Rafael Kellermann Streit

I'm working with Software Development since 2006 and writing iOS apps since 2010. I live in a very small town in Brazil and I've been working remotely since 2011.

I appreciate high quality products that focus on stability and simple design that works great to the end user.

You can find me on Twitter or write me an email.


Bachelor of Information Systems
FACCAT - Faculdades Integradas de Taquara
2011 — 2017

iOS Development
Apple Developer Academy
2013 — 2014
This was one of the best experiences of my life. I took one year to fully study and understand the basic concepts of iOS development, frameworks and create my own apps, games in order to learn more about the whole process. By the time I was studying at Apple Developer Academy I already had about 3 years of iOS development experience, but I learned lots of new frameworks, new tools and things that are required other than coding in order to get an app ready to rock in the App Store.


2017 — Mentored two students in Google Summer of Code to develop an SDK for Rocket.Chat. The SDKs were developed for iOS and Android in Swift and Kotlin. More info here.

2014 — Participated in a full-year program to learn iOS and create applications from Instituto Eldorado in Porto Alegre. More info here.

2014 — Carddi application was mentioned on weekly application from Abduzeedo blog. One of the most known blogs about design in the world. More info here.

2012 — Received the certification of Titan from Appcelerator by many contributions on the platform Titanium Mobile.

Work experience

Mobile Team Leader
2015 — Current
Working as the Mobile Leader of the team, leading the iOS team with two developers and the Android team with three developers. Rocket.Chat is one of the majors open-source chat platforms in the world right now, with more than 10 million users world wide.

We Heart It
iOS Leader
2015 — Current
Working as a iOS engineer. iOS app that allow users to be inspired by other’s users images and inspire other users. The app is used by more than 2 million users daily and 10 million users monthly.

iOS Leader
2014 — 2018
Worked as a iOS engineer. iOS app that allow users to ship and pay things that they want to send by mail.

Back-end Engineer
2013 — 2016
Worked as a back-end engineer using Django/Python with Nginx to serve more than 3000 req/s. Also, this application uses RabbitMQ and Celery to support multiple tasks in a distributed system.

Mentor Analytics
Co-founder & Mobile Leader
2014 — 2018
Co-founded and leader of Mobile of Mentor Analytics. It's a platform of agile development for BI (Business Intelligence) applications.

iOS Consultant
2012 — 2018

iOS Leader
2014 — 2015
Worked as lead iOS Engineer. Music application that has more than 1 million active users every month.

iOS Software Engineer
2013 — 2014
Worked as an iOS Engineer. Users can put some items to sell and others can purchase the products. Have more than 1 million active users every month.

Mobile Engineer
2012 — 2014
Worked as an iOS and Android Engineer using Titanium Mobile. Foxter is the biggest real state on Rio Grande do Sul.

Co-founder & Mobile Leader
2012 — 2016
Started the company to create a new way to find restaurant menus. Currently has more than 200 restaurants with full menu registered.

Software Engineer
2011 — 2013
Worked as a Python/Django Engineer, focusing on creating a platform for customers manage their informations to consume on an iOS and Android application.

“Instead of pretending that we are living some great story, we must remain focused on the execution — and on executing with excellence”