Worked on the ruby/ruby repository to deliver a targeted feature enhancing memory management within the StringScanner component of the strscan extension. The project involved implementing a write barrier in C to ensure that references from StringScanner to other objects, such as strings and regexes, are properly protected during garbage collection. This approach reduced GC overhead and improved memory stability for workloads that heavily utilize string and regex operations. The work demonstrated a strong grasp of Ruby internals, memory management, and C programming, and was integrated through a pull request workflow, reflecting a collaborative and detail-oriented approach to open source development.