Braejan Arias 👋

I'm a Senior AI Engineer with 13+ years of shipping software that matters — from backend systems in Colombian banks to AI-powered products today. My career started in 2013 writing COBOL and C for core banking. I grew into a Technical Lead role driving legacy-to-REST migrations on credit and debit-card platforms, then made a deliberate shift into modern engineering through Mercado Libre, Sonatype, and Yuno. At Yuno I was an early contributor to the company's first AI team, building an automated calling MVP with lifelike voices using OpenAI, ElevenLabs, and Twilio over real-time WebSocket telephony — prompt engineering as the core design discipline. Today I lead AI engineering at Leal, where we're building AI that helps LATAM businesses connect with, understand, and grow their customer base. In parallel I run liwaisi.tech — bringing AI to rural Latin America, the part of the conversation that usually gets left out of the AI hype cycle. What I do well: agentic systems, LLM-powered voice and chat agents, prompt engineering, Python, and the pragmatic engineering judgment that only comes after a decade of production systems. What I'm looking for: technical leadership and innovation where the work actually reaches people. If that resonates, let's talk.