Hire the Best AI Evaluation Engineers

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Based on 2,564 client reviews
Abdul A.

Woodbridge, Virginia

$80/hr
4.9
107 jobs

A founder comes in with a big AI idea Maybe it is a chatbot for customers Maybe it is an internal copilot for the team Maybe it is a workflow that could save hours every week Maybe it is an investor demo that needs to look real, work smoothly, and prove the idea fast At first, the idea sounds simple Then the real questions start: Will the AI give reliable answers? Can it work with our actual data? Can users trust it? Can we launch it without wasting months? Can this become a real product & not just another cool demo? That is where I help I turn AI ideas into clear, working products that solve real business problems I help startups, founders, and growth teams build: ✅ Investor-ready AI proof of concepts ✅ MVPs and v1 AI products ✅ RAG apps and knowledge copilots ✅ AI agents and workflow automation ✅ Chatbots that answer from real company data ✅ Internal tools that save time and reduce manual work My job is not just to “build with AI.” My job is to help you figure out what should be built, what can be built, and how to make it useful enough for real users. 💰 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 𝐈 𝐇𝐚𝐯𝐞 𝐇𝐞𝐥𝐩𝐞𝐝 𝐂𝐫𝐞𝐚𝐭𝐞 ✅ Helped clients raise $3M+ through AI-powered growth ✅ Built 30+ AI systems, from AI agents to insight engines ✅ Drove a 17% revenue increase in 7 months for a US startup ✅ Helped products impact 300,000+ users ✅ Delivered 90+ successful projects on Upwork The best AI product is not the one with the most features It is the one that solves the right problem, uses the right data, and gives people a reason to use it again If you have an AI idea and want to turn it into something real, click the “Message” button and let’s talk

  • Artificial Intelligence
  • AI Development
  • AI Chatbot
  • AI Agent Development
  • AI Bot
  • AI Data Analytics
  • AI App Development
  • Python
  • Machine Learning
  • API Integration
  • Data Engineering
  • AI Builder
  • AI Consulting
  • LLM Prompt
  • ChatGPT
Vivekjyoti B.

Bengaluru, India

$89/hr
4.9
115 jobs

Once an Astrophysics Researcher, now a 3× AI Founder. I turned curiosity about the universe into AI systems that drive measurable business outcomes. I’m Vivekjyoti Bhowmik, Founder of TOINGG an AI Communication OS and PGAGI, an AI consultancy building production-grade AI systems for businesses across the US, UK, GCC, UAE, Australia, and India. Over the last few years, my team and I have built 80+ AI systems across industries. - Real production systems with users, revenue, workflows, and business impact. We specialize in building AI systems that are: → Enterprise-grade → Multi-tenant → Scalable → Secure → Integrated into real business operations → Built for ROI, not experimentation One of the platforms we helped build, Branify, crossed 50,000+ live users within one month of launch in 2026 may. Across our portfolio, more than 70% of the products we’ve built are live, used by real customers, and have paying users. Today, we don’t just “build AI.” We implement AI into business workflows to generate ROI within 90 days. What We Actually Do We design and deploy AI systems that replace manual work, increase conversion, and reduce operational load. → Turn inbound leads into qualified meetings automatically → Replace repetitive operations with AI-driven workflows → Build AI systems on top of your existing stack — CRM, WhatsApp, ERP, databases, spreadsheets, and internal tools → Create decision systems that improve revenue, not just dashboards → Build scalable AI products with multi-tenant architecture, role-based access, usage tracking, and production monitoring Real Business Impact ✅ AI Communication System — TOINGG handles high-volume AI calling workflows with scalable infrastructure and 99.9% uptime focus ✅ Branify — 50,000+ live users within one month of launch ✅ Outreach System — 200 cold messages converted into 8 qualified meetings and $7million sales in pipeline ✅ Global Clients — US, UK, UAE, GCC, Australia, and India ✅ 70%+ of products built are live with real users and paying customers Revenue & Sales Systems We build AI systems that help businesses convert more leads without increasing manual workload. Examples: → Lead comes in → AI qualifies the lead → Tags them as HOT / WARM / COLD → Books a call → Updates CRM → Hands off to the sales team only when needed This helps your team focus on high-value conversations instead of repetitive follow-ups, lead sorting, and data entry. Operational Automation We automate internal workflows that usually consume hours of manual work. Examples: → PDFs, Excel files, emails, and forms processed automatically → Data cleaned, structured, and pushed into CRM / ERP / Google Sheets → Missing data, delays, or incorrect entries detected in real time → Alerts and tasks triggered automatically → Humans involved only for approvals, exceptions, and critical decisions Data → Decisions We build AI systems that execute and make desicions. They trigger action. → Forecasting → Automated reporting → Business intelligence with execution layer → Decision support systems → AI dashboards connected to workflows Custom AI Products For founders, startups, and growing businesses, we build complete AI products from scratch. This includes: → Multi-agent architectures system → Multi- model RAG pipelines (scalable) → Enterprise-grade SaaS platforms → Multi-tenant backend systems → AI workflow automation → Role-based dashboards → Voice AI and communication systems → Scalable APIs and infrastructure We Are a Fit If ✔ Your business is doing minimum $1million in ARR ✔ You already have operations running — 20 people team, leads, data, customers, or workflows ✔ You want to implement AI into real business processes ✔ You need scalable, production-grade systems ✔ You care about outcomes, speed, and execution Not a Fit If ✖ You are exploring AI just to try it ✖ Price matters more than business outcome ✖ There is no clear use case or objective ✖ You are not ready to execute fast Why Founders Work With Us → We think like partners, not developers → We focus on outcomes first, AI second → We build systems that integrate into your business, not sit outside it → We understand product, architecture, AI, and business ROI together → We have experience building systems used by millions of real users If you are looking to increase revenue, reduce manual work, or scale operations using AI, message me. We’ll map your workflow, identify the ROI opportunity, and show you exactly what should be built.

