Alexandre Augustus, App UI Developer in São Paulo - State of São Paulo, Brazil
Alexandre Augustus

App UI Developer in São Paulo - State of São Paulo, Brazil

Member since September 22, 2019
Along with product and leadership skills, Alexandre is a developer with several years of hands-on experience and technical expertise. This hard-to-come-by skillset has helped him translate business and user needs while overcoming technical challenges to build excellent products. A notable example of this is when Alexandre helped PagSeguro transition into a unicorn company by transforming their digital wallet app into a full digital bank.
Alexandre is now available for hire




São Paulo - State of São Paulo, Brazil



Preferred Environment

Visual Studio, Android Studio, Xcode, Git, WebStorm, MacOS

The most amazing...

...project I've led was the development of a digital bank from scratch while also helping the financial company assemble an in-house product team.


  • Mobile Tech Lead

    2019 - PRESENT
    Crefisa | Credit, Finances, and Investments
    • Led a team of 12 developers in the creation of a digital bank from scratch.
    • Created a lead product team from within the company and assigned employees to each of the lacking product areas.
    • Served as an intermediary for business, product, and technical needs acting as a focal point for the entire mobile app.
    • Built integration systems to work with existing apps and services.
    • Helped prioritize product and technical tasks.
    Technologies: iOS, Android, React Native
  • React Native Architect

    2020 - 2020
    Home City Ice (via Toptal)
    • Reviewed and improved the code.
    • Coded the architecture.
    • Recommended improvements to the React Native app.
    • Guided and instructed developers.
    Technologies: Android, iOS, React Native
  • Mobile Tech Lead

    2016 - 2018
    Original Bank
    • Led a team of ten mobile developers in the creation of a digital bank app.
    • Oversaw the React Native training session for the mobile team.
    • Created development guidelines for the mobile team.
    • Spearheaded the development of multiple apps that supported the core digital bank services.
    • Improved the App Store review rating from 3.5 to 4.7 in two years.
    • Integrated React Native with Twilio using the backend as a gateway.
    Technologies: iOS, Android, React Native
  • Senior Mobile Developer

    2014 - 2016
    PagSeguro UOL
    • Developed a digital wallet app.
    • Transformed the digital wallet into a fully digital bank app.
    • Created credit card app features.
    • Developed the main bank account's app features.
    • Constructed multiple MVPs to validate business ideas.
    Technologies: Kotlin, Java, iOS, Android
  • Full-stack Intern

    2013 - 2014
    • Developed a field service app for a big internet company.
    • Created a modem scanning app.
    • Maintained the app's API C# services.
    • Created GPS- and map-focused apps.
    Technologies: Model View Controller (MVC), C#, Java, Android
  • Independent Developer

    2010 - 2013
    Freelance Work (Apps for the Google Play Store)
    • Developed the SnapSave Pro app.
    • Constructed the app called WhatsApp Offline.
    • Developed and maintained proprietary apps.
    • Researched users and developed products to suit their needs.
    • Constructed an image-editing app.
    Technologies: REST, Java, Android


  • PagBank (4.8 Star Rating in the App Store)

    I supported the transformation of PagBank's app from a digital wallet to a digital bank. I served as the lead developer for multiple features: credit card, prepaid card, multiple cards, checking account, savings account, and transactions.

  • Sales — PagSeguro (4.7 Star Rating in the App Store)

    I developed and maintained a sales app for PagSeguro for their credit/debit card machine users. The app connected to the machine via Bluetooth and had everything necessary for the user to carry out the sale. The app also allowed them to view purchases, print receipts, and manage their digital wallet account.

  • PagVendas

    Focusing on small businesses, PagVendas is an app to help them manage their stocks, finances, sales, commissions, salespeople, and generate digital receipts. I served as the lead developer for those features and developed the core of the application.

  • Original Bank

    I led a React Native team of ten developers in the build of this digital bank app. I created guidelines for the mobile team and not only developed multiple apps to support the core digital bank services but also increased the app store review rating from 3.5 to 4.7 in two years.

  • SnapSave Pro

    When Snapchat was in its early stages, I created a utility app that let Snapchat users download stories, images, and videos. The app then became one of the most downloaded apps in its category (social apps) at the time.


  • Languages

    JavaScript, Java, Kotlin, Python, SQL, C++, PHP, HTML, C#, Go
  • Frameworks

    React Native, Redux, Django, Rx
  • Libraries/APIs

    React, React Redux, Redux-saga, Apiary API, Django ORM, RxJava, RxJS
  • Tools

    Redux Thunk, Zeplin, Figma, WebStorm, Git, Xcode, Android Studio, Visual Studio
  • Paradigms

    REST, Agile, Functional Programming, Asynchronous Programming, UX Design, Model View Controller (MVC)
  • Platforms

    iOS, Android, Linux, Mac OS, Windows, Twilio, MacOS
  • Storage

    MySQL, PostgreSQL, MongoDB
  • Other

    Leadership, Technical Leadership, App UX, App UI, Product Design, Product Management, Tech Sales
  • Industry Expertise



  • Bachelor's degree in Computer Science
    2010 - 2014
    UNICAMP | The University of Campinas - Campinas, Sao Paulo, Brazil
  • Exchange studies in Computer Science
    2012 - 2013
    Roger Williams University - Bristol, RI, USA

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