Luiz Antonio Mitidiero de Moraes Jr., Software Developer in Campinas - State of São Paulo, Brazil
Luiz Antonio Mitidiero de Moraes Jr.

Software Developer in Campinas - State of São Paulo, Brazil

Member since June 9, 2015
Luiz is a creative developer who loves new technologies and entrepreneurship. He loves to work with startups and transform software into products. He's had a passion for technology and what it provides to the world since the age of sixteen, and now he's a skilled developer with leadership/management experience who has built two startups and has over ten years of experience working with front-end technologies and seven years with the back-end.
Luiz is now available for hire




Campinas - State of São Paulo, Brazil



Preferred Environment

Linux, Windows, IntelliJ, Eclipse, Git, Trello

The most amazing...

...thing I've built is financial software which gives a full representation of Brazilian tax laws and manages tax payments for big companies.


  • Front-end Lead Developer

    2017 - 2017
    ChatLabs (via Toptal)
    • Led the development of an admin panel to manage an English web school integrated with Facebook Messenger Bot Platform.
    Technologies: Angular 4, Angular Material 2, Java, Spring Boot, Facebook Messenger, Bot
  • Front-end Engineer

    2017 - 2017
    SaferSit (via Toptal)
    • Built a web system to easily allow parents to find sitters and manage their bookings.
    • Fully integrated with Stripe, including using credit cards for parents and bank accounts for sitters.
    • Built a responsive UI, working on main mobile devices, tablets, and desktop devices.
    • Built a chat system for real-time conversation between parents and sitters using Angular 4 and Firebase.
    Technologies: Angular 4, HTML, CSS, JavaScript, Python, Angular Material 2
  • Front-end Engineer

    2017 - 2017
    Silver Arrow (via Toptal)
    • Built a self-service terminal in Angular to be placed at United Kingdom airports to research other countries and get advice or travel insurance before flying.
    • Developed a complex auto-complete feature ready for touchscreen to find countries by name or keyword.
    • Fully integrated with the Travel Aware United Kingdom Campaign to find and get countries' information.
    • Integrated with Kioware and a receipt printer to print all country information requested by a user.
    Technologies: Angular 4, HTML, CSS, JavaScript, TypeScript, Google Cloud Platform
  • Front-end Lead Developer

    2017 - 2017
    Simon Says (via Toptal)
    • Defined standards and helped manage the team.
    • Built the whole website structure as well as designed APIs and AngularJS architecture.
    • Designed a new revamp using flat design.
    • Integrated with Google Analytics, defining events, goals, etc.
    • Helped with product management, defining user goals, tests, and workflows.
    Technologies: Java, Spring Boot, Angular
  • Owner (Developer)

    2017 - 2017
    Decor N' Up
    • Built a platform for interior and home designers, architects, and all people who love or work with homes to find inspiration, jobs, etc.
    Technologies: Angular 2+ (Angular 4), Java, Spring Boot, MySQL
  • React Developer

    2016 - 2016
    Autolotto (via Toptal)
    • Worked with React to build an amazing app to enable people to play the Powerball lottery.
    Technologies: HTML 5, CSS 3, Sass, JavaScript, React
  • Angular 2 Developer

    2016 - 2016
    Hello Computer (via Toptal)
    • Helped develop a tool to animate and display reasons to visit South Africa.
    Technologies: Angular 2, HTML 5, CSS 3, Animations, JavaScript
  • Front-end Developer (AngularJS)

    2016 - 2016
    Mirelz, Inc. (via Toptal)
    • Developed a web app which allows users to design their jewelry style with a designer.
    Technologies: HTML, CSS, JavaScript, Java, Maven, AngularJS
  • Front-end Developer (AngularJS)

    2016 - 2016
    Sweet (via Toptal)
    • Developed a dashboard to manage social network integrated contests.
    Technologies: HTML, CSS, JavaScript, LESS, AngularJS
  • Full-stack Web Developer

