Hire the Best VoiceXML Developers

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Nabil A.

Lahore, Pakistan

$10/hr
5.0
78 jobs

๐—œ ๐—ฏ๐˜‚๐—ถ๐—น๐—ฑ ๐—”๐—œ ๐˜€๐˜†๐˜€๐˜๐—ฒ๐—บ๐˜€ ๐˜๐—ต๐—ฎ๐˜ ๐˜€๐—ฎ๐˜ƒ๐—ฒ ๐—ฏ๐˜‚๐˜€๐—ถ๐—ป๐—ฒ๐˜€๐˜€๐—ฒ๐˜€ $30๐—žโ€“$40๐—ž ๐˜†๐—ฒ๐—ฎ๐—ฟ๐—น๐˜† ๐—ฏ๐˜† ๐—ฎ๐˜‚๐˜๐—ผ๐—บ๐—ฎ๐˜๐—ถ๐—ป๐—ด ๐—ผ๐—ฝ๐—ฒ๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€, ๐˜€๐—ฎ๐—น๐—ฒ๐˜€, ๐—ฎ๐—ป๐—ฑ ๐˜€๐˜‚๐—ฝ๐—ฝ๐—ผ๐—ฟ๐˜ I have partnered with 10+ companies across real estate, healthcare, social media, education, manufacturing, cybersecurity, and enterprise SaaS to deploy production-ready AI agents that handle calls, schedule appointments, and send real-time notifications to owners for important emails. These are fully operational systems running 24/7. ๐‘๐ž๐š๐ฅ-๐ฐ๐จ๐ซ๐ฅ๐ ๐ฌ๐ฎ๐œ๐œ๐ž๐ฌ๐ฌ๐Ÿ๐ฎ๐ฅ ๐ฉ๐ซ๐จ๐๐ฎ๐œ๐ญ๐ฌ ๐›๐ฒ ๐ข๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ฒ: โžž ๐•๐จ๐ข๐œ๐ž ๐€๐ˆ โ€” Voice AI receptionist that answers calls and texts 24/7, books appointments, and qualifies leads automatically ยท Helps businesses stop missing customers, reduce response delays, and free up teams to focus on sales ยท Trusted by 500+ businesses, with 2M+ conversations handled, 5,000+ appointments booked, $2.5M+ client savings, and 99% uptime. โžž ๐‡๐ž๐š๐ฅ๐ญ๐ก ๐€๐ˆ โ€” Built ๐€๐ˆ ๐ฆ๐ž๐ž๐ญ๐ข๐ง๐ ๐ฌ into appointments and developed an AI agent that listens to consultations, drafts prescriptions for physicians, and generates clear action lists for patients automatically ยท๐ฉ๐š๐ญ๐ข๐ž๐ง๐ญ๐ฌ ๐ฌ๐š๐ฏ๐ž๐: 30+ by AI agents through continuous recovery-plan monitoring and early provider alerts when health dropped below the threshold ยท ๐๐จ๐œ๐ญ๐จ๐ซ ๐ก๐จ๐ฎ๐ซ๐ฌ ๐ฌ๐š๐ฏ๐ž๐: 5/week by reducing prescription-writing and routine documentation time. โžž ๐‚๐๐‚ ๐ˆ๐ง๐ฌ๐ฉ๐ž๐œ๐ญ๐ข๐จ๐ง โ€” AI-powered system that captures images of each finished part, compares them with drawings, and creates smart inspection reports ยท ๐’๐š๐ฏ๐ž๐ 15 ๐ก๐จ๐ฎ๐ซ๐ฌ/๐ฐ๐ž๐ž๐ค by cutting manual work and reducing errors ยท Uses computer vision and Claude to make quality checks faster, easier, and more accurate. ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ & ๐“๐ž๐œ๐ก ๐’๐ญ๐š๐œ๐ค: โœ… ๐€๐ˆ ๐Ž๐ซ๐œ๐ก๐ž๐ฌ๐ญ๐ซ๐š๐ญ๐ข๐จ๐ง: LangChain, LangGraph, LlamaIndex, Pydantic AI, Google ADK, OpenAI API, Claude, AWS Bedrock, Vertex AI, MCP Servers โœ… ๐€๐ ๐ž๐ง๐ญ๐ข๐œ ๐€๐ˆ: AI Agents, Multi-Agent Frameworks, Agentic Workflows, Workflow Orchestration, Autonomous AI Systems โœ… ๐•๐จ๐ข๐œ๐ž & ๐’๐ฉ๐ž๐ž๐œ๐ก ๐€๐ˆ: Retell AI, OpenAI Realtime API, OpenAI TTS, ElevenLabs, Whisper, Voice AI Agents, Speech-to-Text, Text-to-Speech โœ… ๐‘๐€๐† & ๐•๐ž๐œ๐ญ๐จ๐ซ ๐ƒ๐๐ฌ: RAG Pipelines, Pinecone, Weaviate, ChromaDB, Azure AI Search, Amazon OpenSearch, Hybrid Search โœ… ๐ƒ๐จ๐œ๐ฎ๐ฆ๐ž๐ง๐ญ ๐ˆ๐ง๐ญ๐ž๐ฅ๐ฅ๐ข๐ ๐ž๐ง๐œ๐ž: PDF Parsing, OCR, PO Automation, Document Q&A, ERP Integration, NetSuite, Oracle โœ… ๐Ž๐›๐ฌ๐ž๐ซ๐ฏ๐š๐›๐ข๐ฅ๐ข๐ญ๐ฒ: LangSmith, Logfire, Phoenix Arize, Deep Eval, LLM Evaluation, Prompt Testing โœ… ๐๐ซ๐จ๐ฆ๐ฉ๐ญ ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐ : Prompt Design, Chain-of-Thought, Prompt Chaining, System Prompt Architecture, Prompt Optimization, Structured Outputs, Function Calling. โœ… ๐†๐ž๐ง๐ž๐ซ๐š๐ญ๐ข๐ฏ๐ž ๐€๐ˆ ๐Œ๐จ๐๐ž๐ฅ๐ฌ: GPT-4o, GPT-4 Turbo, GPT-o1, GPT-o3, Claude Sonnet, Claude Opus, Claude Haiku, Gemini 1.5 Pro, Gemini 2.0 Flash, Whisper, ElevenLabs โœ… ๐๐š๐œ๐ค๐ž๐ง๐ & ๐ˆ๐ง๐Ÿ๐ซ๐š: Python, FastAPI, Django, Flask, Docker, Kubernetes, AWS, Azure, GCP, DigitalOcean โœ… ๐…๐ซ๐จ๐ง๐ญ๐ž๐ง๐: React, Next.js, Streamlit โœ… ๐ƒ๐š๐ญ๐š: PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, Celery, ETL, Data Pipelines โœ… ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง๐ฌ: HubSpot, Salesforce, NetSuite ERP, Zapier, Make, Slack, MS Teams, Stripe, REST, GraphQL

