
Oscar
From El Salvador (UTC-6)
8 years of commercial experience
Lemon.io stats
2
projects done1635
hours workedOpen
to new offersOscar – React, React Native, Next.js
Oscar previously worked in customer service, where he excelled at building strong connections with customers. Driven by a passion for technology, he transitioned to programming and now supports teams with his front-end skills, particularly in projects aimed at enhancing the healthcare industry. Additionally, Oscar has a keen interest in personal finance and has delivered several public speeches on managing income wisely.
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Let’s get started today!Experience Highlights
Tech lead
A newly launched finance tracking app that allows their users to plan their monthly income, expenses, savings and debt payments.
The app provides several alerts, messages and notifications to let the users know when they are about to expend more than they earn or if they are about to use up their budget for a specific category.
- Created project architecture;
- Created the marketing site;
- Deployed the app to iOS;
- Was part of the project's planning, research and development efforts.
Senior Front-End Developer
One of Texas largest landscaping groups. Oscar was in charge of the migration of their CRM from an old version of React to a newer version in Next.js
- Implemented Storybook;
- Refactored the logic to show user visits in the system's scheduler;
- Fixed authentication errors;
- Migrated the whole codebase from JS to TS.
React Native Developer
A medical application focused on providing exercises for clients who suffer chronic pain, accidents, or pain after surgery. The React Native app syncs with sensors provided to the client to track their movements and confirm that they are doing the exercises properly.
- Updated progress' bar UI;
- Improved performance in the pre-workout session screen;
- Added a survey at the end of each training for the users to rate their session;
- Upgraded to typescript's latest version;
- Fixed bugs in several exercises where the image wasn't displaying correctly;
- Wrote unit tests.
React Native Developer
An application dedicated to improving users' lives by tracking fasting hours, providing helpful resources to improve their diet, and connecting with other users as a community.
- Improved the app's performance by 30% in the initial screen and profile views
- Wrote unit tests
- Configured Hermes for Android builds
- Implemented victory-native to show graphs in the user's calendars.
Tech Lead
An application helping users find the best real estate opportunities by providing several key indicators to determine the price of properties and their possible growth in value.
- Created stories alongside the PM;
- Implemented storybook to test components;
- Worked on the Front-End architecture;
- Integrated ApolloGraphQL;
- Handled constant communication with the client to present updates and lead debugging sessions with the team.
Front-End Developer
The site shows the player's roster, games schedule, news, and blog posts about what the team is doing in the games and as an organization.
I was in charge of renovating their site using a new design system that alligned with the team's uniform and stadium seat layout for their 2020 season.
- Implemented the new design in all the sections under the "Community" tab: education, athletics, activities, foundation, scholarships, donations, HEAT academy, community requests, jr.HEAT;
- Redesigned the team roster page;
- Improved A11Y and overall web core vitals.