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Atul K.

Noida, India

$30/hr
4.9
162 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
Syed A.

Lahore, Pakistan

$40/hr
4.7
52 jobs

🌐🚀 MVP / SAAS Specialist Expertise in | AI Developer | RAG | LLM | AI Integration | Python | OpenAI API Integration | Artificial intelligence | Machine Learning | Langchain | Django React JavaScript | FastAPI | AI agent | AI App Development | AI bot | AI chatbot | AI Agent | Restful API | PostgresSQL | Botpress | PostHog | MCP Server | Multi-Agents/Multiple Agents | Voice AI 🔑 𝐈 𝐛𝐮𝐢𝐥𝐝 𝐚𝐧𝐝 𝐝𝐞𝐩𝐥𝐨𝐲 𝐜𝐮𝐬𝐭𝐨𝐦 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬, AI-Powered MVP, AI Healthcare Tools, AI Writing Tool, GPT Clone, Full Stack Application, Multi-Tenant 𝐚𝐧𝐝 𝐢𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐯𝐞 𝐀𝐈 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐭𝐡𝐚𝐭 𝐬𝐨𝐥𝐯𝐞 𝐜𝐨𝐦𝐩𝐥𝐞𝐱 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬, 𝐜𝐫𝐞𝐚𝐭𝐞 𝐧𝐞𝐰 𝐯𝐚𝐥𝐮𝐞, 𝐚𝐧𝐝 𝐢𝐦𝐩𝐫𝐨𝐯𝐞 𝐮𝐬𝐞𝐫 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐬. 🎁 A 100% refund, if I'm unable to meet our agreed commitments. No questions asked! 𝐊𝐞𝐲 𝐅𝐚𝐜𝐭𝐬: 🧑‍💻 8+ years of experience as a Full Stack Developer and Artificial Intelligence Specialist 🚀 50+ market-winning projects launched ⌛ Around 600 hours on Upwork 🎯 Top-Rated on Upwork 🌉𝐈'𝐯𝐞 𝐬𝐨𝐥𝐯𝐞𝐝 𝐞𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬 𝐟𝐨𝐫 𝐭𝐨𝐩 𝐜𝐨𝐦𝐩𝐚𝐧𝐢𝐞𝐬 𝐚𝐧𝐝 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐫𝐨𝐮𝐧𝐝 𝐭𝐡𝐞 𝐠𝐥𝐨𝐛𝐞 ☑️ Under Armour ☑️ Snowflake ☑️ Estateza ☑️ SearchLook ☑️ Sparrowcharts 💡 𝐖𝐡𝐚𝐭 𝐜𝐚𝐧 𝐈 𝐛𝐫𝐢𝐧𝐠 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐭𝐚𝐛𝐥𝐞? ☑️ Full Stack Development for robust and scalable web applications, including both front-end and back-end technologies ☑️ Custom Web and Application Development utilizing frameworks like Python, React, Django, React.js / Angular / Next.js / Nest / Nust / Golang and Node.js ☑️ Expertise in LLMs and ChatGPT integration to enhance application functionalities ☑️ Proficiency in RESTful APIs, GraphQL, and database management ☑️ Experience with cloud services like AWS, Azure, and Google Cloud for deployment and scaling ☑️ Strong problem-solving skills and ability to optimize user experiences and application performance 🌟𝐇𝐞𝐫𝐞'𝐬 𝐰𝐡𝐚𝐭 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐡𝐚𝐯𝐞 𝐭𝐨 𝐬𝐚𝐲 𝐚𝐛𝐨𝐮𝐭 𝐦𝐞: 🌟 Ali Hamza is in the top tier of software developers and data engineers. He is far more than an implementer; he is a strong architect. During this project set, Usama worked on data from major US corporations 🌟 One of the best developers I have ever worked with. He is always on time and does exactly what he says he will do. I could not recommend him enough. 