Ufuk Kayserilioglu
Senior Staff Engineer - Ruby And Rails Infrastructure Team at Shopify
Nicosia, Lefkoşa District, Cyprus
Summary
🤩
Rockstar🎓
Top SchoolUfuk Kayserilioglu is a Senior Staff Engineer leading Ruby and Rails infrastructure at Shopify with over two decades of software engineering and architecture experience. Trained in physics, he blends analytical problem-solving with hands-on full‑stack expertise spanning VoIP protocols, mobile apps, web platforms and cloud SaaS systems. At Shopify he progressed from production engineering to managing and now senior technical leadership of the Ruby infra team, while contributing to high-profile open-source projects such as ruby/ruby, rails/rails and Shopify’s ruby-lsp and tapioca. He’s known for pragmatic API and compiler-level fixes—adding immutability helpers, parser improvements and language-server features—that improve developer workflows at scale. A quick learner and effective project leader, he pairs deep technical contributions with mentoring and cross-team communication. Based in Nicosia, he also serves on the Ruby Central board and has a track record of shipping production telephony and mobile platforms from earlier entrepreneurial work.
13 years of coding experience
20 years of employment as a software developer
High School, High School at Robert CollegeMSc, PhD, Physics, MSc, PhD, Physics at Boğaziçi University
Turkish, English
Github Skills (53)
ls10
customizer10
application-framework10
rubocop10
ruby-rails10
programming-language10
javascript10
sorbet10
custom-theme10
type-check10
abstract-syntax-tree10
highlight10
testing10
app-framework10
command-line-interface10
Programming languages (14)
Github contributions (5)
Shopify/tapioca
May 2019 - Jan 2023
The swiss army knife of RBI generation
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 releases, 734 reviews, 1174 commits in 3 years 8 months
Contributions summary:Ufuk implemented the import of symbol generator classes and tests. The contributions focus on expanding the functionality of the RBI generation tool. The user added tests for generic types, fixed rubocop issues, refactored method parameter sanitization, and started generating nested definitions. The user also made changes related to Active Record for relations and column support in the RBI generation.
swissruby-gemsgem-rbisarmysorbet
paracycle/slackthemes
Mar 2015 - Jan 2021
A Slack sidebar theme browser
Role in this project:Front-end Developer
Front-end DeveloperContributions:1 review, 235 commits, 162 PRs in 5 years 11 months
Contributions summary:Ufuk primarily focused on front-end development and UI enhancements for a Slack theme browser. Their contributions include implementing features for theme selection, generating theme screenshots, and integrating Google Analytics for tracking. The user refactored theme handling with a helper method and updated the UI to reflect the modern Slack interface. They also fixed root path redirects and added color transitions, making the user experience more interactive.
browsersidebar-themesidebarslackbrowser-theme
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