William Cekan
Tech Yahoo, Software Developer Engineer, Senior
Ocala, Florida, United States
Summary
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RockstarWilliam Cekan is a senior software architect and engineer with over 20 years of experience designing, building, and supporting large web-based commercial products, currently driving backend development at Yahoo. He blends hands-on architecture, coding, and debugging expertise across Java, C/C++, JavaScript and enterprise platforms with a proven track record of adopting Agile practices to reduce costs and shorten delivery cycles. Comfortable both as a trusted technical advisor to partners and as a manager of distributed engineering teams, he has deep experience in enterprise standards (FIPS, CAC, SSL) and performance-sensitive systems like APM and site access controls. An active open-source contributor, he improved code quality and HQL performance in Yahoo's widely used Elide framework, enhancing maintainability and read-only transaction support. Based in Ocala, Florida, he pairs practical implementation skills with long-term product stewardship and a knack for translating complex requirements into reliable, auditable solutions.
10 years of coding experience
24 years of employment as a software developer
Github Skills (7)
javas10
hibernate10
api10
sql10
back-end-development10
software-quality10
java10
Programming languages (4)
Github contributions (5)
yahoo/elide
Oct 2015 - Jan 2022
Elide is a Java library that lets you stand up a GraphQL/JSON-API web service with minimal effort.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:80 reviews, 311 commits, 252 PRs in 6 years 4 months
Contributions summary:William primarily focused on improving the code quality and maintainability of the Elide framework, by making changes to comply with check style standards. They refactored the EntityDictionary and made the HQL queries to be more performant. Furthermore, the user has supported read-only transaction and improved the error logging.
standmobileweb-servicejson-apiorm
wcekan/fili
Apr 2017 - Aug 2020
Easily make RESTful web services for time series reporting with Big Data analytics engines like Druid and Hive.
Contributions:37 pushes, 21 branches in 3 years 4 months
data-analyticsanalyticsreportingrestfulbig-data
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