  • Amazon Web Services
  • AI Agent Development
  • AI App Development
  • Graph Database
  • Retrieval Augmented Generation
  • Vector Database
  • Vector Embedding
  • LangChain
  • Amazon Bedrock
  • DevOps Engineering
  • AI Bot
  • AI Text-to-Speech
  • AI Chatbot
  • Mobile App
  • React
  • Next.js
  • Node.js
  • Python
  • OpenCV
Atul K.

Noida, India

$30/hr
4.9
162 jobs

๐—ง๐—ผ๐—ฝ ๐—ฅ๐—ฎ๐˜๐—ฒ๐—ฑ ๐—”๐—œ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ & ๐—™๐˜‚๐—น๐—น-๐—ฆ๐˜๐—ฎ๐—ฐ๐—ธ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ฒ๐—ฟ | 8+ ๐—ฌ๐—ฒ๐—ฎ๐—ฟ๐˜€ | ๐Ÿญ% ๐—ผ๐—ณ ๐—จ๐—ฝ๐˜„๐—ผ๐—ฟ๐—ธ | ๐Ÿญ๐Ÿฌ๐Ÿฌ% ๐—๐—ผ๐—ฏ ๐—ฆ๐˜‚๐—ฐ๐—ฐ๐—ฒ๐˜€๐˜€. โœ… $300K+ Total earnings โœ…8+ Years experience as Fullstack Developer โœ… 80+ Projects Completed. โœ…Top Rated Plus. โœ… 100% Job Success Rate. โœ… AWS certified โœ… Python certified โœ…50hrs/week available โœ… 4+ AI/ML Integrations ๐Ÿ”ด I am in the ๐—ง๐—ผ๐—ฝ ๐Ÿญ% overall on Upwork. ๐Ÿ”ด I am in the ๐—ง๐—ผ๐—ฝ ๐Ÿฐ% overall on Stack Overflow. ๐€๐ˆ ๐€๐ ๐ž๐ง๐ญ / ๐•๐จ๐ข๐œ๐ž ๐€๐ ๐ž๐ง๐ญ๐ฌ: ๐‚๐ซ๐ž๐ฐ๐€๐ˆ / ๐€๐ฎ๐ญ๐จ๐†๐ž๐ง / ๐€๐ฆ๐š๐ณ๐จ๐ง ๐๐จ๐ฅ๐ฅ๐ฒ / ๐ƒ๐ž๐ž๐ฉ๐ ๐ซ๐š๐ฆ / ๐‘๐š๐ฌ๐š ๐€๐ˆ / ๐‘๐ข๐ฏ๐ž๐ซ๐ฌ๐ข๐๐ž ๐’๐ƒ๐Š / ๐€๐ณ๐ฎ๐ซ๐ž ๐€๐ˆ ๐’๐ฉ๐ž๐ž๐œ๐ก/๐‹๐‹๐Œ ๐…๐ข๐ง๐ž๐ญ๐ฎ๐ง๐ข๐ง๐ : ๐”๐ฌ๐ข๐ง๐  ๐๐„๐…๐“ / ๐‹๐จ๐‘๐€ / ๐๐‹๐จ๐‘๐€ / ๐‘๐‹๐‡๐… / ๐ƒ๐๐Ž / ๐’๐…๐“ ๐ฐ๐ข๐ญ๐ก ๐”๐ง๐ฌ๐ฅ๐จ๐ญ๐ก / ๐€๐ฑ๐จ๐ฅ๐จ๐ญ๐ฅ / ๐‡๐ฎ๐ ๐ ๐ข๐ง๐ ๐…๐š๐œ๐ž ๐€๐ฎ๐ญ๐จ๐“๐ซ๐š๐ข๐ง / ๐’๐š๐ ๐ž๐Œ๐š๐ค๐ž๐ซ ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐ /๐Ž๐ฉ๐ž๐ง-๐’๐จ๐ฎ๐ซ๐œ๐ž ๐‹๐‹๐Œ๐ฌ: ๐‹๐‹๐€๐Œ๐€ ๐Ÿ‘ / ๐Œ๐ข๐ฌ๐ญ๐ซ๐š๐ฅ ๐Ÿ•๐ / ๐Œ๐ข๐ฑ๐ญ๐ซ๐š๐ฅ ๐Ÿ–๐ฑ๐Ÿ•๐ / ๐…๐š๐ฅ๐œ๐จ๐ง / ๐†๐ž๐ฆ๐ฆ๐š / ๐๐ฅ๐จ๐จ๐ฆ / ๐Ž๐ซ๐œ๐š ๐Œ๐ข๐ง๐ข / ๐†๐ฎ๐š๐ง๐š๐œ๐จ/๐…๐š๐ฌ๐ญ ๐ˆ๐ง๐Ÿ๐ž๐ซ๐ž๐ง๐œ๐ž: ๐ฏ๐‹๐‹๐Œ / ๐“๐†๐ˆ / ๐“๐ž๐ง๐ฌ๐จ๐ซ๐‘๐“-๐‹๐‹๐Œ / ๐’๐Š๐๐ข๐ฅ๐จ๐ญ/๐๐ซ๐จ๐ฆ๐ฉ๐ญ ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐ : ๐Œ๐ฎ๐ฅ๐ญ๐ข-๐ญ๐ฎ๐ซ๐ง / ๐…๐ž๐ฐ-๐ฌ๐ก๐จ๐ญ / ๐™๐ž๐ซ๐จ-๐ฌ๐ก๐จ๐ญ / ๐‘๐€๐†-๐๐š๐ฌ๐ž๐ / ๐๐ซ๐จ๐ ๐ซ๐š๐ฆ๐ฆ๐š๐›๐ฅ๐ž ๐๐ข๐ฉ๐ž๐ฅ๐ข๐ง๐ž๐ฌ/๐๐ฎ๐š๐ง๐ญ๐ข๐ณ๐š๐ญ๐ข๐จ๐ง: ๐€๐–๐ / ๐†๐๐“๐ / ๐†๐†๐”๐… / ๐†๐†๐Œ๐‹ / ๐๐‹๐Ž๐‘๐€ / ๐๐“๐ / ๐ƒ๐/๐‘๐€๐† ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ & ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ: ๐‹๐š๐ง๐ ๐‚๐ก๐š๐ข๐ง / ๐‹๐ฅ๐š๐ฆ๐š๐ˆ๐ง๐๐ž๐ฑ / ๐‚๐ก๐ซ๐จ๐ฆ๐š / ๐…๐€๐ˆ๐’๐’ / ๐๐ข๐ง๐ž๐œ๐จ๐ง๐ž / ๐๐๐ซ๐š๐ง๐ญ / ๐–๐ž๐š๐ฏ๐ข๐š๐ญ๐ž / ๐Œ๐ข๐ฅ๐ฏ๐ฎ๐ฌ Greetings! I am Atul Kumar, a seasoned developer with over 8+ years of experience in web application and software development. Working with LLMs for the past 8+ years and have good expertise in AI Agents development using langchain, LlamaIndex, and LLMs like Claude, GPT4o, Amazon Bedrock, Ollama ๐Ÿ”น AI Agents / Voice Agents: CrewAI, AutoGen, Amazon Polly, Deepgram, Rasa AI ๐Ÿ”น LLM Fine-tuning: PEFT, LoRA, QLoRA, RLHF, DPO with Unsloth, Axolotl, HuggingFace AutoTrain ๐Ÿ”น Open-Source LLMs: LLaMA 3, Mistral 7B, Mixtral 8ร—7B, Falcon, Gemma ๐Ÿ”น Inference Optimization: vLLM, TGI, TensorRT-LLM ๐Ÿ”น Prompt Engineering: Multi-turn, Few-shot, Zero-shot, RAG-based