    2015 - 2016
    Votecircle (via Toptal)
    • Built a system that represents the 2016 elections, including candidates, proposals, and priorities on all levels from federal to state and local elections, including statewide measures and local propositions.
    • Integrated candidate pages with mainstream social media like Facebook, Twitter, and YouTube.
    • Created a reusable commenting system for everything related to elections: Politicians, propositions, measures, questions, etc.
    • Developed a social network to discuss about politics, including features like following people/candidates/subjects, writing articles, and viewing timelines with the main articles according your preferences and people you follow.
    • Set up user behavior tracking and analytics.
    Technologies: Java, Cassandra, Spring Boot, Social Libraries, NoSQL, REST API, Ansible, EC2, S3
  • HTML/JS/CSS Expert with Knowledge of Ruby Frameworks

    2015 - 2016
    PriceBlink (via Toptal)
    • Built Chrome and Firefox extensions for Priceblink and InvisibleHand.
    • Conducted QA testing.
    Technologies: Chrome Extension, HTML, CSS, JavaScript, Ruby
  • AngularJS Web App Developer

    2015 - 2016
    Stein Labs (via Toptal)
    • Created a school management software.
    • Created a powerful report tool.
    • Developed a new system architecture for this software.
    • Built a log-in system with flexible roles.
    • Created recurrent payment management.
    Technologies: AngularJS, HTML, CSS, JavaScript, API, REST, JSON
  • Principal Web Engineer

    2015 - 2016
    • Developed a new workflow to sell tickets online that sells 20% more than the old workflow.
    • Fine-tuned a web application which has improved the financial income by 6%.
    • Conducted A/B tests.
    • Transformed the new workflow for selling tickets in a white-label product that can be sold to other companies. It promises to give $25 million in one year.
    • Wrote API specifications.
    Technologies: HTML5, CSS3, JavaScript, jQuery, .NET, C#, REST, IIS, AngularJS
  • Senior Engineer

    2014 - 2015
    • Contributed to the development of software for server orchestration for a company, TOTVS.
    • Integrated Amazon Web Services and Saltstack.
    • Assisted with data modeling, API and action layers, development, and test automation.
    • Developed a portal where customers can input information about their web systems' cloud structure and are given all price information using providers like Amazon.
    Technologies: Ruby on Rails, Grape, Factory Girl, Shoulda Matchers, RSpec, Unicorn, PostgreSQL, HTML5, CSS3, JavaScript, jQuery
  • Team Lead Engineer

    2014 - 2014
    • Led a team that develops a marketplace for special and selected products. Our software was developed in a REST architecture using Java, Spring MVC, Amazon S3, Amazon CloudSearch, HTML5, CSS3, JavaScript, and AngularJS.
    • Managed the project and the team, assigning tasks, analyzing requirements, and hiring third-party resources.
    • Created a new web system interface for virtual shopkeepers that has a 15% higher retention rate.
    • Implemented Agile culture inside the company.
    • Developed a crawler that reads web pages and searches for tags to identify virtual shops and its products.
    • Gained Scrum master experience.
    Technologies: Java, JSP, Servlets, Spring, Spring MVC, Spring Data, Hibernate, MySQL, SQL, JDBC, Sphynx, Amazon S3, Amazon CloudSearch, HTML5, CSS3, JavaScript, Ajax, REST, AngularJS
  • JEE Developer

    2012 - 2014
    • Contributed to the development of financial software responsible for giving a full representation of Brazilian Tax Laws and manages tax payments for big companies. In Brazil, all companies have to deal with taxes in two steps each year. First, they have to pay a "main obligations" tax, and second, all companies must have proof that their obligations are payed, called "auxiliary obligations." I was the front-end team leader responsible for creating the software that manages all Brazilian tax obligations in company calendars.
    • Led a team to learn, teach, and start implementations with MongoDB in the company.
    • Created reusable front-end form components with Handlebars and jQuery.
    • Gave a short hands-on course about PhoneGap and hybrid mobile app technology for 25 people.
    Technologies: Java, JSP, Servlets, JSTL, Hibernate, Groovy, Grails, MongoDB, Oracle, BDD (Behavior Driven Development), DDD (Domain Driven Design), TDD (Test Driven Development), Selenium, EasyB, Geb, Spock, Git, CVS, Scrum, Agile, HTML, CSS, JavaScript, jQuery
  • Java Developer

