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I’m a Full-Stack AI Engineer with 5+ years of experience building production-grade AI applications, intelligent agents, RAG systems, automation workflows, and scalable SaaS platforms. I combine strong software engineering with applied AI to turn complex ideas into reliable, production-ready products. I work across the full development lifecycle, from architecture and AI integration to backend development, frontend interfaces, deployment, optimization, and scaling. I’ve built multimodal AI platforms, enterprise RAG systems, Voice AI applications, AI-powered video processing systems, autonomous multi-agent workflows, and AI SaaS products. My work includes low-latency Voice AI systems, high-accuracy RAG pipelines, optimized retrieval architectures, and LLM applications designed to reduce latency, token usage, and infrastructure costs. My core expertise includes: • AI Agents & Automation: CrewAI, LangChain, LangGraph, Agentic AI, n8n, workflow automation • Generative AI & LLMs: Transformers, Ollama, LoRA, QLoRA, PEFT, Unsloth, quantization • RAG & Search: RAG pipelines, semantic search, embeddings, vector databases, hybrid retrieval, reranking • Computer Vision & Deep Learning: TensorFlow, Keras, Scikit-Learn, YOLO, OCR, image processing • Backend Engineering: Python, Django, FastAPI, Node.js, REST APIs, PostgreSQL, authentication • Frontend Engineering: Next.js, React, TypeScript, Tailwind CSS • AI Image Generation: ComfyUI, Stable Diffusion, workflow development, image editing and automation • SaaS Architecture: Multi-tenant systems, AI integrations, cloud deployment, scalable backend architecture What I can build: • Autonomous AI agents and multi-agent systems • RAG chatbots and enterprise knowledge assistants • AI-powered SaaS applications • Voice AI and real-time AI applications • LLM-powered automation workflows • AI video processing and content automation systems • Computer vision and image-processing solutions • Custom ComfyUI workflows and AI image pipelines • LLM fine-tuning and model optimization • Full-stack applications using Python, Django, FastAPI, React, and Next.js I focus on clean architecture, reliable AI integration, performance, scalability, and maintainable code. If you have an AI product idea, an existing AI system that needs improvement, or a complex workflow that needs to be automated, I can help turn it into a production-ready solution.

I'm Ankit Vachhani, Founder & CEO of Spexion Technologies, helping startups, agencies, and businesses build, scale, and maintain digital products since 2015. With 10+ years of experience and 500+ projects delivered worldwide, my team and I provide end-to-end software development services—from idea validation and product strategy to development, deployment, scaling, and long-term support. We work as a technology partner for businesses that need reliable developers, experienced architects, and a team capable of handling complete projects across web, mobile, AI, cloud, and business automation. Services We Offer: • Custom Software Development • SaaS Product Development • AI Applications & AI Agent Development • ChatGPT, Claude, Gemini & LLM Integrations • RAG & Custom Knowledge Base Solutions • Business Process Automation • Web Application Development • Mobile App Development (Android, iOS, Flutter, React Native) • E-commerce Development (Shopify, WooCommerce, Custom Platforms) • CRM, ERP & Business Management Systems • API Development & Third-Party Integrations • Payment Gateway Integrations • Cloud Infrastructure & DevOps • AWS Deployment & Server Management • Database Design & Optimization • UI/UX Implementation • Product Modernization & Legacy System Upgrades • Maintenance, Support & Ongoing Development Technology Expertise: Backend: Laravel, PHP, Node.js, Python, .NET, REST APIs, GraphQL, MySQL, PostgreSQL, MongoDB Frontend: React, Next.js, Angular, Vue.js, JavaScript, TypeScript Mobile: React Native, Flutter, Android, iOS AI & Automation: OpenAI, Claude, Gemini, LLM Applications, AI Agents, RAG, Voice AI, STT/TTS, Workflow Automation Cloud & Infrastructure: AWS, Docker, CI/CD, Server Architecture, Performance Optimization Why Clients Work With Us: ✓ 10+ Years of Industry Experience ✓ 500+ Projects Successfully Delivered ✓ Clear Communication & Daily Progress Updates ✓ Dedicated Development Resources ✓ Scalable & Maintainable Code ✓ Transparent Scope, Timeline & Pricing ✓ Long-Term Support & Product Ownership Whether you need a single developer, a dedicated team, AI integration, a mobile app, a SaaS platform, or a complete software solution, we can help transform your idea into a reliable, scalable product. Let's discuss your project and find the best technical solution for your business.

