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Ariel Bailón Intriago

@arielbailnintriago

AI Engineer building production agents and cited RAG systems, including OrderOps Agent with human-approved refunds and 41 CI eval cases.

Ecuador

Message

What I'm looking for

I’m looking for an AI Engineer or AI-focused backend role where I can take features from problem to production and measure whether they work.

With OrderOps Agent, I built a production support agent that answers policy questions, looks up orders, and proposes refunds for human approval. Its refund rules are enforced in code, and 41 evaluation cases gate changes in CI.

I also built EDGAR Analyst, which answers questions about SEC filings and earnings calls with exact citations. Its refusal guardrail requires supporting evidence before answering, and its evaluation set helps me assess citation accuracy and relevance.

As an independent AI engineer, I’m developing CodeSage, a repository-question-answering assistant. Previously, I improved backend API response times at ULTAHOST by about 35% and reduced load times at MUSHROOMSOFT-IT by about 25%.

Experience

Work history, roles, and key accomplishments

Current

AI Engineer

Current

Independent

Jul 2026 - Present (3 months)

Own AI projects: OrderOps Agent and EDGAR Analyst and CodeSage. Built end-to-end LLM systems with tool-calling agents, cited RAG, and automated evals.

TypeScript NestJS LangGraph LangChain.js PostgreSQL Pgvector Prisma Zod Next.js Langfuse AWS Docker GitHub Actions Python fastAPI Pydantic ChromaDB Sentence Transformers Pytest

Backend Developer

ULTAHOST

Aug 2025 - Oct 2025 (2 months)

Designed and implemented scalable backend APIs with NestJS and TypeScript, improving response times by ~35% through query optimization and caching. Built and maintained REST and GraphQL services integrated with internal and third-party systems.

NestJS TypeScript MySQL GraphQL

Full Stack Developer

MUSHROOMSOFT-IT

Jun 2023 - Jan 2024 (7 months)

Developed backend services for a micro-frontend architecture (NestJS + Angular), cutting load times by ~25% through PostgreSQL indexing and query optimization. Designed data models in PostgreSQL and MongoDB for a system with 50k+ active records.

NestJS Angular PostgreSQL MongoDB Docker

Full Stack Developer

ZGAMESLATAM

Jun 2022 - Jun 2023 (1 year)

Designed and implemented REST APIs in Node.js for an internal ERP processing ~200 daily transactions, improving data consistency across modules. Optimized NGINX server configuration, achieving a ~20% reduction in average latency.

NodeJS Angular AWS DigitalOcean Nginx

Junior Full Stack Developer

CONSULTI

Sep 2020 - Jun 2022 (1 year 9 months)

Developed backend APIs in Node.js and Spring Boot for an e-commerce platform with 5,000+ products and multiple integrated payment methods. Deployed applications on AWS and DigitalOcean using Docker and NGINX, reducing deploy time by ~40%.

NodeJS Spring Boot Docker AWS Nginx