Hire the Best AI Assistant Developers

Clients rate our AI Assistant Developers
Rating is 4.8 out of 5.
4.8/5
Based on 2,564 client reviews
Atul K.

Noida, India

$30/hr
4.9
165 jobs

𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 & 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 8+ 𝗬𝗲𝗮𝗿𝘀 | 𝟭% 𝗼𝗳 𝗨𝗽𝘄𝗼𝗿𝗸 | 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀. ✅ $300K+ Total earnings ✅8+ Years experience as Fullstack Developer ✅ 80+ Projects Completed. ✅Top Rated Plus. ✅ 100% Job Success Rate. ✅ AWS certified ✅ Python certified ✅50hrs/week available ✅ 4+ AI/ML Integrations 🔴 I am in the 𝗧𝗼𝗽 𝟭% overall on Upwork. 🔴 I am in the 𝗧𝗼𝗽 𝟰% overall on Stack Overflow. 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭 / 𝐕𝐨𝐢𝐜𝐞 𝐀𝐠𝐞𝐧𝐭𝐬: 𝐂𝐫𝐞𝐰𝐀𝐈 / 𝐀𝐮𝐭𝐨𝐆𝐞𝐧 / 𝐀𝐦𝐚𝐳𝐨𝐧 𝐏𝐨𝐥𝐥𝐲 / 𝐃𝐞𝐞𝐩𝐠𝐫𝐚𝐦 / 𝐑𝐚𝐬𝐚 𝐀𝐈 / 𝐑𝐢𝐯𝐞𝐫𝐬𝐢𝐝𝐞 𝐒𝐃𝐊 / 𝐀𝐳𝐮𝐫𝐞 𝐀𝐈 𝐒𝐩𝐞𝐞𝐜𝐡/𝐋𝐋𝐌 𝐅𝐢𝐧𝐞𝐭𝐮𝐧𝐢𝐧𝐠: 𝐔𝐬𝐢𝐧𝐠 𝐏𝐄𝐅𝐓 / 𝐋𝐨𝐑𝐀 / 𝐐𝐋𝐨𝐑𝐀 / 𝐑𝐋𝐇𝐅 / 𝐃𝐏𝐎 / 𝐒𝐅𝐓 𝐰𝐢𝐭𝐡 𝐔𝐧𝐬𝐥𝐨𝐭𝐡 / 𝐀𝐱𝐨𝐥𝐨𝐭𝐥 / 𝐇𝐮𝐠𝐠𝐢𝐧𝐠𝐅𝐚𝐜𝐞 𝐀𝐮𝐭𝐨𝐓𝐫𝐚𝐢𝐧 / 𝐒𝐚𝐠𝐞𝐌𝐚𝐤𝐞𝐫 𝐓𝐫𝐚𝐢𝐧𝐢𝐧𝐠/𝐎𝐩𝐞𝐧-𝐒𝐨𝐮𝐫𝐜𝐞 𝐋𝐋𝐌𝐬: 𝐋𝐋𝐀𝐌𝐀 𝟑 / 𝐌𝐢𝐬𝐭𝐫𝐚𝐥 𝟕𝐁 / 𝐌𝐢𝐱𝐭𝐫𝐚𝐥 𝟖𝐱𝟕𝐁 / 𝐅𝐚𝐥𝐜𝐨𝐧 / 𝐆𝐞𝐦𝐦𝐚 / 𝐁𝐥𝐨𝐨𝐦 / 𝐎𝐫𝐜𝐚 𝐌𝐢𝐧𝐢 / 𝐆𝐮𝐚𝐧𝐚𝐜𝐨/𝐅𝐚𝐬𝐭 𝐈𝐧𝐟𝐞𝐫𝐞𝐧𝐜𝐞: 𝐯𝐋𝐋𝐌 / 𝐓𝐆𝐈 / 𝐓𝐞𝐧𝐬𝐨𝐫𝐑𝐓-𝐋𝐋𝐌 / 𝐒𝐊𝐏𝐢𝐥𝐨𝐭/𝐏𝐫𝐨𝐦𝐩𝐭 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: 𝐌𝐮𝐥𝐭𝐢-𝐭𝐮𝐫𝐧 / 𝐅𝐞𝐰-𝐬𝐡𝐨𝐭 / 𝐙𝐞𝐫𝐨-𝐬𝐡𝐨𝐭 / 𝐑𝐀𝐆-𝐁𝐚𝐬𝐞𝐝 / 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐚𝐛𝐥𝐞 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬/𝐐𝐮𝐚𝐧𝐭𝐢𝐳𝐚𝐭𝐢𝐨𝐧: 𝐀𝐖𝐐 / 𝐆𝐏𝐓𝐐 / 𝐆𝐆𝐔𝐅 / 𝐆𝐆𝐌𝐋 / 𝐐𝐋𝐎𝐑𝐀 / 𝐏𝐓𝐐 / 𝐃𝐐/𝐑𝐀𝐆 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 & 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: 𝐋𝐚𝐧𝐠𝐂𝐡𝐚𝐢𝐧 / 𝐋𝐥𝐚𝐦𝐚𝐈𝐧𝐝𝐞𝐱 / 𝐂𝐡𝐫𝐨𝐦𝐚 / 𝐅𝐀𝐈𝐒𝐒 / 𝐏𝐢𝐧𝐞𝐜𝐨𝐧𝐞 / 𝐐𝐝𝐫𝐚𝐧𝐭 / 𝐖𝐞𝐚𝐯𝐢𝐚𝐭𝐞 / 𝐌𝐢𝐥𝐯𝐮𝐬 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 🔹 AI Agents / Voice Agents: CrewAI, AutoGen, Amazon Polly, Deepgram, Rasa AI 🔹 LLM Fine-tuning: PEFT, LoRA, QLoRA, RLHF, DPO with Unsloth, Axolotl, HuggingFace AutoTrain 🔹 Open-Source LLMs: LLaMA 3, Mistral 7B, Mixtral 8×7B, Falcon, Gemma 🔹 Inference Optimization: vLLM, TGI, TensorRT-LLM 🔹 Prompt Engineering: Multi-turn, Few-shot, Zero-shot, RAG-based prompts 🔹 Quantization: AWQ, GPTQ, GGUF, GGML 🔹 RAG Systems: LangChain, LlamaIndex, ChromaDB, FAISS, Pinecone, Qdrant 🔹 Data Pipeline: Synthetic dataset generation, LLM evaluation frameworks 🔹 LLM Deployment: AWS Sagemaker, RunPod, GCP AI Platform, Vercel AI SDK 🖥️ 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗦𝗸𝗶𝗹𝗹𝘀: 🔹 Proficient in Node.js, Express.js, Python, Django, Flask, AWS Lambda for backend API. 