Harris Hancock
Systems Engineer at Cloudflare, Inc.
Lisbon, Portugal
Summary
🤩
Rockstar🎓
Top SchoolHarris Hancock is a systems engineer with 14 years of experience building and stabilizing backend infrastructure, currently based in Lisbon and contributing at Cloudflare since 2017. He specializes in runtime and systems-level work, notably contributing to the Cloudflare Workers JavaScript/Wasm runtime and maintaining core stream and queue implementations to prevent regressions. His open-source contributions to capnproto show deep familiarity with code generation, C++ toolchains, and cross-language compatibility fixes. A former US Army cryptologic linguist with a Korean language diploma, Harris combines disciplined operational thinking with software engineering rigor. He has a BS in Computer Science and a track record of quietly fixing subtle, high-impact issues that keep distributed systems reliable at scale.
14 years of coding experience
5 years of employment as a software developer
Diploma, Korean Language, Diploma, Korean Language at Defense Language InstituteBachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at California State University-East Bay
English, Swedish
Stackoverflow
31reputation
440reached
1answer
0questions
Github Skills (16)
proto10
streams-api10
javascript10
code-generation10
c-language10
webassembly10
cprogramming-language10
runtime-environment10
capnproto10
compiler-optimization9
build-system8
cpp-library8
standard-library8
c-libraries8
cloudflare6
Programming languages (9)
Github contributions (5)
cloudflare/workerd
Oct 2022 - Jan 2023
The JavaScript / Wasm runtime that powers Cloudflare Workers
Role in this project:
Back-end Developer
Back-end DeveloperContributions:265 reviews, 49 commits, 93 PRs in 3 months
Contributions summary:Harris primarily contributed to refactoring and reverting changes related to JavaScript and WebAssembly runtime. They addressed regressions in BYOB reads, refactored JS-backed streams to support multi-consumer tee, and updated and reverted updates to queue implementations and other core stream functionalities. Their work focused on correcting internal commits and maintaining the stability of the underlying runtime environment for Cloudflare Workers.
cloudflarejavascriptpowersruntimeservice-worker
capnproto/capnproto
Mar 2016 - Jan 2023
Cap'n Proto serialization/RPC system - core tools and C++ library
Role in this project:Back-end Developer
Back-end DeveloperContributions:318 reviews, 249 commits, 166 PRs in 6 years 11 months
Contributions summary:Harris's commits primarily focused on code generation and maintenance within the Cap'n Proto project, specifically related to the C++ library and core tools. They regenerated and updated bootstrap files, including those for JSON and schema definitions, to ensure compatibility between the code generator and the library headers. Additionally, they made various improvements, including fixing missing includes, addressing compiler warnings, and refactoring code to improve overall performance.
rpccppprotobufc-libraryproto
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