AI Developer, AI Agent Developer and AI Automation Expert (Full-Stack AI Developer and AI Engineer). I build AI agents, AI automation (n8n, Make, Zapier, GoHighLevel), voice AI agents and RAG chatbots that run in production. Top Rated, 100% Job Success, 10,000+ hours on Upwork. IIT Guwahati computer science graduate with 10 years of software development and hands-on LLM work since 2021. 93 Upwork jobs completed, from quick automation fixes to a 500+ hour AI agent engagement. WHAT I BUILD • AI agents and agentic workflows: OpenAI, Claude, Gemini, LangChain, LangGraph, CrewAI, MCP servers, tool and function calling, multi-agent systems, human-in-the-loop approvals • AI automation and CRM automation: n8n, Make, Zapier, GoHighLevel (GHL), HubSpot, Salesforce, Airtable, Google Sheets, webhooks and custom APIs for lead generation, lead qualification, email and sales automation • Voice AI agents and AI receptionists: Vapi, Retell AI, Twilio, ElevenLabs, Deepgram, LiveKit, OpenAI Realtime API for inbound and outbound calls, appointment booking, call transfer and CRM updates • AI chatbots: WhatsApp, website, Slack and Telegram chatbots connected to your CRM, calendar and knowledge base • RAG and document AI: chat with PDFs, contracts, invoices and internal docs using embeddings, hybrid search, reranking, Pinecone, Qdrant, pgvector and Supabase • AI SaaS and MVP development: full-stack web and mobile apps with Python, FastAPI, Node.js, React, Next.js, React Native, Supabase, Stripe and AWS • Microsoft AI automation: Copilot Studio and Power Automate • Fixing AI-built apps: taking prototypes made with Claude Code, Cursor, Lovable or Bolt to production (bugs, security, performance, deployment) RECENT WORK • WhatsApp AI chatbot for a travel agency, integrated with Meta Ads (5-star review) • AI sales call assistant: real-time transcription and a low-latency AI copilot during live sales calls (MVP) • AI agent integrated into HubSpot CRM • AI agent for lead lookup and email automation • Retell AI voice agent and Make workflows, audited and updated for a live business • AI receptionist that answers calls 24/7, qualifies leads, books appointments and syncs with the calendar • AI platform for contract and invoice compliance • CloseMateAI: AI suggestions, error handling and UI improvements for a sales SaaS • Reddit automation bot and multiple n8n / Make workflow builds • Long-term AI agents engineering contract (500+ hours) HOW I WORK • A clear plan, timeline and estimate within hours of your message (average response 0-4 hours) • Fixed-price milestones or hourly, with regular updates and demo videos • Production-first: logging, error handling, LLM evaluation (LangSmith, Langfuse), cost and latency optimization • You own all code, prompts, workflows and accounts TECH STACK AI and LLMs: OpenAI API (GPT-4o, GPT-5, o-series), Claude, Gemini, Llama, Mistral, DeepSeek, Hugging Face, fine-tuning (LoRA, QLoRA) Agents: LangChain, LangGraph, CrewAI, AutoGen, OpenAI Assistants and Agents, MCP Voice AI: Vapi, Retell AI, Twilio, ElevenLabs, Deepgram, Whisper, LiveKit, Pipecat Automation: n8n, Make, Zapier, GoHighLevel, HubSpot, Salesforce, Airtable, Power Automate Backend: Python, FastAPI, Django, Flask, Node.js, NestJS, REST, GraphQL, WebSockets Frontend and mobile: React, Next.js, TypeScript, Vue, Tailwind CSS, React Native Data and cloud: PostgreSQL, MongoDB, Redis, Supabase, Firebase, Pinecone, Qdrant, pgvector, Stripe, AWS, GCP, Docker AI coding tools: Claude Code, Cursor CREDENTIALS B.Tech Computer Science, IIT Guwahati | AWS certified | Python certified (PCAP) | Top 4% on Stack Overflow | Top Rated on Upwork | 100% Job Success Send me your idea, workflow or existing codebase and I will reply with a practical plan, timeline and estimate.

❇️ Full-time independent freelancer ❇️ Interactive business apps expert ❇️ Integrated solutions architect ❇️ 12 years in Product Development — Contact me if you need business automation or interactive calculators 😎 Certified by Intel, IBM, Microsoft, Google, Cisco, Make and others. I build interactive business applications: ROI calculators, pricing tools, mortgage estimators and product configurators. I work directly with clients and can dedicate my schedule to your project. HOW TO GET STARTED: My workflow is highly autonomous and focused. You will get the best results if you simply describe your goal — this could be a text message, doc, or a Loom video. I will review it independently, plan the architecture, and discuss the roadmap with you. This initial alignment does not require a contract or billable hours 🎁 Custom App solution (Enterprise-Grade): GitLab — store source code and version control. Docker — package isolated/secured (stand-alone) app. Nuxt — type-safe, performant and production-grade engine. CI/CD — automated deploy to production and test environment. No-Code / Low-Code options (rapid deployment): Outgrow - Calconic - Calculoid - Jotform - GoHighLevel ARForms - TypeForm - Paperform - Fillout Formidable - Formsite - InvolveMe - Tally Gravity Forms - Heyflow - 123FormBuilder Softr - Framer - Stripe - Make - Zapier - ClickUp Worldwide markets: United States - Europe - Australia 🏆 My work focuses on complex internal logic and calculations designed to increase sales and generate qualified leads. 🏆 If you already have a Google Sheets or Excel file with formulas, I can turn it into a secure, production-ready web application. 🏆 Launch your Calculator, lead the market, and beat the competitors. My stack: Payment Gateways — Stripe, PayPal, Square. Website Embedding — WebFlow, Framer, WordPress, WooCommerce. Mail Services — Brevo, SendGrid, MailChimp. Databases — AirTable, Supabase, MySQL. Automations & API — Zapier, Make, n8n, Pipedream, Prototype, IFTTT, Integrately, Bit Flows. Frontend — Vue, React, JavaScript (ES6+), HTML5, CSS3. Backend — Nuxt, Node.js. Whether you need a custom application or a no-code solution, my goal is to build a tool that delivers measurable business value. You are awesome! 😉 👉👉