🔹 Experienced with relational & NoSQL databases: MySQL, PostgreSQL, MongoDB, Firebase, Firestore. 🔹 Skilled in Python FastAPI, REST API, GraphQL API development, and database schema design. 🔹 Knowledgeable in Redis, Docker, Kubernetes, AWS EC2, S3, Nginx for scalable infrastructure. 🔹 Experienced with Nest.js for enterprise-grade server-side applications. 🔹 LangChain, LangServe, LangSmith, HuggingFace, Transformers for AI/LLM integrations. 🔹 Vector Databases: Chroma, FAISS, Pinecone, Qdrant for RAG pipelines. 🔹 Low-code AI tools: Flowise AI, LangFlow, StackAI for rapid prototyping. 🔹 Familiar with Celery task queues, testing frameworks (Pytest, Unittest), and automation tools like Selenium. 🌐 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗦𝗸𝗶𝗹𝗹𝘀: 🔹 Proficient in TypeScript, Redux Toolkit, Tailwind CSS with Next.js for high-performance frontends. 🔹 Skilled in building Progressive Web Apps (PWA) and Single Page Applications (SPA). 🔹 Expert in Vue.js, Nuxt.js, React.js, Next.js, HTML5, CSS3, React Native for responsive and cross-platform UIs. 🛠️ 𝗧𝗼𝗼𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: 🔹 Skilled in Python ML libraries: Scikit-learn, Numpy, Pandas, Matplotlib, Seaborn. 🔹 Familiar with OpenAI APIs, Whisper, GPT models, ChatGPT integration, and AI chatbot deployment. 🔹 Experienced with AWS (Lambda, S3, EC2, Sagemaker), Git/GitHub, and Linux environments (Ubuntu, CentOS). 🌟 𝗔𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝗔𝗜 & 𝗟𝗟𝗠 𝗦𝗸𝗶𝗹𝗹𝘀: 🔹 AI Agents / Voice Assistants: CrewAI, AutoGen, Amazon Polly, Deepgram, Rasa AI. 🔹 Open-Source LLMs: LLaMA 3, Mistral 7B, Mixtral 8×7B, Falcon, Gemma. 🔹 Inference Optimization: vLLM, TGI, TensorRT-LLM for high-speed deployments. 🔹 Prompt Engineering: Multi-turn, Few-shot, Zero-shot, RAG-based prompts. 🔹 Quantization: AWQ, GPTQ, GGUF, GGML for efficient LLM deployment. 🔹 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
Veronica P.