prompts ๐Ÿ”น Quantization: AWQ, GPTQ, GGUF, GGML ๐Ÿ”น RAG Systems: LangChain, LlamaIndex, ChromaDB, FAISS, Pinecone, Qdrant ๐Ÿ”น Data Pipeline: Synthetic dataset generation, LLM evaluation frameworks ๐Ÿ”น LLM Deployment: AWS Sagemaker, RunPod, GCP AI Platform, Vercel AI SDK ๐Ÿ–ฅ๏ธ ๐—•๐—ฎ๐—ฐ๐—ธ๐—ฒ๐—ป๐—ฑ ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€: ๐Ÿ”น Proficient in Node.js, Express.js, Python, Django, Flask, AWS Lambda for backend API. ๐Ÿ”น Experienced with relational & NoSQL databases: MySQL, PostgreSQL, MongoDB, Firebase, Firestore. ๐Ÿ”น Skilled in Python FastAPI, REST API, GraphQL API development, and database schema design. ๐Ÿ”น Knowledgeable in Redis, Docker, Kubernetes, AWS EC2, S3, Nginx for scalable infrastructure. ๐Ÿ”น Experienced with Nest.js for enterprise-grade server-side applications. ๐Ÿ”น LangChain, LangServe, LangSmith, HuggingFace, Transformers for AI/LLM integrations. ๐Ÿ”น Vector Databases: Chroma, FAISS, Pinecone, Qdrant for RAG pipelines. ๐Ÿ”น Low-code AI tools: Flowise AI, LangFlow, StackAI for rapid prototyping. ๐Ÿ”น Familiar with Celery task queues, testing frameworks (Pytest, Unittest), and automation tools like Selenium. ๐ŸŒ ๐—™๐—ฟ๐—ผ๐—ป๐˜๐—ฒ๐—ป๐—ฑ ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€: ๐Ÿ”น Proficient in TypeScript, Redux Toolkit, Tailwind CSS with Next.js for high-performance frontends. ๐Ÿ”น Skilled in building Progressive Web Apps (PWA) and Single Page Applications (SPA). ๐Ÿ”น Expert in Vue.js, Nuxt.js, React.js, Next.js, HTML5, CSS3, React Native for responsive and cross-platform UIs. ๐Ÿ› ๏ธ ๐—ง๐—ผ๐—ผ๐—น๐˜€ & ๐—ง๐—ฒ๐—ฐ๐—ต๐—ป๐—ผ๐—น๐—ผ๐—ด๐—ถ๐—ฒ๐˜€: ๐Ÿ”น Skilled in Python ML libraries: Scikit-learn, Numpy, Pandas, Matplotlib, Seaborn. ๐Ÿ”น Familiar with OpenAI APIs, Whisper, GPT models, ChatGPT integration, and AI chatbot deployment. ๐Ÿ”น Experienced with AWS (Lambda, S3, EC2, Sagemaker), Git/GitHub, and Linux environments (Ubuntu, CentOS). ๐ŸŒŸ ๐—”๐—ฑ๐˜ƒ๐—ฎ๐—ป๐—ฐ๐—ฒ๐—ฑ ๐—”๐—œ & ๐—Ÿ๐—Ÿ๐—  ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€: ๐Ÿ”น AI Agents / Voice Assistants: CrewAI, AutoGen, Amazon Polly, Deepgram, Rasa AI. ๐Ÿ”น Open-Source LLMs: LLaMA 3, Mistral 7B, Mixtral 8ร—7B, Falcon, Gemma. ๐Ÿ”น Inference Optimization: vLLM, TGI, TensorRT-LLM for high-speed deployments. ๐Ÿ”น Prompt Engineering: Multi-turn, Few-shot, Zero-shot, RAG-based prompts. ๐Ÿ”น Quantization: AWQ, GPTQ, GGUF, GGML for efficient LLM deployment. ๐Ÿ”น LLM Fine-tuning: PEFT, LoRA, QLoRA, RLHF, DPO with Unsloth, Axolotl, H My expertise spans both frontend and backend technologies, as well as a variety of tools and additional skills that enable me to deliver comprehensive solutions. I am dedicated to providing high-quality, efficient solutions that cater to the unique needs of each project. My diverse skill set allows me to approach challenges from multiple angles, ensuring robust and innovative solutions. Warm regards, Atul Kumar

