Hire the Best PrimeFaces Specialists

I build AI-powered products and take them from idea to scale. 🚀Hey! I'm Juan. Product-focused full-stack engineer, 10+ years shipping software that real users depend on. Focused on building and shipping complete products rapidly using AI-augmented development workflows. Experienced in going from idea → design → code → deploy within days using modern tooling and custom integrations. I have a bachelor's degree in Computer Science and over 10 years of experience. These days most of my work is putting LLM features into production, OpenAI and Claude integrations, AI agents, custom MCP servers, on top of Next.js, NestJS and AWS. I help my clients to create apps from scratch to MVP and production-ready, specializing in AI-augmented development workflows for rapid product delivery, enabling end-to-end MVP creation in weeks. 🎈 🎊 🚀 I work with passion and compromise. 🙌 I'm a🔝freelancer with 100% positive feedback 🎉 I specialize in Backend, Frontend, and deployment on AWS or other cloud providers. I work closely with startups and manage every step required to create the best product. Most importantly, I love challenges! What are you waiting for? Turn your idea into reality! 🚀✅ In my last project I reached more than 300k live users and 500k active IoT devices across 90 countries! ☑️ Rapid product prototyping using Cursor and Claude Code with custom MCP integrations ☑️ Design-to-code workflows with Figma and MCP servers ☑️ Repository-aware development with GitHub integrations ☑️ Rapid MVP generation using Claude Code, Cursor, Bolt.new and Replit ☑️ UI and product prototyping with Google Stitch and Figma Make ☑️ Building custom MCP servers to extend AI agent capabilities and automate development workflows ❗️Main technologies in which I have worked: ☑️ React. ☑️ Next.js Server Actions / App vs Pages. ☑️ React Native. ☑️ Expo. ☑️ SuperWall, RevenueCat. ☑️ Meta Ads, AppsFlyer. ☑️ PWA. ☑️ RTK, Redux, Thunks. ☑️ Flutter. ☑️ Angular JS, Angular 5. ☑️ Ionic. ☑️ HTML5, JS, TS, Css, Scss, ES6. ☑️ Photoshop Illustrator, design knowledge. ☑️ Java SE, Java EE, Primefaces, Spring, Hibernate, JPA. ☑️ Node JS, Express, MongoDB, Mongoose, GraphQL. BullMQ. ☑️ NestJS. ☑️ Serverless, Claudia JS. ☑️ Microservices. ☑️ PM2. ☑️ Wildfly, Jboss servers. ☑️ Oracle, MySQL, PostgreSQL. ☑️ Docker. ☑️ Linux, MacOS. ☑️ AWS, GCP, Heroku. ☑️ AWS CDK, SAM, Lambda, S3, ECS, EC2, SES, SNS, KMS, App Runner, API Gateway and more! ☑️ Supabase and Firebase. ☑️ LLM Models and chatbot integrations. ☑️ Software patterns. ☑️ Scrum, Agile development. ☑️ Stripe payments, MercadoPago API. ☑️ E-commerce platforms. ☑️ Headless CMS integrations using Medusa JS. Worked on source code project. ☑️ Zamp API. ☑️ LogTo, KeyCloak, Auth0 integrations. ☑️ Web scrapping. N8N workflows. ☑️ Retool. ☑️ AI Platforms - Custom AI Agents, Serper API, PydanticAI, LangChain, CrewAI, LLM structured outputs, Encrypted AI chat platforms, OpenAI, Claude and Replicate SDK integrations. ☑️ FastAPI. ☑️ Envelop, Symmetric, AES, RSA, Hybrid encryption. ☑️ BunnyCDN, Cloudflare, CloudConvert. ☑️ MixPanel. ☑️ Novel.sh. All my clients are happy 😃 with my services, 5 stars ⭐️⭐️⭐️⭐️⭐️ in each project I have done. 💯success score: ✅"Juan is a great professional and coder. Looking forward to working together in the future." ✅"Juan is a great developer with good communication skills. He demostrated great knowledge in React/Redux and node.js. He also demostrated great skills to adapt to things he never done before like audio processing and electron. I look forward to working with him in the future!" ✅"Juan is great developer, quick and good to resolve any issues in installation and similar. He helped with everything, and we solved everything in this application that he did ionic, angular, and node. Perfect." And more coming... 🎉🎊 Please contact me for further details! I will help and contribute to your project and your needs! 👨‍💻😎 More info about me: I enjoy being challenged and engaging with projects that require me to work outside my comfort and knowledge set, as continuing to learn new languages, technologies and development techniques. In my free time I love doing exercise and reading books. I believe that besides possessing technical knowledge, one must give their best, always be available, proactive, support the team, maintain good discipline and never give up in the face of new challenges. In my case, I fulfill all these aspects.