Toronto, Canada

$65/hr
4.9
87 jobs

I help companies turn complex, messy, or AI-generated content into clear, professional documentation that people understand and trust. I turn chaotic workflows into clear, repeatable systems. I help SaaS companies reduce support tickets, onboard users faster, and turn messy processes into clear SOPs and help centers. Whether you need an AI-assisted content cleanup, a Notion Help Center, or API documentation, I build the information architecture your users actually need. In addition to writing and editing, clients hire me to handle layout and visual clarity for documentation, reports, and marketing or executive materials. I’ve delivered content and design for customer-facing docs, internal playbooks, and professional reports, ensuring everything is presentation-ready without involving multiple freelancers. 🌐 What I do • Technical documentation (SOPs, user guides, internal documentation) • Help centers and knowledge bases (Zendesk, Notion, Confluence-style systems) • API and product documentation • Editing and proofreading 🌐 How I Work • Translate complex product and process knowledge into clear documentation • Create supporting visuals (diagrams, process flows, annotated screenshots) • Organize content for usability inside help centers and internal systems • Maintain consistency across content, formatting, and structure • Build structured, easy-to-navigate documentation systems • Deliver documentation that fits your existing tools and workflows 🌐 When Clients Bring Me In Clients hire me when: • Documentation is outdated, inconsistent, or scattered • AI-generated content needs human editing and accuracy • SOPs and internal processes are unclear or missing • Knowledge bases are disorganized and hard to use • Teams need structure, ownership, and clarity 🌐Problems I Solve • High support ticket volume due to poor documentation • Slow onboarding for users and internal teams • Disorganized Notion, Asana, or Monday systems • Inconsistent or low-quality documentation across teams • AI content that sounds robotic, inaccurate, or off-brand 🌐 Core Services 1. Technical Writing & Documentation • Building Help Centers, Knowledge Bases, and SOPs. • Documenting workflows and internal systems (SaaS, Enterprise). • User-focused writing for both non-technical and technical audiences. 2. Humanizing AI & Editing • Refining AI-generated drafts to sound natural and engaging. • Editing for ESL authors to ensure native-level fluency. • Brand voice alignment and rigorous proofreading. 3. Visual Layout & Information Design • Professional formatting for Reports, White Papers, and Manuals. • Creating visual playbooks, flowcharts, and diagrams. • Ensuring content is visually scannable and on-brand. 🌐 Client Feedback "Veronica transformed our dense technical content into engaging documentation that our customers actually use." 🌐 Why Clients Choose Me * 20+ years in technical writing and editing for IT, SaaS, AI, and network tech industries. * Deep Expertise in AI-ready documentation structured for intelligent search, chatbots, and future automation. * Strong combination of technical + editorial expertise * Trusted with high-stakes, sensitive, and publication-ready content * Deep experience with AI-assisted writing cleanup. * Clear, step-by-step documentation. * User-focused writing for non-technical and technical audiences * As a Certified Professional Technical Communicator (CPTC), I don’t just write instructions; I build the structure behind them so they actually work. 🌐 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐒𝐧𝐚𝐩𝐬𝐡𝐨𝐭 🌐 🔹Artificial Intelligence 🔹Intuitive Help Systems 🔹Efficient Workflows 🔹Meticulous Software Documentation 🌐 Skills & Tools Technical Writing: SaaS Documentation: • API Docs • AI & Machine Learning Guides • User Manuals • Online Help Systems • Knowledge Base Content • Process Documentation • White Papers • Case Studies Content Optimization & AI Readiness: Structured Authoring • Metadata Tagging • Content Reuse Strategies • AI-ready Documentation • Intelligent Search Optimization • Chatbot Knowledge Base Design Tools & Platforms: Confluence • Jira • GitHub • Notion • Markdown • XML/DITA • Microsoft 365 • Google Workspace, VISIO, Signavio, GitBook, Notion/Monday/Asana, Zendesk, Adobe Acrobat, Adobe Captivate, Arbortext, RoboHelp, XML, HTML, ST4, Help & Manual, SharePoint Industries: SaaS • AI/ML • Information Technology • Networking • Enterprise Software 📩 Let’s untangle the chaos. Click "Invite to Job" to discuss your project. To your success, Veronica Phillip, CPTC Lead Technical Writer & SaaS Documentation Specialist

