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<h2>Zhaokai Xu</h2>
<h3>Undergraduate at UC San Diego</h3>
<h3>Backend engineer for product</h3>
</div>
<ul class="network-icon" aria-hidden="true">
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<p class="course">BS in Computer Science, 2017 - 2019</p>
<p class="institution">University of California, San Diego</p>
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<div class="description">
<p class="course">MS in Computer Science, 2019 - 2020</p>
<p class="institution">University of California, San Diego</p>
</div>
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<div class="w3-container intro" style="margin-top:20px;">
<p> Hi!
I’m ZHAOKAI, a 1st year M.S. student majoring in Computer Science at UC San Diego.
I am now actively seeking 2020 opportunities in software development.
My past internship experience at Uber infra team has a primary focus on developing an
Automation testing framework on Jenkins. I implemented failure tests to test the system
availablility. The project is an open soruce project called on Github:
https://github.com/uber/peloton
My past internship experience at Tencent Wechat team mainly focus on developing a frontend
syntax highligting feature for the Business Wechat. It enabled highlighting code while
sharing on the platform.
</p>
<p> I am a highly motivated individual and always eager to learn new technologies and
make real-world impacts with my computer science skills.
From my previous internships, I have a strong background in backend development.
Although most of my experience is related to backend development, I am eager to explore other fields,
such as cloud computing and mobile development.
I am also a fast learner, able to become familiar with new frameworks and existing
codebase in a short amount of time at the beginning of my internships.
</p>
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<h3>Python</h3>
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<h3>Amazon Web Services</h3>
</div>
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<h3>Android</h3>
</div>
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<h1>Experience</h1>
<p>Industry</p>
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</div>
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<div class="card-body">
<h4 class="card-title exp-title text-muted mt-0 mb-1">Software Engineer Internship
</h4>
<h4 class="card-title exp-company text-muted my-0"><a href="https://whova.com/"
target="_blank" rel="noopener">Uber, Inc</a></h4>
<div class="text-muted exp-meta">
Jun 2019 – Sep 2019
<span class="middot-divider"></span>
<span>Palo Alto, California</span>
</div>
<div class="card-text" style="padding-top: 5%">
<p>Contributed to improving the system reliability for Uber open source project “Peloton” (a unified resource scheduler for cluster workloads).
</p>
<ul>
<li> • Designed and implemented 30+ failure tests for testing the recoverability of the distributed system, applied PyTest framework to delete jobs and
resource pools, managed Peloton components with the “leader/follower” pattern, and coordinated with Apache Zookeeper, Mesos, and Cassandra.
</li>
<li>• Created a Jenkins CI pipeline to enable Jenkins integration for failure tests using Groovy, orchestrated the integration tests and the failure tests.
</li>
<li>• Designed Peloton upgrade tests to test the backward compatibility, built the mini-cluster from old image with some jobs, managed Docker to
upgrade the Peloton components with new images, queried old jobs in Cassandra and applied the sanity test to identify the success of upgrading
</li>
</ul>
</div>
</div>
</div>
</div>
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<div class="card-body">
<h4 class="card-title exp-title text-muted mt-0 mb-1">Software Engineer Internship
</h4>
<h4 class="card-title exp-company text-muted my-0">
<a href="http://www.evt.ai/" target="_blank" rel="noopener">Tencent, Wechat</a>
</h4>
<div class="text-muted exp-meta">
Jul 2018 – Sep 2018
<span class="middot-divider"></span>
<span>Guangzhou, China</span>
</div>
<div class="card-text" style="padding-top: 5%">
<p>In this internship, I contributed to:</p>
<ul>
<li>• Developed syntax highlighting for code snippets to allow users easily share code in Business WeChat on Windows platform.</li>
<li>• Applied highlight.js to reformat the code snippet from C++ application by passing it into a sandboxed JavaScript runtime via V8 API. </li>
<li>• Extracted DOM objects from HTML-format code snippets using Gumbo Parser, added styling attributes to text nodes to be highlighted. </li>
<li> • Rendered formatted string in Business WeChat application using DirectUI Lib after receiving data from the protocol buffer.</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
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style="position: relative; height: 369.562px;">
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style="position: absolute; left: 0px; top: 0px;">
<div class="card">
<a href="https://github.com/JACKIEZHAOKAI/Mini_Dropbox_file_storage_system"
class="card-image hover-overlay">
<img src="./static/mini-dropbox.png" alt="" class="img-responsive">
</a>
<div class="card-text">
<h4><a href="https://github.com/JACKIEZHAOKAI/Mini_Dropbox_file_storage_system">
Mini DropBox Distributed File Storage (Backend, Linux, C++)</a></h4>
<div class="article-style">
<p>C++ implementation of dropbox-like file storage system</p>
</div>
</div>
</div>
</div>
<div class="project-card project-item isotope-item js-id-ML js-id-Web"
style="position: absolute; left: 0px; top: 0px;">
<div class="card">
<div class="card-text">
<h4><a href="https://github.com/JACKIEZHAOKAI/Amazon_Rec_System_python">
Amazon Clothes Recommendation System (Machine Learning, Python)</a></h4>
<div class="article-style">
<p>Python implementation of an Amazon Clothes Recommendation System</p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</section>
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