Head of Engineering

Building AI-first engineering teams

AI-first engineering & architectural transformations · Claude Code, AWS & GCP · Ex-Mercado Libre · Ex-IADB.

Contact me on LinkedIn 6+ years scaling teams
Gabriel Vargas, Head of Engineering
Currently

Two products. One playbook.

Monchis

Architectural redesign of a React Native + microservices mobile platform on AWS. Stability and performance lift that restored user retention and engineering momentum — the methodology that earned the muv reassignment.

muv

Full architectural transformation of a high-concurrency platform (React Native + Java microservices, AWS + GCP). Micro-apps decoupled deploys, AI-assisted dev across a 12-person team, observability + incident response brought to production grade.

Two products inside itti's ecosystem. Same playbook, different scale: stabilize, redesign, ship, then turn the same approach into team-level AI adoption.

  1. 01 Aligned engineering, product and design across a matrix org — negotiated priorities with business stakeholders, engaged senior leadership on technical strategy and quarterly planning.
  2. 02 Designed and shipped micro-apps architecture that decoupled mobile deploys, unblocking independent team velocity.
  3. 03 Introduced AI-assisted development (Claude Code, Cursor, Superpowers) across a 12-person team — faster cycles, less repetitive overhead.
  4. 04 Championed code review culture, observability tooling and incident response that brought reliability to production-grade levels.
  5. 05 Cloud infrastructure on AWS + GCP — compliance, scalability and uptime as engineering org-wide standards.
Mercado Libre · 2022 – 2024

Financial infrastructure trusted by 100+ internal teams

Project Leader at MercadoPago. Led teams of 8 and 12 engineers across design, delivery, and execution — collaborating directly with technical leads on architecture decisions while owning team performance and roadmap.

  • Financial Core

    Transfers & Debts engine

    Co-architected high-stakes Golang processing tools running daily multi-million-dollar batches at MercadoPago's operational core.

  • Internal Platform

    One Source

    MercadoPago's main visibility console — single pane pulling from every API across the ecosystem. Daily contact with most engineering teams in the company.

  • Developer Experience

    Frontend Framework

    Drove adoption and evolution of a widely-used internal frontend framework — thousands of projects depended on it, other frameworks built on top of it.

Inter-American Development Bank

Delivered engineering for multiple projects at one of the world's most influential multilateral development banks — managing cross-functional teams across engineering, design, product, and policy.

60+
People managed across engineering, design, product, policy.
30%
Time-to-market reduction via microfrontend architecture (Angular + Vue).
C-Level
Direct technical-strategy reporting. Roadmap influence in a large matrix org.

Engaged initially as a full-time consultant, then continued as a flexible contractor leading internal projects — a structure that allowed concurrent engagement with Mercado Libre from May 2022 onward.

AI-First Engineering

Where AI changes how teams ship

Practical, deliverable, repeatable. From org-wide Claude Code rollouts to side projects pushing agentic workflows past the obvious — and the management practice required to make it real.

Lectures & Talks

Speaking on AI-first engineering — beyond the demo

Talks aimed at engineering and management teams. Not just "how to become AI-first" — the harder management-scope problems nobody is talking about: incident playbooks, code review semantics, secret management, harness composition.

  1. Harness & Agentic Workflows

    How to compose tools, memory, and the agent loop that actually ships product. Patterns from real rollouts at itti.

  2. Management in an AI-first world

    Code review when AI is in the room. Incident recovery when the bug was AI-authored. Secret management, harness integration, agentic workflow design — the management problems the demos never cover.

Claude Code Rollout · itti

Driving AI-first transformation across thousands of engineers

Member of itti's core AI team (<40 people) gesting the AI-first transition for an engineering org of thousands. My contribution went beyond the obvious.

  1. Code review semantics when AI authored the diff. Trust signals, blast radius, rollback playbooks.
  2. Incident recovery when the bug is AI-authored — debugging conventions, escalation paths, post-mortem framing.
  3. Secret management + harness integration so agents can act without leaking credentials or context.
  4. Spec-Driven Development (SDD) + deep agents — composable workflows the rest of the org can adopt without rewriting.
Side Project · D&D AI Companion

An agentic RPG platform pushing the architecture further

Multi-tenant agentic platform for tabletop RPG. Helps DMs and players create characters, build full campaigns, translate adventures across rulesets — without reading thousands of pages of source material.

  • Architecture

    Graph-per-tenant, graph-per-campaign

    Each campaign is its own graph. Lore, characters, and rule references stay isolated and queryable.

  • Interoperability

    Translation layer between rulesets

    Bridges D&D 5e, Pathfinder, Vampire: the Masquerade and more — non-compatible schemas reconciled in one runtime.

  • Orchestration

    Multi-provider LLM routing

    Claude + GPT in the same pipeline. Pick the right model per task — reasoning, narration, world-building, character builder.

  • Harness

    Custom tools + harness in-code and as product

    Custom tools, in-code harness for trusted ops, and a product-level harness for end-user agents to compose without leaking context.

  • Agent-as-a-Service

    Beyond SaaS — agents you can subscribe to

    Not just a SaaS app: every campaign gets its own scheduled, persistent agent. Identity, memory, and orchestration are first-class.

  • Scheduled workflows

    Agentic loops on a clock

    Long-running, scheduled workflows that prep next session, reconcile state, and surface plot threads the DM forgot.

  1. Introduction to Model Context Protocol Completed
  2. Introduction to Agent Skills Completed
  3. Building with the Claude API In progress
  4. Claude 101 Completed
  5. Claude Code 101 Completed
  6. Claude Code in Action Completed
  7. Model Context Protocol: Advanced Topics In progress
  8. Introduction to Subagents Completed
Beyond Engineering

My Hobbies

Where curiosity goes after work hours.

Table · Session 47roll · for · initiative
Hobbies · D&D

Dungeons & Dragons

Dungeon Master with friends. Organization, improvisation, and empowering people's creativity — the same instincts that translate back to engineering leadership. Also the seed of the D&D AI Companion side project.

  • Role Dungeon Master · story-first
  • Skills Organization, improvisation, empowering creativity
  • Crossover Leadership rhythm — and the seed of a side project
Hobbies · Spirituality

Spirituality

Studious by nature, focused on non-duality. Applying it day-to-day to deconstruct, soften ego, and become a calmer, more complete person — better partner, better leader, better human.

“Less ego, more presence. Better partner, better leader, better human.”

Want to know more?

Best path is LinkedIn. I read everything, reply to anything technical, and answer recruiters who do their homework.