AI Agent Engineer | Full-Stack Developer | OpenAI, LangGraph, RAG, MCP, FastAPI, Next.js I help startups and businesses build AI-powered products that automate workflows, improve customer experiences, and reduce manual work. My expertise spans AI Agents, Retrieval-Augmented Generation (RAG), LLM integrations, and full-stack web development. Whether you need an intelligent chatbot, a multi-agent system, an AI workflow, or a complete SaaS application, I can deliver scalable, production-ready solutions. What I Build 🤖 AI Agents & Automation * AI Agents using LangGraph, OpenAI Agents SDK, CrewAI, and AutoGen * Multi-agent workflows * AI customer support assistants * Sales and lead-generation agents * Internal business automation * AI copilots * Voice AI assistants * Email and document automation 🧠 LLM Development * OpenAI (GPT-4.1, GPT-5) * Anthropic Claude * Google Gemini * Open-source models (Llama, Qwen, Mistral, Gemma) * Ollama deployment * Prompt engineering * Structured outputs * Function calling * Model evaluation 📚 RAG & Knowledge Systems * LangChain * LlamaIndex * Pinecone * Qdrant * ChromaDB * FAISS * Hybrid search * Semantic search * PDF and document chat * Enterprise knowledge bases 💻 Backend Development * Python * FastAPI * Django * Flask * Node.js * Express.js * NestJS * REST APIs * GraphQL * WebSockets * Background workers 🌐 Frontend Development * React.js * Next.js * TypeScript * JavaScript * Tailwind CSS * Redux * React Native ☁️ Cloud & DevOps * AWS * Docker * Kubernetes * Redis * PostgreSQL * MongoDB * Firebase * CI/CD * Nginx * GitHub Actions Services I Offer ✔ AI Chatbots ✔ AI Agent Development ✔ RAG Applications ✔ Custom GPT Integrations ✔ SaaS Development ✔ API Development ✔ Dashboard Development ✔ CRM & ERP Integrations ✔ Workflow Automation ✔ OpenAI API Integration ✔ MCP Server Development ✔ AI Voice Assistants ✔ Full-Stack Web Applications Why Clients Work With Me * Clean, scalable, and maintainable code * Strong communication and regular progress updates * Production-focused architecture * Security and performance best practices * Long-term support after deployment I enjoy working with founders, startups, and growing businesses to turn ideas into reliable AI products. Whether you're building an MVP, adding AI to an existing platform, or creating a complex automation system, I'm ready to help. If you're looking for an AI engineer who understands both modern LLM technologies and full-stack development, let's discuss your project.

