Flutter Mobile Engineer

• Sep 2022 - Present

Allocated 100% to the company 4Privacy, it is a company that offers an end-to-end encrypted cloud storage service, like an encrypted Google Drive. This guarantees that no one but you and the people you authorize will have access to your data because not even the server can read your data without the key that only the user has. Because of the concern for privacy, and the responsibility to store this data securely, without any instability for the user to access your files anytime, a few pillars were needed: 1. Stability, the service cannot be offline or inaccessible due to bugs and errors. 2. Reliability, the application needs to appear secure to its users, as we are looking after their privacy. 3. Security, all files must be encrypted end-to-end 4. Multi-platform, users need to be able to access their files from any device. To make this possible, I was responsible for maintaining the pillars throughout the application. - The same code is being used for all platforms using Flutter. iOS, Android, Windows, macOS, Linux and Web - Use of Isolates for all heavy operations and Wasm on the web. - Developing new features, optimizing application performance, optimizing the use of memory and storage used by the application. - Create and maintain integration tests for the entire application and platforms: These are automatic tests that go through the entire application, testing each use case, each exception case and possible bugs. This way we can maintain a consistent, automatic and reliable test, maintaining stability between all available versions and platforms. (The integration test works as if it were a user clicking on the buttons and doing the actions, so we can have a more complete test, as it uses the same scenario that the user will have, using the same device and APIs as him). Show less

Flutter Specialist Developer

• Oct 2022 - Present

Mobile Engineer, Flutter Specialist

• Feb 2022 - Oct 2022

- Responsible for developing and maintaining the mobile application using Flutter, ensuring optimized performance and intuitive interfaces. - I worked on both company projects, the existing one (Dibbs), a marketplace for collectible cards tokenized as NFTs, and the new project (Vault) which handled the secure storage of collectibles for NFT tokenization. - I increased the test coverage of the project from 10% to 95%. I reduced CI/CD costs by over 75%! One of the significant actions I took on the project was the optimization of unit tests, which took between 10~15 minutes (locally) and over 60 minutes when run through GitHub Actions, resulting in high CI/CD costs. After extensive research and applied knowledge, I managed to reduce it to less than 3 minutes (locally) and 5 minutes (GitHub Actions), an improvement of over 80~92%! Show less

Mobile Flutter Developer Specialist

• Jun 2021 - Feb 2022

I was allocated on “BV Bank” with the “Onboarding” squad, I helped to create and maintain the bank application for companies. Specifically, the login and all processes of registration with the documents that are needed to open a digital bank account. In part of my time, I help other squads belonging to the biggest app of the company, the application for private individuals, that has more than 5 million downloads. Another significant action that I did, was the migration of the Flutter app from 1.17.5 to 2.8.0 with null safety, which was a big challenge, because the application has about 30+ micro-apps, each with a squad that is the one responsible for it. In terms of technologies that I’ve worked on, are Firebase, Unit tests, GetIt, BitBucket, Jira, Shell scripts, SQL, Clean Architecture, REST, Fastlane, Kotlin, Swift, Objective-C, Jenkins, Dynatrace, Confluence, Agile and Sonar. Show less

Stack Leader Flutter Developer

• Mar 2021 - Jun 2021

Co-Leader Flutter Developer

• Dec 2020 - Mar 2021

Mobile Flutter Developer

• Feb 2020 - Dec 2020

I developed native apps for Android and iOS from scratch with Flutter until publication in the Play Store and App Store. Suggest improvements in projects, perform preventive/corrective maintenance on applications already published, learn new technologies to improve development processes, work as a team. I also developed tools to facilitate, streamline and standardize the development of the company's Flutter projects, as well as contributing to the community with this.Some technologies that I worked there are Firebase, Cloud Functions, Unit tests, GetIt, Flutter Modular, Mobx, BLoC, Provider, Codemagic, Gitlab CI/CD, fastlane, Clean Architecture, TypeScript, a little about NodeJS, REST, Kotlin e Swift. Show less

Co-founder

• May 2019 - Feb 2021

I worked as a founder along with my other 3 partners, together we developed this solution for restaurants and cafeterias, which aimed to facilitate the entry of small businesses that are not yet computerized. So that you have a system that groups all your sales history, eliminating the use of paper during work and making management of the establishment much easier, with graphics and BI. The system is divided into modules, which are: - Base: This is the initial module that every system has. In it, you can manage all orders, from creating new orders, managing orders in progress (kitchen), to viewing graphs. - Delivery: In it, you can integrate the most diverse delivery services, such as iFood, Uber Eats, 99 Food ... As well as we also offer an online menu with all the products of the establishment, where the customer can buy through the website to arrive at your home or even pick up at the establishment. - Self-service totem: From the totem, the customer can place the order more easily without needing a waiter or attendant, performing the entire process, even paying for it. Within the company, I worked with the development of all applications, Ex: Main restaurant management/order creation app, Flutter web page for the delivery module, and what I am most proud of, Show less

Leader Flutter Developer

• Jan 2020 - Feb 2020

Mobile Flutter Developer

• May 2019 - Jan 2020

I developed applications on Android and iOS with Flutter, worked with technologies of BLoC Pattern, Reactive Programing, AI, Advanced Animations, 2Dimensions, Firebase, NoSQL, CodeMagic, CI / CD on iOS and Android as well as the registration and deploy in both stores.

Administrative assistant

• Mar 2017 - Feb 2019

I acted as an administrative assistant, posted income and expenses, as well as managed all the bank accounts of the company, paying bills and controlling through systems and reports. I also used a lot of Excel VBA to create the system where I created it myself. I acted as an administrative assistant, posted income and expenses, as well as managed all the bank accounts of the company, paying bills and controlling through systems and reports. I also used a lot of Excel VBA to create the system where I created it myself.

Computer technician

• Jan 2017 - Apr 2017

I worked as a computer technician assistant, formatting computers, installing programs, assembling computers, and maintaining notebooks and PCs. I worked as a computer technician assistant, formatting computers, installing programs, assembling computers, and maintaining notebooks and PCs.