Silas Pedrosa

Bluebenx is a fintech that counts with a range of products and investment options. When I joined the project, the goal was to stabilize the current mobile app (Android and iOS) version and release it to market. During the first three months, I led a team of three engineers to fix bugs, review code, and add critical requirements to reach the market.

In the following three months, I led the technical discussions and architecture of the new version of the mobile app using Flutter and implementing the new design system. Additionally, promoted discussions regarding product roadmap and system's back-end re-design for future-proof microservices integrations.

OAB de Bolso had been in the market for five years solely with their mobile app when they came to my software firm looking for a complete revamp of their UI and the development of a desktop app. I was responsible for the architecture of the brand new desktop app and the challenge to make it future-proof enough to be easily ported to a web environment later on. I decided to use React, Ant Design, and Electron.js for the task. It was (and is) a really powerful and reliable tool to accomplish a near-seamless integration between web technologies and desktop environments.

The result was a really robust app with an easy installation process, self-updates, and reliable premium access checks, besides a modern UI with an intuitive UX so students can focus on their subjects. After the release, the business continued to grow, and they continued developing new features internally. Also, they managed to easily port the application to the web. Today, they count with more than 1.5 million downloads combining App Store, Play Store, and downloads of the desktop app.

MappaDealer is a platform that helps dealerships control their selling process and all the regulations regarding documents and contracts. I was the tech leader, architect, and lead developer of both the mobile app (Flutter) and the web front end (Angular). I led four developers: two developers in the construction RESTful API back end that served the web and mobile clients, and two developers in the construction of the web and mobile clients.

The system was able to store a fully customizable selling process, allowing each client to define their own questions, fields, required documents, and contracts. It was all dynamic in the sense that depending on the user's answers, certain fields, documents, and contracts were asked or not. The system also had an integration with the digital signing service.

Genomika is a laboratory with expertise in molecular and genetics exams for specific purposes, such as rare diseases, oncology, and hereditary pathologies. Their base system was responsible for understanding a long CSV resulting from the DNA sequencing machines and producing a PDF report for the patients, based on a series of complex mathematical rules that were configured through the system by the staff.

I planned a major refactor in several areas of the project: code organization, database structure, design system, mathematical and logical correction of the rules system, and many other business rules. For business reasons and because the system was already in production, we had to do this series of refactors in an iterative-incremental way, so we planned major releases every three months. We had to guarantee that the production system would not break. We would deliver great value at each release.

Developed the Flutter mobile app for the IoTherm MVP, an app for helping people remotely monitor body temperatures of patients in general through a wireless thermometer. The app used Firebase libraries, which led to the choice of RxDart and streams for the basic state management. I also led one developer in building the back end in Firebase, guiding him in the design of the general architecture, database modeling, functions, and access rules to meet the requirements.

Prepared the MVP for release, leaving it tested and ready to go. My contract ended before the app reached the store, so I documented and tested the app, the back end, and its integration. I also trained a new developer in Flutter technology so he could go on with the project.

DT is a car parts supplier that works with several dealerships and thousands of sellers in Brazil. I was responsible for studying the problem, designing the solution, prototyping, and building the whole system. Led one UX designer, two back-end engineers, and one front-end engineer in building a Python and Django RESTful API for the back end, an Angular app for the admin and management part of the platform, and a mobile hybrid app using Ionic and Capacitor.

We developed the whole MVP, resulting in a powerful, intuitive platform that helps managers from DT send technical information, selling arguments, pictures, and videos to many sellers they work with.

PetMore is a platform for pet tutors, providing several services such as discounts in pet shops, pet-specific content, geo-referenced price radar for pet accessories, group buying, and many others. I developed the hybrid mobile app and led three other developers to design the whole system architecture, implement the RESTful API back end, and implement the mobile app.

I was also responsible for aiding the client in product management by defining the roadmap and finding the right delivery strategy for the market.

Inadash is a real estate startup consisting of a mobile and web platform for property viewings and renting in the UK.

I developed the Angular and Ionic Android version of their iOS app. The strategy was to rapidly release an Android version while working on the full rewrite of the platform with the Flutter and Firebase technologies.

I was the technical leadership inside my company conducting various activities such as discussing design matters with the UX team, planning development cycles, guiding individual developers, and promoting discussion regarding architectural decisions. Also, I was in constant contact with the client, understanding the business goals and deciding what value we should bring in each iteration.

FTD is one of the largest educational publishers in Brazil and the world. As such, they have critical demand for reliably managing logistics of orders, shipments, and returns.

I designed the architecture and was part of the development team. The back end was written in Ruby on Rails, the front end in plain HTML, CSS, and JavaScript, and the Android app in Java. During the whole period, I was also the tech leader of three other people.

When I joined the project in 2016, there was an MVP written in PHP in production in need of major refactoring. However, we judged that delivering a mobile app would add more value and impact the business than a refactor. I developed an Android app in Java from the ground up.

In 2017, we thought it was time to refactor the back end, as the system was facing lots of challenges regarding scalability, performance, missing features, and had a lot of tech debt. We then completely re-wrote the system using Ruby on Rails. The project had its difficulties and minor delays but was a success. We delivered a more stable, tested, fast and maintainable platform that lives on until today and grows each year.

A web and desktop application based on AngularJS and Electron.js that transmitted selected pictures in a live slideshow during the events. It was often used on large screens and projectors.

Users could post pictures on Instagram with a certain hashtag, and the system would track them. Staff members could choose which pictures appeared in the live slideshow.

The application let a staff member control the slideshow from a second window, so the whole set up could be done on a laptop screen, while the real feed was transmitted on a public big screen. There were many viewing modes, for instance, a mosaic-like design that would be composed by the many pictures taken during the events.