Kris Ellery

Principal SDE and Front-End & Design Systems Expert • Crafting Performant Web Applications

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Career

Multidisciplinary professional with over 15 years of experience in design, development, and implementation of websites and web applications.

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Principal Software Development Engineer at Zillow

Dallas, TX • May 2021 - Present

As the most-visited real estate website in the United States, Zillow offers customers an on-demand experience for selling, buying, renting and financing with transparency and nearly seamless end-to-end service.

As the technical lead on the Design Systems team at Zillow, I spearheaded the development and enhancement of our next-generation internal UI library using React.js, TypeScript, Panda CSS, Floating UI, PNPM, Turborepo, Vitest, Cypress, etc. Additionally, my role was pivotal in advancing Zillow's web performance, specifically targeting and improving Interaction to Next Paint (INP) scores.

Senior JavaScript Engineer at Cofense

Dallas, TX • Sep 2017 - May 2021

Cofense empowers people to recognize phishing attacks and stop them in minutes, not days. Their end-to-end phishing defense solution combines cutting-edge technology with collective human intelligence to protect organizations from inbox to SOC.

As the lead engineer on the PhishMe and ThreatHQ products, I built single-page Jamstack applications with Vue.js and TypeScript. I managed an internal Design System with over 60 handcrafted components, packaged with Rollup.js, and deployed to a private NPM registry in Artifactory. My contributions were pivotal in improving phishing defense solutions.

Senior Interactive Developer at Hawkeye

Charlotte, NC and Dallas, TX • Nov 2013 - Aug 2017

Hawkeye is an advertising agency specializing in extraordinary ideas by leveraging data, creativity, and technology. Owned by Publicis Groupe and Epsilon, Hawkeye delivers top-notch solutions for domestic and international brands.

At Hawkeye, I focused on high-performance, data-driven web development. I led the UI engineering for the Magnolia CXM, an internal suite of business applications built with Ember.js. My work earned WebAwards for Outstanding Achievement in Web Development in 2014 and 2015, reflecting my commitment to delivering top-notch solutions.

Web Designer & Developer at Red Ventures

Fort Mill, SC • Apr 2013 - Nov 2013

Red Ventures is a portfolio of brands and digital platforms that improves every aspect of the consumer journey, helping people make better decisions while unleashing transformative growth for their businesses and partners.

At Red Ventures, I designed and developed several internal R&D products, including Articulate, ShadowBoard, and Tagular. I also created various websites and A/B split tests for Insurance and Energy business clusters. My hackathon project, an interactive map for HBO's Game of Thrones, was featured in a Time article, showcasing my ability to blend creativity with technical expertise.

"Kris continually delivers projects in a timely fashion that meet or exceed set requirements. It is well known that he produce some of the best front-end code within the organization. He is willing and open to using new technologies or developing new techniques for pushing innovation in our projects. Kris uses his knowledge of UI design approaches and techniques to ensure our projects are both beautiful visually, but make logical sense from a user interface and flow perspective."

John Sutton Sr. Vice President for Digital Strategy at Red Ventures

Information Technologist at Michigan State University

East Lansing, MI • May 2009 - Apr 2013

University Advancement supports Michigan State University in terms of money and advocacy by delivering an integrated program of communications, marketing, and engagement.

I designed and developed a range of websites and web applications for MSU's students, donors, and alumni. Utilizing jQuery, ColdFusion, MSSQL, and Authorize.net, I engineered scalable solutions like the Online Giving and Event Registration platforms. My work received recognition at the CASE conference for higher education and was featured in University Business articles, highlighting my impact on the university's digital strategy.

"Kris has made exceptional contributions toward leading our design and UI development on all our public facing websites. I admire his tenacity and "let's get it done" type of attitude."

Randy Brown Director of Web Services at Michigan State University