🏆 AWS Certified Generative AI Developer - Professional 🏆 AWS Certified Machine Learning – Specialty 🏆 AWS Certified Data Analytics – Specialty 🏆 Google Cloud Professional Machine Learning Engineer 🏆 Google Cloud Professional Cloud Architect I help businesses design, build, and deploy production-ready Generative AI applications powered by LLMs, AI Agents, RAG pipelines, Voice AI, and workflow automation. With 8+ years of experience in Machine Learning, NLP, Computer Vision, and Cloud AI, I specialize in transforming AI prototypes into scalable, enterprise-grade solutions running on AWS, GCP, and Kubernetes. What I Build ✅ AI Agents & Agentic Workflows * Single-Agent & Multi-Agent Systems * LangGraph Agent Development * MCP (Model Context Protocol) Integrations * Tool Calling & Function Calling Agents * Autonomous Research & Task Execution Agents * AI Workflow Automation ✅ RAG & Enterprise Search * Retrieval-Augmented Generation (RAG) * Enterprise Knowledge Assistants * Internal Documentation Chatbots * PDF, SharePoint, Confluence & Website Search * Hybrid Search (Vector + Keyword) * Agentic RAG Architectures ✅ Conversational AI & Voice AI * AI Chatbots * Customer Support Assistants * AI Voice Agents * Call Center Automation * Real-Time Speech-to-Speech Applications * Voice Ordering & Appointment Booking Systems GenAI Technologies 📍 LLMs OpenAI GPT-4o, GPT-5, Claude, Gemini, Llama, Mistral, Gemma, AWS Bedrock 📍 Agent Frameworks LangGraph, LangChain, LlamaIndex, CrewAI, AutoGen, LangSmith, LangFuse 📍 Vector Databases Pinecone, Qdrant, Weaviate, Milvus, ChromaDB, pgvector, Elasticsearch, Redis 📍 Voice AI Vapi, ElevenLabs, Deepgram, AssemblyAI, Whisper 📍 Prompt Engineering & Optimization DSPy, TextGrad, Structured Outputs, Guardrails 📍 LLM Deployment vLLM, Hugging Face TGI, TensorRT-LLM, Ray Serve, TorchServe Machine Learning & MLOps 📍 TensorFlow 📍 PyTorch 📍 Hugging Face 📍 Scikit-Learn 📍 Spark ML 📍 Forecasting & Predictive Analytics 📍 Computer Vision Solutions Cloud & Infrastructure AWS: Bedrock, SageMaker, Lambda, ECS, EKS, Textract, Comprehend, Rekognition, Transcribe, Polly, Forecast, Personalize Google Cloud: Vertex AI, Agent Builder, Gemini, Document AI, Dialogflow CX, GKE, Cloud Run, Cloud Functions Azure: Azure OpenAI, Azure ML Infrastructure: Kubernetes, Docker, CI/CD, GitHub Actions, Terraform Industries Served ✔ Retail & eCommerce ✔ Manufacturing ✔ Supply Chain & Logistics ✔ Automotive ✔ Healthcare ✔ Financial Services ✔ Customer Support Operations Whether you need an AI Agent, RAG chatbot, Voice AI solution, LLM-powered application, or a complete GenAI platform deployed on AWS/GCP, I can help take your idea from concept to production.

Most AI deployments fail after the demo: fragile API wrappers, runaway token bills, and agents that hallucinate the moment real traffic hits them. I'm a Forward Deployed Engineer: I build the infrastructure that survives contact with real users, including secure Model Context Protocol (MCP) servers, minimal-dependency agentic pipelines, and computer vision systems engineered for production, not a Colab notebook. I don't ship wrapper demos or generic chatbots. I connect autonomous AI models to the systems that actually run a business, including databases, legacy infrastructure, and live video feeds, without the hallucinations, security gaps, or token-cost spikes that kill most AI projects right after the pilot. Recent production impact: ★ Trained a dual-model YOLOv8 + EfficientNet-B0 pipeline (0.954 mAP50, 96.3% validation accuracy) for a US sports organization, cutting game-footage review time 70–90% across 1,000+ hours of video ★ Built a GPU-accelerated OCR pipeline for a Texas research firm that turned 20M+ scanned legal records into clean, structured, queryable data ★ Shipped a text-to-SQL analytics chatbot over a 274,000+ row PostgreSQL warehouse on AWS Bedrock, replacing manual analyst lookups with instant, auditable answers ★ Designed Graph-RAG systems using AST and runtime analysis to compute minimal context subgraphs, delivering high-precision retrieval at a fraction of typical token cost ★ Built SnapTeX, an end-to-end pipeline that parses handwritten math and technical diagrams into clean, compilable LaTeX