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Leonam – React, Firebase, React Native, experts in Lemon.io

Leonam

From Brazil

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Mobile DeveloperSenior
Hire developer
11 years of commercial experience
Cryptocurrency
Customer support
Insurance
Pet care
Public services
Recreation
Social impact
Telecommunications
CRM
Geospatial software
Mapping software
Mobile apps
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Leonam – React, Firebase, React Native

Leonam is a Senior Mobile Developer with a decade of experience in the industry. His expertise includes React Native, Node.js, and Firebase, though his professional journey spans much more. During the technical interview, Leonam showcased an understanding of business needs and the ability to translate them into quality products. His outgoing personality is evident in his involvement in numerous social projects and the many trainees he has mentored voluntarily.

Main technologies
React
5 years
Firebase
5 years
React Native
6 years
Additional skills
iOS
Android
GraphQL
Scrum
REST API
MySQL
Figma
Express.js
Node.js
Design system
AWS
Swift
Java
Typescript
Tensorflow
JavaScript
CI/CD
Integration testing
Unit testing
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior Mobile Developer
Jan 2023 - Jan 20241 year
Project Overview

A social network designed for you to save your favorite places with your friends and discover new places to go anywhere. Its delightful UI enables the user to easily mark a place as Rec a Wanna Go place, and create a variety of collections of places.

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Responsibilities:
  • Created the collections feature (front-end and back-end);
  • Implemented Algolia search integration and text highlighting;
  • Helped to grow from 1000 to +100k users all over the US;
  • Created and implemented a bottom sheet navigation structure;
  • Added smooth 60fps animation to components.
Project Tech stack:
React Native
Firebase
Typescript
Senior Mobile Developer
Jul 2022 - Nov 20223 months
Project Overview

Onuu is a smart banking, life insurance, and personalized guide that empower users to grow their net worth, have more control over their financial lives and reach their goals more efficiently.

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Responsibilities:
  • Implemented an automated budgeting feature for the app;
  • Redesigned some significant parts of the design system;
  • Implemented the social referrals feature;
  • Stabilized the bug-tracking system of the app.
Project Tech stack:
React Native
AWS
REST API
Front-End Web Developer
Dec 2021 - Apr 20224 months
Project Overview

Agent Cockpit is an internal tool designed to unify all the agents' tools in one place, improving the agent experience and enabling them to handle customers' issues more efficiently and quickly.

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Responsibilities:
  • Created all the Front-End screens, navigation, and endpoint integrations with GraphQL;
  • Created all the AWS resources and added CI/CD to the application;
  • Added instrumentation and analytics to the application;
  • Wrote unit, integration, and e2e tests.
Project Tech stack:
GraphQL
AWS
Typescript
Unit testing
e2e testing
Integration testing
React
React
Typescript
Senior Front-End Web Developer
May 2021 - Jan 20228 months
Project Overview

Coinbase is one of the biggest cryptocurrency exchanges in the world. It is the most recommended bitcoin wallet and offers complete services with bitcoins, both on the web and mobile. They make buying, using, and accepting bitcoins easier and safer.

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Responsibilities:
  • Created a unique React Native module to integrate the native Android and iOS messaging SDK;
  • Implemented the new home support screen experience;
  • Integrated a chatbot widget in mobile apps;
  • Created styling tools to shape the chatbot widget;
  • Wrote unit, integration, and e2e tests.
Project Tech stack:
React Native
GraphQL
Android
iOS
Swift
Java
Unit testing
Integration testing
e2e testing
Senior Mobile Developer
Jan 2021 - May 20213 months
Project Overview

Nuage IT offers complete and robust solutions, from elaborating a cloud adoption strategy and roadmap for the companies to the legacy's transformation, optimization, and migration. Leonam participated in a project to create a white-label app with dynamic styling to sell prepaid mobile products.

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Responsibilities:
  • Created Front-End architecture and implemented 90% of the app;
  • Made a complete design for the system;
  • Created a dynamic styling system to make the app look and feel adaptable to the customer's brand;
  • Published the application in both App Store and Play Store;
  • Debugged and resolved the application issues.
Project Tech stack:
React Native
REST API
Full-Stack Web Developer
Aug 2018 - Jan 20212 years 5 months
Project Overview

Crowdpet is a dog and cat photo-sharing app that generates animal welfare data for the public sector. It allows users to contribute to the city's animal census and to help lost animals return home because each photo shared on Crowdpet is associated with a unique animal identity. The application itself contains many essential features like a pet profile with a gallery, event history, maps, lost pet report, pet adoption service, timelines, and more.

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Responsibilities:
  • Created Front-End and Back-End architecture;
  • Debugged and resolved the application issues;
  • Redesigned the existing Front-End;
  • Implemented CI/CD;
  • Created customized libs for the project in native mobile languages;
  • Kept the project updated and evolving over the years.
Project Tech stack:
React Native
JavaScript
Firebase
Tensorflow
CI
Typescript
Node.js

Education

2008
Control and Automation Engineering
Bachelor's degree

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