Brian Terlson
Principal Architect at Microsoft
Redmond, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolBrian Terlson is a Principal Architect at Microsoft with 18 years of experience designing and shipping developer-facing cloud and language tools, currently driving the Azure SDK for TypeScript and JavaScript. He blends deep language and platform expertise—contributing to TypeSpec, the ECMAScript spec, async/await proposal work, and the Test262 suite—with practical engineering leadership on build systems and browser compatibility. Known for improving language tooling and spec clarity, he has made substantive edits from parser and scanner internals to test normalization and spec wording. Based in Redmond, he pairs a Computer Science degree from the University of Minnesota with a habit of polishing hard-to-see details that materially raise developer experience.
18 years of coding experience
9 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at University of Minnesota
Github Skills (28)
compatible10
javascript10
parser10
azure-sdk10
testing10
typescript10
microsoft-azure10
microsoft-edge10
compatibility10
compiler-design10
language-design10
rollupjs10
typescript-types10
html10
async-await10
Programming languages (21)
Github contributions (5)
tc39/proposal-async-await
Apr 2015 - Oct 2016
Async/await for ECMAScript
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:138 commits, 17 PRs, 119 pushes in 1 year 6 months
Contributions summary:Brian's primary contributions revolve around the development of the `Async Functions` proposal. They focused on defining the syntax and static semantics for async functions, methods, and arrow functions within the ECMAScript specification. This involved modifying existing productions, adding new productions, and implementing static semantics rules, as evidenced by their code changes. The user also worked on runtime semantics, including the implementation of `AsyncFunctionStart` and handling evaluation of concise bodies, along with fixes, adjustments and refinements.
asyncecmascript
tc39/ecma262
Apr 2014 - Feb 2019
Status, process, and documents for ECMA-262
Role in this project:Technical Writer
Technical WriterContributions:10 releases, 239 commits, 599 PRs in 4 years 11 months
Contributions summary:Brian's commits primarily involve modifications to the ECMAScript specification document, `spec.html`. These changes include fixing typos, clarifying wording, adding cross-references, and improving the overall formatting and presentation of the specification. The edits also involve refactoring the algorithm conventions and removing obsolete material, focusing on accuracy and clarity of the documentation. The commits demonstrate a dedication to maintaining and enhancing the specification's readability and completeness.
ecmaecmascriptjavascript
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