Tomas Lopez — Full-Stack AI Chatbot & Web Application Architect

Expertise in AI and Machine Learning (14.0 yr.), Full Stack Web (14.0 yr.).

Last verified on July, 2026

Core Skills

Bio Summary

14+ years architecting and deploying scalable AI chatbots and multi-tenant web platforms, automating 80%+ client support inquiries and supporting 10M+ monthly users.
Expertise in Python, PHP, JavaScript/TypeScript, with advanced use of frameworks like Django, FastAPI, Laravel, React.js, and React Native for full-stack development.
Proficient in AI tools including Rasa, Dialogflow, LangChain, OpenAI APIs, and vector databases, delivering HIPAA-compliant healthcare and fintech solutions.

Technical Skills

Programming Languages	PHP, Python, TypeScript
JavaScript Frameworks	React
JavaScript Libraries and Tools	React Native

Work Experience

Senior AI Engineer & Full-Stack Architect - Vanguard Digital Solutions (80+ Client Projects across Healthcare, Fintech, E-commerce, and Logistics)

Duration: Jun 2014 – Present
Summary:

Led AI and full-stack development for a diverse portfolio of over 80 client projects spanning healthcare, fintech, e-commerce, and logistics sectors
Delivered AI-powered chatbots, multi-tenant web platforms, and mobile applications designed to automate client support and enhance user engagement at scale

Responsibilities:

Developed 45+ AI-powered chatbots and virtual assistants using Python (Django, FastAPI), Node.js, and NLP frameworks including Rasa, Dialogflow, LangChain, and OpenAI APIs.
Built 30+ full-stack web applications with React.js frontends and PHP/Laravel or Python/Django backends, integrating GraphQL and REST APIs.
Created 20+ mobile apps using React Native with backend integrations via SupaBase, Node.js, and Django.
Architected 35+ backend systems managing over 40 databases (MySQL, PostgreSQL, MongoDB, MariaDB) handling 10M+ daily API requests.
Implemented AWS cloud infrastructure including EC2, RDS, Lambda, S3, SageMaker, and Bedrock for over 50 products.

Technologies: Python (Django, FastAPI), Node.js, PHP (Laravel), React.js, React Native, Rasa, Dialogflow, LangChain, OpenAI APIs, GraphQL, REST APIs, SupaBase, MySQL, PostgreSQL, MongoDB, MariaDB, AWS (EC2, RDS, Lambda, S3, SageMaker, Bedrock)

Senior AI Engineer & Backend Lead - Intellispeak AI (Conversational AI Platform for Enterprise Clients)

Duration: 2012 – 2014
Summary:

Led AI engineering for a conversational AI platform serving over 500 enterprise clients
Designed and built the core chatbot engine to process millions of daily conversations, enhancing enterprise customer engagement through advanced dialogue systems

Responsibilities:

Managed a team of 8 engineers focused on developing and maintaining the conversational AI platform.
Designed and implemented the core chatbot engine using Python (Django) and Rasa.
Ensured platform scalability and reliability to handle 5M+ daily conversations.

Technologies: Python (Django), Rasa

Full-Stack Developer & AI Researcher - DataFlow Labs (Full-Stack Web Applications and Custom Chatbots Development)

Duration: 2010 – 2012
Summary:

Developed full-stack web applications and custom chatbots while conducting research on deep learning models for natural language processing
Contributed to advancing AI capabilities through peer-reviewed publications

Responsibilities:

Developed web applications using PHP/Laravel, Python/Django, and Node.js.
Built custom chatbots tailored to client needs.
Conducted AI research focused on deep learning models for NLP.

Technologies: PHP (Laravel), Python (Django), Node.js

Junior Full-Stack Developer - TechBridge Solutions (Client Web Applications Development)

Duration: 2008 – 2010
Summary: Developed client web applications with custom interactive features and plugins, enhancing user experience and functionality for various business clients.
Responsibilities:

Developed web applications using PHP, JavaScript, and MySQL.
Built custom interactive features and plugins to meet client requirements.

Technologies: PHP, JavaScript, MySQL

Education

Bachelor of Engineering (Computer Engineering)
Kettering University (Flint, MI), GPA: 3.6, First Class Honors, Co-op at GM & Delphi Automotive
2004 - 2008
Postgraduate Coursework (Non-degree, 30 Credit Hours)
University of Texas at San Antonio, Focus: Machine Learning, NLP, and Advanced Database Systems
2008 - 2010

Certification

AWS Certified Solutions Architect (Professional)
2023
AWS Certified Machine Learning (Specialty)
2022
Django Certified Developer
2022
MongoDB Certified Developer
2021
FastAPI Certified Developer
2023
Meta Certified Full-Stack Developer
2023

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