  • Artificial Intelligence
  • Microsoft Visio
  • Technical Documentation
  • Technical Writing
  • XML
  • Microsoft Office
  • Adobe Captivate
  • HTML
  • Software Documentation
  • AI Implementation
  • AI Writing Generator
  • AI Model Training Prompt
  • AI Consulting
  • AI Text-to-Image
  • Tech & IT
Deepanshu S.

Ghaziabad, India

$15/hr
5.0
13 jobs

𝗜𝗻𝘀𝗽𝗶𝗿𝗲𝗱 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗿 & 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗡𝗲𝘄 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 | 𝗗𝗲𝘁𝗲𝗿𝗺𝗶𝗻𝗲𝗱 𝘁𝗼 𝗮𝗰𝗵𝗶𝗲𝘃𝗲 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 ✅ Passionate AI/ML & Full-Stack Developer ✅ Skilled in Python, Node.js, FastAPI, Next.js ✅ Hands-on with AI/LLM tools: LangChain, LlamaIndex, HuggingFace ✅ Available 30+ hrs/week | Flexible & committed ✅ Goal: Build a 100% Job Success Record with client-first delivery 🔴 I may be new on Upwork, but I’m investing all my focus into learning, building, and delivering projects that create real impact. 🔴 Active learner, contributing on GitHub & engaging in AI developer communities. 🔹 AI & LLM Skills AI Agents / Voice Agents: CrewAI, AutoGen, Amazon Polly, Deepgram, Rasa AI LLM Fine-tuning: PEFT, LoRA, QLoRA with HuggingFace & Axolotl Open-Source LLMs: LLaMA 3, Mistral 7B, Falcon, Gemma Prompt Engineering: Multi-turn, Few-shot, Zero-shot, RAG pipelines RAG Systems: LangChain, LlamaIndex, Chroma, Pinecone, Qdrant Deployment: AWS Sagemaker, RunPod, Vercel AI SDK 🖥️ Backend Skills Python (FastAPI, Flask, Django) | Node.js, Express.js, Nest.js REST API & GraphQL API development Databases: MySQL, PostgreSQL, MongoDB, Firebase Docker, Redis, AWS (EC2, S3, Lambda) 🌐 Frontend Skills React.js, Next.js, Vue.js, Nuxt.js TypeScript, Redux Toolkit, Tailwind CSS Building responsive web apps & cross-platform UIs 🛠️ Tools & Technologies ML libraries: Scikit-learn, Pandas, Numpy, Matplotlib OpenAI API, Whisper, GPT integrations Low-code AI tools: Flowise AI, LangFlow 🌟 Why Work With Me? I may not yet carry 8+ years of Upwork history, but I bring: A fresh mindset driven by curiosity and innovation Adaptability with new tools and frameworks A promise to deliver dedicated, reliable, and quality work every time Warm regards, Deepanshu

  • AI Bot
  • AI Chatbot
  • AI Implementation
  • AI Builder
  • AI Trading
  • AI Platform
  • AI Mobile App Development
  • AI Model Training Prompt
  • AI App Development
  • AI Model Integration
  • AI Content Detection
  • AI Agent Development
  • AI Development
  • AI Model Development
  • AI-Enhanced Classification
Maira Jessa T.

San Guillermo, Philippines

$3/hr
5.0
12 jobs

I have experience in both data entry and teaching, which has allowed me to develop a diverse skill set. As a Data Entry Specialist, I focus on accuracy, efficiency, and organization, ensuring that data is processed correctly and securely. On the other hand, as a Teacher, I am passionate about educating and mentoring students, helping them develop their skills and knowledge. Balancing these two roles has given me a unique perspective on both structured information management and effective communication.

  • Science Tutoring
  • Proofreading
  • Writing
  • Data Analysis Expressions
  • Data Entry
  • Transaction Data Entry
  • Midjourney AI
  • Generative AI
  • Canva
  • STEM Tutoring
  • AI Text-to-Image
  • AI Image Generator
  • Copy & Paste
  • Document Formatting
  • Lead Generation
Ramish M.