🎯 𝐈 𝐩𝐨𝐬𝐬𝐞𝐬 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐢𝐧 𝐭𝐡𝐞 𝐟𝐨𝐥𝐥𝐨𝐰𝐢𝐧𝐠 𝐝𝐨𝐦𝐚𝐢𝐧𝐬 ☑️ Full Stack Development: ☑️ Backend: ☑️ Python ☑️ Django ☑️ Flask ☑️ NodeJs, Express.js ☑️ Rest API, SOAP ☑️ Websocket ☑️ Third party integration ☑️ Frontend: ☑️ Html5, Css3, Bootstrap ☑️ Javascript ☑️ ReactJs, Angular ☑️ VueJs ☑️ NextJs, NuxtJs ☑️ Ajax, JSON, XML, XHTML, SVG, Canvas ☑️ API integration, OpenAI API ☑️ DevOps: ☑️ CI/CD Pipelines ☑️ IaC ☑️ Docker ☑️ Kubernetes / Terraform ☑️ Elasticsearch ☑️ Cloud Computing (Azure, AWS, Google Cloud) ☑️ Version Control (Git, GitHub) ☑️ Containerization + Orchestration (Docker, Kubernetes) ☑️ Spring Boot / Java, Microservices Architecture ☑️ Real-time / Streaming / Event-driven architectures ☑️ Session Recordings / Session Replays ☑️ GraphQL / gRPC ☑️ Kafka / Redpanda (real-time streaming) ☑️ Generative Artificial Intelligence (GenAI) ☑️ Large Language Models (LLMs) ☑️ Natural Language Processing (NLP) ☑️ ChatBots and Virtual Assistants ☑️ Text to Image Modelling ☑️ Vector Databases ☑️ Retrieval-Augmented Generation (RAG) ☑️ ChatGPT ☑️ OpenAI ☑️ AI/ML (Artificial Intelligence + Machine Learning) ☑️ Multimodal AI / NLP ☑️ Agentic AI / Autonomous Agents ☑️ “Vibe Coding” / AI-first / prompt-driven dev workflows ☑️ Explainable AI / Ethical, Sustainable AI ☑️ Edge AI / On-device / Federated Learning ☑️ Web Scraping ☑️ Data Extraction ☑️ Data Scraping ☑️ Scrapy ☑️ Selenium ☑️ Beautiful Soup ☑️ Requests ☑️ Deployment and scheduling the scraping scripts on server ☑️ PostHog / Mixpanel / Amplitude / Segment (Twilio Segment) ☑️ OpenTelemetry (Datadog / Grafana / Sentry ☑️ LaunchDarkly / GrowthBook / VWO / Optimizely / Klaviyo ☑️ Airbyte / Fivetran / DBT ☑️ Auth0 / Clerk / SuperTokens / Google Auth ☑️ Stripe / Paddle ☑️ Plaid AI + Analytics Integrations ☑️ LangSmith / LangFuse – Observability and evaluation layer for LLM apps. ☑️ Weaviate / Pinecone / Qdrant – Vector DBs for AI features with analytics hooks. ☑️ Whylabs / Arize AI – ML observability & monitoring (similar to PostHog but for models). I am a Fullstack AI Developer - Python Django, React, Flask, API Integration I can help you to build: ⚡ Fast MVP Development (AI-Powered) ✅ ⚡ AI Powered SAAS Applications ✅ ⚡ AI Agent RAG Systems | AI Chatbots ✅ ⚡ Open AI API Integrations / LLM ✅ ⚡ Full stack Development (AI/ML, Django, React) ✅ ⚡ AI Workflows Automation ⚡ Voice AI tools Thank you for visiting my profile. Looking forward to working with you! I will 💲REFUND 💲, if your expectation wont meet. For reference, you can see my work and testimonials below. Lets Chat!