  • Artificial Intelligence
  • Machine Learning
  • Python
  • AI Consulting
  • AI Development
  • iOS Development
  • Flutter
  • Deep Learning
  • AI Trading
  • AI Chatbot
  • AI Marketplace
  • AI App Development
  • AI Mobile App Development
  • AI Product Management
  • AI Agent Development
Rahul K.

New Delhi, India

$25/hr
4.5
120 jobs

📩 𝗟𝗲𝘁’𝘀 𝗯𝘂𝗶𝗹𝗱 𝘆𝗼𝘂𝗿 𝗻𝗲𝘅𝘁 𝗔𝗜 𝗯𝗿𝗲𝗮𝗸𝘁𝗵𝗿𝗼𝘂𝗴𝗵 — 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝘁𝗼 𝗴𝗲𝘁 𝘀𝘁𝗮𝗿𝘁𝗲𝗱 𝘁𝗼𝗱𝗮𝘆. 🔹 Availability: Full-time (𝟰𝟬–𝟱𝟬 𝗵𝗿𝘀/𝘄𝗲𝗲𝗸) | Open to long-term and enterprise AI projects. 🔹 Trusted AI/ML Engineer with 𝟴+ 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. 🔹8+ Years of Experience as a Fullstack AI/ML Developer. 🔹 $200K+ Billing done over upwork. 🔹 14000+ Hours on Upwork | 60+ Successful Projects Delivered. 🔹 Worked with Fortune 100 Companies. 🔹 Performance-Driven, Scalable & SEO-Optimized Web Applications. 𝗜’𝗺 𝗥𝗮𝗵𝘂𝗹 𝗞𝗵𝗲𝗿𝗮, 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗔𝗜/𝗠𝗟 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 & 𝗜 𝗵𝗮𝘃𝗲 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝘄𝗶𝘁𝗵 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗮𝗻𝗱 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁... 🔹 Fine Tuning: Specialized in persona writing, QnA, medical, legal using mistral, llama3 🔹 LLM Synthetic Dataset Generation 🔹 LLM Evaluation Framework 🔹 LLM Deployment: On Cloud platforms like RunAPod, AWS, GCP 🔹 AI Agents / Voice Bots: Proficient with CrewAI/AutoGen, Amazon Polly, Deepgram. 🔹 OS LLM Deployment: On AWS/GCP/RunPod using SkyPilot (vLLM/TGI) 🔹Python (Flask, Fast API, Django, GPT API, Pytest, BeautifulSoup, Selenium) 🔹 Web Scraping, Data Mining, Web Crawling, Data Parsing, Automation, Bots 🔹 Fullstack (JavaScript, MongoDB, Express.js, React, Node.js) 🔹 DevOps - Ansible, Docker, Kubernetes, GitLab CI\CD (AWS/Azure/DO/GCP). 🔹 API integration: Binance API, Telegram API, OpenAI API, BetFair API, OddsJam API, Stripe API. 