Simon Perepelitsa is a Lead Software Engineer based in Reading with 15 years of experience building and maintaining production web applications, primarily in the Ruby/Rails ecosystem. At HalalBooking he leads engineering efforts while remaining hands-on in both back-end and full-stack work, with a track record of improving libraries and CMS platforms. His open-source contributions show practical expertise in nested set handling, WHOIS parsing, and refining a Rails CMS—demonstrating attention to robust data handling, testing, and localization. He combines senior technical leadership with a habit of shipping incremental refactors and tests that reduce technical debt and improve long-term maintainability. An understated strength is his ability to bridge core library internals and application-level UX, making complex backend improvements benefit end users.
An extendable Ruby on Rails CMS that supports Rails 6.0+
Role in this project:
Full-stack Developer
Contributions:76 commits in 5 months
Contributions summary:Simon primarily contributed to the Ruby on Rails-based CMS, refinerycms. Their work included fixing bugs and updating dependencies, specifically related to jQuery and Rails. They also refactored and improved the user interface, focusing on locale handling, and updated the code to use standard Rails practices. Furthermore, the user addressed issues related to model errors and translated the user interface to other languages.
An intelligent — pure Ruby — WHOIS client and parser.
Role in this project:
Back-end Developer
Contributions:28 commits in 1 year 1 month
Contributions summary:Simon primarily contributed to the project by enhancing the whois client and parser functionality. This involved adding support for new properties, such as the registrar and admin contact, for various domain registries like whois.ripn.net and whois.registry.in. Furthermore, the user refactored existing code, including the `contacts` method and `==` method, and addressed issues related to nameserver parsing and data handling. These modifications improved the accuracy and completeness of the whois data retrieval.
pure-rubywhois-clientrubywhoisparser
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Simon Perepelitsa - Lead Software Engineer at HalalBooking