  • Artificial Intelligence
  • Machine Learning
  • Python
  • AI Agent Development
  • OpenAI API
  • AI Development
  • Django
  • Retrieval Augmented Generation
  • API Integration
  • JavaScript
  • React
  • PostgreSQL
  • Large Language Model
  • Chatbot Development
  • LangChain
  • API
  • LLM Prompt Engineering
  • Web Application
  • AI App Development
  • FastAPI
Guido L.

Buenos Aires, Argentina

$50/hr
4.9
46 jobs

I'm Guido, CEO of Realms, and I believe technology should be more than a tool — it should be the engine that drives your business forward. I lead a team of elite Tech Crafters dedicated to building high-impact AI and software solutions. We moved away from the traditional agency model because we believe in a fundamental truth: your business doesn't need hours, it needs outcomes. My role is to act as your strategic partner, bridging the gap between ambitious ideas and scalable, market-ready technology. At Realms, we don't just write code — we architect the future of your product. THE REALMS METHODOLOGY: ✦ Outcome-First Strategy: Most agencies bill hours. We don't sell time — we own the outcome. Every decision, every sprint, every line of code is engineered around one thing — the outcome your business actually needs to grow. ✦ Tech Craftsmanship: We combine the precision of high-end engineering with the creativity of product design. ✦ Strategic Discovery: We validate your vision through a rigorous "Tech Roadmap" phase to ensure efficiency before the first line of code is written. HOW WE WORK: 1️⃣ Discovery: We go deep into your business, your users and your real objectives — not just the features you think you need, but the outcome you actually need to achieve. 2️⃣ Strategy & Roadmap: We build a clear, prioritized plan with well-defined milestones, deliverables and budgets — so your vision, team and resources stay aligned from day one. 3️⃣ Build & Iterate: We design, develop and iterate with full transparency. You have real-time visibility at every stage — no surprises, no black boxes. 4️⃣ Launch & Support: We don't disappear at deployment. We stay involved to ensure your product performs, scales and keeps delivering results post-launch. OUR SPECIALIZED SERVICES: ✦ Custom AI & Integration Services: LLMs, RAG, Agentic workflows, NLP, Computer Vision, OpenAI/GPT, PyTorch, TensorFlow, Generative AI. ✦ Full-Stack Development & Design: React, React Native, Flutter, iOS, Android, Node, Python, PHP, AWS, GCP, Digital Ocean. UX/UI with Figma. ✦ Augmented & Virtual Reality: Unity, UI Canvas, Game Mechanics, Playfab API, Dotween. ✦ Asymmetric Web & VR Projects: Custom integrations combining web platforms with immersive VR environments. WHY LEADERS PARTNER WITH US: 🏆 100% Job Success Track Record: A testament to our commitment to excellence and consistent delivery of high-impact results. 🌟 5-Star Rating on Clutch · Top AI Company 2024: Achieved through our strategic partner Valere, an award-winning agency with a proven track record in AI and software development. 🛠️"Tech Crafters" Mindset: We take extreme ownership of every build, ensuring that the final product is as elegant as it is functional. 🚀 Focus on Impact: From startups to established leaders, we help businesses leverage technology to scale, compete and lead in their industry. If you are looking for a partner who is as invested in your results as you are — let's connect. I am personally involved in the architecture of every project we take on at Realms. Let's build your next outcome.

  • Deep Learning
  • Machine Learning
  • Software Development
  • Product Development
  • Virtual Reality
  • Augmented Reality
  • Generative AI
  • Mobile App Design
  • Digital Strategy
  • Business Development
  • Project Management
  • Generative AI Software
  • Mobile App Development
  • UX & UI Design
  • Customer Experience
Gunendu D.

