Paulo Ferri Souza

I build web applications. From front to back.

Four years in fintech, focused on front-end. Now working across the full stack.

Selected work

Selected work

All projects
Product walkthrough · 51 sec · Portuguese interface, no audio. Recorded with fictitious data.
Independent work / Full-stack developmentJan 2026 – present

An entire practice, in one application.

A web system that took a law firm from paper files to a fully digital workflow: 3,500 clients, 6,000 cases, a Kanban board for case status, PDF petition generation and spreadsheet reports.

The firm works fully digital; six people use the system daily.

Next.js / TypeScript / TanStack Query / Tailwind CSS

Read the case study
XP Inc. Home BrokerArchitecture overview

A shared language across brands.

Forward-contract screens and the main menu, migrated to the new SomaDS components as part of the white-label rebuild.

React + TypeScript + SomaDS
XP Inc. / Front-end engineering2025 – 2026

One trading platform. Every XP Inc. brand.

Front-end work on the Home Broker at XP Inc. during its move to a single white-label platform, including forward-contract trading screens, the navigation menu and the migration to a new version of the SomaDS design system.

XP Inc. now runs the white-label Home Broker for all of its brands.

React / TypeScript / Redux Toolkit / WebSockets

Read the case study
Product walkthrough · 1 min 15 sec · English captions over the Portuguese interface, no audio. Recorded in demo mode with sample data.
Personal project / Full-stack development

Food Saver: from groceries to the next meal.

A mobile-first application that connects pantry tracking, recipe suggestions and shopping. Add food from photos or free text, see what needs using first, and update stock when you cook.

A working beta with reviewed food capture, recipe matching and stock updates in one flow.

React / TypeScript / Hono / Claude API

Read the case study

I care about the details.
And how they fit together.

My focus is front-end. My responsibility can cover the whole application. I can join your team or build a product from the ground up.

More about how I work

The interface

React and Next.js applications, shared components and real-time data. Built to work with a keyboard as well as a mouse.

React / TypeScript / Design systems

What makes it work

APIs, relational databases, document generation and deployment. The parts behind the screen are part of the job, too.

Node.js / Hono / PostgreSQL / Cloudflare

What keeps it working

Component tests, end-to-end coverage and code review. I test the flows people depend on and check accessibility with NVDA.

Testing Library / Playwright / Jest

What are you building?

A new application, a better front end, or another pair of hands on your team.

Let’s talk