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Rogério – React Native, JavaScript, Typescript, experts in Lemon.io

Rogério

From Brazil (UTC-3)

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Mobile DeveloperSenior
Back-end Web DeveloperMiddle
Front-end Web DeveloperMiddle-to-senior
18 years of commercial experience
Computer science
Construction
Credit and lending
Cryptocurrency
Fintech
Healthtech
Human resources
Information services
Life science
Pharmaceutics
Travel
Mobile apps
POS systems
Web development
Software development

Rogério – React Native, JavaScript, Typescript

Over fifteen years in the game led Rogerio to understand that quality is what he cares about the most in his work. His tool of the trade is React Native, but he knows many other moves, including React and Node. He likes to be involved in every stage of the project: coding, debugging, testing, and maintenance. Rogerio even has a particular passion for hunting down nasty bugs and organizing a proper software development process.

Main technologies
React Native
8 years
JavaScript
20 years
Typescript
4 years
Node.js
8 years
React
8 years
Additional skills
PostgreSQL
Swift
MySQL
Objective C
Java
Docker
web3.js
Python
Spring
Android
PHP
Apache
SQL
Express.js
AWS
TypeORM
Docker Compose
Golang
Material UI
Amazon S3
Amazon RDS
Lambda
Tailwind CSS
CI/CD
Next.js
Prisma
Direct hire
Potentially possible
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Experience Highlights

Full-stack Engineer
Jan 2013 - Ongoing12 years 5 months
Project Overview

A worldwide network of professionals.

Responsibilities:
  • Worked as a software engineer for several companies around the world, delivering web, mobile, and backend solutions using Java, GO, C#, and NodeJS stack (React, React Native, ExpressJS, and NextJS).
  • Implemented and improved features on several projects for different sectors, from mortgage analysis to medicinal and recreational cannabis, fraud detection, and investments.
  • Built and deployed backend components using REST or GraphQL on Heroku, Vercel, and AWS.
  • Setup CI/CD with Jenkins and cloud infrastructures with Terraform, speeding DevOps tasks up to 5x.
  • To build POS software and rewards apps, employed modern frameworks, patterns, and practices like KISS, YAGNI, SOLID, and Clean Code.
  • Designed architecture and implemented social media, chat and dashboards.
  • Published several apps on Google Play and Apple Stores.
Project Tech stack:
React
.NET
.NET Core
React Hook Form
React Hooks
React Native
PostgreSQL
Tailwind CSS
Python
Node.js
Next.js
Nest.js
Senior Development Operations Engineer
Dec 2022 - Nov 20241 year 10 months
Project Overview

Simplify the research process for organizations relying on peer-reviewed content to inform business decisions.

Responsibilities:
  • Maintained FAST ESP platform clusters.
  • Maintained reports using CSS, HTML, Javascript, Typescript, React, Vite, PHP, Python and Perl.
  • Was in charge of management/configuration of Cacti reports/charts.
  • Acted as DevOps maintaining Jenkins build pipelines, migrating AWS Cloud Formation stacks, and updating RDS databases.
  • Created ansible roles to build FAST ESP-based images for EC2 instance deployment.
  • Worked on improving Jenkins CI/CD pipelines building Java applications with Gradle.
  • Migrated several service APIs between AWS accounts.
  • Deployed IT infrastructure with Docker, Kubernetes, Terraform, and AWS ECS + Codedeploy.
  • Supported several tasks on FAST ESP to Opensearch migration.
  • Created base FAST ESP AMI for search and data ingestion testing purposes. Also supported migration of more than 40 million documents.
  • Deployed and fixed several production-level deployments.
Project Tech stack:
AWS
AWS CloudFormation
AWS SES
Airflow
Amazon ECS
Amazon RDS
Amazon S3
Amazon SQS
CI
CD
Jenkins
CentOS
Perl
Python
Software Engineer
Feb 2021 - Jan 20231 year 11 months
Project Overview

A DeFi dashboard where you can track your blockchain investments, from tokens, to yieldfarms, assets landed and borred and liquidity pools.

Responsibilities:
  • Wrote admin dashboard using React and Material UI to handle more than 20+ defi projects data, product types, products, 200+ tokens, and other DeFi-related investments.
  • Built and deployed NodeJS API and background jobs to read blockchain explorers like BscScan and others to read token information and token pairs to help with asset calculation.
  • Made several UI improvements on the main DeFi dashboard and evaluated potential additions to increase tool value.
Project Tech stack:
React
Material UI
web3.js
PostgreSQL
Heroku
Typescript
Node.js
Redis
Full-stack Software Engineer
Jan 2012 - Jun 20124 months
Project Overview

An HR platform where companies can search for best candidates for open positions and candidates can upload their CV and share their professional experience.

Responsibilities:
  • Redesigned job vacancy searches using ASP.NET and jQuery.
  • Analyzed and improved search backend on top of FAST ESP platform.
  • Built UI search components, accelerating development process up to 20%..
  • Debugged issues and proposed improvements.
Project Tech stack:
.NET
.NET Core
jQuery
C#
Microsoft SQL Server
Senior Software Engineer
Aug 2007 - May 20113 years 9 months
Project Overview

A technology company founded in 1998 with a focus on developing and integrating complex, high-performance and scalable systems. Their highly skilled team has delivered over 1500 successful projects for dozens of clients.

Since 2016, they have been focusing on digital transformation, enabling our clients to overcome the limitations of traditional on-premises business applications and unlock the power and flexibility of the cloud.

Responsibilities:
  • Built callcenter web app for credit card investment analysis using JSF + Ajax.
  • Built the first movie theater ticket app in Brazil using Objective-C for iOS and Java for Android.
  • Built strategic tool for local communications carriers to allow its users to search for company critical information using Java and JSF.
Project Tech stack:
Java
PostgreSQL
JavaScript
AJAX
Python
iOS SDK
Core Java
Android

Education

2005
Internet and Networks
Associate Degree
2016
IT Governance
MBA

Languages

English
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