You will get Build an AI Voice Agent for Calls, Support & Booking
Project details
Want an AI voice agent that answers your phone, books appointments, and handles customer calls 24/7? I build real-time AI phone agents that sound natural, understand callers, and take action so you never miss a call or lead again.
Whether you need an inbound support line, an outbound sales or reminder caller, or a receptionist that books straight into your calendar, I deliver a production-ready voice agent tailored to your business.
What I build:
• Real-time inbound & outbound voice agents
• Appointment booking & calendar integration
• Call routing & smooth human handoff
• CRM, helpdesk & API integration
• Multilingual voice support
• Low-latency, natural-sounding conversations
Built with the best voice stack:
Vapi, LiveKit, Retell, Twilio, ElevenLabs, Deepgram, Whisper, GPT-4 & Claude.
Why work with me:
✅ Top Rated Plus — top 1% of talent on Upwork
✅ $100K+ earned across 89+ projects
✅ 9,900+ hours of proven delivery
✅ End-to-end: from call flow to live deployment
Tell me what you want your voice agent to handle and I'll recommend the right setup. Message me to get started.
Whether you need an inbound support line, an outbound sales or reminder caller, or a receptionist that books straight into your calendar, I deliver a production-ready voice agent tailored to your business.
What I build:
• Real-time inbound & outbound voice agents
• Appointment booking & calendar integration
• Call routing & smooth human handoff
• CRM, helpdesk & API integration
• Multilingual voice support
• Low-latency, natural-sounding conversations
Built with the best voice stack:
Vapi, LiveKit, Retell, Twilio, ElevenLabs, Deepgram, Whisper, GPT-4 & Claude.
Why work with me:
✅ Top Rated Plus — top 1% of talent on Upwork
✅ $100K+ earned across 89+ projects
✅ 9,900+ hours of proven delivery
✅ End-to-end: from call flow to live deployment
Tell me what you want your voice agent to handle and I'll recommend the right setup. Message me to get started.
AI Algorithms
AdaBoost, AlexNet, Convolutional Neural Network, CycleGAN, Feedforward Neural Network, Gated Recurrent Unit, Large Language Model, Linear Discriminant Analysis, Long Short-Term Memory Network, Transformer ModelAI Applications
AI Chatbot, AI Text-to-Speech, AI-Enhanced Classification, AI-Enhanced Medical Imaging, AI-Generated Art, AI-Generated Code, AI-Generated Music, Image Processing, Image Recognition, Image-to-Image Translation, Natural Language Generation, Neural Style TransferAI Development Language
PythonAI Tools
Adobe Firefly, Azure OpenAI, Bing AI, Copy.ai, GitHub Copilot, Gradio, Hugging Face, Jasper AI, Microsoft 365 Copilot, Microsoft CNTKAI Models
AlphaCode, BERT, BLOOM, ChatGPT, DALL-E, Dolly, GPT-3, GPT-4, GPT-J, GPT-Neo, Jurassic-2, LaMDAWhat's included $200
These options are included with the project scope.
$200
- Delivery Time 3 days
- AI Model Integration
- Batch Normalization
- Database Integration
- Detailed Code Comments
- Image Upscaling
- MLOps
- Model Deployment
- Model Documentation
- Model Monitoring
- Model Testing & Optimization
- Model Tuning
- Natural Language Processing
- NLP Tokenization
- Pre-Training
- Prompt Engineering
- Setup File
- Source Code
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TU
Tommaso U.
May 11, 2026
AI Developer (LLM) – Refine MVP for Clinical Coding & Risk Analysis Tool
HJ
Hudson J.
Apr 14, 2026
30 minute consultation
JG
John G.
Jan 22, 2026
IT Work on DSAI DUES TO PROVIDER ISSUES
Vikas took us to another level. He seamlessly created an AI assessment tool which has benefited our business and placed us at the cutting edge of our industry. We highly recommend Vikas.
AL
Anantha L.
Dec 31, 2025
AI Voice implementation using Pipecat and options for multiple LLM, TTS and STT options
Vikas is very knowledgeable and skilled professional in AI project development. He was extremely helpful with our AI project - Conversation Voice AI which was very challenging and need to implement dynamic functions. I will hire him in future if a need arises and strongly recommends to others.
VN
Vijaiganesh N.
Dec 12, 2025
Voice Agent Development
Technically good. Easily available.
About Vikas
AI Developer| Voice AI Agent| AI Automation| AI Integration Expert |AI
100%
Job Success
Noida, India - 4:09 am local time
🔹 Availability: Full-time (𝟰𝟬–𝟱𝟬 𝗵𝗿𝘀/𝘄𝗲𝗲𝗸) | Open to long-term and enterprise AI projects.
🔹 Trusted AI/ML Engineer with 9+ 𝘆𝗲𝗮𝗿𝘀 of Exp. delivering intelligent solutions for startups, SaaS.
🔴 I am in the 𝗧𝗼𝗽 𝟭% overall on Upwork.
🔴 I am in the 𝗧𝗼𝗽 𝟮% overall on StackOverflow.
