Ricardo A.

Senior AI & Full-Stack | LLMs, RAG, ML, Automations, Web, Mobile, CMS

🏆 10+ Years Experience | AI-Powered Solutions | SaaS, FinTech, HealthTech, E-Commerce | Automation & CMS Expert I’m Ricardo, a Senior Full-Stack & AI Engineer who helps startups, enterprises, and fast-scaling teams turn complex ideas into secure, scalable, and revenue-generating products. From AI assistants and retrieval-augmented generation (RAG) pipelines to full-stack SaaS platforms, HIPAA-compliant health apps, FinTech automations, and eCommerce/WordPress solutions, I deliver systems that are production-ready, business-driven, and future-proof. ➡️ Generative AI & Conversational Agents Expertise I build intelligent, human-like AI assistants using LLMs (OpenAI, Claude, Anthropic, open-source models) and frameworks like LangChain, LlamaIndex, Haystack, and Rasa. These agents handle autonomous reasoning, task execution, and business communication - fine-tuned for your domain. ➡️ RAG (Retrieval-Augmented Generation) Systems I design hybrid systems that combine semantic search with AI generation to query knowledge bases and documents with contextually accurate outputs. ➡️ LLM Fine-Tuning & Evaluation I fine-tune foundation models with PyTorch, TensorFlow, Hugging Face, and evaluate them using perplexity, BLEU, ROUGE, and custom QA benchmarks to ensure performance and reliability. ➡️ Automation & Orchestration I develop robust automation solutions using Python, n8n, Airflow, and Make.com - streamlining workflows, improving efficiency, and reducing manual work through proven frameworks and APIs. ➡️ AI-Powered Analytics I build multi-agent systems to analyze structured and unstructured data, auto-generate dashboards, reports, and recommend actions - saving time and scaling insights. ➡️ Cloud-Ready Deployment I deploy AI pipelines, microservices, and LLM agents on AWS, GCP, and Azure using services like Bedrock, SageMaker, Vertex AI, Databricks, Docker, and Kubernetes for scalability and resilience. ➡️ Web & Mobile Application Development I architect modern web/mobile solutions using React, Next.js, Angular, Vue.js, and mobile stacks like React Native, Swift, Kotlin, and Flutter - integrated with secure APIs and scalable cloud backends. ➡️ Backend Engineering I build scalable, secure backend systems using Node.js, Express, Python (FastAPI, Django, Flask), PHP (Laravel, Symfony), and .NET (C#, ASP.NET Core), with strong API-first and microservice design. ➡️ E-Commerce & CMS Development I specialize in Shopify, WordPress, WooCommerce, Ghost CMS, and custom CMS builds - optimized for SEO, performance, and conversion, with integrations for payments, shipping, and CRM. 🏆 Key Achievements - Built a multi-tenant AI chatbot service handling 100K+ daily requests with sub-100ms latency. - Architected FinTech fraud-detection pipelines preventing $2M+ in suspicious transactions. - Delivered HIPAA-compliant AI-driven patient platforms for healthcare providers. - Scaled Shopify & WooCommerce stores with AI search, recommendation, and CRM integration. - Developed CMS-powered websites with high SEO performance. - Delivered automation systems saving clients 300+ hours/month in operations. 🛠 Tech Stack ● AI/ML: GPT-4, Claude, Mistral, LLaMA, LangChain, LlamaIndex, Haystack, Pinecone, Chroma, Weaviate, Redis Vector, PyTorch, TensorFlow, Keras, Hugging Face Transformers, scikit-learn, NLTK, spaCy, OpenCV, NumPy, Pandas, Matplotlib, Seaborn ● Web & Mobile: React, Next.js, Vue.js, Angular, Svelte, TailwindCSS, TypeScript, React Native, Flutter, Swift (iOS), Kotlin (Android), Java, Xamarin, Ionic ● Backend: Python (FastAPI, Django, Flask), Node.js (NestJS, Express), PHP (Laravel, Symfony), C# (.NET Core, ASP.NET), Java (Spring Boot, Hibernate), Go (Golang), Ruby on Rails, GraphQL APIs, REST APIs, gRPC ● CMS & E-Commerce: WordPress, WooCommerce, Shopify, Ghost, Strapi, Contentful, Sanity, Prismic, Drupal, Magento, Wix, Squarespace ● Automation: n8n, Zapier, Make (Integromat), Airtable, GoHighLevel, Monday.com, Pabbly, IFTTT, Power Automate ● Databases: PostgreSQL, MySQL, MongoDB, SQLite, Firebase, Supabase, Cassandra, DynamoDB, Redis, Neo4j ● Cloud & DevOps: AWS (EC2, S3, Bedrock, Lambda, SageMaker, ECS, EKS, RDS, CloudFront), GCP (Vertex AI, Firebase, BigQuery, Cloud Run), Azure (AKS, Cognitive Services, Functions), Docker, Kubernetes, Terraform, Ansible, Jenkins, GitHub Actions, GitLab CI/CD, Nginx, Apache, Vercel, Netlify ● Integrations & APIs: Stripe, PayPal, Braintree, Twilio, SendGrid, Postmark, Mailchimp, HubSpot, Salesforce, Slack, Discord, OAuth2, JWT, WebSockets, REST, GraphQL, gRPC 🤝 Let’s build something amazing together—whether it’s an AI-powered platform, a high-performing eCommerce solution, or a custom automation system that takes your business to the next level.