Christopher Johnson
Senior Full-Stack Product Engineer | Previously PayIt, Tlon, Twitch, Metromile
Updated 9 months ago
16+
Years Experience
15
Roles
29
Skills
1
Education
About
With a professional focus on JavaScript architecture and a knack for UX and API design, my recent tenure at PayIt has been dedicated to enhancing digital government services across North America. Our team's work has significantly improved the constituent experience, particularly for pivotal services like DMV and property tax portals. Providing technical leadership and contributing to architectural improvements, I've played a vital role in rebuilding the dashboard experience for multiple municipalities. These efforts not only streamlined processes but also demonstrated my commitment to delivering high-quality, user-centric software solutions, fostering increased accessibility and efficiency within public sector applications.
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Experience (15 roles)
Senior Software Engineer
Developed the core Canvas library, a CRDT algorithm that enables peer-to-peer multiplayer applications Wrote reference implementations, added documentation, and consulted on client consumers of the library, fixing bugs and improving the integration on implementations which used our library.
Software Developer
- Complete software lifecycle management for 50+ applications deployed in various state/local governments across North America, managed by our central application codebase, Centaur - Wrote features, fixed bugs, redesigned architecture, and wrote documentation for Viewbuilder, a no-code configuration...
Senior Software Engineer
- Developed features, fixed bugs, and maintained infrastructure for Simplifyy’s rental property contractor marketplace. Performed a variety of tasks all across the software stack, including database management, analytics, dashboard features, and client-facing bugs and feature additions. - Refactored...
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Education (1)
University of Nebraska-Lincoln
2009 - 2013
Activities and societies: President, Association for Computing Machinery (ACM-UNL) Web administrato for local nonprofit (World Energy Project) Finished 3.5 years at University of Nebraska-Lincoln in the "Raikes" honors program - Honors program with emphasis on computer science, business, and leadership - Cumulative GPA: 3.307 - Did not graduate with a degree - Coursework: - C++/Java object-oriented programming - Data structures, algorithms, discrete logic - Web development with multi-tiered architectures (PHP/MySQL, Java EE)
Skills (29)
Volunteer Experience (2)▼
Webmaster
World Energy Project
Jan 2010 - Jan 2012 · 2 yrs 1 mo
Mentor / Tutor
CurrentCode Tutoring
Jan 2013 - Present · 12 yrs 6 mos
Honors & Awards (1)▼
Won $50,000 Tradeking API Challenge
Issued by Tradeking, Inc.
Associated with University of Nebraska-Lincoln Won the national $50,000 prize for our three-part application that uses Tradeking’s brokerage API. The system we built consisted of: - The first part is a chrome extension that scans a web page for stock symbols. When it finds a stock symbol, it inserts a widget displaying the current stock price and an overlay with a stock graph, some financial information, and the ability to buy the stock right in the browser window. - The second part is a cloud-based notification service that alerts you whenever a stock drops in price, breaks a moving average, or some other event occurs. Notifications are received on the browser extension and on the mobile application. - The third part is an android application that displays notifications and lets the user set notifications on stock movements. - Tools: HTML/CSS/Javascript, Java EE
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