Wiley Kestner
Senior Staff Software Engineer at Slack
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolWiley Kestner is a Senior Staff Software Engineer with 13 years of experience building and leading iOS teams for enterprises and startups, currently shaping core features of the Slack iOS app. He has shipped 30+ iOS apps since 2009 and led teams of 2–12 engineers to deliver products for retailers, banks, insurers, sports franchises and more. A pragmatic tech lead, Wiley has hands-on expertise in Swift, Objective-C, Python and Bazel, including transitioning a 1.3M-line codebase to Bazel and daily coding at scale. He founded and ran a profitable app studio, taking products from prototype to acquisition, and repeatedly solved memory- and performance-constrained problems such as an infinite-scrolling keyboard extension under ~30MB limits. Based in Paris with a background in Chinese studies and art, he brings cross-cultural communication and product intuition to complex engineering challenges.
13 years of coding experience
15 years of employment as a software developer
Bachelor of Arts, Art, Bachelor of Arts, Art at Yale UniversityChinese, Chinese at Tsinghua University
English, Chinese, French
Stackoverflow
6,343reputation
910kreached
44answers
27questions
iphone
top-5%
django
top-5%
django-templates
top-1%
Github Skills (98)
mixpanel10
nvidia10
alembic10
gateway10
django-templates10
ios-application10
logging10
django9
bdd9
sdk9
ai9
llmops9
azure9
swift9
rust9
Programming languages (10)
Github contributions (5)
wileykestner/beancount-example
Feb 2019 - Dec 2019
Contributions:9 commits, 10 pushes, 1 branch in 11 months
wileykestner/pyqt5-savings-demo
Oct 2016 - Jan 2023
Contributions:3 pushes, 1 branch in 6 years 3 months
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