  • AI Bot
  • AI Chatbot
  • AI Development
  • AI Text-to-Speech
  • AI Text-to-Image
  • AI Speech-to-Text
  • AI App Development
  • AI Agent Development
  • AI Mobile App Development
  • AI Image Generation
  • AI Implementation
  • AI Platform
  • AI Model Integration
  • AI Security
  • AI Trading
Fahad A.

Faisalabad, Pakistan

$25/hr
5.0
43 jobs

I design and build scalable, AI-powered, full-stack web applications for startups, SaaS companies, and businesses looking to integrate artificial intelligence, chatbots, real-time communication, and automation into their products. I am a Full-Stack & AI Engineer with hands-on expertise in AI chatbot development, large language models (LLMs), OpenAI integrations, AI agents, RAG systems, vector databases, Python backend development, FastAPI, REST APIs, WebSockets, and modern frontend frameworks including Next.js and React. My solutions are production-ready, secure, high-performance, and optimized for real users, not demos or experiments. I specialize in end-to-end AI product development, covering system architecture, AI workflow design, backend engineering, frontend development, and real-time integrations. I build intelligent chatbots, AI assistants, voice-based AI agents, real-time AI systems using LiveKit, and AI-integrated SaaS platforms that scale reliably. From LLM orchestration, embeddings, retrieval-augmented generation (RAG), and tool calling, to low-latency voice/video pipelines, real-time messaging, and AI dashboards, I handle the complete technical stack with a strong focus on performance, scalability, maintainability, and business impact. My core technical stack includes Python (FastAPI, async programming), AI and LLM APIs, chatbot frameworks, vector databases, LiveKit real-time voice and video, WebRTC, Next.js, React, TypeScript, RESTful APIs, WebSocket-based systems, cloud-ready architectures, and full-stack application development. Whether you need to build an AI chatbot from scratch, integrate AI into an existing application, create a real-time communication platform, deploy AI agents, or modernize your frontend and backend, I bring clarity, structure, and senior-level execution to every project. What I Do Best: AI Chatbots & Intelligent Agents: I build advanced, production-grade AI chatbots and intelligent agents that are designed for real-world usage, scalability, and business impact. My chatbot solutions are not limited to basic responses they include structured conversation flows, memory, tool calling, and intelligent decision-making. โ€ขโ  โ Custom AI chatbots using OpenAI, LLMs, and AI agents โ€ขโ  โ Intelligent conversation design with context, memory, and state โ€ขโ  โ Tool calling, function execution, and workflow automation โ€ขโ  โ RAG (Retrieval Augmented Generation) using vector databases and embeddings โ€ขโ  โ AI agents for customer support, sales, onboarding, lead qualification, and internal operations โ€ขโ  โ Text-based and voice-based AI assistants โ€ขโ  โ Secure, scalable chatbot architectures ready for production AI Integrations & Automation: I specialize in integrating AI into existing systems and SaaS platforms to improve efficiency, automation, and user experience. I design robust backend orchestration layers that connect AI models with real business systems. โ€ขโ  โ AI integrations into SaaS products, web apps, and internal platforms โ€ขโ  โ Secure API development and third-party service integrations โ€ขโ  โ AI-driven automation pipelines and intelligent workflows โ€ขโ  โ CRM integrations and internal business tools โ€ขโ  โ Backend orchestration for AI logic and decision-making โ€ขโ  โ Scalable, maintainable, and production-ready AI systems Real-Time Applications (LiveKit): I build real-time voice, video, and AI-powered communication systems using LiveKit, optimized for low latency, reliability, and scale. These systems are ideal for AI agents, live support, meetings, and real-time collaboration tools. โ€ขโ  โ LiveKit voice and video applications โ€ขโ  โ Real-time AI agents with low-latency pipelines โ€ขโ  โ Voice-enabled AI assistants with speech-to-text and AI responses โ€ขโ  โ AI-powered real-time communication systems โ€ขโ  โ WebRTC-based architectures and scalable real-time infrastructure โ€ขโ  โ Seamless integration of AI with live audio and video streams Backend Engineering (Python): I design and build high-performance, AI-focused backend systems using Python, with a strong emphasis on scalability, security, and clean architecture. โ€ขโ  โ Python backend development using FastAPI and async APIs โ€ขโ  โ AI-focused backend services and microservices โ€ขโ  โ REST APIs, WebSockets, and real-time data pipelines โ€ขโ  โ Background jobs, task queues, and async processing โ€ขโ  โ Performance optimization, monitoring, and reliability โ€ขโ  โ Secure, clean, and maintainable backend architecture Frontend Development (Next.js & React) I develop modern, responsive, and high-performance frontend applications that work seamlessly with AI backends and real-time systems. โ€ขโ  โ Next.js and React applications โ€ขโ  โ AI dashboards, admin panels, and chatbot interfaces โ€ขโ  โ LiveKit real-time frontend integration โ€ขโ  โ Mobile-first, responsive UI/UX design โ€ขโ  โ Performance optimization, SEO, and accessibility โ€ขโ  โ Clean, scalable, and maintainable frontend code Let's work together. Iโ€™m ready to help you turn your idea into a powerful, reliable product.

  • PostgreSQL
  • Bootstrap
  • Django
  • Ruby on Rails
  • NGINX
  • Python
  • JavaScript
  • Node.js
  • RESTful API
  • Web Crawling
  • Automation
  • Data Scraping
  • API
  • Chatbot Development
  • OpenAI API
  • AI Bot
  • Chatbot Integration
  • AI Chatbot
  • AI Implementation
  • AI App Development
Mohsin S.