Bengaluru, India

$17/hr
5.0
64 jobs

Overview: You have an AI product idea — or an existing product that needs AI built into its core. You need someone who won't just write code, but make the hard architectural decisions that determine whether your product scales or breaks at 10,000 users. That's what I do. I've shipped 5 AI-native products in the last 2 years, each running in production with real users today. Not prototypes. Not demos. Production systems handling real data, real money, and real compliance requirements. Recent results: → Built an AI conversation intelligence platform that analyzes calls across 19 dimensions in real-time — now processing hundreds of conversations daily for a US-based SaaS company → Delivered an AI medical education platform with 11 LLM-powered endpoints, integrating clinical evidence from randomized controlled trials — used by healthcare professionals for continuing education → Shipped an AI learning platform with 9 specialized AI pipelines — 500+ study hours saved for users within months of launch → Architected an AI-powered industrial support system with vector search and multi-tenant isolation — deployed across operator, technician, and admin roles for a European client What makes me different from other AI developers: Most developers bolt AI onto existing products as a feature. I architect systems where AI is a core capability — from database schema to user experience. Every project I deliver includes production infrastructure (CI/CD, monitoring, error tracking), not just application code. I also run a team at Growth Loops Technology, which means I can scale up when your project needs it — without you managing multiple freelancers. I'm the right fit if you need: → An AI-native product built end-to-end (backend, AI pipelines, deployment) → LLM integration done properly (structured output, RAG, multi-stage pipelines) → A senior architect who can own technical decisions and communicate clearly → Someone who ships on schedule and writes code that holds up in production Technical depth (for the engineers reading this): Backend: NestJS, Node.js, TypeScript, Python, FastAPI, Django AI/ML: GPT-4o, Claude, LangChain, LangSmith, Whisper, AssemblyAI Data: PostgreSQL, Redis, BullMQ, Pinecone, OpenSearch, Meilisearch Infra: Docker, GitHub Actions, AWS, Cloudflare R2, Sentry 15+ years of software engineering. Every project delivered with authentication, async job processing, multi-tier caching, and production monitoring baked in from day one.

  • Python
  • API Integration
  • JavaScript
  • Flask
  • PostgreSQL
  • React
  • Spring Boot
  • Amazon DynamoDB
  • GPT-3
  • Django
  • Full-Stack Development
  • Azure OpenAI Service
  • AI Model Development
  • AI Bot
  • Microservice
Guy P.

Marlborough, Massachusetts

$65/hr
4.9
351 jobs

AI Development & Digital Transformation | LLMs, RAG, Agentic AI, Full-Stack | Expert-Vetted Top 1% I genuinely love helping businesses build kick-ass AI and custom software products and that obsession has earned Valere an Expert-Vetted Top 1% badge on Upwork, ranking us among the top 1% of software development talent on the platform. I'm Guy, CEO and founder of Valere. After 15+ years building, consulting, and launching consumer software products (including two acquisitions, one being a 15-million user app) I started Valere to help companies become AI-first through end-to-end engineering and transformation. We walk our clients through the whole process from AI planning and assessment, discovery, product design, technical solutioning, development, deployment, team adoption, AI upskilling/ AI coaching, and ongoing improvement. My ultimate goal is to help companies become AI-first by handling the full lifecycle and providing with tangible outcomes that we can all be proud of. There’s a lot of heart that goes into building impactful products. On paper, that looks like…300+ production deployments. $900M+ in measured client impact. 94% partner satisfaction. Clients include Fortune 500 companies, Johns Hopkins University, United Rentals, Mars, iHeartMedia, and CarShield. Client platforms we've built have helped raise $70M+ in venture and institutional funding. What my team builds: ✔ AI: Agentic systems, LLM applications, RAG pipelines, NLP, computer vision, ML, predictive analytics, generative AI, deep learning ✔ Web: React, Angular, Vue, Next.js ✔ Mobile: React Native, Flutter, Swift, Kotlin ✔ Back-end: Python, Node.js, .NET, PHP ✔ Cloud & DevOps: AWS, Azure, Google Cloud, Docker, Kubernetes ✔ Data: PostgreSQL, MongoDB, Snowflake, dbt ✔ Design: UX/UI, design systems, accessibility Who I work with: Venture-backed startups, PE-backed companies, mid-market businesses, and Fortune 500 enterprises across healthcare, finance, sports, fitness, education, and operations. Why clients choose us: ⭐️ AWS Advanced Tier & recognized AI/ML Partner ⭐️ Ranked #2 AI Services Provider on G2 a verified enterprise reviews ⭐️ Clutch Global Awards 2026 Top ML & AI Provider | Top 15 AI/ML worldwide ⭐️ Expert-Vetted Top 1% Agency on Upwork and featured in Upwork's 2023 Q2 Shareholder Report ⭐️ Selected for Upwork's Customer Advocacy Program, invited speaker at Upwork AI events ⭐️ The Manifest: Most Reviewed Developer 2024 ⭐️ Recognized Top 5 Trusted AI Agency by Tom Popomaronis Our AI transformation model: We transform companies into AI-first organizations through three tracks: Build (end-to-end AI and custom software development), Educate (AI workforce readiness via Valere Learning and General Upskilling through Evolve, our social platform), and Scale (proprietary products including Conducto, our agentic AI orchestration framework, and Dactic, our research automation platform). 225+ global professionals: AI Strategists, Data Scientists, Generative AI Developers, Agentic AI Engineers, UX Designers, Product Managers. U.S.-based oversight, 24/7 global coverage. Each client I work with gets decades of direct experience, through our engineers and through processes iterated on for YEARS across hiring, engineering, design, and QA. I'm OBSESSIVE about excellence. Anything less is unacceptable, which is why I only take on work we can execute at the highest level. If you have read this far, please note I appreciate you taking the time. I would love to learn about what you're building. Send me a message. Let’s chat!

