-to-end response latency with Gemini 2.5 native audio. 🔹 Built an LLM-powered ticketing and triage system with automatic classification, priority scoring, and CRM integration for a business client. Stack: LangGraph, LangChain, CrewAI, OpenAI API, Gemini API, Claude API, Qdrant, FastAPI, LiveKit, Deepgram, ElevenLabs, Sarvam AI, Docker, GCP.

Freelance Web Developer

Jan 2025 - Present • 1 yr 6 mos

Architecting and delivering full-stack web systems for clients ranging from conversion-focused marketing sites to production-grade SaaS platforms. 🔹 Built InwiseIt, a production SaaS invoice platform with Next.js 15, FastAPI, PostgreSQL, role-based access control, multi-tenant architecture, and a shadcn/ui component library. 🔹 Delivered static and dynamic client websites with mobile-first design, clean layouts, and CMS integration built for conversion. 🔹 Shipped complex full-stack solutions combining React 19 frontend, FastAPI backend, PostgreSQL, and WebSocket-powered real-time features. Stack: Next.js 15, React 19, FastAPI, PostgreSQL, Tailwind CSS, shadcn/ui, TypeScript, WebSockets, REST APIs, Vercel, Docker.