🔹 API development: RESTful API, Web Services, HTTP Methods, JSON/XML, API Security, OAuth, API Documentation, API Testing, Postman, Swagger, API Gateway, Microservices, Endpoint Design 📌 𝗠𝘆 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲 📌 ⚙️ Web Scraping | Data Mining | Data Extraction ⚙️ Web Automation | Data Cleaning | Data Collection ⚙️ Crypto Trading Automation | Automate Trading Strategy ⚙️ Interactive Brokers Bot | Crypto Trading Bot | Dashboard ⚙️ Data Analysis | Data Visualization | Data Entry ⚙️ Auto Fill Web Forms (Just a click away!) ⚙️ Merge Multiple CSV Files into a Master File ⚙️ Custom Scripting for Your Specific Needs 𝗠𝘆 𝗦𝗸𝗶𝗹𝗹𝘀𝗲𝘁: ⤵️ AI Agents, Voice Agents, CrewAI, AutoGen, Hugging Face, LLaMA 3, Mistral 7B, PEFT, LoRA, QLoRA, Prompt Engineering, RAG Pipelines, LangChain, Vector Databases, FastAPI, Flask, Django, Streamlit, Azure OpenAI, OpenAI API, vLLM, GPTQ, Trading Bots, Binance API, Telegram Bot API, Python, Selenium, Scrapy, Playwright, BeautifulSoup, Regex, REST APIs, Pandas, NumPy, Scikit-learn, PostgreSQL, Firebase, MongoDB, Data Analysis, Data Engineering 📌 𝗔𝗜 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 & 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻𝘀:📌 🔹𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀 / 𝗩𝗼𝗶𝗰𝗲 𝗔𝗴𝗲𝗻𝘁𝘀: CrewAI, AutoGen, Amazon Polly, Deepgram. 🔹L𝗟𝗠 𝗙𝗶𝗻𝗲𝘁𝘂𝗻𝗶𝗻𝗴 & 𝗧𝗿𝗮𝗶𝗻𝗶𝗻𝗴: PEFT, LoRA, QLoRA, RLHF, DPO with Unsloth, Axolotl, Hugging Face. 🔹𝗢𝗽𝗲𝗻-𝗦𝗼𝘂𝗿𝗰𝗲 𝗟𝗟𝗠𝘀: LLaMA 3, Mistral 7B, Mixtral 8x7B. 🔹𝗙𝗮𝘀𝘁 𝗜𝗻𝗳𝗲𝗿𝗲𝗻𝗰𝗲 & 𝗦𝗲𝗿𝘃𝗶𝗻𝗴: vLLM, TGI, DeepSpeed. 🔹𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: API-first architecture, Streamlit, Gradio, LangChain, CrewAI. 🔹𝗣𝗿𝗼𝗺𝗽𝘁 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 & 𝗥𝗔𝗚 𝗣𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀: Custom GPT-4 workflows, Multi-agent orchestration, vector search integration. Quantization & Optimization: AWQ, GPTQ, GGUF, GGML. I believe in creating lasting partnerships with my clients by delivering projects on time and exceeding expectations. I look forward to bringing my technical expertise and passion for software development to your project and making a meaningful impact. Thanks Rahul Khera

  • AI Bot
  • AI Chatbot
  • AI Platform
  • AI Development
  • AI Code Generator
  • AI Agent Development
  • AI Mobile App Development
  • AI Image Generation
  • AI Text-to-Image
  • AI Model Development
  • AI Implementation
  • AI Text-to-Speech
  • AI Builder
  • AI Policy
  • AI Trading
David G.