Rawalpindi, Pakistan

$10/hr
4.7
972 jobs

Are you in search of a Multitalented Personal Virtual Assistant who is an expert in doing day-to-day tasks? If yes, then you are at the right place. Hi, I am Ramish Mahmood, and I hold a Master’s degree in Business Administration (MBA). I am a multi-skilled Virtual Assistant & Business Support Specialist with years of experience supporting entrepreneurs, small businesses, and corporate teams. I specialize in handling day-to-day tasks, streamlining workflows, and managing projects so clients can focus on growth. With expertise across administration, e-commerce, customer service, social media, content creation, and CRM management, I provide a complete business support solution. Clients choose me because I am: ✅ Reliable and deadline-driven ✅ Detail-oriented and accuracy-focused ✅ Tech-savvy with 100+ tools mastered ✅ A problem-solver who delivers results ✅ Friendly, approachable, and professional ⸻ Services I Offer Administrative & Executive Support ✅ Calendar, scheduling, and appointment management ✅ Professional email handling & inbox organization ✅ Travel arrangements & expense tracking ✅ Document preparation, formatting, and editing (Word, Excel, Google Suite) ✅ Reports and presentations (PowerPoint, Canva, Google Slides) ✅ Transcription, note-taking, meeting summaries ✅ File organization & cloud management (Google Drive, Dropbox, OneDrive) ✅ HR support: CV screening, recruitment, onboarding Data Entry, Research & Lead Generation ✅ Accurate data entry (Excel, Google Sheets, CRMs) ✅ Data cleaning, formatting & validation ✅ Market research, competitor analysis, web research ✅ Contact list building & targeted prospect research ✅ LinkedIn Sales Navigator campaigns ✅ Data scraping/extraction (Import.io, ParseHub, Data Miner) ✅ Email verification (Hunter.io, NeverBounce) Email Management & Marketing ✅ Inbox organization & professional responses ✅ Writing & designing email campaigns ✅ Automation setup and list segmentation ✅ Platforms: Mailchimp, ActiveCampaign, ConvertKit, Klaviyo Customer Service & Chat Support ✅ Email, phone & live chat support ✅ Ticketing systems: Zendesk, Freshdesk, Gorgias ✅ Complaint resolution & refund processing ✅ Customer follow-ups & relationship building Social Media Management ✅ Platforms: Facebook, Instagram, LinkedIn, TikTok, Pinterest, Twitter (X) ✅ Content planning, scheduling & posting ✅ Caption writing & hashtag research ✅ Engagement: comments, DMs, community growth ✅ Analytics & performance reporting ✅ Scheduling tools: Buffer, Hootsuite, SproutSocial, Later, OnlySocials Content Creation & Design ✅ Blog posts & SEO-friendly content ✅ Video editing (Reels, Shorts, TikTok) with CapCut, Filmora, Adobe Premiere Pro ✅ Graphic design: flyers, logos, brochures, cards, branding kits ✅ Canva designs for social media & presentations ✅ Photoshop, Illustrator, CorelDraw for professional results ✅ Proofreading, editing & document formatting E-commerce & Shopify Store Management ✅ Platforms: Shopify, WooCommerce, eBay, Etsy, Amazon ✅ Store setup & customization ✅ Product listing optimization (titles, descriptions, images) ✅ Order processing, refunds & returns ✅ Inventory management & promotions ✅ Customer service & support Project & Business Management ✅ Project planning & task management ✅ Tools: Asana, Trello, Jira, Monday, Wrike, Notion ✅ SOP creation & workflow optimization ✅ Team management & communication ✅ Real estate support: listings, CRM updates, tenant communication ✅ Logistics/trucking admin: dispatching, load board research, scheduling Website & CRM Management ✅ WordPress management: content uploads, plugin updates ✅ Basic HTML/CSS edits ✅ CRM systems: Salesforce, HubSpot, Zoho, Pipedrive ✅ Sales funnel tracking & database management ⸻ Tools & Platforms Expertise • Productivity: Office 365, Google Workspace, Calendly, Wrike • CRM & Marketing: HubSpot, Salesforce, Zoho CRM, Pipedrive, Mailchimp, ConvertKit, ActiveCampaign, Klaviyo • Design & Editing: Canva, Photoshop, Illustrator, CorelDraw, Premiere Pro, Filmora, CapCut • Research & Data: LinkedIn Sales Navigator, Hunter.io, NeverBounce, Data Miner, Import.io, ParseHub • Project Management: Asana, Trello, Jira, Monday.com, Wrike, Notion • E-commerce: Shopify, WooCommerce, eBay, Etsy, Amazon • Social Media Tools: Buffer, Hootsuite, SproutSocial, Later, OnlySocials • Customer Support: Zendesk, Freshdesk, Gorgias, Intercom ⸻ Personal Traits ✅ Honest & reliable ✅ Detail-oriented & accuracy-driven ✅ Tech-savvy & quick learner ✅ Problem solver & decision maker ✅ Strong communication skills ✅ Friendly, approachable & professional ✅ Efficient multitasker & team player ⸻ I help businesses stay organized, scale smoothly, and save valuable time. Whether you need daily admin support, e-commerce store management, customer service, content creation, or project management, I am here to deliver results with professionalism and efficiency. Let’s connect to discuss how I can add value to your business

