Daniel Vandersluis
Lead Backend Engineer at Pexels
Old Toronto, Ontario, Canada
Summary
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Rockstar🎓
Top SchoolDaniel Vandersluis is a Lead Backend Engineer with 17 years of software development and architecture experience, currently leading backend efforts at Pexels. He specializes in Ruby on Rails and has a strong track record of shipping robust server-side systems while mentoring teams and driving technical direction. As a core contributor to RuboCop, he brings deep expertise in code quality, static analysis, and test automation—skills he uses to improve developer workflows and maintainability. His career spans leadership roles across startups and product companies, from building talent-management platforms to scaling high-traffic media services. Based in Old Toronto, he is focused on fully remote senior or lead positions and pairs hands-on implementation with pragmatic architectural judgment.
17 years of coding experience
13 years of employment as a software developer
Toronto Metropolitan University
Stackoverflow
92,918reputation
11.3mreached
435answers
58questions
grep
top-5%
postgresql
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regex
top-1%
oop
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sql
top-1%
mysql
top-1%
Github Skills (37)
javascript10
mysql10
testing10
regex10
ruby10
syntax10
php10
integer10
filter10
sql10
conditional-statements10
ruby-on-rails10
timing9
post9
postgresql9
Programming languages (10)
Github contributions (5)
rubocop/rubocop
Jul 2016 - Aug 2022
A Ruby static code analyzer and formatter, based on the community Ruby style guide.
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:526 reviews, 313 commits, 472 PRs in 6 years 1 month
Contributions summary:Daniel primarily contributed to the Ruby static code analyzer and formatter project, focused on implementing new features and improving code quality. Contributions include adding support for new Ruby versions, fixing code style issues, and implementing tests to cover different scenarios, including ones with potential vulnerabilities. The user also worked on the configuration file handling and the auto-generation features, demonstrating a strong understanding of the project's internal workings and testing strategies.
linterstyle-guidecode-formattercode-analyzerruby
dvandersluis/rubocop-performance
Sep 2020 - Mar 2025
An extension of RuboCop focused on code performance checks.
Contributions:25 pushes, 10 branches in 4 years 7 months
focusedperformancechecksrubocop
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