Ruby, Ror, Ajax, Javascript, React.Js, SQL, Git, Html5, Css3

CHENG “CHRIS” TSAI

Phone 530-***-**** t *********@*****.*** w ww.chengtsai.com

SKILLS

Ruby, Ruby on Rails, AJAX, JavaScript, jQuery, React.js, Redux, Flux, SQL, Heroku, Git, PostgreSQL, HTML5, CSS3, SCSS, RSpec, TDD

WORK SAMPLES

SafeWeb Extension for Google Chrome Live Site Github A Chrome Extension to help parents monitor their child’s internet usage.

● Implemented keyword filtering feature by dynamically manipulating the DOM to remove the contents containing inappropriate keywords.

● Used Chrome Storage API to store, update, and retrieve users information

● Designed an algorithm to determine if the child-user should be allowed internet access by checking the current time against a time duration preset by the parent-user FreshCards Live Site Github

An application built with Rails and React.js for users to create, manage, and study flashcards.

● Implemented user authentication functionality by using Ruby BCrypt gem to encrypt user information, and using React component architecture and React Router to secure site navigation.

● Leveraged the React.js virtual DOM and modular React components to ensure fast, smooth, and intuitive app navigation.

● Optimized database searches and eliminated N + 1 queries through the RESTful API by leveraging the power of ActiveRecord associations in Rails.

VSEPR Models Live Site Github

A data illustration application built with JavaScript to provide interactive 3D views of molecules

● Used ChemDoodle Web Component Library to create 3D molecule models on HTML5 canvas element.

● Implemented dynamic DOM manipulations to update the molecule information upon user’s selection.

● Implemented modal window to show instructions on how to interact with the application when the user launch to leverage user experience.

EXPERIENCE

Research Assistant June 2015 - Jan 2018

Henlix, Inc.

● Ensured reliable experiment quality of less than 0.2% contamination on cell culture, resulting in saving time and budgets for the team.

● Recruited and trained 3 new employees in experiment conduction and special instrument implementation within 2 weeks.

● Created data recording templates for 3 types of experiment to maintain unified and clear records EDUCATION

App Academy (Spring 2018)

Immersive software development course with focus on full stack web development University California @ Davis (Spring 2015)

BS - Medicinal Pharmaceutical Chemistry

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