  • Shopify
  • Customer Service
  • Canva
  • Data Entry
  • Content Planning
  • Cards & Flyers
  • Lead Generation
  • Email Campaign Setup
  • Social Media Management
  • Online Chat Support
  • Graphic Design
  • Adobe Photoshop
  • Adobe Illustrator
  • ChatGPT
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 don’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 I’ll review your setup and suggest the most practical approach for your AI Voice Agent, AI Receptionist, chatbot, or automation system.

  • Artificial Intelligence
  • 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
  • Chatbot
  • Chatbot Development

How it works

Post a job for free Post a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

AI assistant developer hiring guide

AI assistant developers build intelligent systems that can automate tasks, enhance user interactions, and streamline business operations. From chatbots and virtual assistants to voice-enabled tools and AI-powered customer support platforms, these professionals turn complex machine learning models into practical, user-facing solutions. Businesses hire AI assistant developers to reduce manual workloads, improve response times, personalize customer experiences, and gain a competitive edge through automation.

What does an AI assistant developer do?

AI assistant developers specialize in designing, building, and deploying artificial intelligence applications that interact with users through natural language, voice commands, or automated workflows. Their work spans the full AI development lifecycle, from data preparation and model selection to deployment and optimization.

Core responsibilities typically include:

  • Building conversational AI systems. Designing chatbots, virtual assistants, and voice-enabled applications using natural language processing (NLP) and machine learning frameworks like TensorFlow, PyTorch, and LangChain.

  • Integrating AI models into existing platforms. Connecting trained models to business applications, CRMs, and messaging platforms through APIs and middleware.

  • Data preprocessing and model training. Cleaning, organizing, and preparing datasets for training, including removing errors and biases and selecting features that improve model accuracy.

  • Fine-tuning and optimizing performance. Adjusting hyperparameters, testing against validation datasets, and adapting pre-trained large language models (LLMs) for specific business use cases.

  • Deploying and monitoring AI solutions. Deploying AI assistants to production environments and monitoring for performance, latency, and accuracy drift.

  • Collaborating with cross-functional teams. Working with data scientists, product managers, and business stakeholders to match project goals to organizational needs.

The technical skill set typically includes proficiency in Python, experience with AI frameworks, familiarity with NLP libraries, knowledge of cloud platforms like AWS, Google Cloud, or Azure, and expertise in RAG pipelines and vector databases.

How to hire an AI assistant developer on Upwork

Upwork makes it easy to find, vet, hire, and collaborate with AI assistant developers at all skill levels and from all over the world. You only need to follow these four simple steps.

Step 1: Post a job

Create a detailed job post that attracts qualified AI assistant developers and sets clear expectations from the start. In your post:

  • Specify the type of AI assistant you need (e.g., chatbot, voice assistant, knowledge base agent)

  • Include required AI frameworks, languages, and tools (e.g., Python, TensorFlow, LangChain, OpenAI API)

  • Describe datasets involved, expected conversation flows, and compliance considerations such as GDPR or HIPAA

  • Define your timeline, budget range, and key performance metrics

To create a tailored job post quickly, try the Job Post Generator powered by Uma™, Upwork’s Mindful AI. Describe what you need in a few sentences, and Uma will craft a job post in seconds. You can also review general job description templates and examples, as well as AI developer job description templates, for inspiration.

Step 2: Evaluate candidates

As proposals come in, you’ll want to review them in a way that is thorough and efficient. 

