Résumé

• Name: Jerry Guo
• Email: jgus2012@gmail.com
• Phone: (408)838-8779
• Website: https://naifen.github.io/

Skills & abilities

• 6+ years of experience with Ruby, Rails, and Javascript.
• Years of hands-on experience with Javascript frameworks, libraries & technologies: React, Angular, jQuery, Node.js, Typescript, Webpack, Babel, Redux, D3.js and more.
• Experienced with Ruby, Rails’ MVC pattern, CoC. Practical experience with Meta Programming and Rails configurations, features beyond the basics: service objects, concerns, serialization, advanced Active Record associations, queries, ActiveSupport Notifications, Instrumentation, security, authentication, authorization, etc. Experience with Ruby libraries besides Rails: Sinatra, Roda, etc.
• Practical experience of developing software using both OOP and Functional Programming paradigms and principles. Solid knowledge of common algorithms and data structures.
• Understand the fundamentals of HTTP. Consume and develop REST APIs, GraphQL services frontend and backend.
• Understand the core SQL concepts, principles, best practices and efficient in SQL queries, operations. Experienced in using ORMs e.g. ActiveRecord, Sequel inside and outside Rails.
• Write clean, DRY, scalable, understandable and well-documented code. Write tests and develop software in TDD, BDD approaches for both Ruby projects using Rspec, Minitest and Javascript projects using Mocha, Chai, ESlint, etc.
• Being able understand and discuss program implementations, technologies choices with teammates using agile software development paradigms. Implement UX/UI designers’ designs.
• Understand the core concepts of Git. Fluent in Git operations and team-based workflow: branching, pull/merge request, etc.
• Productive with development tools like Vim, VS Code, etc.
• Having a passion for software development and a willingness to learn, experiment with the latest technologies.
• Team player, good communication skill, critical thinking, and problem-solving abilities. Self-driven and motivated.

Below is a chart to demonstrate my core skills and strengths.

Education

University California, San Diego. Bachelor of Science.

While my Major is all about Calculus and mathematics modeling, I also took computer science courses and earned units points in UCSD. I learned Java and Javascript there, then I self-taught Ruby and Rails and became a full-stack web developer.

Working Experience

Full stack developer at Channel Distrubition, INC. Jan 2013- July 2015

• Developed and maintained an oral care products E-commerce website built with Ruby on Rails. Performed major and minor Rails version upgrades.
• Extensive experience with using and customizing Spree, a Rails E-commerce gem, override business logic and data models for the company’s need.
• Created the store frontend with jQuery and Bootstrap. Implemented features for other employees to easily modify part of frontend from the administration panel dynamically, eg, promotions, on-sale items, daily deals, and the discount amount, etc.
• Implemented recurring payments with products subscriptions, and consumer products replacement reminder features, which generated 5% - 10% more monthly sales.
• Implemented Google product feeds automation workflow. Wrote programs to generate products feed in Google shopping’s required format and upload to Google, ensure products can be displayed in Google shopping search results.
• Implemented a system to connect warehouse computers to E-commerce app backend, retrieve the shipping information through USPS shipping software, updated company’s E-commerce app database and sent customers shipment notification emails with rake tasks and cron jobs. This automation system saved other employee’s labor, time, errors and headache, improved their happiness and customer satisfaction.

Online education startup Sep 2015-Nov 2017

• Built an online AP course tutoring service Rails app for Chinese high school students who are planning to apply for U.S. universities.
• Developed the website with teammates. Review code, discuss program implementations and technology choices on a daily basis.
• Built frontend using Angular initially and later rebuilt in React and ES6. Ensure code quality with ES-lint and TDD.
• Gained extensive experience and knowledge of OOP and Functional programming by practice both paradigms during development.
• Worked with Redis, Nginx, and WebSockets, etc in the production environment and deployed the app to AWS with EC2, RDS, S3, and CloudFront.
• Revised Java programming and tutored Java and Math AP class.

Bath & Kitchen products E-commerce project Dec 2017-Aug 2018

• Built E-commerce project for an Australia based bath and kitchen products company using Ruby on Rails and Solidus E-commerce gem. Built store frontend with React in Rails app.
• Modularize app by implementing features, functionalities as gems, such as customer messagings on orders, and products reviews with pictures for better SEO and conversion rate.
• Utilized Docker in development and production environment. Integrated CI tools and workflow with the Rails app.
• Gained E-commerce knowledges, experience, best practices for real-world business on both the dedicated store and Amazon.

IoT project developer at ANP JL, INC Oct 2018-June 2019

• Worked on a sports lighting IoT project for a U.S. sports lighting contractor client which requires lighting fixtures IoT features.
• Designed the infrastructure of the demo with my partner who studied and worked at Columbia University EE lab. Implemented a Node.js UDP server which connects to hardware made by my partner.
• Worked with designers developing the Web user interface using React and Mobile user interface using React-Native.
• Showcase demo to our client by visiting their offices multiple times. Here’s a link to the demo videos and brief introduction diagram. Demo
• Coordinated with the client and the Chinese LED lighting manufacturer to make samples and send to the U.S. for testing.

Work authorization

Legally eligible to work in the United States. NO employment sponsorship needed.