  • Artificial Intelligence
  • Machine Learning
  • Python
  • Hybrid App Development
  • React Native
  • Swift
  • React
  • Mobile App Development
  • Node.js
  • Flutter
  • Enterprise Software
  • Generative AI
  • Software Development
  • AI Consulting
  • AI Development
  • AI Platform
  • AI Security
  • AI Implementation
  • AI App Development
  • AI Product Management
Pavlo P.

Kyiv, Ukraine

$40/hr
5.0
10 jobs

I’m Pavlo Pohuliailo, Founder of Deveteria (AI Development Team) - raised $100k in the financial year 2025-2026) Over the last few years, I’ve led 20+ AI solutions from idea to enterprise-grade production. With a team of 50+ experienced AI Engineers, AI Agent Developers, AI Researchers, IOS Mobile developers (Flutter, React Native), Frontend developers, Backend developers, Product Manager, DevOps, MLOPS, and many more. ✅ We are a fit if: Your company has a minimum of 5+ people already executing. You are the direct decision maker or can approve technical direction. Your project budget is at least $5,000 USD+ for the first phase. You aim for at least $10,000+ measurable efficiency or operational savings within 90 days from AI deployment. You are ready to begin within the next 2 weeks. ❌ We are not a fit if: Pricing is the primary factor above outcome, speed, and quality. You expect provable meaningful results inside 14 days or less. Your business falls under gambling, adult, or similar restricted categories. You are not collaborative or not open to strategic guidance. ⚡ Real Results ✅ TOINGG – Handles 10,000+ AI calls/min with 99.9% uptime ✅ AI Outreach Engine – Converted 200 cold messages → 8 booked meetings ✅ Trusted globally – by startups, agencies & enterprises across the US, UK, UAE, Australia and many more.. 🧩 Our Expertise 🔊 AI Voice & Communication - AI calling agents (TOINGG – our own product) - Voice interviewers & virtual receptionists - WhatsApp + Voice chatbot integrations - Sentiment-aware, memory-powered bots 🧠 Autonomous AI Agents - Multi-agent systems for recruiting, trading & operations - GDPR & EEOC-compliant recruiter AI - RAG pipelines + LLM-based decision logic - Hybrid human + AI workflows 🛍️ eCommerce & Retail AI - Shopify-integrated voice bots - Dynamic product recommendation systems - AI-powered sales & support automation 📊 AI Analytics & Insights - Personalized recommendation engines - AI-driven dashboards & business forecasting - Automated reporting with natural-language summaries 💼 Custom AI Use-Cases - Legal AI (Spanish law databases – RAG-based) - AI content & script generators for marketing - Healthcare marketplaces with smart matching 💡 How We Help 🔨 End-to-End Product Development - From idea → MVP → scale 👥 Team Augmentation - Add our vetted AI engineers or full dev pod to your team ⚙️ Optimize or Scale Existing Systems - We take over, refactor, and scale existing products seamlessly 🤝 Why Teams Work With Us ✅ Proven AI & Product Experience – not just prototypes, we ship in production ✅ Startup-Minded Speed – we build like cofounders, not contractors ✅ Enterprise-Grade Quality – security, compliance, uptime built-in ✅ Transparent Estimates – no surprises, every milestone defined ✅ Expert-Led Team – 32 vetted AI engineers & product specialists 💬 Let’s Talk We usually respond within minutes. Whether you’re building a new AI product or scaling an existing one — let’s make it production-ready. 📩 Message me today and let’s bring your AI vision to life.

