Jonnie Spratley is a software engineer with 13 years of experience building design systems and component libraries that scale to millions of users. Based in Sacramento, he combines front-end craftsmanship (React, sleek UIs) with full-stack work across Node-based backends, having led dashboard and API efforts that improved availability above 99.5%. At Cisco he helped create a React component/design system and contributed meeting-focused features and device-logging improvements to the high-profile Webex JS SDK. He’s a hands-on mentor and former instructor/author who has coached engineers, developed curricula, and driven team productivity and technical debt reduction. Outside core work he tinkers with home automation and automotive tech—bringing curiosity-driven side projects into pragmatic product improvements. Practical, user-focused, and experienced at shipping reliable UI libraries and integrations for large-scale collaboration platforms.
13 years of coding experience
12 years of employment as a software developer
None Computer Science, None Computer Science at Sierra College
Contributions:41 reviews, 18 commits, 48 PRs in 7 months
Contributions summary:Jonnie contributed to the Webex JavaScript SDK, focusing on features related to meetings. Their work included adding logging for audio and video device settings and implementing changes to handle device settings logging within the meeting lifecycle. They also made improvements to the core webex package, enhancing the user agent header and adding FedRAMP configuration for services. Further contributions were made to testing workflows, adding new specs and adjusting existing tests.
Contributions:385 commits, 18 pushes, 1 branch in 5 years 4 months
cmslight-weightlightangular-jsyeoman
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