---
title: "Poleza Tecnologia: intelligent systems, human decisions"
description: "Matheus Poleza. Eleven years building product in startups from seed to Series C. AI consulting, fractional CTO and product engineering for companies putting AI into internal processes."
url: https://polezatecnologia.xyz/en
lang: en
---

# Intelligent systems. Human decisions.

I am Matheus Poleza. I help founders and leadership teams turn product, engineering and AI challenges into systems that grow with the business.

- 11 years building product
- 5 startups from seed to series C
- 5 rounds lived from the inside

Joinville, Brazil · remote

## What I do

Four ways to work with me. The first three are scoped engagements, the last one is full time.

### AI in internal processes

Internal processes · main

We pick a process with real volume and ship it to production with the evaluation criteria written down first.

### Agents in production

Agents · delivery

Evaluation and observability ship with the agent, so you find out it broke before your customer tells you.

### Fractional CTO

Advisory · part-time

Architecture, build or buy, a review of what is already running. Technical decisions without hiring a team first.

### Product engineering

Product · full time

From discovery to code in production, inside your team. It is what I do full time at Jam.

## Results I built

Each company caught me at a different stage. This is what stayed behind.

### ContaAzul · +30%

New ContaAzul checkout with full A/B measurement. Conversion went up by more than 30%.

Read more: https://polezatecnologia.xyz/en/blog/checkout-contaazul

### Creditas · 30%

Creditas platform for affiliates and banking correspondents. It became the best acquisition channel in the company, with more than 30% end to end conversion.

Read more: https://polezatecnologia.xyz/en/blog/afiliados-creditas

### Origin · 0 → 1

A financial wellness platform built from scratch. Product market fit validation, strategy, infrastructure and hiring the team.

Read more: https://polezatecnologia.xyz/en/blog/financial-wellness-origin

### Voiceflow · 100k

Requests a day at 99.9% uptime on the Voiceflow services I architected, alongside the framework that brought LLMs into the product.

### Jam · MCP + CLI

Connecting Jam to agent workflows through MCP and the CLI.

## I have been building product for eleven years

I work as a product engineer for American companies. What is already routine inside them takes a while to arrive here, and that gap is what I shorten for Brazilian companies.

- ContaAzul, Creditas, Origin and Voiceflow. I went through five funding rounds from inside the engineering team, from Series A to Series C.
- I spent the last four years building an agent platform at Voiceflow, before it became a market topic. Today I build product at Jam.
- I also run Citou, where I test first what I later recommend.

First paid commit: 2014. I joined ContaAzul as an intern and was hired full time before the internship ended. Never stopped since.

## Where I have been

- **Jam** (May 2025 · present): Senior Software Engineer. A debugging tool used by engineering teams in the United States. [Product, AI]
- **Voiceflow** (2021 → 2025 · series A to series B): Senior Engineer and later Team Lead. Conversational agent platform, with LLM integration and the NLU system. [Agents, Backend]
- **Origin** (2019 → 2021 · first year to series A): Lead Frontend Engineer. I joined in the company first year and left one month before the US$ 56M Series B. [Founding, Architecture]
- **Creditas** (2016 → 2019 · series B to series C): Senior Frontend Engineer and later Tech Lead. Affiliate platform, releases from days to hours. [Scale, Platform]
- **ContaAzul** (2014 → 2016 · series C): Intern and later Frontend Engineer. Checkout, design system and the testing culture of the team. [Start, Design system]

## Blog

- [The affiliate platform that became the best channel at Creditas](https://polezatecnologia.xyz/en/blog/afiliados-creditas): A platform for affiliates and banking correspondents that ended up carrying more than 30% of end to end conversion.
- [The checkout that lifted conversion by 30%](https://polezatecnologia.xyz/en/blog/checkout-contaazul): How a checkout rebuilt with full A/B measurement became the largest conversion gain I saw at ContaAzul.
- [From zero to product market fit at Origin](https://polezatecnologia.xyz/en/blog/financial-wellness-origin): I joined Origin in its first year and left one month before the Series B. In between we built a financial wellness platform from scratch.

## Need help?

Tell me what you need, or book a thirty minute call.

- Book a call: https://cal.com/matheuspoleza
- Email: matheus.poleza@gmail.com
- LinkedIn: https://www.linkedin.com/in/matheuspoleza
- Citou: https://citou.me
- Português: https://polezatecnologia.xyz/