Open to opportunities

Arthur Cavini

@arthurcavini

I build real-time Web3 apps and modernize products with React, Svelte, and Node.js.

At Satlantis, I'm building a decentralized social app on Nostr using Svelte, SvelteKit, TypeScript, secure WebSockets, and a TypeScript SDK. I delivered real-time chat in two weeks and own AWS Amplify deployments, GitHub Actions CI, Cypress e2e testing, and AI PR review.

Previously at BTG Pactual, Cielo, and InstaCarro, I modernized legacy applications, built React and TypeScript products, created reusable design systems, and developed Node.js/Express APIs. I’ve led end-to-end delivery, introduced low-risk feature-flagged rollouts, and mentored developers through 1:1s and code reviews.

Experience

Work history, roles, and key accomplishments

Current

Senior Front End Developer

Current

Satlantis

Jan 2025 - Present (1 year 8 months)

Building a decentralized social app on the Nostr protocol with Svelte, SvelteKit, and TypeScript, including real-time chat and AWS deployments.

Svelte SvelteKit TypeScript Nostr WebSockets AWS Amplify GitHub Actions Cypress

Senior Full Stack Developer

BTG Pactual Bank

Jan 2021 - Dec 2025 (4 years 11 months)

Converted a legacy HTML and C# application to React with TypeScript for an internal insurance platform, built a UI component library, and mentored developers.

React TypeScript styled components Storybook Jest Express AWS

Senior Full Stack Developer

Cielo

Jan 2021 - Dec 2021 (11 months)

Modernized a legacy JavaScript/jQuery sales-tracking tool into a React and TypeScript web app, built a UI library, and maintained Node.js/Express APIs.

React TypeScript styled components Jest Cypress Node Express React Native

Full Stack Developer

InstaCarro

Jan 2021 - Dec 2021 (11 months)

Built a car-sales e-commerce platform from the ground up with Next.js, TypeScript, and Bootstrap, and helped implement API routes with Node.js/Express.

Next.js TypeScript Bootstrap Jest Cypress Node Express