# Rafael Fernandes Lopes

Rafael Fernandes Lopes is a remote worker on Himalayas, Senior Software Engineer at Fullstack Labs, based in Brazil.

Source: https://himalayas.app/@rafaelfernandeslopes

```text
Senior full-stack software engineer at Fullstack Labs, building Britannica Education's SSO platform for 15 products and 5.6M+ student accounts.
```

| Detail | Value |
| --- | --- |
| Availability | Open to opportunities |
| Location | Brazil |
| Authorized to work in | Brazil |
| Salary expectations | 40k+ BRL |
| Job categories | Full Stack Engineer, Software Architect, Frontend Engineer, Front End Developer, Full Stack Developer, Full Stack Engineer, Backend Engineer, Software Engineer |
| Skills | Fullstack Development, TypeScript, JavaScript, React, Next.js, NodeJS, Python, Java, Spring Framework, AWS, GCP, SSO, OAuth, JWT, REST APIs |
| Website | https://rafaelf.dev |
| Portfolio | https://rafaelf.dev |
| LinkedIn | https://linkedin.com/in/rafael-fernandes-lopes |
| GitHub | https://github.com/rafaelfsl |

## About

```text
At Fullstack Labs, I built Britannica Education's Next.js and TypeScript portal, unifying single sign-on across 15 products and serving 5.6M+ student accounts. I also helped launch Britannica Studio's AI teaching workspace and built the streaming chat interface for Ask Britannica.

As co-founder and lead developer at ImaginaKIDS, I led product and engineering as the company grew to R$490k ARR, building six products for students to write and illustrate books. Alongside that work, I taught Computer Science and supported entrepreneurship and software research at UFMA and IFMA.
```

## Experience

### Senior Software Engineer (current)

Fullstack Labs. Mar 2022 - Present

```text
Unified single sign-on for 15 products serving 5.6M+ student accounts by building a Next.js/TypeScript Education Portal and migrating legacy Java products. Helped launch an AI teaching workspace and cut API calls by 67% with batch endpoints.
```

Skills: TypeScript, Next.js, React, NodeJS, Python, Java, AWS, Terraform, CircleCi, Jest, React-Testing-Library, SSO, OAuth, JWT, WCAG-2.1-AA

### Co-founder & Lead Developer

ImaginaKIDS. Oct 2017 - Mar 2022

```text
Grew an EdTech startup from zero to R$490k ARR with under 10% churn, reaching 15k+ students and 380k+ pages created. Built 6 products from scratch, including a React Native iPad app and a Node.js book-to-PDF service.
```

Skills: React-Native, React, Flutter, NodeJS, Django, Swift, Bull, Ecommerce, Product-Management

### Associate Professor, Researcher & Innovation Director

UFMA and IFMA. Jan 2006 - Dec 2022

```text
Mentored startup founders and managed R&D software projects in web, mobile, and distributed systems. Taught Computer Science, supervised Master's students, and published numerous journal articles and conference papers.
```

Skills: Project-Management, Web-Development, Mobile-Development, Distributed-Systems, Teaching, Research, Mentorship

### Web Developer

UFMA IT Center and Fapema. Jan 2003 - Dec 2006

```text
Built and maintained university and Fapema websites and information systems using PHP, MySQL, and Java EE.
```

Skills: PHP, MySQL, Java-EE, JSP, JSF

## Education

### Federal University of Campina Grande

Ph.D., Electrical Engineering

```text
Ph.D. in Electrical Engineering from the Federal University of Campina Grande, completed in 2013.
```

### Federal University of Maranhão

M.Sc., Electrical Engineering

```text
M.Sc. in Electrical Engineering from the Federal University of Maranhão, completed in 2006.
```

### Federal University of Maranhão

B.Sc., Computer Science

```text
B.Sc. in Computer Science from the Federal University of Maranhão, completed in 2003.
```

## Tech stack

- CircleCI
- GitHub Actions
- React Native
- Flutter
- Sass
- MySQL
- PostgreSQL
- MongoDB
- Oracle
- Node.js
- Django
- Spring
- Next.js
- Spring Framework
- Tailwind CSS
- Redis
- Terraform
- Jest
- React
- JavaScript
- Python
- Java
- PHP
- Swift
- Dart
- Java EE
- RabbitMQ
- MQTT
- Firebase
- gRPC
- AWS Lambda
- Serverless
- Netlify
- TypeScript
- React Testing Library
- sso
- Docker
- SQL
- Vitest
- Redux Toolkit
- Express
- AWS
- REST APIs

To contact Rafael Fernandes, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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