Lahore, Pakistan

$20/hr
5.0
95 jobs

โ˜‘ Top Rated Plus Developer (Top 3% on Upwork) โ˜‘ 12+ Years of Software Development Experience โ˜‘ 6000+ Hours Logged | 320+ Projects Completed โ˜‘ 100% Job Success & Client Satisfaction โ˜‘ Full Stack Specialist โ€“ Web, APIs, Video, Real-Time Apps โ˜‘ Known for High-Quality Work, Timely Delivery, and Clear Communication Hi, Iโ€™m Mohsin, a Full Stack Developer with over 12 years of experience building high-performance, scalable, and secure software solutions across web, desktop, real-time video, automation, and multimedia domains. I bring technical leadership, architectural precision, and a problem-solving mindset to every project delivering full-stack solutions from MVP to enterprise scale. Whether it's developing complex real-time platforms, WebRTC-powered video apps, multimedia streaming/processing tools, desktop applications, or rich web dashboards - I provide end-to-end product development with meticulous attention to code quality, UX, and long-term maintainability. ๐Ÿงฉ My Core Specializations โœ… Web & Mobile App Development (SPA, PWA, Cross-Platform) โœ… Desktop Application Development (Electron.js) โœ… Real-Time Communication Systems (WebRTC, LiveKit, Janus, Plivo) โœ… Video & Image Streaming, Editing, Processing (FFmpeg, OpenCV, GStreamer) โœ… Custom Dashboards, Admin Panels & Reporting Tools โœ… Chrome Extensions & Automation Tools โœ… Workflow Automation & API Integration โœ… AI & ML Integration (OpenAI, LangChain, Whisper, OCR, LLMs) ๐Ÿง  ๐๐š๐œ๐ค-๐„๐ง๐ ๐“๐ž๐œ๐ก๐ง๐จ๐ฅ๐จ๐ ๐ข๐ž๐ฌ: Node.js, NestJS, ExpressJS โ€“ REST & WebSocket APIs, Microservices Python, FastAPI โ€“ Processing-intensive services Custom CMS, Business Applications Scalable, real-time apps FFmpeg, OpenCV, GStreamer โ€“ Media processing pipelines LiveKit, Janus, Plivo, Agora, Twilio โ€“ WebRTC & audio/video services CRON, Google Apps Script โ€“ Workflow automation ๐ŸŽจ ๐…๐ซ๐จ๐ง๐ญ-๐„๐ง๐ ๐“๐ž๐œ๐ก๐ง๐จ๐ฅ๐จ๐ ๐ข๐ž๐ฌ: React.js, Next.js, Redux, React Query, Zustand Vue.js, Nuxt.js, Svelte, SvelteKit, Angular Tailwind CSS, Bootstrap, MUI, Chakra UI, Ant Design HTML5, CSS3, JavaScript (ES6+), TypeScript, jQuery React Native, Ionic โ€“ Cross-platform mobile apps Electron.js โ€“ Cross-platform desktop applications Storybook, Jest, Cypress, RTL โ€“ UI/Component testing Webpack, Vite, Babel, ESLint, Prettier โ€“ Frontend tooling ๐Ÿ—„๏ธ ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ & ๐’๐ญ๐จ๐ซ๐š๐ ๐ž: MongoDB, PostgreSQL, MySQL, SQLite, MSSQL Firebase, Supabase, Airtable, Redis, ElasticSearch ๐Ÿ“ฝ๏ธ ๐•๐ข๐๐ž๐จ, ๐€๐ฎ๐๐ข๐จ, & ๐ˆ๐ฆ๐š๐ ๐ž ๐๐ซ๐จ๐œ๐ž๐ฌ๐ฌ๐ข๐ง๐ : FFmpeg โ€“ Encoding, Streaming, Filtering, Thumbnail Extraction OpenCV, MediaPipe โ€“ Image Analysis Canvas/WebGL, Three.js โ€“ Custom rendering & 3D interactions Video Calling & Live Broadcasting โ€“ WebRTC, LiveKit, Janus, Agora Screen/Camera Recorders, Photo Editors, AI Video Filters CDN & ABR Integration โ€“ Cloudflare Stream, Mux, AWS Media Services ๐Ÿค– ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง, ๐๐จ๐ญ๐ฌ & ๐’๐œ๐ซ๐š๐ฉ: Puppeteer, Playwright, Selenium โ€“ Browser automation Skylead, Lemlist, Apollo APIs โ€“ Outreach & lead automation Captcha Solving, Proxy Management, Session Persistence Custom Scrapers โ€“ Cheerio, JSDOM, Scrapy, BeautifulSoup Real-Time Sync to CRMs, Airtable, Google Sheets ๐Ÿ”Œ ๐€๐๐ˆ๐ฌ & ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง๐ฌ: Apollo, Airtable, SendGrid, Zoom API OAuth 2.0, JWT, Stripe, PayPal, Google Maps, OpenAI, Webhooks, CRON jobs ๐Ÿ›  ๐‚๐ฅ๐จ๐ฎ๐ & ๐ƒ๐ž๐ฏ๐Ž๐ฉ๐ฌ: Vercel, AWS, Google Cloud, Heroku, Railway, DigitalOcean Docker, GitHub Actions, CI/CD, PM2, Nginx, SSL, Cloudflare ๐Ÿ’ก ๐–๐ก๐š๐ญ ๐ˆ ๐๐ซ๐จ๐ฆ๐ข๐ฌ๐ž ๐–๐ก๐ž๐ง ๐–๐ž ๐–๐จ๐ซ๐ค ๐“๐จ๐ ๐ž๐ญ๐ก๐ž๐ซ: โœ… Clean, modular, and scalable codeโ€”fully documented โœ… Pixel-perfect UI/UX with responsiveness in mind โœ… Clear roadmap and agile milestone delivery โœ… Proactive updates, problem-solving, and technical guidance โœ… Long-term support, smooth handoffs, and easy scaling Letโ€™s turn your product vision into a powerful, user-centric software solution whether itโ€™s a startup MVP, a Chrome automation tool, a video streaming platform, or a full-fledged SaaS product. ๐Ÿ“ฉ Message me to start building something impactful, today.

  • Vue.js
  • React
  • Node.js
  • PostgreSQL
  • JavaScript
  • MongoDB
  • NestJS
  • WebRTC
  • FFmpeg
  • Python
  • Streaming Platform
  • Agora Video SDK
  • Video Processing
  • Image Processing
  • OpenAI API
  • React Native
  • AI Image Generation
  • Next.js
  • Supabase
  • Electron
Abdul Jamal N.

