Johnnie Tirado
johnnie@codealo.dev
Hello 👋 and welcome to my portfolio.
⚡ I started programming when I was 15.
⚡ I graduated from Georgia Tech with a degree in Computer Science (Class of 2016).
⚡ I worked at Goldman Sachs and Hux before moving to Lima, Peru to work full-time on Parkner, a StartUp I cofounded. (Learn more)
😷 Due to the pandemic I have been doing Freelance work and teaching programming through Instagram, courses and YouTube.
📝 I share my thoughts about technology and startups in my blog.
Download Resume
Work Experience
Parkner
Cofounder - Chief Technology Officer
June 2016 - Now
- The AirBnb of parking, making it easy to find and pay for parking.
- Developed and published mobile app for Android and iOS using Exp (React Native).
- Created a dashboard for parking lot operators using NextJs (ReactJs) that allows them to manage their daily operations.
- Programmed our backend using C# and .Net Core which connects to a MongoDb.
- Built our CI/CD process using Digital Ocean, GitHub Actions and Dokku.
- Constantly looking to better our product by working closely with customer and parking lot managers.
Hux
Fullstack software engineer
Feb. 2017 - Feb. 2019
- Venture backed StartUp bulding the worlds largest marketplace for services.
- Enhanced the product experience by creating optimized algorithms for time management of the service providers.
- Helped create a new iteration of the product using ReactJs and MeteorJs.
- Used MongoDb aggregation pipeline to create detailed reports for marketing, operations and investors.
- Worked with Grow (a BI tool) to gain insight on customers like churn rate, LTV, CAC, recurring purchase patterns and more.
- Developed and published a mobile application using Expo (React Native) that included real time chat capabilities.
Goldman Sachs
Technology Analyst
Aug. 2016 - Feb. 2017
- Develop web applications using in house tools built on top of Java and AngularJS.
- Created full stack applications while following test driven development and completing the SDLC.
- Worked on data manipulation through the extract, transform and load model with ElasticSearch and DB2 databases.
Goldman Sachs (Internship)
Summer Technology Analyst
May 2015 - Aug. 2015
- Developed skills in Java by using Dropwizard as a backend framework to create a RESTfull service.
- Created weekly reports for the logs of one of the in house application by using SQL and Tableau.
- Established a foundation in front end web development with AngularJS and Goldman Sachs Web UI Toolkit.
Strange Games Studio
Developer
May 2013 - Aug. 2014
- Published and developed four games for the Xbox Live Indie Marketplace and one Windows Phone Game.
- Programmed and designed different aspects in each game, ranging between level designs to User-Interface.
- Experienced the game development cycle going through the birth of a game idea to the final days of development.
Consulting
Akcelita
Website and code optimization
July 2020 - Now
- Akcelita is a StartUp operating in Puerto Rico and Miami.
- Updated a part of their current web application that allows clients to configure their parameters.
- Optimized part of their core algorithms written in Python by implementing it using Cython.
- Performance increased by 50% after migration of code.
Megapack Group S.A.C
Web application for sales
July 2020 - Oct. 2020
- Designed a quote and invoicing system for the sales team.
- Used GraphQL with Apollo Server and hosted it with Digital Ocean.
- Migrated a process that used to be done through Excel and decreased the amount of human errors.
- Streamlined the process from quote to invoice by being able to connect both data point through the system.
- Added a module for customer support which allows clients of the company to fill out a complaint form with image and video upload capabilities.
Projects
Hoyo 19
Mobile Application
Social golf app that allows you to keep track of your performance and play games between players
Expo
React Native
GraphQL
NodeJS
Express
MongoDB
Digital Ocean
Happy Meal
Mobile Application
Playful app that helps you choose where to eat next. Using a swipe interface multiple people can choose which restaurant they like the most.
Expo
React Native
Firebase
Google Maps
Kamel
E-commerce
E-commerce platform for small businesses that have started during the pandemic. Affordable and quick to set up. Orders are managed through WhatsApp.
NextJs
Strapi
NodeJs
ReactJs
Technologies
Languages
C/C++
C#
JavaScript (Typescript)
Java
Python
GraphQL
SQL
MongoDB
Frameworks
.Net Core
Express
ReactJs
React Native
Tools
Docker
Digital Ocean
Dokku
Elastic Search / Kibana
Strapi
Git