Elias Zamaria, Developer in San Francisco, CA, United States
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Elias Zamaria

Verified Expert  in Engineering

Software Developer

San Francisco, CA, United States
Toptal Member Since
September 27, 2017

Elias has over 20 years of experience working with computers and over a decade in designing and programming websites. Elias's work experience includes helping parking lot operators pick the optimal prices, making enhancements to AppCentral's flagship product until the company was acquired, and analyzing user behavior data from millions of Android users to make user-interface design decisions at Google.


React, CoffeeScript, Flask, Python
Google Closure, Java, JavaScript




Preferred Environment

Sublime Text, MacOS

The most amazing...

...thing I've coded is a program that solves all of the Cryptopals Crytpto Challenges (more information can be found in my portfolio).

Work Experience

Full-stack Software Engineer

2017 - 2017
  • Implemented and owned a feature to inform parking operators about competitors’ prices and notify them about changes via email.
  • Improved the appearance and capabilities of the charts and pages.
  • Made major improvements to the loading and rendering performance.
Technologies: React, CoffeeScript, Flask, Python

Software Engineer

2015 - 2016
  • Conducted user interface experiments for device setup and new account flows for Android devices. Collected and analyzed user behavior data for tens of millions of users which was used to make various user interface features.
  • Created various user interface features.
  • Improved the accessibility, performance, and flexibility of Android device setup flows.
Technologies: Google Closure, Java, JavaScript

Front-end Software Engineer

2013 - 2013
  • Tested, debugged, and added features to business simulations which were used by organizations including Harvard Business School and Rio Tinto.
Technologies: CoffeeScript

Senior Software Engineer

2011 - 2013
Good Technology (formerly AppCentral)
  • Served as the primary engineer for building iOS and Android mobile applications and cross-browser web applications for organizations including Pepsi, Mitsubishi, Honeywell, and Amgen.
  • Redesigned and refactored the mobile app used for AppCentral's custom enterprise app stores to add various features, fix bugs, and improve the performance.
  • Added several features to admin interface including ratings and reviews.
  • Optimized the admin interface to speed-up loading and rendering.
  • Fixed hundreds of bugs including cross-site scripting vulnerabilities and browser-compatibility bugs.
  • Added a web storefront interface to allow end users to perform the same functions as the mobile app using a desktop browser.
  • Reviewed, modified, and fixed code developed by offshore engineers.
Technologies: Grails, Groovy, jQuery, JavaScript

Software Engineer

2008 - 2010
  • Acted as a key member of the team that built the insurance lead generation vertical from 0 to $600,000 GP per year within a span of nine months.
  • Maintained and enhanced the lead-generation portal application for the insurance vertical.
  • Worked as part of a team that used the OpenX opensource ad server to build an exchange for the social gaming sector.
  • Engineered and built the quiz/survey/poll offerings for Adteractive.
  • Designed several lead-generation portals and websites for the insurance vertical.
  • Functioned as an integration engineer for the insurance vertical—performing lead-generation integrations for around 10-to-15 insurance lead-aggregators.
  • Maintained and documented the integration spec for Adteractive's insurance lead aggregation (host and post) solution.
Technologies: PHP, jQuery, JavaScript

Web Developer

2005 - 2007
VillaAdriatic.com | MontenegroTours.com
  • Designed, developed, and launched a website.
  • Managed and maintained the pages and database.
Technologies: MySQL, PHP, JavaScript

Python 3.7: Minor API Improvements for Binary Sequences (PEP 467)

A feature to make bytes and byte-array objects in Python easier to deal with.

Details regarding the proposal can be seen at the site, Legacy.python.org/dev/peps/pep-0467.

The Cryptopals Crypto Challenges Solutions

A program to solve all of the Cryptopals Crypto Challenges, Cryptopals.com.

Uber Sudoku

A mobile-friendly Sudoku game.

My Stack Overflow Developer Story

I'm in the top one percent of all Stack Overflow users.
2001 - 2007

Bachelor of Science Degree in Electrical Engineering

University of Illinois at Chicago - Chicago, IL, USA


jQuery, React, Google Closure, Google Maps API


Sublime Text


JavaScript, Python, HTML, SQL, CoffeeScript, CSS, Java, Ruby, Groovy, PHP


MySQL, Redis


Flask, Grails, Ruby on Rails (RoR), CherryPy





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