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Ruby on Rails developer

New York City, NY
October 14, 2019

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Jefrey Bulla

Developer with a product and entrepreneurial background

New York, NY


Professional Experience

Consulting projects - New York, USA


Company in blockchain

● Integrated blockchain libraries to handle authentication and data lockers that are controlled by users.

● Built back-end using PostgreSQL and Ruby on Rails. Built API endpoints.

● Built React components to handle asynchronous requests. Company in privacy and security

● Designed recommendations algorithm to help users become more private and more secure online.

● Wrote feature specifications for the mobile app. RAYO. Lead developer - San Francisco, USA


● Built social network features such as posting, commenting and liking.

● Built back-end using PostgreSQL and Ruby on Rails.

● Built responsive front-end using React and Bootstrap.

● Deployed app on Heroku and AWS.

TORO LABS. Founder / Product Owner - New York, USA 2013 - 2017

● Translated ideas and objectives from stakeholders into roadmaps for mobile and web applications.

● Coded demos in PHP, Python/Django, Ruby on Rails, HTML, CSS, Swift, and Java. Publications

“Implementing a simple microcontroller-based interval type-2 fuzzy processor” IEEE Circuits and Systems, 2008. MWSCAS 2008. 51st Midwest Symposium. August 10, 2008. Authors: Jefrey Bulla, Katherine Sierra, and Miguel Melgarejo. Education

Universidad Distrital Francisco José de Caldas - Bogotá, Colombia 2008

B.S. with honors, Electronic Engineering. Advanced coursework in artificial intelligence and programming. Additional Information

● Languages: English (Fluent), Spanish (Native).

● GitHub:

● Website:

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