Matías L.

Demo profile

Full-stack Engineer - AI & LLM Integration

Buenos Aires, Argentina·8+ years·Spanish / English

Bio

I build products where AI actually adds value, not just hype. 8 years in web development, last 2 years focused on integrating LLMs into real applications. I understand prompt engineering, vector databases, and when NOT to use AI. Computer Science degree from UBA, but most of my AI knowledge is self-taught. I ship fast, test thoroughly, and write code that junior devs can maintain.

Skills

TypeScriptNext.jsPythonNode.jsPostgreSQLLLM toolingPromptingREST APIsTesting

Work style

Fast iterationPragmaticDetail-orientedCalm communicator

Portfolio (sample case studies)

Inventory Management Dashboard

Sample

Created real-time inventory system with stock alerts, purchase order automation, and multi-warehouse support.

Next.jsPostgreSQLREST APIs

SaaS Billing & Subscription System

Sample

Designed and implemented complete subscription management with Stripe. Handled proration, dunning, usage tracking, and admin billing tools.

Node.jsPostgreSQL

Real-time Collaboration Dashboard

Sample

Built multi-user dashboard with live updates using WebSockets and optimistic UI. Handled conflict resolution and implemented robust offline-first architecture.

Node.js

Mobile-first PWA for Food Delivery

Sample

Built progressive web app optimized for mobile with offline support, push notifications, and location tracking.

Next.js