Senior Full-Stack & AI Engineer

I build production-ready web, cloud, and AI systems.

I am a Senior Full-Stack & AI Engineer based in Guadalajara, Mexico, with nearly 20 years of commercial software engineering experience across full-stack products, cloud-native platforms, distributed systems, and applied AI.

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20Years of commercial experience
AILLM systems, RAG, agents, voice AI
AWSServerless, microservices, cloud platforms
C1Advanced professional English

Selected work

Projects

Each project is presented separately so recruiters can quickly understand the business problem, technical scope, and impact. Replace the image placeholders with screenshots when available.

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AI-Native Parenting App · Parent Lab · 2024

Personalized parenting guidance powered by multi-agent AI

Rebuilt a traditional parenting app into an AI-native product with personalized courses, pathways, daily sessions, podcasts, and conversational AI experiences based on family context, user interactions, lessons, chats, and behavioral patterns.

Contributed to production-grade full-stack features, multi-agent personalization workflows, a Global Context Agent, AI-powered reflection flows, secure LLM access to internal product data, and evaluation frameworks for prompt and agent behavior.

ReactNext.jsNode.jsTypeScriptPythonAWSPostgreSQLLLMsMulti-Agent Systems
Case Study Screenshots
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Agentic Workflow Platform · NDA · 2024–Present

AI agents embedded inside controlled business workflows

Designed and built an agentic workflow automation platform for premium clinics, supporting the journey from inbound lead to patient evaluation, follow-up, appointment scheduling, payment coordination, and treatment start.

Built multi-channel AI workflows across WhatsApp, calls, email, chat, forms, CRMs, calendars, internal APIs, payment flows, spreadsheets, and support platforms with human-in-the-loop handoffs, observability, evaluation, and reusable industry-specific components.

PythonReactFlutterNode.jsAWSLangChainLangGraphPineconeRAGVoice AIOpenAI Realtime
Architecture Notes Workflow Overview
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AI Platform for Software Engineers · NDA · 2022–2024

Private code-focused LLM platform for engineering teams

Worked as a founding engineer on a developer-facing AI platform using fine-tuned code-focused LLMs deployed locally or within private company infrastructure.

Covered the full LLM lifecycle: dataset collection, cleaning, labeling, fine-tuning, evaluation, quantization, local inference, product integration, CI/CD, and versioning for application code, prompts, datasets, and evaluation scripts.

PythonReactNode.jsTypeScriptHugging FaceAWS SageMakerQLoRAGGUFllama.cppMLOps
Technical Summary Model Lifecycle
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Real-Time Transport Tracking Platform · GRS Solutions · 2016–2019

GPS-based logistics visibility platform with web and mobile apps

Led and built a real-time transport tracking platform for monitoring client transports with GPS location updates, status visibility, checkpoints, photos, incident reporting, analytics, and mobile workflows for custodians.

Integrated AWS services for storage, synchronization, streaming, analytics, authentication, authorization, backend management, and scalable deployment using serverless patterns, Docker, and AWS Fargate.

ReactReact NativeNode.jsAWSDynamoDBS3LambdaAPI GatewayAmplifyDocker
Platform Overview Screenshots

Technical focus

Skills

A concise snapshot of the technologies and capabilities I can discuss in depth during interviews.

Full-Stack Engineering

React, Next.js, React Native, Node.js, TypeScript, JavaScript, Python, Java, REST APIs, GraphQL, authentication, API design, and backend services.

Cloud & Architecture

AWS, Lambda, DynamoDB, S3, API Gateway, Amplify, Kinesis, Docker, Fargate, CI/CD, serverless architecture, microservices, distributed systems, and event-driven workflows.

AI Engineering

LLM integration, RAG, prompt engineering, tool/function calling, LangChain, LangGraph, Pinecone, AI agents, voice AI, OpenAI, Anthropic, Gemini, evaluation, telemetry, and MLOps.

CV

Professional background

Recruiter-friendly summary of my experience, technical background, education, and availability.

February 2024 – Present

Senior Full-Stack & AI Engineer / AI Workflow Architect · Agentic Workflow Platform

Agentic workflow automation platform with multi-channel agents, RAG, tool calling, human-in-the-loop processes, observability, evaluation frameworks, and reusable business workflow components.

February 2024 – December 2024

Senior Full-Stack & AI Engineer · Parent Lab

AI-native parenting app with personalized guidance, multi-agent AI, conversational experiences, production full-stack features, cloud services, and evaluation frameworks.

February 2022 – January 2024

Senior AI Engineer / Founding Engineer · AI Platform for Software Engineers

Private code-focused LLM platform covering dataset preparation, fine-tuning, evaluation, quantization, local inference, product integration, and MLOps practices.

December 2020 – December 2021

Technical Lead & Full-Stack Engineer · Infobip / Amdocs

Scalable web and backend systems using React, Node.js, Python, PostgreSQL, AWS, microservices, and serverless architecture patterns.

January 2016 – October 2019

Head of Engineering / Founding Engineer · GRS Solutions

Real-time transport tracking platform with web, mobile, GPS workflows, AWS services, serverless architecture, Docker, and CI/CD pipelines.

January 2012 – October 2016

Engineering Manager & Full-Stack Developer · Digital Data

High-traffic digital platform with full-stack web applications, dashboards, CMS, microservices, AWS, React, Java, .NET, C#, and SQL Server.

2002 – 2006

Bachelor's Degree in Software Engineering / Computer Systems Engineering

Universidad del Valle de México.

Contact

Let’s build something useful.

I am open to full-time senior engineering roles, AI engineering opportunities, and technical conversations around full-stack platforms, applied AI, and cloud-native architecture.

christianruiztel@gmail.com GitHub LinkedIn