Where I specialize: ★ Agentic orchestration: multi-agent topologies, state machines, and reflection loops that stop autonomous agents from looping, drifting, or executing destructive actions ★ MCP servers: secure, production-grade servers that bridge LLMs to enterprise databases and legacy infrastructure, exposing only what each agent actually needs ★ Computer vision: fine-tuned YOLO-family models (YOLOv8/YOLO11) for real-time detection and tracking, deployed cloud to edge ★ Document intelligence: OCR, batch extraction, and validation pipelines that turn chaotic legacy data into structured, trustworthy records at scale ★ Production infrastructure: Docker, FastAPI, async pipelines, vector databases, secure deployment on AWS Bedrock and Azure Working with me: clean, modular, documented Python with zero dependency bloat. Security-first architecture, with runtime guardrails and role-based access control around anything touching private data. Direct, technical communication about trade-offs, scalability, and cost. I'll tell you when something won't scale before you pay to find out. If you're a founder or technical team dealing with a fragile agent, a data bottleneck, or a workflow that needs to run reliably at real-user scale, not just in a demo, message me and let's talk about it. Tech stack: Python, TypeScript, FastAPI, Next.js, React, Docker, PyTorch, YOLOv8/YOLO11, OpenCV, Computer Vision, Object Detection & Tracking, Machine Learning, Deep Learning, LangChain, Model Context Protocol (MCP), Retrieval-Augmented Generation, AI Agent Development, Large Language Models, Generative AI, Chatbot Development, OpenAI API, AWS Bedrock, MLOps, API Development, PostgreSQL, MongoDB, SQL, Vector Databases, Data Engineering, Data Extraction, OCR, Time Series Forecasting, XGBoost, Streamlit, Apache Spark, Apache Hadoop, Bot Development, GPU Computing, Amazon Web Services, Microsoft Azure

Helping businesses automate conversations, streamline operations, and build production-ready web and mobile applications powered by AI. I am a Full-Stack AI, Web & Mobile Developer with 6+ years of experience building modern web applications, React Native mobile apps, and AI-powered solutions. I specialize in AI Voice Agents, Retrieval-Augmented Generation (RAG), MCP integrations, workflow automation, and scalable full-stack development for web, iOS, and Android platforms. Over the years, I have successfully delivered web and mobile applications with features such as payment gateways, push notifications, OTP authentication, QR code systems, AWS integrations, appointment booking systems, eCommerce platforms, loyalty programs, admin dashboards, and App Store/Play Store deployments. More recently, I have focused on building AI systems that can: • Handle inbound and outbound phone calls using Vapi • Integrate with CRMs, Google Calendar, Jira, and external business tools • Retrieve company knowledge using RAG pipelines • Perform actions through MCP servers and AI agents • Automate customer support and business workflows • Build scalable backend systems using Node.js and Firebase • Develop responsive web applications with modern frontend frameworks ### What I Can Help You With ✅ AI Voice Agents (Vapi, OpenAI) ✅ AI Automation & Workflow Systems ✅ RAG Applications & Knowledge Bases ✅ MCP Client & Server Integrations ✅ Full-Stack Web Development (React, Next.js, Node.js) ✅ React Native Mobile Applications ✅ iOS & Android Deployment ✅ Firebase & Node.js Backend Development ✅ REST & GraphQL API Development ✅ Push Notifications ✅ Payment Gateway Integration ✅ Third-Party API Integrations ✅ CRM & Calendar Integrations ✅ eCommerce Web & Mobile Applications ✅ Admin Dashboards & Business Portals ### Why Clients Work With Me ✔ Production-ready solutions ✔ Clean, scalable architecture ✔ Strong communication ✔ Fast turnaround ✔ Business-focused development ✔ Long-term support Whether you need an AI-powered automation platform, a responsive web application, or a cross-platform mobile app, I can help turn your ideas into reliable, scalable products that deliver real business value. If you're looking for a developer who understands AI systems, web platforms, and mobile products, let's discuss your project.