Barcelona, Spain

$90/hr
4.9
230 jobs

✅ Top 1% part of Upwork's Expert-Vetted program | NO AGENCY SOLO DEVELOPER 🎖️ 8 years+ of experience in Data Science 🏅 180+ Upwork Projects 💯 Less than 1 Hour Response time My specialty is to take your business problem and find a suitable end to end solution using AI and programming tools from Python, R, JavaScript programming languages. My extensive experience and wide skillset from data acquisition, model training to production grade application or REST API development will save you time and costs (material or psychological i.e. trying to find developers to make MVP, organize and support communication within team). AI Agentic systems are overtaking markets with potential impact on various businesses and creating opportunities to utilize. My skills in AI Agentic system development using Langchain, LangGraph, CrewAI, Autogen, RAG, MCP, Retell.ai, Elevenlabs will give you opportunities to cut costs and optimize your business operations. My skills include machine learning, deep learning, computer vision, web scraping, data engineering, web development, and data visualizations. I can create interactive web applications and dashboards using Python's Dash framework and R's shiny package so you will be able to observe, analyze and present various aspects of your business and other activities in practical ways. My expertise also includes the development of graphical user interface GUIs with Python's Kivy framework. In Computer Vision, my skills include image classification, object detection, and image segmentation with Python tools such as Tensorflow, Keras, CNNs (LeNet, AlexNet, VGG1619, InceptionV3, ResNet50), SSD, YOLO, TFOD, and Mask R-CNN. Importantly, I have skills in math and statistics essential for understanding processes behind code and interpreting outcomes from it. I have done my MBA with a focus on data science. I have been working as an accountant for around five years, including a member of the Big Four and as Data Scientist in a local IT company focused on DS. Thus, I understand finance from theoretical and practical sides and can apply code to analyze vast amounts of financial or other data efficiently. Considering my previous experience, my domain knowledge in finance, marketing (CTR, CLV), process optimization, and other business areas, I will focus on understanding your business goals and implementing solutions to make them come true. My skills include: ✅ Data Science ✅ Machine Learning ✅ Deep Learning ✅ Algorithmic Trading ✅ Generative AI ( Langchain, IIamaIndex, LangGraph, LangSmith, HuggingFace, StableDiffusion, Midjourney, OPEN AI, CHAT GPT4, CHAT GPT3.5, Mistral7B, Gemini, Cursor, Ollama, CrewAI, AutoGen, MCP, Google MCP Toolbox for Databases) ✅ Prompt Engineering (ICO, TESSA, ReAct, Chain of Thought, Map Reduce, Refine) ✅ AI Agents, Inbound & Outbound & Batch Calls, Chatbots, RAG, Conversational Agents, VAPI, Retell.ai, make.com, gohighlevel, n8n, telnyx, twilio ✅ Full Stack Development (React, React Native, Next.js) for AI integration ✅ Interactive Visualizations/Dashboards ✅ Data Engineering (MySQL, MongoDB, PostgreSQL, BigQuery, Oracle, SQLServer, Pinecone, ETL) ✅ Python, R, SQL ✅ Object Oriented Programming (OOP) ✅ PEP-8 (pylint, isort, flake8, autopep, black, docstrings, pydocstyle, mkdocs) ✅ Web development (interactive dashboards Dash) ✅ Bot Development (Telegram) ✅ Graphical User Interfaces (GUI) Kivy ✅ Big Data (Spark) ✅ Recommender Systems ✅ DevOps (ML Deep Learning model deployment on cloud, TDD, AWS, GCP, Azure, Docker, REST API) ✅ OCR ✅ Computer Vision ✅ Audio Processing ✅ Natural Language Processing NLP (Bert, fastText, Langchain) ✅ CNN (LeNet, AlexNet, VGG1619, InceptionV3, ResNet50) ✅ Object Detection (R-CNN, SSD, YOLO, TFOD API) ✅ Image Segmentation (Mask R-CNN) ✅ Transfer Learning ✅ Time Series Analysis (ARIMA, SARIMA, LSTM, PROPHET) ✅ OpenCV ✅ Educational Tutorials ✅ Web Scraping ✅ Web Crawling ✅ API Clients ✅ Keras, Tensorflow, PyTorch ✅ Dash, Shiny, Plotly, Streamlit, React, Next.js ✅ Pandas, Numpy, Scipy, Scrapy, Selenium, requests, ggplot2 ✅ IOT (Raspberry Pi) ✅ REST API (Google Ads, Google Analytics, FB/META API, Stripe, CCXT, OPEAI etc.) ✅ REST API development (Flask, FastAPI)

