JorgeCabello

Product Engineer — Buenos Aires

Six years at startups, from seed rounds to Series B.
I build products with taste.

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About

Software engineer with 8+ years building scalable web applications. Went from frontend to full stack to AI engineering.

Joined as the second engineer at a startup and helped grow it to 30 people through Series B. Always early, always building the core architecture. Currently at Cometa (Series A, $12M), working alongside the team on AI projects — vector search, RAG, and multi-agent systems.

I treat AI as infrastructure. I build with Claude Code and Codex as daily collaborators, creating custom tools, multi-agent systems, and automated workflows to ship faster. I still care deeply about craft and how things feel, which is why I rebuild things like this portfolio just to experiment.

StatusSenior SWE at Cometa

LocationBuenos Aires, AR

StackTypeScript, Python, React, Next.js, FastAPI, PostgreSQL, AWS

Experience

Senior Software Engineer

Cometa2022 — Present

Series A

Frontend & Architecture

Architected the frontend platform: Turborepo monorepo with shared design system, utils, and configs powering 3 React/Next.js applications — payments, invoicing, school management, reporting.
Designed a multi-tenant data layer with PostgreSQL RLS ensuring strict per-school data isolation.
Built the AI chat interface (Jarvis) with streaming responses, conversation history, and feedback. Used daily by every team at the company.
Built Next.js + Slack AI interfaces with streaming responses for internal teams to query data, browse support analytics, and chat with the codebase.

AI Engineering

Built a multi-agent AI platform (FastAPI + Agno + LangGraph) with 6 production agents: conversational SQL with auto-generated charts, WhatsApp/Twilio support bot with human escalation that cut weekly support from 15 hours to minutes, multi-repo code chat, and more.
Designed the RAG + vector search infrastructure using PostgreSQL pgvector and Qdrant for semantic context retrieval across all agents.
Built and self-hosted n8n AI workflow platform on AWS with Pulumi IaC — created 50+ automated workflows adopted by Sales, Support, Ops, and Product.
Ran AI workshops and hackathons that trained 50+ people. Introduced Claude Code and Cursor to the engineering team.

Senior Full-Stack Developer

Flevo2022

Educational Fintech

Sole frontend engineer. Built the checkout flow and school management dashboard from scratch, enabling instant loan approvals for 1k+ students.
Implemented custom credit scoring UI components (React, TypeScript) that cut loan processing from days to 24 hours.
Collaborated with 2 backend engineers to deliver automated document processing and real-time eligibility checks.

Full-Stack Developer

Karvi2019 — 2022

Seed → Series B

Joined as founding engineer (#2). Built the frontend from scratch for the used-car e-commerce platform serving 100k+ monthly users.
Led frontend initiatives for vehicle catalog and built internal dashboard for dealerships — real-time inventory management and sales tracking.
Helped scale engineering from 2 to 30 developers through Series B, establishing frontend best practices and mentoring new engineers.

Creative Frontend Developer

Freelance2017 — 2019

Agencies & Startups

Specialized in advanced frontend for startups and agencies — SVG animations, creative interactions, GSAP transitions.
Built 50+ high-performance marketing sites and web apps for international clients across the Fiverr platform.

Experiments

Zas

macOS menu bar app that runs speech-to-text locally on Apple Silicon. No cloud, no waiting. Press a key, talk, it types. 25 languages, filler word removal, runs entirely offline.

SwiftSwiftUIApple ML

Voiz

iOS journaling app where you talk instead of type. Local transcription, emotion tracking over time, AI-generated insights about your patterns.

SwiftUISwiftDataOn-device ML

ClaudioMac

Native macOS app for managing Claude Code sessions visually. Liquid Glass UI on macOS Tahoe, embedded terminal via SwiftTerm, session state detection. Also has a Telegram bot that lets me control sessions from my phone — stream output, send commands, manage worktrees.

SwiftSwiftUISwiftTerm

Hand

Personal AI fleet manager. Decomposes tasks, dispatches parallel Claude Code sessions, and runs a fleet of autonomous bots — each with its own persona, interface (Telegram, WhatsApp, CLI), and persistent memory.

TypeScriptAI AgentsBun

Voice Agents

Voice agent platform built on LiveKit + Twilio SIP. Inbound customer support with pluggable LLM backends, plus an outbound agent that calls with a mission, reports findings, and escalates decisions to a human mid-call.

LiveKitTwilioOpenAI Realtime

Stack & Tools

ReactNext.jsTypeScriptTailwindGSAPNode.jsPythonFastAPIPostgreSQLAWSDockerClaude CodeCodex CLIRAGpgvectorMCPAI AgentsReactNext.jsTypeScriptTailwindGSAPNode.jsPythonFastAPIPostgreSQLAWSDockerClaude CodeCodex CLIRAGpgvectorMCPAI AgentsReactNext.jsTypeScriptTailwindGSAPNode.jsPythonFastAPIPostgreSQLAWSDockerClaude CodeCodex CLIRAGpgvectorMCPAI AgentsReactNext.jsTypeScriptTailwindGSAPNode.jsPythonFastAPIPostgreSQLAWSDockerClaude CodeCodex CLIRAGpgvectorMCPAI Agents

Workflow Automations

Council

Multi-model code review. Sends my current context to Codex for an independent analysis, then compares both perspectives. Catches blind spots neither model finds alone.

Sentry Fix

End-to-end production error resolution. Finds the error in Sentry, traces it to the code, applies a fix, opens a PR, and monitors the deploy for regressions.

Recall

Semantic search over 7,100+ files of past conversations and notes. Gives every new session full context from every previous one.

Finance

Browser automation that logs into my bank, pulls transactions, categorizes spending, and updates my financial tracking. Full Playwright pipeline.

AFIP

Navigates Argentina's tax portal to generate export invoices. Form filling, validation, submission. All through browser control.

Light

Natural language control of Philips Hue lights. Mood presets, room awareness, bilingual commands. Hardware integration through Claude Code.

Contact

jorgecblldev@gmail.com

GitHub

CodePen