Haohan Yang

Software Engineer

• Designed and implemented a JavaScript analytics library to collect ad auction related data on publisher pages.
• Built a JavaScript tag library to show ads in Twitter's timeline widget when it is in view.
• Built an internal web service to onboard header bidding customers using Node Express.
• Built a npm module to retrieve GDPR consent signal for all ad requests.
• Implemented a universal user sync endpoint to simplify cookie sync with partners.
• Integrated prebid server with OpenX system. Customers can easily switch OpenX on/off with no config changes.
• Worked across multiple distributed components to implement various auction mechanics.
• Implemented continuous integration for multiple components using GoCD/Jenkins.

Web Developer

• Developed a responsive Bootstrap template and applied it to all project pages. (e.g. usc-isi-i2.github.io/dig)
• Created a widget to generate word cloud from papers on the fly using D3.js.

Software Engineer Intern

• Built a chrome extension to manage files in VMware Horizon Workspace.

Word Definition

Display definition in a popup tooltip for any selected word on a web page. https://chrome.google.com/webstore/detail/word-definition/jhklfnhipgicandonpkkcpdofchbpjjk

Information Retrieval from Big Data

Build a system to process 40GB of crawled job postings and retrieve relevant information in real time for each user search.

• Implemented simhash algorithm to remove duplicates and near-duplicates in job postings.
• Crafted a ranking method for job postings and indexed them into Solr.
• Created a web interface to query Solr and show the results.

PHP eCommerce Website

Build an eCommerce website with an employee side to manage products and a customer side to sell products.

• Designed tables in MySQL with phpMyAdmin.
• Implemented role-based access control on employee side.
• Implemented shopping cart and product list pagination on customer side.