Querétaro, MexicoOpen to remote roles

Hi, I'm Gustavo
Beauregard

Senior AI & Full-Stack Engineer

AI / LLM Engineering18+ Years ShippingRails · Node · Python · React

I build AI products end to end — retrieval pipelines, fine-tuned models and agent systems — on high-availability architectures that have served 3M+ monthly active users.

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About Gustavo

An engineer who ships. Eighteen years of hands-on work across the stack, now focused on building LLM-powered products that hold up in production.

Senior AI & Full-Stack Engineer

I've spent 18 years writing the code behind products people actually use — from telecom platforms serving millions of subscribers to AI systems running in production today.

At TheGurúCompany I built the AI microservices architecture behind Utoppia, ChatO and WeWell — embeddings and vector search, retrieval, fine-tuned models, RPA workers and a custom flow builder for agent workflows.

I work across the whole stack: Ruby on Rails, Node.js and Python on the back end, React and Next.js on the front, native mobile when it's called for, deployed on AWS and GCP. I like problems where the hard part is the system design, not the framework.

Gustavo Beauregard - Professional Photo

18+ Years

Writing production code

15+ Products

Shipped to production

AI / LLM

RAG, fine-tuning, agents

3M+ Users

Served by systems I built

Key Achievements

2020

Shipped first production AI SaaS product on a custom LLM stack

2017

Built the platform behind Mexico's first MVNO — 25K+ subscribers

2013

MIT Megacity Logistics Lab contributor, ITESM graduate

Technical Expertise

The stack I actually build with — LLM and retrieval systems on top of backend services, front-end applications, native mobile and the cloud infrastructure underneath.

AI & LLM Engineering

Shipping retrieval, fine-tuning and agent systems to production

RAG Pipelines

Expert

Chunking, retrieval & context assembly

Deep expertise with extensive production experience

Vector Databases

Expert

Embedding storage & similarity search

Deep expertise with extensive production experience

Model Fine-tuning

Advanced

Task-specific adaptation of open models

Strong proficiency with solid practical knowledge

Prompt & Eval Engineering

Expert

Structured prompting with measurable outputs

Deep expertise with extensive production experience

Agent Orchestration

Advanced

Multi-step tool-using autonomous systems

Strong proficiency with solid practical knowledge

MCP Servers

Advanced

Model Context Protocol implementations

Strong proficiency with solid practical knowledge

RPA & Workflow Automation

Expert

n8n workflows and process automation

Deep expertise with extensive production experience

API Orchestration

Expert

Complex service integrations

Deep expertise with extensive production experience

Backend Development

Building robust, scalable server-side solutions

Ruby on Rails

Expert

Full-stack web development framework

Deep expertise with extensive production experience

Node.js

Expert

JavaScript runtime for scalable applications

Deep expertise with extensive production experience

Microservices

Advanced

Distributed system architecture

Strong proficiency with solid practical knowledge

AWS

Advanced

Cloud infrastructure & services

Strong proficiency with solid practical knowledge

High Availability

Expert

Resilient system design

Deep expertise with extensive production experience

Open Source

Advanced

Contributing to community projects

Strong proficiency with solid practical knowledge

Frontend Development

Creating engaging user experiences across platforms

React.js

Expert

Modern component-based development

Deep expertise with extensive production experience

Ember.js

Expert

Ambitious web applications

Deep expertise with extensive production experience

Next.js

Expert

Full-stack React framework

Deep expertise with extensive production experience

Admin Dashboards

Expert

Complex data visualization

Deep expertise with extensive production experience

Mobile Websites

Advanced

Responsive web design

Strong proficiency with solid practical knowledge

CRM Systems

Advanced

Customer relationship platforms

Strong proficiency with solid practical knowledge

Mobile Development

Native and cross-platform mobile solutions

iOS (Swift)

Expert

Native iOS app development

Deep expertise with extensive production experience

iOS (Objective-C)

Advanced

Legacy iOS applications

Strong proficiency with solid practical knowledge

Android (Kotlin)

Advanced

Modern Android development

Strong proficiency with solid practical knowledge

React Native

Advanced

Cross-platform mobile apps

Strong proficiency with solid practical knowledge

Architecture & Platform

Designing systems that stay up under load

Distributed Systems Design

Expert

Service boundaries, queues & data flow

Deep expertise with extensive production experience

Cloud Architecture

Expert

AWS & GCP resilient frameworks

Deep expertise with extensive production experience

High Availability

Expert

System reliability & uptime

Deep expertise with extensive production experience

CI/CD & DevOps

Advanced

Docker, pipelines & automated deploys

Strong proficiency with solid practical knowledge

Code Review & Mentoring

Expert

Raising the bar on shipped code

Deep expertise with extensive production experience

Agile/Scrum

Expert

Iterative development methodologies

Deep expertise with extensive production experience

Security & Compliance

Ensuring robust security and regulatory compliance

ISO 27001

Advanced

Information security management

Strong proficiency with solid practical knowledge

SOC 2 Compliance

Advanced

Security & availability controls

Strong proficiency with solid practical knowledge

Penetration Testing

Intermediate

Security vulnerability assessment

Good understanding with growing experience

Information Security

Advanced

Data protection & privacy

Strong proficiency with solid practical knowledge
18+ years of full-stack development experience
Selected work · 2012 to now

I build the whole product.

