MetaMask

Architecting, collaborating and building solutions to 30M/AMU on MetaMask. Helping developers to plugin killer features through snaps and reaching millions of users through the biggest distribution channel on crypto space.

Senior Software Engineer | Snaps | MetaMask

Omni

Working with an amazing team of software engineers to shape a new era of blockchain wallets and financial services. Crypto Wallets need to be safe, useful, and easy to use, and that's all Omni is.

Responsibility:
As a software engineer, my mission is to collaborate with the process of thinking, planning, building, testing, and shipping e2e features on Omni wallet. Omni app relies on React Native, node/nestJS, and a complex distributed architecture to serve its clients.
Main Achievements:
Rebranding/refactoring of the whole product from SteakWallet brand to Omni.
Refactored all animations/gestures increasing performance (both perceived and technical).
Implemented test culture.
Implemented multi staking features opening a brand new possibilities of revenue to the wallet.
Decoupled app's heavy code into respective packages and simplified app codebase with new and more robust architecture as well reducing bundle package.
Improved multi-chain interactions through architecture design and standard, so that not only the mobile app but any consumer could easily consume Omni APIs.

App Stack/App Stack/characteristics:

React Native
NestJS
Zustand
Blockchain SDKs
GraphQL
Contentful CMS

Software Engineer | Web3 | MultiChain

Status

Status is a multi-purpose communication tool that combines a private messenger, decentralised crypto-wallet, and Web3 browser. 

Responsibility:
As a core contributor, I had the responsibility to maintain Status app as well implementing new features using clojureJS, React Native, Golang, while relying on WAKU protocol. 

Main Achievements:
Shifting into clojureJS functional mindset.
Deeply integration into blockchain protocol WAKU and STATUS-GO internals with GOLANG while delivering smoothly UX to increase user adoption.

App Stack/characteristics:
clojureJS/React Native
Golang
P2P
RPC

OS Contributor | Web3 | Ethereum

impactMarket

Impact Market is a decentralised Poverty Alleviation Protocol which enables any vulnerable community to implement poverty alleviation mechanisms, like Unconditional Basic Income. Impact Market relies on blockchain to offer transparency, reliability and trust to all actors involved (donors, beneficiaries, community managers, etc). IPC uses CELO blockchain ecosystem with React Native and NextJs to build the entire solution.

Responsibility:

As the main React Native mobile engineer I implemented all the refactoring/change needed to accomplish a move from the old UI/UX into new design/brand, improving UX and performance to IPC users, and preparing the app for the upcoming token lunch. I was also involved in blockchain interactions from the API side due a movement of refactoring the app to decouple it from the blockchain's SDK directly.

Main Achievements:

Rebranding/refactoring of the whole product.
Decreased app bundle in almost 60% due a heavy refactoring and decoupling of SDK logic.
Increased performance of main screens in at least 30%, after refactoring state management and code approach.
App Stack:

React Native
NestJS
ethers.Js

Software Engineer | Web3 | Celo

Optune

Oscillate is a web-app based startup with an ambitious goal to help artists, influencers, and business
owners to create a one-stop webpage and centralize all their content. Easy, Fast, and Affordable. Within
10min our users are able to design and publish their pages without any tech skill.

Responsibility:

Lead one of the project trails of the company, which later became the main product until today. Working with a stack based on meteorJS + graphQL + ReactJS daily. Lead developers team.

Main Achievements:

Rebranding/refactoring of the whole product due pandemic constraints and being able to launch on time and drop previous CAC metric due increasing conversion rate.
App Stack:

nodeJS/meteorJS
React JS
Stripe
GraphQL

Senior Front-end Engineer

Visual Nuts

Responsibility: 

Architecture definition and app bootstrap (iOS/Android) to a logistics startup building a GPS/tracking event driven based app.

Main Achievements:

Solo developer - MVP build from ground one
Improvements on Kafka channels architecture based on app needs.

App Stack:

Kafka
nodeJS
React Native/Expo;
Redux

Main Features:
Authentication;
QR Code sign up;
Chat;
Maps integration;
GPS live tracking;
Customer signature capture;
Device info;
Offline first queues approach;
Perimeter detection;
Push notifications;
Multi-language;
Design System;
State management w/ Redux/Saga;

Senior Mobile Developer

Freelancer

As a freelancer, I had the opportunity to work with projects of all kinds and sizes. From boostrapping a mobile project using React Native as main tool to an Angolan startup, basically translating Figma designes into an app, passing by blockchain companies on TRON, and Ethereum ecosystems, when blockchain wasn't mainstream, to being part of a RN mobile squad of the biggest telco group in Belgium serving more than 3M users/monthly.  The Java Script ecosystem (React Native, ReactJS, nodeJS) and its variants and golang were the main tools used in all the projects I've been working with. I also served as architecture advisor for full stack projects in early stages to help architecture and technology stack definitions based on projected use cases, market, and budget.

Independent Software Developer

Criticall Consulting

CRITICALL is a mission critical firm with mainly focus on Oracle portfolio. We deliver high quality services and budget oriented solutions. Our delivered projects ranges from Engineered System to Fusion Middleware offers. We are located at Rio de Janeiro and Lisbon.

Owner and principal senior architect of complex system solutions based on variety of Oracle products, ranging from SGBDs, Exadata, OSBs, Middlewares, ERPs.

Co Partner

Logica

I was responsible for all Oracle daily tasks in a large and complex environment, deliverying support to many customers of Logica Portugal.  I was also responsible for database creation/migrations, backup/recover plaining, performance tunning and Oracle E-business Suite management.

Senior Oracle DBA

TMN Portugal

In this position I was responsible for Data Warehouse and Data Mart management, involving all day-to-day DBA duties (performance tuning, monitoring, backup strategies with RMAN, space management, install, upgrade) and so on. Worked with databases ranging from 9i, 10G and 11G versions. I was responsible for the databases migration project from 9i to 10G version and for Transportable Database project, migrating DBs 
from Solaris to AIX platform.  I was responsible for database reorganization and compression project resulting in a huge storage space save and RAC Implementation project.

Senior Oracle Consultant

Software engineer/Solution Architect mainly focused on building large scale mobile/web applications with a huge interest in blockchain, distributed systems, and event driven architectures.

Stack of preference: 
Frontend: #Javascript | #ReactJS
Mobile: #ReactNative
Backend: #nodeJS | #Golang | #Rust
Blockchain SmartContracts: #Solidity | #Rust

Life motto: “Without commitment, you’ll never start, but more importantly. Without consistency, you’ll never finish.” - Denzel Washington

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