  • NestJS
  • Node.js
  • Chatbot Development
  • n8n
  • Supabase
  • Next.js
  • Amazon Web Services
  • Full-Stack Development
  • React Native
  • web3.js
  • Blockchain
  • PostgreSQL
  • AI Bot
  • React

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Resources to help you hire

Cost to hire a AI Developer

Cost to hire a AI Developer

Explore typical AI Developer rates and what businesses pay to hire top talent.

AI Developer job description template

AI Developer job description template

Get tips to write a job post that attracts qualified AI Developers.

AI Developer interview questions

AI Developer interview questions

Top interview questions to help you hire the right AI Developers, faster.

AI developer hiring guide

Artificial intelligence (AI) developers bring intelligent automation, predictive insights, and scalable solutions to businesses across industries. Whether you're building recommendation systems for e-commerce, enhancing diagnostic tools in health care, or developing generative AI features in SaaS, experienced professionals can support your broader software development goals using cutting-edge AI technologies.

What does an AI developer do?

An AI developer designs, builds, and deploys artificial intelligence and machine learning systems to automate tasks, analyze data, and support decision-making. These professionals often work alongside data scientists, back-end developers, and cloud specialists to bring intelligent features to digital products. Their expertise spans a variety of AI applications, from neural networks and natural language processing to computer vision and predictive analytics.

Here are some of the core responsibilities of an AI developer:

  • Develop AI solutions. This includes building, testing, and integrating AI-powered features into web or software platforms

  • Create and train algorithms. Developers train models using relevant datasets to solve problems and improve performance over time

  • Collaborate across technical teams. They work closely with data scientists, back-end developers, and DevOps engineers to ensure efficient deployment

  • Build custom AI-powered tools. These tools support real-time use cases that enhance user experience across platforms

  • Manage machine learning pipelines. They handle varied tasks from analyzing data to refining training loops and optimizing model performance

How to hire an AI developer on Upwork

Upwork offers a streamlined process for hiring skilled AI developers tailored to your specific needs. By following these steps, you can connect with professionals who align with your project goals and business vision.

Step 1: Post your project

The quality of your job posting directly influences the caliber of AI developers who apply. Investing time up front to articulate your project requirements helps filter out mismatched candidates and accelerates the path to finding someone with the right expertise.

  • Start with a detailed job post that clearly outlines your goals, tech stack, and expectations

  • Define your AI needs, mentioning use cases such as developing computer vision tools, fine-tuning machine learning models, or building AI-powered automation workflows

  • Specify the tech stack, highlighting frameworks (e.g., TensorFlow, PyTorch), platforms (e.g., Azure, AWS), and programming languages (e.g., Python, Java)

  • Use Upwork's AI engineer job description template as a starting point for ideas on content and format

To streamline this step, try the Job Post Generator, powered by Uma™, Upwork's Mindful AI, to instantly draft a detailed job post that attracts the right AI developers.

Step 2: Review proposals

A systematic approach to reviewing proposals ensures you identify candidates with both the technical depth and practical experience your AI project demands.

  • Compare freelancer profiles based on years of experience, portfolio quality, and client feedback

  • Evaluate project relevance, looking for developers who have worked on similar AI projects or within your industry

  • Check certifications and tools, prioritizing candidates experienced with custom AI development, cloud platforms, and relevant APIs

  • Assess communication skills, as strong collaboration is critical in AI development, especially for cross-functional teams

You can use Upwork’s instant video interviews to screen applicants for a best-fit shortlist.

