Daniel Imms
Principal Software Engineer at Cursor
Bothell, Washington, United States
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Daniel Imms is a Principal Software Engineer with 13 years of experience building high-performance developer tools and developer-facing features, currently based in Bothell, WA. He’s a long-running maintainer of xterm.js—a web terminal library with tens of millions of users—and has led terminal work inside Visual Studio Code, including a WebGL-based renderer and performance optimizations that pushed the integrated terminal toward near-native throughput. His work spans front-end rendering, back-end pty integrations, and developer tooling, with notable contributions to vscode, node-pty, and vscode-jupyter. Comfortable across C++, TypeScript, Electron and cloud services, he combines deep systems knowledge with a knack for pragmatic refactors and UX-driven fixes. A self-taught programmer since age 10, he also quietly mentors distributed teams and contributes widely to open source, making much of his engineering visible on GitHub.
13 years of coding experience
16 years of employment as a software developer
Australian National UniversityDiploma of Information Technology, Software Development, Diploma of Information Technology, Software Development at Canberra Institute of Technology
English, Korean
Stackoverflow
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726answers
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Github Skills (86)
autocomplete10
render10
webgpu10
gpu10
emulation10
javascript10
jquery10
rendering10
uid10
front-end-development10
performance-optimization10
html10
code-editor10
typescripts10
cli10
Programming languages (27)
Github contributions (5)
microsoft/node-pty
May 2016 - Dec 2022
Fork pseudoterminals in Node.JS
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 releases, 67 reviews, 610 commits in 6 years 8 months
Contributions summary:Daniel primarily focused on updating and maintaining the `winpty` dependency within the `microsoft/node-pty` repository. Their contributions involved applying patches, upgrading the `winpty` version to 0.3.1 and then to 0.4.1, and addressing errors related to storage and process startup. The code changes included modifications to the `winpty` source code, indicating a focus on low-level interaction and terminal emulation. They also adapted code to use custom API's.
execvt100openptyconptynode-js
xtermjs/xterm.js
Jun 2016 - Jan 2023
A terminal for the web
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:65 releases, 861 reviews, 5328 commits in 6 years 8 months
Contributions summary:Daniel made several significant contributions to the xterm.js project, primarily involving the implementation and refinement of the webgl renderer. Their work included hooking up attributes to a new texture atlas, adding testing capabilities for SGR attributes, and fixing the behavior of combining characters and selecting the background color. The commits suggest the user has worked on the rendering components, particularly addressing details like character rendering, selection styling and optimization.
clixterm-jsvt100browserterminal-emulators
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