Senior Software Engineer

Gustavo Saiani

16 years building high-scale software at companies like Metabase, Toptal, and Spoke. From greenfield MVPs to platforms serving millions. Led engineering teams and managed orgs along the way.

Gustavo Saiani

Where I've worked

May 2021 — Feb 2026

Metabase

Senior Software Engineer

Delivered core features of the open-source BI platform used by 90,000+ organizations including enterprise and government clients. Improved application performance as the company grew revenues ten-fold. Revitalized public-facing projects through SEO and LLM optimization, contributing to growth from 30k to 90k customers.

React 18TypeScriptReduxMantineCypressStorybook
www.metabase.com
Metabase screenshot
Mar 2020 — Apr 2021

Spoke

Team Lead: Web Front-end

Led development of a greenfield React application enabling real-time package tracking, now supporting over 1 billion parcel deliveries annually. Elevated code coverage from 0% to 70%, reducing bugs by 70%. Assembled and managed a team of React developers.

ReactNode.jsCypressJestGoogle Cloud Functions
www.spoke.com
Spoke screenshot
Jul 2018 — Mar 2020

Toptal

Engineering Manager & Senior Software Engineer

Helped drive over $200M in annual revenue building a Freelancer Profile app serving 7,000+ freelancers across 140+ countries. Built public-facing pages with SSR, achieving $4 per-visit revenues. Implemented A/B testing and personalization during 20% YoY company growth.

ReactApolloGraphQLCypressPostgreSQL
www.toptal.com
Toptal screenshot
Jun 2017 — Jul 2018

EmCasa

Co-founder & CTO

Designed and launched a real estate marketplace MVP using React and Elixir. Raised $1M in seed funding and facilitated the sale of dozens of properties in its first months of operation.

ReactElixirReact Native
www.emcasa.com
EmCasa screenshot

Things I'm building


Technical toolkit

Languages

JavaScriptTypeScriptNode.jsHTML5CSS3ElixirRuby

Libraries

React 18ReduxStyled ComponentsJestCypressWebpackStorybook

Tools & Infra

Claude CodeGeminiAWSDockerGraphQLGitHub