  • Python
  • R
  • Tesseract OCR
  • Computer Vision
  • Deep Learning
  • Data Science
  • Machine Learning
  • Dash
  • R Shiny
  • Generative AI
  • AI Chatbot
  • Stable Diffusion
  • React
  • Next.js
  • React Native
Bruce M.

Wichita Falls, Texas

$100/hr
4.6
152 jobs

I’m Bruce Meek — a Certified Prompt Engineer and AI implementation consultant focused on practical LLM systems, not prompt-only theory. I help businesses design and build GPT assistants, RAG workflows, AI agents, chatbot logic, and workflow automations that connect to real business processes. That usually includes prompt architecture, retrieval planning, knowledge-base structure, workflow logic, testing, and clear handoff documentation. A lot of AI projects get stuck because the prompt sounds good in a demo but breaks in real use. My work is built around making the system usable: clean instructions, reliable inputs, grounded answers, repeatable workflows, and a clear path from idea to working tool. A few examples of where I can help: - Custom GPT and OpenAI assistant workflows - RAG and internal knowledge assistants - AI chatbot and customer support workflows - AI agent and automation planning - Prompt audits, prompt cleanup, and evaluation - AI product scoping, design docs, and delivery planning I’ve completed 120+ Upwork projects and 1,000+ hours across prompt engineering, generative AI consulting, GPT assistant builds, AI workflow design, and project management. I’m also the founder of ArcanEdge.ai, where we focus on practical generative AI systems, conversational workflows, retrieval-driven tools, and LLM automation. For larger builds, I can also help coordinate development support through ArcanEdge when the project needs more implementation bandwidth. If you need someone who can help shape the AI workflow, build the prompt system, and keep the project grounded in a usable outcome, I’d be happy to talk.

  • Prompt Engineering
  • LLM Prompt Engineering
  • AI Agent Development
  • Retrieval Augmented Generation
  • OpenAI API
  • AI Chatbot
  • Conversational AI
  • Chatbot Development
  • AI App Development
  • Automated Workflow
  • Generative AI
  • Large Language Model
  • API Integration
  • AI Consulting
  • AI Product Management
Yahya A.

Sepang, Malaysia

$35/hr
5.0
10 jobs

Most businesses are sitting on valuable data, they just don't know how to use it yet. I help founders, managers, and growing businesses turn that data into clear decisions, accurate predictions, and real results. I work with businesses to solve practical problems using data: forecasting outcomes, understanding customer behavior, automating repetitive analysis, and building intelligent systems that save time and reduce guesswork. - Turning messy, overwhelming data into clear, actionable insights - Building prediction models with 87%+ accuracy that help you plan ahead with confidence - Automating manual reporting and analysis to save your team hours - Identifying patterns in customer data to support smarter business decisions - Delivering results you can actually act on, not just technical reports A few things I'm proud of: - ⭐ 100% Job Success Score across all completed projects on Upwork - 🎯 Built prediction models achieving 87% accuracy on real-world data - ✅ 5-star reviews on every completed client engagement across multiple platforms - 📊 Delivered solutions across healthcare, education, and business analytics I focus on practical solutions, not just theory. Every project I take on is built around your specific business goals and designed to fit into how your team already works, no unnecessary complexity, just results. If you're ready to make your data work for you, I'd love to hear about your project. Let's talk.

  • Machine Learning
  • Deep Learning
  • Predictive Analytics
  • Data Science
  • Python
  • R
  • Neural Network
  • TensorFlow
  • PyTorch

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