Will Kahn-greene
Senior Staff Engineer at Mozilla Corporation
Chelmsford, Massachusetts, United States
Summary
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Rockstar🎓
Top SchoolWill Kahn-greene is a Senior Staff Engineer with 23 years of experience delivering resilient cloud-native pipelines, observability platforms, and developer-facing infrastructure. He has led critical rewrites and migrations at Mozilla—most notably overhauling the crash ingestion pipeline and a Rust stackwalker that halved processing time—while bootstrapping teams and shaping architecture and rollout processes. A pragmatic polyglot and generalist, he pairs rigorous design and testing with product-minded documentation and change management, driving large cost-savings by consolidating observability tooling and streamlining offboarding workflows. An active open-source maintainer, Will has contributed to high-profile projects like Bleach and MDN tooling and improved developer experience across Mozilla services. He holds an MS in Computer Science from Northeastern with a focus on programming languages and software engineering, and maintains a long-running technical blog and GitHub presence that reflect his emphasis on practical, auditable solutions.
23 years of coding experience
20 years of employment as a software developer
BA, Computer Science, BA, Computer Science at Boston CollegeMasters, Computer Science, Masters, Computer Science at Northeastern University
python, javascript
Stackoverflow
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Github Skills (39)
docker10
python10
apidoc10
api-design10
sphinx10
django10
amazon-elasticsearch10
openid-connect10
testing10
bash10
makefile10
dockers10
elasticsearchquery10
api10
aws-elasticsearch10
Programming languages (19)
Github contributions (5)
mozilla/bleach
Oct 2015 - Jan 2023
Bleach is an allowed-list-based HTML sanitizing library that escapes or strips markup and attributes
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:74 reviews, 409 commits, 317 PRs in 7 years 4 months
Contributions summary:Will primarily focused on updating and maintaining the documentation for the bleach library. They updated links, added sections for bug reporting and security disclosures, and restructured the documentation. They also made improvements to the CSS sanitization process and implemented changes to support the 2.x and 3.x releases.
stripsallowedescapesmarkupbleach
mozilla/kitsune
Sep 2011 - Aug 2022
Platform for Mozilla Support
Role in this project:Back-end Developer
Back-end DeveloperContributions:575 commits, 59 PRs, 13 pushes in 11 years 1 month
Contributions summary:Will primarily contributed to the backend of the Mozilla Kitsune project by implementing features related to the search functionality, including improvements to the search suggestions API and the handling of Elasticsearch-related errors. They also reworked the code for reindexing and the underlying data structures for the search to improve the relevancy of the results by adding boosts and a mechanism to reconcile records. Further, the user worked on improving documentation, addressing issues to improve quality by converting and converting old code base.
mozilla
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