Islamabad, Pakistan

$35/hr
5.0
45 jobs

๐ŸŽ ๐—” ๐Ÿญ๐Ÿฌ๐Ÿฌ% ๐—ฟ๐—ฒ๐—ณ๐˜‚๐—ป๐—ฑ ๐—ถ๐—ณ ๐—œ ๐˜€๐—ฒ๐˜ ๐˜๐—ต๐—ฒ ๐˜„๐—ฟ๐—ผ๐—ป๐—ด ๐—ฒ๐˜…๐—ฝ๐—ฒ๐—ฐ๐˜๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ฎ๐—ป๐—ฑ ๐—ฐ๐—ฎ๐—ปโ€™๐˜ ๐—ฑ๐—ฒ๐—น๐—ถ๐˜ƒ๐—ฒ๐—ฟ. ๐—ก๐—ผ ๐—พ๐˜‚๐—ฒ๐˜€๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ฎ๐˜€๐—ธ๐—ฒ๐—ฑ! I architect the AI systems other developers can't ship production RAG pipelines, multi-agent LLM apps and chatbots on a full-stack React, Next.js and Node.js base. Previously Expert-Vetted (top 1% on Upwork). ๐Ÿ… 100% Job Success ๐Ÿš€ About I architect production AI agent systems multi-tenant LLM orchestration, agentic RAG, voice AI, and MCP servers for SaaS founders and agencies who need real systems, not chatbot demos. 15+ years of full-stack engineering means your AI doesn't just work in a Loom video; it scales, bills, and survives real traffic. ๐ŸŒŸ What I Deliver โœ… AI Agent Platforms Multi-tenant orchestration with multi-LLM execution (OpenAI, Anthropic, Gemini), agentic RAG, MCP servers, embeddable widgets, LangSmith tracing, cost/KPI analytics โœ… Voice AI & Conversational Agents Production voice with VAPI, ElevenLabs, Twilio inbound/outbound calling, transcription, workflow triggers, per-call cost attribution โœ… AI Workflow Automation n8n-powered agentic workflows connecting LLMs, CRMs, payments, and 70+ APIs into autonomous business processes โœ… Multi-Tenant SaaS Infrastructure Laravel/Node backends with per-tenant isolation, subscription billing, role-based access, React frontends scaling 100 to 100K users โœ… Enterprise AI Integrations Stripe, Salesforce, HubSpot, Go High Levek (GHL) ,Shopify, OpenAI, Anthropic, Gemini, ElevenLabs, VAPI, Twilio webhook routing, async queues, full observability ๐Ÿ—๏ธ What I Build AI Agent Orchestration Platforms Production multi-tenant systems that deploy, manage, monitor AI agents at scale: multi-LLM, agentic RAG (Pinecone/MongoDB), streaming chat, cost tracking, KPI dashboards, embeddable widgets. Voice AI & Conversational Automation Voice agents with ElevenLabs, VAPI, Twilio inbound/outbound calls, real-time transcription, post-call analysis, workflow triggers, per-call cost attribution. n8n Workflow Automation Builders No-code automation backed by n8n with drag-and-drop editors, multi-step agentic workflows, webhooks, 20+ tool integrations (Slack, Sheets, Asana, ClickUp, HubSpot). MCP Servers & Agent Tool Integration Custom Model Context Protocol servers giving AI agents tool-use, structured outputs, and secure access to internal data. Multi-Tenant SaaS Backends Laravel backends with per-tenant isolation, subscription billing, role-based permissions, REST APIs built to scale from first customer to thousands. React Frontends at Scale TypeScript React 18 with BLoC, real-time streaming (Socket-io + Pusher), embeddable widgets, browser extensions, visual workflow builders CI/CD deployed. API Integration Systems 70+ integrations across Stripe, Salesforce, HubSpot, Shopify, FedEx, VAPI, Twilio, OpenAI, Anthropic, Gemini webhook routing, async queues (Laravel Horizon), error tracking. ๐Ÿ‡ Signature Work ๐Ÿ”ท Studio98-ai AI Workforce Platform (flagship): Multi-tenant AI agent orchestration serving 50+ clients across sales, marketing, ops, support. LangChain orchestration with OpenAI/Anthropic/Gemini, agentic RAG via MongoDB/PostgreSQL, MCP server, n8n workflows, LangSmith tracing. React 18 frontend with 27 modules, embeddable chat widget, browser extension, visual workflow builder, real-time SSE streaming. ๐Ÿ”ท Rave 2.0 Multi-tenant SaaS retail platform with subscription management, analytics, drag-and-drop page builder. ๐Ÿ”ท Enterprise Jira Governance Multi-team Agile system for 50+ developers with workflow automation and executive dashboards. ๐Ÿ› ๏ธ Core Tech Stack AI & Agents: LangChain ยท LangGraph ยท LangSmith ยท MCP ยท Agentic RAG (Pinecone, MongoDB) ยท OpenAI ยท Anthropic Claude ยท Gemini ยท Prompt Engineering Voice AI: VAPI ยท ElevenLabs ยท Twilio ยท Real-time Transcription Automation: n8n ยท Make ยท Webhooks Backend: Laravel 11 ยท PHP 8.1+ ยท Node.js ยท TypeScript ยท Nova ยท Sanctum ยท Octane ยท Horizon ยท Redis ยท MongoDB ยท PostgreSQL Frontend: React 18 ยท TypeScript ยท Vue.js ยท Inertia.js ยท Socket-io ยท Pusher Infra: Docker ยท AWS ยท GCP ยท Firebase ยท CI/CD Delivery: Scrum (PSM I) ยท Jira ยท Confluence ยท ACP-620 ๐Ÿ’ก Why Clients Choose Me โœ… AI architecture, not AI demos production multi-tenant platforms that scale โœ… End-to-end ownership agent architecture to deployment to team handoff โœ… 15+ years, 50+ AI agents in production, 24,000+ Upwork hours โœ… Multi-LLM, multi-tenant, multi-channel platform scale, not script scale โœ… Top Rated Plus with 100% JSS sustained, not seasonal Last updated: 08.06.2026

