William Keller
Senior Software Engineer at PrizePicks
Kansas City, Missouri, United States
Summary
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SeniorWilliam Keller is a senior software engineer with decades-long hands-on experience and a recent focus on scalable web and payment systems, currently at PrizePicks. He has repeatedly modernized legacy platforms into real-time services—from cutting credential issuance from hours to seconds at NCCER to building malware detection pipelines handling millions of events at Trusted Knight. Comfortable across the full stack, William ships production systems in Ruby on Rails, Node.js, Java/C#, C/C++, and Objective-C, and has deep experience designing APIs, databases, and AWS deployment pipelines. He brings engineering rigor—TDD, CI/CD, and release metrics—that has consistently reduced cycle times and defects. Beyond technical delivery, he pairs strong communication and cross-team leadership with domain experience in payments, event operations, and analytics. Based in Kansas City, he balances legacy-platform fluency with a clear track record of modernizing systems for scale and reliability.
11 years of coding experience
34 years of employment as a software developer
Stackoverflow
5,292reputation
1.2mreached
53answers
1question
ftp
top-1%
naming-conventions
top-5%
python
top-5%
portability
top-1%
html
top-5%
Github Skills (36)
ftp10
portability10
python9
filename9
naming-conventions9
html9
flash6
php6
character-sheet6
windows6
batchfile6
ruby6
flv6
user-interface6
javascript6
Programming languages (6)
Github contributions (5)
williamkeller/dot-files
Mar 2016 - Feb 2025
Contributions:61 pushes in 9 years
williamkeller/eclipsephase
May 2021 - Aug 2022
The second edition character sheet for FoundryVTT
Contributions:15 pushes, 1 branch in 1 year 2 months
sheetfoundryvttsecondcharactercharacter-sheet
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