Not just the screen users see. The launch story, the conversion system, the admin console, the CRM, the API layer, and the automation that keeps the business moving after launch.

Utoppia intelligent automation platform homepage
01AI automation platform

Utoppia

Turn operational drag into intelligent momentum.

Built from the ground up as an enterprise AI platform: a conversion-led product experience backed by intelligent agents, custom automations, and integrations that make complex internal operations feel clear and actionable.

AI agentsRPA workflowsKnowledge systemsConversion engine
Stack
PythonNode.jsVector DBLLM APIsNext.jsDocker
Explore live product
ChatO intelligent customer communication homepage
02Conversational AI + CRM

ChatO

A sales and support team that never leaves the chat.

Created the full product story and operating surface for an AI agent that can qualify leads, manage support, schedule meetings, and hand conversations to people through WhatsApp, Instagram, Web Chat, Zendesk, Salesforce, and more.

Omnichannel UXLead CRMHuman handoffMessaging APIs
Stack
Node.jsPythonPostgreSQLWebhooksReactRAG
Explore live product
WeWell AI wellness coach homepage
03Personal wellness intelligence

WeWell

Habit-building, designed for the rhythm of real life.

Designed and engineered a calm, human-centered wellness experience around an always-on AI coach. The system connects nutrition, fitness, emotional health, progress tracking, and expert support in one personalized daily journey.

Mobile-first journeysPersonalizationHealth dashboardsHuman-in-the-loop
Stack
React NativeNode.jsPythonLLM APIsPostgreSQL
Explore live product
Eucledian digital technology studio homepage
04Digital products + growth systems

Eucledian

The studio where product, operations, and growth meet.

Built the technical foundation for tailored web and mobile products. From high-converting campaigns to admin tools, REST API backends, and dashboards, each build connected a sharp front end to a system teams could actually run.

Web + mobileAdmin CMSREST APIsCampaign systems
Stack
Ruby on RailsPHPMySQLiOS / AndroidAWSCI/CD
Explore live product

Professional Experience

18 years of hands-on engineering — from high-traffic web platforms to production LLM systems

Lead AI / Full-Stack Engineer

TheGurúCompany
(AI SaaS Platform)
2020 – Present
Mexico

Building the LLM stack and services behind three production AI products

Key Achievements:

  • Built and shipped three production AI SaaS products — Utoppia, ChatO and WeWell — from architecture through deployment
  • Designed an AI microservices architecture spanning messaging-channel integrations, data and reference APIs, embedding and vector search, RPA workers and a custom visual flow builder for agent workflows
  • Implemented the LLM layer end to end: model fine-tuning, embedding pipelines, vector database integration, retrieval and prompt engineering
  • Integrated commercial and open-source models behind a single provider-agnostic service interface

Technologies & Skills:

LLMsRAGVector DatabasesEmbeddingsFine-tuningPythonNode.jsMicroservicesRPADocker

Lead Platform Engineer

Koonol México / Gurúcomm
(Telecom SaaS / MVNO)
2017 – 2020
México

Engineered a multi-tenant telecom platform from first subscriber to 3M+ MAU

Key Achievements:

  • Engineered the platform behind Mexico's first MVNO on Altán's "Shared Network" — mobile apps, CRM, provisioning and conversion landing pages — reaching 25K active subscribers
  • Built the multi-tenant white-label version of the platform, licensed to multiple Altán Networks operators and serving 3M+ monthly active users
  • Developed the country's first number-portability API, plus top-up network integrations for convenience-store payments
  • Implemented prepaid and postpaid provisioning services with real-time balance and billing reconciliation

Technologies & Skills:

Ruby on RailsReactPostgreSQLREST APIsMulti-tenancyPayment SystemsTelecom APIsAWS

Senior Full-Stack Developer

Soluciones Eucledian
(Digital Products Studio)
2012 – 2017
Mexico

Shipped web and mobile products on high-availability architectures

Key Achievements:

  • Built web and mobile products on high-availability architectures reaching 1M+ daily users
  • Delivered custom CRM, ERP, e-commerce and campaign/operations systems for 50+ clients
  • Owned the full stack: REST API design, data modeling, front-end, native and hybrid mobile
  • Set up AWS deployment and CI/CD pipelines across the studio’s project portfolio

Technologies & Skills:

PHPRuby on RailsJavaScriptMySQLREST APIsiOS / AndroidAWSCI/CD

Previous Experience

Lead Developer

BNN

2009-2011Digital Agency

Full Stack Developer

Yoyo Button

2008-2009Web Product (Australia)

Let's Connect

Open to senior AI and full-stack engineering roles, remote. Happy to talk about your stack, your product, or an interesting problem.

Get In Touch

Email

hello@gusb.dev

Drop me a line anytime

Location

Querétaro, MX (UTC−6)

Remote, overlapping US hours

Response Time

Within 24 hours

Quick and professional replies

GitHub

github.com/gus-bn

Code and side projects

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I typically respond within 24 hours. For urgent matters, feel free to reach out via email directly.

Gustavo Beauregard Senior AI & Full-Stack Engineer

AI engineer with 18+ years shipping production systems. I build LLM-powered products — RAG, vector search, fine-tuning, agents — on architectures that scale to millions of users. Ruby on Rails, Node.js, Python, React/Next.js, AWS.

Querétaro, MXOpen to remote roles — AI & full-stack

© 2026 Gustavo Beauregard. All rights reserved.

Coded with love ❤️