Bruno Santos
Work with me

I build interfaces, backend, web and mobile apps for products at scale.I am currently a Software Engineer at Monest, a company that processes an average of 2 million messages per day with other major companies.

3M+ Downloads on apps I contributed to
4+ Years of experience contributing to major companies
Black and white portrait of Bruno Santos, shot from below against a white sky.
Right now

What I've been doing

Experience

Companies

A timeline of the companies I have built software for, learning from each one and helping it grow.

Front-End Developer 2021 - 2022

Agência S3

My first steps in the market, at Agência S3 in Porto Alegre. I started out building sites with HTML, SCSS, jQuery and WordPress: one-pages, custom templates and complex admin systems, on desktop and mobile. Over time I moved on to React projects, which is where I learned to work in a team, take on client deadlines and turn a layout into production code.

HTMLCSSSCSSjQueryReactWordPressCordova
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Front-End Developer 2022 - 2023

AllScripts

Front-end support for several products at AllScripts TI. The main one was a website builder that had to be fully dynamic, letting users assemble their own site much like in WordPress or Wix. Web projects ran on React or jQuery, depending on the product, and mobile apps were built with React Native and Expo.

ReactReact NativeExpojQueryTailwindBootstrapSass
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Mobile Developer 2023 - 2025

Rethink

Embedded in the Rethink team, I built features for two of Brazil's largest loyalty platforms: Smiles (Gol Airlines) and Esfera (Santander), each with 2M+ downloads. I shipped React Native and React features used by millions, refactored legacy code and wrote Jest tests.

React NativeTypeScriptReduxZodJest
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Mobile Developer 2025

Husky

The Husky courier app was Android-only and built on an outdated stack. I built the v2 from scratch in React Native, now on Android and iOS, with full autonomy: architecture, technologies and workflow were all my call, with no more experienced engineer to make decisions or help with development.

React NativeExpoTypeScriptReduxZodSocket.IOFirebasePush notificationsNative modules
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Software Engineer 2025 - now

Monest

Monest is an AI platform for debt collection that works with many major players like Nubank, Itaú, Carrefour, Banco Inter and others. I build the integrations with these companies so Mia (AI) can collect from debtors, importing debtors and messages at scale. So far that adds up to 3M+ agreements, 36M+ debtors, 500M+ messages and R$ 800M+ recovered.

NestJSNext.jsTypeScriptMikroORMTanStackYupTailwindBullMQRedisLangChainOrvalSwaggerJestNew Relic
Visit Monest (opens in a new tab)

Works

About

I'm from the generation of devs who got into the industry when there was no AI to explain the error. Stack Overflow, documentation and a lot of persistence shaped how I think and solve problems to this day.

Software engineer with over 4 years of experience, born in Pelotas, currently living in Porto Alegre and contributing with people and projects from all over Brazil and the world.

Soft skills

How I work

Ownership

I build and lead features and products from the first idea to production.

Clear communication

I am Brazilian and my primary language is Portuguese. About my English, I am at B1 level (CEFR) and I get by well with some limitations.

Reliability and transparency

I am committed to delivering the best quality in the shortest time possible: I anticipate problems, ask questions and ask for help when I need it, and I keep following how it runs in production after delivery.

Distributed teams

I work daily with product, design, QA and engineering, fully remote, whether on a call or async.

Documentation and handoff

I write the docs that make work easy to pass on: handoff documents, decisions and how things run.

Technologies

Stack

Backend
  • Node.js
  • NestJS
  • Redis
  • BullMQ
Web
  • React
  • Next.js
  • Astro
Mobile
  • React Native
  • Expo
  • Firebase FCM
Quality + AI
  • Unit tests
  • E2E tests
  • LangChain

Voltrama

I'm the founder of Voltrama, a marketplace to share electric vehicle chargers.

Drivers find a charger nearby and reserve it. Owners rent theirs out and set the price and schedule.

nullbrand

I created nullbrand, 100% free and open-source tools that run on your computer.

A 100% free, more modern alternative to the ones you probably pay for. No subscription, no pro plan, no trial period. The tools work offline, run in the browser, with one command or as an installed app, and your data never leaves your machine.

npx nullbrand doctor
works offline
no account · no cloud · no telemetry
no subscription · no pro plan
open source
Bruno
Software Engineer
Hi, I’m Bruno. This isn’t a live chat.
The options below work like an FAQ: you get a ready-made answer right away.
Or write a message of your own. I get it in moments and reply by email.
Who is Bruno Santos?
I’m a software engineer with over 4 years of experience. I build interfaces, backend integrations and web and mobile apps with Nest, Next, Astro and React Native.
How do you use AI?
I use AI as a tool, not a crutch. I grew up without it, so I never accept code without understanding what it does. I use it to map complex flows, debug and parallelize work.
All of it with harnesses, MCPs, worktrees, hooks and skills. Spec-driven development and context engineering keep the agent aligned with the codebase.
How do I get in touch?
Through LinkedIn or right here, just send your message. Just a reminder that it’s not a real-time chat, but I reply within 8 hours.
What can I expect from you?
I can take over a project in progress or start from scratch. I work solo or on a team, leading or being led, always with suggestions and constructive feedback.
I also deliver documentation and tutorials, and I follow the go-live for as long as needed, making sure everything works 100% according to the scope.
What are Voltrama and nullbrand?
They are projects built 100% by me for the community.
Voltrama is a marketplace for EV chargers.
nullbrand is free, open-source tools, with no subscriptions and no catch.