  • Have Uma give instant video interviews and side-by-side comparisons

  • Use Upwork’s filters to find candidates by rate, location, and experience

  • Review proposals for signs that the candidate has understood your job post and has the skills to meet your needs

  • Prioritize developers with portfolios and case studies showcasing completed AI assistant projects, especially those deployed in production

  • Look for experience with your specific tech stack, industry, platforms, and integrations

Step 3: Interview top candidates

A quick video interview gives you the chance to ask any questions you have left for your top choices, and to get a feel for what a collaboration with them might be like.

  • Schedule and conduct interviews within Upwork messaging to get instant transcripts and summaries from Uma

  • Have the candidate walk you through a piece from their portfolio, focusing on how the candidate’s technical competency helped meet the client’s goals

  • Ask about their approach to model selection, data preprocessing, and handling edge cases

  • Discuss their experience with RAG pipelines, vector databases, and API integrations

To help keep your conversations focused and productive, you can review common interview questions for freelancers, AI developer interview questions, and machine learning interview questions.

Step 4: Define scope and begin work

Once you’ve found the right person, you can send a contract directly through the Upwork marketplace. A solid contract protects both parties and helps collaborations be successful from beginning to end.

  • Use Upwork's contract workroom, messaging, and payment protection for secure collaboration

  • Define ownership terms for code, models, and proprietary data

  • Clarify expectations for documentation, testing, and deployment

  • Choose fixed-price contracts for projects with clear deliverables, such as creating a rule-based chatbot with predefined responses

  • Separate complex projects into clear milestones, such as data gathering and processing, model selection and prototyping, development and integration, testing and optimization, and deployment and handover 

  • Choose hourly contracts for ongoing work or projects without clear deliverables, such as ongoing model performance monitoring and retraining

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring an AI assistant developer cost?

Independent professionals on Upwork base their rates according to market demand, the scope and complexity of the project, and their own skills and expertise. In general, AI developers on Upwork charge $30-$150/hour, though your exact cost will depend on the scope and complexity of your project, as well as the skill and experience of the freelancer.

The following chart lists typical prices for projects involving AI assistant developers commonly found on Upwork.

FAQ chatbot development

$1,500-$5,000 /project

Entry-level
  • Rule-based chatbot with predefined responses
  • Integration with one messaging platform
  • Basic conversation flow design

Conversational AI assistant

$5,000-$15,000 /project

Mid-level
  • NLP-powered assistant with intent recognition
  • Multi-turn conversation handling
  • API integration with CRM or helpdesk tools

Voice-enabled virtual assistant

$12,000-$35,000 /project

Expert-level
  • Speech-to-text and text-to-speech integration
  • Custom wake word and voice command processing
  • Cross-platform deployment

LLM-powered knowledge assistant

$15,000-$50,000 /project

Expert-level
  • RAG pipeline with vector database integration
  • Fine-tuned LLM for domain-specific queries
  • Guardrails for hallucination prevention

Ongoing maintenance retainer

$3,000-$10,000 /month

Mid- to expert-level
  • Model performance monitoring and retraining
  • Bug fixes and conversation flow improvements
  • Monthly analytics and optimization

FAQs about AI assistant developers

Frequently asked questions

Is hiring an AI assistant developer worth it?

For businesses looking to automate customer interactions or launch AI-powered products, hiring an AI assistant developer is a worthwhile investment. These professionals can reduce support costs, improve response times, and create personalized experiences. Businesses with clean data and defined use cases see faster ROI. For smaller needs, pre-built solutions may suffice, but custom AI assistants deliver greater flexibility and scalability.

What qualifications should I look for?

Look for proficiency in Python and experience with AI frameworks like TensorFlow, PyTorch, or LangChain. Familiarity with NLP techniques, LLM fine-tuning, and cloud deployment is important. Strong candidates demonstrate experience with RAG pipelines, vector databases, API integrations, and delivering production-ready solutions.

How long does it take to build an AI assistant?

A simple rule-based chatbot can be built in 1-2 weeks. A conversational AI assistant with NLP capabilities typically takes 4-8 weeks. Enterprise-grade assistants with custom model training and multi-system integrations may require 3-6 months.

Can an AI assistant developer work with my existing tech stack?

Yes, experienced developers work with many different technology ecosystems, connecting AI models to your CRM, helpdesk tools, messaging platforms, and cloud infrastructure using APIs and middleware. Share your tech stack details in your job post and again during the interview so candidates can confirm compatibility.