Joseph A. Profile

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$30 USD / hour

singapore,

singapore

$30 USD / hour

It's currently 9:56 PM here

Joined October 12, 2014

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Joseph A.

@jalquisola

0.0

(0 reviews)

0.0

$30 USD / hour

singapore,

singapore

$30 USD / hour

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Ruby on Rails Developer, Machine Learning Engineer

• 6+ year’s professional experience managing development and deployment of web applications and APIs using Ruby on Rails(RoR) and ExpressJS. • 2+ year’s professional experience collecting, analyzing and evaluating large datasets using machine learning algorithms to understand trends, anomalies, and opportunities and to discover meaningful insights that add business value. • Certified expert in optimizing search engine and mobile marketing campaigns in Google Adwords. Drove return on Ad spend (ROAS) increases of 33% and more by understanding user behavior using Google Analytics Data. TECHNICAL EXPERTISE Programming Languages: Ruby, Javascript, Python, NodeJS Web Frameworks: Ruby on Rails, ExpressJS Data Analysis Tools: Pandas, NumPy, Scikit-learn, Matplotlib, Spark Databases: MySQL, PostgreSQL, Redis Javascript Frameworks: ReactJS, Backbone Testing Tools: RSpec, Capybara, Test Unit Deployment Tools: Amazon Web Services, Docker, Chef

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Experience

Pocketmath Private Limited

Dec 2013 - Present

• Spearheaded the development and deployment of PocketMath’s Vetting System using Ruby on Rails, NodeJS and Amazon Web Services. • Detected 50% of bad adverts by creating a classification model that detects and rejects malicious adverts. • Developed an Application Programming Interface (API) to automate the testing of adverts. • Improved 20% quality traffic by developing a classification model to identify fraud traffic.

Spuul Private Limited

Nov 2012 - Nov 2013 (1 year)

• Refactored RoR application programming interface code resulting 22% improvement on the response time. • Managed database complex SQL queries by adding new tables and indexes, and by breaking it down to simple SQL queries. • Integrated social media APIs such as Facebook, Google+, Twitter and payment gateways APIs such as Paypal, Tappp, Ccavenue, and Qubecell.

Caresharing Inc.

Jan 2010 - Nov 2012 (2 years, 10 months)

• Analyzed business specifications and turned them into technical specifications. • Optimized existing Ruby on Rails web application by refactoring complex codes and adding indexes to MySQL database tables. • Built interactive and responsive web applications using Backbone, Underscore and jQuery. • Contributed to the team in building our application programming interface(API).