Santiago Varacca
Resume

Santiago Varacca · AI Product Engineer

AI Product Engineer. Full-stack.

I develop AI-powered products, backed by nearly five years of professional full-stack experience. My work connects product requirements, interfaces, backend services, data and integrations, alongside hands-on AI experimentation.

Download resumeExplore AI projectsGitHub

AI products and tools

Applied AI in practice.

A selection of independent products and integrations that illustrate my work across applied AI and software engineering.

// 01

AI-powered personal finance app

Finance Copilot

Personal project · local MVP

A personal-finance application using LangGraph to coordinate AI-assisted document interpretation, with human review before changes and reports linked to source evidence.

  • React · TypeScript
  • FastAPI · LangGraph
  • SQLite
Discuss the projectSee experience
My role
Product requirements, direction of agent-assisted development, review, and workflow validation.
Available
Private local MVP with reviewable proposals and duplicate-safe processing.
// 02

Jira · Bitbucket · MCP

Worklogger

Open source · v0.9.3

A desktop app and MCP server for tracking Jira hours and handling Jira and Bitbucket tasks from an AI assistant, with review before changes.

  • Rust · Dioxus
  • Jira · Bitbucket
  • MCP · Windows · Linux
View repositoryRelease v0.9.3
My role
Defined the workflows and validated the desktop app, MCP integration, and review steps.
Available
Desktop: Windows. MCP: Windows and Linux.
// 03

Outlook · Windows · MCP

Outlook Local MCP

Open source · v0.2.1

Connects an AI assistant to classic Outlook on Windows to find and read email, with optional drafts and reviewed sends.

  • Python · Windows COM
  • Classic Outlook
  • MCP · reviewed actions
View repositoryRelease v0.2.1
My role
Defined the email workflows and checked the integration against real Outlook use.
Available
Python package for Windows and classic Outlook.

In this independent work, I define requirements, direct agent-assisted development, review results, and validate workflows.

Explorations

Other systems at different stages of development.

  • Agent Work

    Coordination tooling for coding agents: task packets, verification, handoffs, and recovery.

    In development

  • Rutero

    City-data and outing planning with source provenance.

    In progress

  • Aurora

    Assistant architecture exploring permissions, memory, and auditable actions.

    Paused

  • Changuito

    Supermarket price comparison for my own use.

    Personal tool

Professional experience

Nearly five years, across the stack.

I work across interfaces, APIs, databases, and the business flows that connect them.

Buenos Aires, Argentina · English C1 · Computer Engineering studies at UNLP

  1. 2026 — present

    Urbano Express

    Full-stack Software Engineer

    React and NestJS work on SUGU, an internal logistics platform.

    • Credit/debit-note flows and operational reporting
    • Batch billing, decimal precision, concurrency, and recovery
    • Postal Plus delivered through development and QA

  2. 2023 — 2026

    FK Tech Solutions Factory

    Full-stack Software Engineer

    Frontend and backend work across Wellio, Oh! Gift Card and Farmacias Central Oeste (FCO).

    • B2B people-management modules, digital gift-card commerce and internal ordering/control systems
    • Next.js, microfrontends, microservices, REST, gRPC and databases
    WellioOh! Gift Card

  3. 2023

    SwagCharm

    Frontend Developer · remote US team

    React and TypeScript product delivery with a remote US team.

    • API integration and collaborative review cycles

  4. 2021 — 2023

    42i

    Frontend Developer

    Product interfaces, API integrations, and web delivery.

    • React, Redux, CSS Modules, and Sass

Additional Next.js work includes Gray Malin with Shiftlab and the 42i landing page.

Gray Malin

Capabilities

From product requirements to working systems.

Professional full-stack experience and independent applied-AI work, across the product, the systems behind it and the checks needed to validate the result.

AI applications and agents

  • LLM workflows · typed tools · streaming
  • LangGraph · MCP · human review
  • Product requirements and workflow validation

Models and evaluation

  • Cross-encoder fine-tuning · synthetic datasets
  • Evaluation · hard negatives · error analysis
  • Local inference · ONNX · embeddings · retrieval experiments

Frontend and user workflows

  • TypeScript · JavaScript · React · Next.js
  • State management · forms · responsive interfaces
  • Microfrontends · Webpack Module Federation

Backend and data

  • Node.js · NestJS · REST · gRPC · Protocol Buffers
  • PostgreSQL · SQL Server · MongoDB · migrations
  • Asynchronous processing · precision · duplicate prevention

Integrations and automation

  • ERP-connected workflows · APIs · WebSockets
  • Internal tools · work-system integrations
  • Python/FastAPI in independent applications

Engineering and delivery

  • Shared libraries · monorepos · pnpm
  • Testing · debugging · code review · CI/CD
  • Requirements · agent-assisted development · validation

International remote opportunities

Let’s talk about your product.

Open to applied AI and full-stack product roles, plus selected projects involving integrations and developer tools.

Email meDownload resumeLinkedIn