Henry Wu
Senior Software Engineer
Taipei, Taiwan
Hello, there! I am Henry Wu, a JavaScript / Ruby on Rails engineer.
- Specialized in JavaScript (ECMAScript 6) and Ruby
- Focus on web back-end and infrastructure management
Work Experiences
Software Engineer • CakeResume
March, 2020 - Present
- cakeresume.com
- Back-end built with Ruby on Rails
- Front-end built with self-developed server-side render engine
- Back-end
- Allowed business user to add FAQ and tech stack to improve transparency to candidates
- Fixed incorrect IP address forwarded by server-side rendering service
- Allowed business user to manage job applications as pipeline and manage their states
- Upgraded Ruby on Rails from 4.x to 5.x
- Allowed business user to invite user to apply certain job
- Allowed business user to accept or reject job application in one click to simplify and accelerate hiring process
- Built resume insights dashboard for user to track and interact with viewers
- Implemented API for new editor, which was launched in September, 2020
- Built recommendation letter system for user to recommend each other
- Integrated Algolia Recommend for general recommendation
- Allowed business user to buy seats for others and manage cost in a more flexible way
- Job-seeking app iOS / Android
- Built with Flutter 2, BLoC, Firebase Analytics, and Mixpanel
- User can search, save, and apply for jobs
- Performed semi-continuous delivery with Fastlane
- 2,500 users active in March, 2021
Tech Lead • Hahow
May, 2019 - February 2020
- Hired several engineers for 2C and 2B department
- Hired 1 front-end (React) engineer and 1 back-end (Node.js) engineer for 2C department
- Hired 1 Ruby on Rails engineer for 2B department
- Held technical sharing, topics including DevOps, front-end, back-end, and info. security
- Service Management: From rc.local to systemd
- Pika & ESM
- Review on Flutter after first-try
- What do they means? Explain nouns in software engineering
- e.g. What's the difference between Java and JavaScript
- e.g. How to discriminate back-end and front-end
2B Backend Enginner • Hahow
May 2019 - February 2020
- business.hahow.in, launched in 2019
- Platform for business user to held internal training with courses produced by Hahow
- Back-end is built with Ruby on Rails and deploy on Heroku
- Managed infrastructure on Amazon Web Service with Terraform and CircleCI
Backend Engineer • Hahow
January 2017 - May 2019
- hahow.in
- As back-end engineer
- Maintained and implement new features with Express, Mongoose, and MongoDB
- Deployed to production with Docker, Google Container Registry, and self-developed Slack bot
- Made code-base and business logic more robust with API and unit testing
- Unified naming convention and coding style with ESLint
- Upgraded Node.js runtime from 0.10.x to 6.x
- Designed and built video playback system on Wistia as fallback of Vimeo for certain regions
- Introduced Imgix as content delivery network for images to reduce bandwidth cost
- As server maintenance engineer
- Manually maintained infrastructure on Google Cloud Platform
- Automated testing environment provisioning on Google Compute Engine with Ansible
- Replaced out-dated continuous integration platform built on Jenkins with CircleCI
- Introduced Heroku-like platform Dokku for internal testing and product prototyping
- Introduced Probot to automate code review and notifications on GitHub
- Maintained Kubernetes cluster built on Google Kubernetes Engine for self-developed user tracking system like Google Analytics
- Built a Slack bot with hubot to manually initiate deployment to production, which connects GitHub, CircleCI, Google Container Registry, and Docker engine on Google Compute Engine
- As mobile engineer
- Built a lightweight, cross-platform mobile app with Expo, a framework built on React Native for user to watch video of online courses
- Successfully published on Google Play store
- Interdepartmental support
- Maintained a Slack bot built with hubot for colleagues to manipulate mailing list and perform data researching
- Maintained a business intelligence system built on Metabase and write re-usable and composable SQL statements
Engineer • Sudo, Inc
June 2016 - November 2016
- sudo.com.tw (Domain name has expired)
- Back-end and front-end built with Ruby on Rails and React
- Deployed to production with Capistrano
- Maintained infrastructure on Amazon Web Services with Terraform
- Built re-usable Amazon Machine Image with Chef
- Built cross-platform mobile app with React Native and Redux
- Bridged native layer with Objective-C
- Deployed to Testflight for beta-testing with Fastlane
Skills
Back-end
PHP / Drupal / Wordpress / Ruby on Rails / Node.js
- Built websites with Drupal 7 or Wordpress 4 and then build web applications with Ruby on Rails as a freelancer during university
- Used Ruby on Rails in Sudo and CakeResume
- Used Node.js in Hahow
DevOps
Linux / Hashicorp / Ansible / Chef / Amazon Web Services / Google Cloud Platform / Heroku
- LPIC 101 acquired, expired in 2018
- Deployed websites and web applications to Linode or DigitalOcean as a freelancer during university
- Learned Docker and manage infrastructure on AWS with Chef and Terraform in Sudo
- Delivered web applications to Google Cloud Platform with Docker and Ansible in Hahow
- Delivered products to Heroku in CakeResume
Front-end / Mobile
jQuery / React / Redux / React Native / Flutter
- Used jQuery as a freelancer during university
- Used React and React Native in Sudo
- Used React and Expo in Hahow
- Used React and Flutter in CakeResume
開發工具
Linux / Bash / vim / Visual Studio Code / JetBrains / Git
- Specialized in POSIX, shell programming and vim
- Used Visual Studio Code for minor modification, lightweight development, and prototyping
- Used JetBrains IDEs for regular development
- Performed version control with Git and collaborated with GItHub and BitBucket
Other programming languages
Python / Go / Rust
- Implemented a tiny service which synchronizes MongoDB and PostgreSQL periodically with Python in Hahow, so colleagues can analyze data with SQL on business intelligence platform
- Implemented a tiny Slack bot to deliver web applications to production in Go
- Learned Rust and used it on side-projects
SaaS / PaaS
Linode / DigitalOcean / Cloudflare / Algolia / Cloudinary / Mailchimp / Mailgun / New Relic / ECPay / TapPay / Papertrail / Rollbar / Sentry
- Deployed Drupal and Wordpress websites on Linode or DigitalOcean as a freelancer during university
- Configured domain names and DDoS prevention and read analysis on Cloudflare in CakeResume
- Integrated Aloglia with Node.js or Ruby on Rails for end-user to search in Hahow and CakeResume
- Configured and deliver e-mails with Mailchimp in Hahow, with Mailgun in CakeResume
- Monitored and improved performance with New Relic in CakeResume
- Integrated ECPay for payments in Hahow and TapPay in CakeResume
- Tracked and analyzed errors with Papertrail, Rollbar, and Sentry in Sudo, Hahow, and CakeResume
Live Projects
Educations
National Cheng-Chi University
Management Information Systems
2012 - 2016