  • Laravel
  • React
  • PHP
  • TypeScript
  • RESTful API
  • Zapier
  • API Development
  • Vue.js
  • AI Development
  • Stripe API
  • PayPal Integration
  • Vercel
  • API Integration
  • API
  • Node.js
  • JavaScript
  • AWS Development
  • Replit
  • Next.js
Daniel I.

Ado Odo, Nigeria

$20/hr
5.0
29 jobs

AI Voice Agent Developer specializing in Retell AI, Vapi, Twilio, GoHighLevel, AI Receptionist systems, Voice AI automation, and Conversational AI for businesses that need better call handling, lead qualification, appointment booking, CRM automation, missed-call follow-up, and inbound/outbound voice workflows. I build production-ready AI Voice Agents, AI Receptionists, website chatbots, and automation systems that answer calls, qualify leads, book appointments, transfer callers to a human, update your CRM, and trigger SMS or follow-up automations. If you need a Retell developer, Vapi developer, Twilio voice automation specialist, GoHighLevel AI expert, or AI chatbot developer, I build systems designed for real business use, not fragile demo bots. Most businesses donโ€™t have a lead problem. They have a response-time, call-handling, and follow-up problem. Missed calls, slow callbacks, poor qualification, manual scheduling, and disconnected tools all reduce conversion. I solve that by building Voice AI systems that work inside your real workflow and connect cleanly to your calendar, CRM, forms, pipelines, and backend tools. I design and deploy AI Voice Agents that can: Answer inbound calls 24/7 Sound natural using modern AI Text-to-Speech and Conversational AI Qualify leads and capture caller details Book appointments into your CRM or calendar Route or transfer calls to a real person Trigger SMS reminders, confirmations, and follow-up sequences Log call summaries, notes, tags, and outcomes automatically Support both inbound and outbound call flows Use live business data, not hardcoded responses What I build AI Receptionists for inbound calls, FAQs, call routing, and booking AI Voice Agents for lead qualification, follow-up calls, reactivation, and support Website chatbots connected to your CRM, calendar, and knowledge base GoHighLevel AI automation for missed-call text-back, pipeline updates, and workflows Retell AI / Vapi / Twilio systems with webhooks, APIs, custom logic, and call routing Appointment booking systems connected to GoHighLevel, Google Calendar, Calendly, and other tools Post-call automation for summaries, tagging, notes, CRM syncing, and follow-up sequences Core stack Retell AI, Vapi, Twilio, GoHighLevel, ElevenLabs, OpenAI, Python, Node.js, Make, n8n, Zapier, APIs, Webhooks, CRM Automation, Prompt Engineering, Conversational AI Typical use cases AI Receptionist for local service businesses Voice AI for dental, med spa, clinic, and healthcare booking workflows Lead qualification and follow-up for agencies and sales teams Missed-call automation for trades and home services Customer support chatbots and AI phone agents Twilio, Vapi, and Retell voice automation systems GoHighLevel CRM automation and pipeline workflows I work with businesses that depend on phone communication, speed-to-lead, and consistent follow-up, including local services, home services, trades, agencies, healthcare clinics, med spas, customer support teams, and lead generation businesses. My focus is always the same: build a system that is practical, reliable, scalable, and easy to manage. My process is simple: I map your call flow, define the business logic, build the AI system, connect the tools, test the workflow, and refine the conversation until it performs well in real usage. I focus on natural conversation flow, clean routing, CRM accuracy, reliable integrations, lead capture, appointment booking, and automation that reduces manual work. If you need an AI Voice Agent Developer, AI Receptionist expert, Retell AI specialist, Vapi developer, Twilio voice automation expert, GoHighLevel automation specialist, or Conversational AI builder, I can help you build a system that fits your business and your stack. Send me a message with: Your business type How calls are handled today Your current tools or CRM What you want automated Iโ€™ll review your setup and suggest the most practical approach for your AI Voice Agent, AI Receptionist, chatbot, or automation system.

  • AI Agent Development
  • Conversational AI
  • HighLevel
  • Twilio
  • Twilio API
  • API
  • API Integration
  • RESTful API
  • ElevenLabs
  • Make.com
  • n8n
  • OpenAI API
  • ChatGPT API
  • GPT-4
  • Python
  • FastAPI
  • Django
  • Artificial Intelligence
  • Chatbot
  • Chatbot Development

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