🟢 𝗠𝗖𝗣, 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀, 𝗥𝗔𝗚, 𝗚𝗿𝗮𝗽𝗵𝗥𝗔𝗚, 𝗩𝗼𝗶𝗰𝗲 𝗔𝗴𝗲𝗻𝘁𝘀, 𝗟𝗮𝗻𝗴𝗖𝗵𝗮𝗶𝗻, 𝗟𝗮𝗻𝗴𝗚𝗿𝗮𝗽𝗵, 𝗣𝗿𝗼𝗺𝗽𝘁 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴, 𝗩𝗲𝗰𝘁𝗼𝗿 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀, 𝗘𝗺𝗯𝗲𝗱𝗱𝗶𝗻𝗴𝘀, 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻 𝗖𝗮𝗹𝗹𝗶𝗻𝗴, 𝗧𝗼𝗼𝗹 𝗨𝘀𝗲, 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀, 𝗠𝘂𝗹𝘁𝗶-𝗔𝗴𝗲𝗻𝘁 𝗦𝘆𝘀𝘁𝗲𝗺𝘀, 𝗟𝗟𝗠 𝗙𝗶𝗻𝗲-𝗧𝘂𝗻𝗶𝗻𝗴, 𝗟𝗟𝗠 𝗘𝘃𝗮𝗹𝘀, 𝗚𝗲𝗻𝗔𝗜 𝗔𝗽𝗽𝘀, 𝗗𝗼𝗰𝘂𝗺𝗲𝗻𝘁 𝗔𝗜, 𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗕𝗮𝘀𝗲 𝗔𝗜, 𝗦𝗲𝗺𝗮𝗻𝘁𝗶𝗰 𝗦𝗲𝗮𝗿𝗰𝗵, 𝗛𝘆𝗯𝗿𝗶𝗱 𝗦𝗲𝗮𝗿𝗰𝗵, 𝗥𝗲𝗿𝗮𝗻𝗸𝗶𝗻𝗴, 𝗚𝘂𝗮𝗿𝗱𝗿𝗮𝗶𝗹𝘀, 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻
🔹 9+ Years of Experience as a Full-Stack AI/ML Developer.
🔹 $90K+ Billing done over Upwork.
🔹 5,600+ Hours on Upwork | 60+ Successful Projects Delivered.
🔹 Worked with Fortune 100 Companies.
🔹 Performance-Driven, Scalable & SEO-Optimized Web Applications.
I am Vikas Singh, a senior AI Developer and AI Integration Expert. I specialize in building autonomous Voice AI Agents, production-grade RAG pipelines, and complex AI Automation systems that connect deep learning models with enterprise-scale frontends and backends.
With 8+ years of engineering experience, I specialize in taking raw generative AI concepts and building the scalable architecture, API infrastructure, and agent workflows required to run them reliably in production environments.
📌 𝗔𝗜 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 & 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻𝘀: 📌
🔹 AI Agents & Multi-Agent Orchestration: LangGraph, CrewAI, AutoGen, MCP, Function Calling.
🔹 Voice AI & Low-Latency Bots: LiveKit, Vapi, Deepgram, Twilio, Amazon Polly.
🔹 LLM Fine-Tuning & Training: PEFT, LoRA, QLoRA, RLHF, DPO optimized via Unsloth, Axolotl, and Hugging Face.
🔹 Open-Source LLMs: Llama 3.x / Llama 4, DeepSeek-R1, Mistral, Mixtral, Gemma 2.
🔹 Advanced Search & Knowledge Bases: GraphRAG, Advanced RAG Pipelines, Semantic & Hybrid Search
🔹 Fast Inference & Optimization: vLLM, TensorRT-LLM, TGI, SkyPilot deployments (AWS/GCP/RunPod).
🔹 Quantization & Benchmarking: AWQ, GPTQ, GGUF, LLM Evaluation Frameworks (Langfuse, Arize Phoenix, Ragas).
🛠️ Full-Stack & System Integration Engineering:
🔹 Core Python Stack: FastAPI, Flask, Django, GPT APIs, Pytest.
🔹 Full-Stack JavaScript: Next.js, React, Node.js, Express.js, MongoDB, PostgreSQL.
🔹 Advanced Data Pipelines & Scraping: Playwright, Selenium, Scrapy, BeautifulSoup, High-Throughput Web Automation, Proxy Rotation, and Anti-Detect Scraping.
🔹 API Development & Security: RESTful Architectures, Webhooks, OAuth, API Gateways, Secure Endpoints.
🔹 FinTech & Bot Integrations: Interactive Brokers API, Binance API, Telegram Bot API, OddsJam API, Stripe.
🔹 DevOps & Cloud LLMOps: Docker, Kubernetes, Ansible, GitLab CI/CD, AWS, Azure, GCP, DigitalOcean.
📌 𝗠𝘆 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: 📌
⚙️ Autonomous Multi-Agent Workflow Design: Developing complex, human-in-the-loop multi-agent systems using LangGraph.
⚙️ Production-Ready Voice AI Agent Integration: Building real-time conversational streaming bots for SaaS, support, and sales applications.
⚙️ Enterprise RAG & Data Ingestion Pipelines: Constructing accurate knowledge base architectures using GraphRAG and Vector DBs to solve model hallucinations.
⚙️ Algorithmic Trading & Script Automation: Custom Python-based trading bots, dashboard execution, and Interactive Brokers/Binance secure API integrations.
⚙️ High-Volume Web Harvesting & ETL: Scalable web scrapers and crawlers engineered to bypass restrictions, clean unstructured data, and pipeline it directly into vector storage.
⚙️ Custom Enterprise Microservices: Designing clean, secure RESTful APIs to connect existing software legacy setups with modern GenAI capabilities.
I believe in creating lasting partnerships with my clients by delivering high-performance code on time and exceeding expectations. I look forward to bringing my technical expertise and passion for artificial intelligence to your project.
Let's discuss how we can scale your system. Message me to get started today!
Thanks,
Vikas Singh
Steps for completing your project
After purchasing the project, send requirements so Vikas can start the project.
Delivery time starts when Vikas receives requirements from you.
Vikas works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Call Flow
I map out the conversation flow, use cases, telephony setup, and the voice and language you want.
Voice & Logic Build
I build the agent with speech-to-text, the LLM brain, and natural text-to-speech, then wire up your tools.