Step 3: Conduct interviews

The interview stage validates technical expertise and reveals how well a candidate's working style aligns with your team's needs. Use Upwork's AI developer interview question guide for examples of thoughtful interview questions to assess problem-solving abilities and technical fit.

  • Explore past work: "Tell me about an AI model you deployed in production. What challenges did you encounter?"

  • Test technical depth: "How do you choose between PyTorch and TensorFlow for a new AI solution?"

  • Understand collaboration styl:. "Describe how you worked with data scientists or product managers on a previous project."

Upwork Messages allows you to schedule and conduct live video interviews on the platform, with call transcripts and summaries available after the calls.

Step 4: Hire and collaborate

Before starting the work, you’ll want a firm contract in place. Establishing a structured collaboration framework from day one sets the foundation for successful project delivery.

  • Use Upwork's built-in tools to manage contracts, timelines, and communication

  • Set clear milestones, breaking projects into phases like onboarding, model training, and deployment

  • Use version control and tracking, incorporating GitHub or similar tools to collaborate efficiently.

  • Stay aligned on goals by cheduling regular check-ins to ensure progress and deliverables match expectations

How much does hiring an AI developer cost?

The cost to hire AI developers varies based on experience level, location, and project complexity. On Upwork, AI developers generally charge $30-$150 per hour. Consider these project-based costs as you budget for defined deliverables for your needs: 

Basic AI chatbot development

$1,000-$3,500 /project

Entry-level
  • Rule-based chatbot prototype
  • Basic NLP integration
  • Documentation and testing

Custom machine learning model

$3,500-$8,000 /project

Mid-level
  • Model training and validation
  • Dataset preprocessing
  • Performance optimization

Computer vision application

$8,000-$15,000 /project

Mid-level to expert
  • Image classification system
  • Object detection integration
  • API deployment

Recommendation engine development

$10,000-$20,000 /project

Expert-level
  • Personalization algorithms
  • Real-time processing
  • A/B testing framework

Enterprise AI solution

$20,000-$50,000+ /project

Expert-level
  • End-to-end LLM fine-tuning
  • Multisystem integration
  • Scalable cloud deployment

Frequently asked questions

Is hiring an AI developer worth it?

Hiring an AI developer can significantly enhance your business by automating processes, enabling data-driven decisions, and unlocking innovation. According to the 2025 McKinsey Global Survey on the state of AI, 64% of organizations report that AI is currently enabling their innovation.

What types of businesses benefit most from AI developers?

Businesses that benefit most from hiring AI developers include startups, tech companies, health care providers, and financial institutions. A Gartner survey found that CIOs expect by 2030, 75% of all IT work will be done by humans augmented with AI.

How long does it take to develop an AI application?

Most AI applications take between three and nine months to go from concept to a working product. Simple proofs of concept might take four to eight weeks, a minimum viable product (MVP) typically requires three to four months, and a full-scale solution takes six to nine months.

What ongoing support do AI systems require?

AI systems require regular updates to maintain performance and adapt to new data. Developers often provide maintenance services like retraining models, optimizing pipelines, and updating codebases. For mission-critical systems, schedule periodic reviews, especially if the AI handles real-time functions like fraud detection.

What skills should I look for when hiring AI developers?

When hiring an AI developer, look for expertise in Python, machine learning frameworks like TensorFlow or PyTorch, and cloud platforms like Azure or Google Cloud. Other key skills include knowledge of NLP, computer vision, and neural networks.

How can AI developers work with my existing systems?

AI developers can integrate new solutions into your existing systems using APIs, cloud services, or custom adapters. They can also work within your development team's existing tech stack and coordinate with in-house developers to ensure smooth onboarding.

What are common challenges in AI development?

Common challenges in AI development include sourcing high-quality datasets, managing compute resources, and translating business goals into AI workflows. To mitigate risk, define your problem clearly in the job description and hire AI developers with proven experience in similar projects.

What are the critical ethical and regulatory considerations AI developers handle?

AI developers handle ethical and regulatory considerations including model transparency, fairness, and compliance with data privacy laws like the EU AI Act. Developers are often responsible for bias testing, consent management, and responsible data sourcing.