Senior AI Engineer | Production AI Developer 🚀 5+ years delivering production-ready AI solutions for research teams, startups, enterprises, and business leaders. I bridge cutting-edge LLM, 𝐓𝐫𝐚𝐧𝐬𝐟𝐨𝐫𝐦𝐞𝐫, Vision Transformer, Generative AI, Computer Vision, NLP, and MLOps research with real-world business impact — including Python-based AI productivity projects in 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧 𝐰𝐢𝐭𝐡 𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭 and enterprise clients on Upwork. Specializing in AI Automation for research, startups, enterprises & business process automation. What I Deliver: ✅ Production-Grade AI Computer Vision & NLP Systems Industry-leading CV and NLP solutions that accelerate operations, slash costs by 30%, and boost profits. ✅ Measurable Impact AI-driven automation that reduces errors by 99% and accelerates workflows — delivering CV & NLP products that increase efficiency for research, startups, and enterprises. ✅ Reliability Benchmarking, ablation studies, bias evaluation, and clean architecture for trustworthy, production AI systems. Core Expertise 👁️ 𝐂𝐨𝐦𝐩𝐮𝐭𝐞𝐫 𝐕𝐢𝐬𝐢𝐨𝐧 High-performance systems using YOLO, Vision Transformers (ViT), OpenCV, CNN for object detection and real-time inference. ⚙️ 𝐌𝐋𝐎𝐩𝐬 & 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 𝐄𝐧𝐝-𝐭𝐨-𝐞𝐧𝐝 solutions with Python, PyTorch, FastAPI, Docker, CI/CD, and monitoring. Expertise in Weights & Biases (wandb), MLflow, Snowflake, and AWS MLOps tools. 🔗 Full-Stack Integration Scalable cloud deployments on AWS, Azure, Laravel, Django, React, Flutter, and Hugging Face with REST APIs and real-time data pipelines. What I Build 🤖 Autonomous AI Agents & Orchestration LangGraph • CrewAI • LangChain — for research and enterprise automation 🗣️ LLM & Voice AI Integration Chatbots, assistants, and support automation for startups and businesses 📚 Retrieval Augmented Generation (RAG) Pinecone • Weaviate and other vector databases 📈 Machine Learning Pipelines Forecasting, fraud detection, and predictive analytics ⚡ Workflow Automation n8n • Make • Zapier + custom Python for business process automation 💻 Full Stack Web & App Development FastAPI • Django • Node.js • React Client Feedback ⭐ "Very skilled in transformer models and AI solutions. Professional, communicative, and reliable. Would definitely hire again." — 5.0 ★ ⭐ "Completed with minimal supervision and produced good quality outputs." — 5.0 ★ Credentials & ROI 🏆 Top Rated & 5.0 Rating 100% Job Success with a proven portfolio of LLM, CV, NLP, and RAG industry-level deployments for research, startups, and enterprises. 📜 Credentials MSCS (AI domain) + Microsoft-collaborated AI experience 💰 𝐑𝐎𝐈 𝐅𝐨𝐜𝐮𝐬 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐀𝐈 𝐛𝐮𝐢𝐥𝐭 𝐟𝐨𝐫 𝐬𝐜𝐚𝐥𝐞, 𝐚𝐜𝐜𝐮𝐫𝐚𝐜𝐲, 𝐚𝐧𝐝 𝐦𝐞𝐚𝐬𝐮𝐫𝐚𝐛𝐥𝐞 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐫𝐞𝐬𝐮𝐥𝐭𝐬 🔥 𝐋𝐞𝐭'𝐬 𝐛𝐮𝐢𝐥𝐝 𝐲𝐨𝐮𝐫 𝐧𝐞𝐱𝐭 𝐀𝐈 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐭𝐨𝐠𝐞𝐭𝐡𝐞𝐫. 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚𝐧 𝐢𝐧𝐯𝐢𝐭𝐚𝐭𝐢𝐨𝐧 — 𝐈'𝐥𝐥 𝐠𝐥𝐚𝐝𝐥𝐲 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐫𝐞𝐪𝐮𝐢𝐫𝐞𝐦𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐩𝐫𝐨𝐯𝐢𝐝𝐞 𝐚𝐧 𝐢𝐧𝐢𝐭𝐢𝐚𝐥 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 𝐚𝐭 𝐧𝐨 𝐜𝐨𝐬𝐭.