    2010 - 2012
    • Built software which communicates with agricultural machines using XBee, receives and manages data, and gives comprehensible reports for sugar cane plant managers.
    • Developed, as part of a team, primitive map software similar to Google Maps using Java and Adobe Flex to manage sections of sugar cane plantations.
    • Created the international company website.
    • Developed the system at the sugar cane mill headquarters.
    • Created a simple framework to deal with messages coming from the serial port (which XBee uses).
    Technologies: Java, Swing, HTML, CSS, JavaScript, jQuery, Adobe Flex, Hibernate, MySQL, Oracle


  • (Development)

    Sweet is a social contest manager that helps companies to grow their brands in social media.

  • Votecircle (Development)

    VoteCircle aims to increase transparency in elections around the world. We are operating mainly in American elections; the goal is to inform people about the candidates, their intentions, votes, and statistics. Of course what is online is a simple MVP, but as team leader, I contributed enough to make the company appear on TechCrunch as one of most interesting startups of 2015 Web Summit.

    Tech stack:
    • Front-end: HTML5, CSS3, JavaScript, Gulp, Bower, and AngularJS
    • Back-end: Java, Spring-Boot, Apache Cassandra, NGinx, Amazon S3, EC2, and CloudSearch

  • Nowa! App (Development)

    An app to schedule health exams.

  • Whopaloo (Development)

    An app conceptualized and created by me for social discovery activities.

  • Mirelz (Development)

    Mirelz is a app to help jewel designers address their clients.

  • Autolotto (Development)

    Autolotto is a layer to play Powerball lottery thru a mobile app/web.

    I worked in mobile-web version made in React.

  • Simon Says (Development)

    Simon says is an automated transcription service. Basically, you can upload your media files and almost immediately you can get it completely transcribed, with an amazing tool to edit it.

  • SaferSit (Development)

    A platform where parents can easily find sitters.

  • Toptal Mentor
    Luiz is a mentor in the Toptal Global Mentor’s Program. This program is a partnership between Toptal and General Assembly to provide high quality mentorship for students from minority and low income backgrounds who are looking to begin their careers as professional software engineers. Luiz shows commitment to diversity in tech by mentoring a General Assembly student every week for a year, covering everything from coding tips and tricks to advice on making it in the industry.


  • Languages

    Groovy, CSS, HTML5, Sass, HTML, JavaScript, CSS3, Expression Language, Java, TypeScript, CoffeeScript, PHP, Ruby, SQL
  • Frameworks

    Grails, Angular, JavaServer Pages (JSP), AngularJS, Redux, Selenium, Spring, PhoneGap, Spock, GEB, JUnit, Hibernate, .NET, Angular Material, Ruby on Rails (RoR), Swing, JSF
  • Libraries/APIs

    jQuery, React, JSTL, Handlebars, Material 2, Node.js
  • Tools

    Git, Adobe Photoshop, IntelliJ IDEA, Eclipse IDE, Apache Tomcat, Jetty, RSpec
  • Paradigms

    REST, Scrum, Data-driven Development, Object-oriented Design (OOD), Domain-driven Development, Test-driven Development (TDD), Agile Software Development, Behavior-driven Development (BDD)
  • Platforms

    Windows, Linux, Firebase, Google Cloud Platform (GCP), Oracle, Ubuntu, Android
  • Other

    Ajax, Angular Bootstrap, Product Management, Servlets, APIs, Chrome Extensions, Data Analysis, IIS
  • Industry Expertise

    Project Management
  • Storage

    MySQL, Cassandra, MongoDB, PostgreSQL


  • Master's degree in Persuasive Design
    2013 - 2018
    UNICAMP - Campinas, SP, Braazil
  • Bachelor's degree in Computer Engineering (Information Systems)
    2008 - 2011
    Centro Universitário Toledo - Araçatuba/SP, Brazil
  • Technical degree in Informatics
    2005 - 2007
    Salesiano - Araçatuba/SP, Brazil

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