Darshan Sen

Contacts

• Email - [email protected]
• GitHub -
• LinkedIn -

Experience

Holepunch

Engineer, June 2025 - Present

• Led development of the Keet Broadcast Call engine, leveraging JS and C++ to seamlessly integrate FFmpeg into Electron atop our peer-to-peer stack.
• Developed a WebRTC benchmark to test scalability, simulating many-to-many video conferencing on Electron over a virtual network topology .
• Built org-wide build and packaging infrastructure, creating a GitHub Actions pipeline with code signing support and implementing supporting changes across MSIX, DMG, Snap, AppImage and Flatpak to modernize cross-platform app deployment on Windows, macOS, and Linux.
• Enhanced GNOME privacy by prototyping a native C solution in the Mutter Wayland display server to hide app windows from screenshots .

Cursor

Engineer, January 2025 - October 2025

• Delivered key solutions across Node.js and Electron for Cursor, the AI code editor. For example, tracking Node.js HTTP/2 calls through the Network tab of Chrome DevTools

Postman

Technical Lead, June 2021 - August 2025

• As a Technical Lead, I have driven initiatives, chaired team meetings, onboarded 8 engineers on all our projects, been the key reviewer of all the work that my team has done and provided 1:1 mentorship to all of my teammates
• As a prolific Open Source contributor belonging to the Governance of megaprojects like Node.js and Electron, I gave several talks to the entire engineering team of Postman like and was able to mentor my colleagues to successfully make valuable contributions to Electron () and Node.js ()
• Conducted a novel experiment on using V8 snapshots to speed up the require()s in the Electron main process by 80%
• Redefined how my team approaches performance problems by creating , a JavaScript module which enables the visualization of performance bottlenecks in any JavaScript application
• Top contributor to an R&D C++ and JavaScript framework for creating cross-platform native desktop, mobile and CLI apps, where I authored key parts of the framework, like JavaScript support (V8 on Windows and JavaScriptCore on Apple and Linux), event loop, networking capabilities and owned the development of the entire framework on Windows using Win32 APIs
• Laid the groundwork for hooking in additional native C++ modules into our custom build of Electron which makes use of the internal features of Chromium. For example, one such module I wrote enables the Postman Enterprise app to use the registry on Windows, Mac OS X user defaults on macOS and snap configuration options on Linux for reading key-value pairs that have been set by an Admin in an Enterprise deployment environment.
• Led a team of 4 engineers to develop a C++ library with an accompanying Node.js addon to send HTTP, HTTP/2, HTTP/3 (QUIC protocol) and WebSocket requests using a fully relocatable build of libcurl -
• Created a C++ HTTP client that uses WinHTTP on Windows, NSURLSession on Apple and libsoup on GNOME -

Node.js

TSC Member, Core Collaborator, Triager, October 2020 - Present

• Nominated by the project community to serve as a TSC Member, Core Collaborator and Triager for my quality code contributions and valuable code reviews
• Won the "Outstanding Contribution from a New Arrival" award as part of the JavaScriptLandia Awards at 2022's OpenJS World -
• 36th highest contributor of C++ and JavaScript features, bug fixes and performance improvements across all subsystems of Node.js
• Primarily known for being the lead of the "Single executable applications" Strategic Initiative, which I have initially implemented in
• Provided 1:1 mentorship to numerous contributors and onboarded 6 collaborators
• Contributed to other high-profile C++ and C projects like V8, libuv and OpenSSL for the betterment of Node.js

Electron

Governance Member, July 2022 - May 2024

• Nominated by the project community to serve as a Governance Member for my quality code contributions and valuable code reviews
• 54th highest contributor of C++ and Objective-C++ fixes for various kinds of GUI bugs and crashes
• Contributed a 60% performance improvement for a complex and long-standing Intel macOS performance problem that was affecting the startup performance of Google Chrome and all Electron-based apps in the world by profiling the C++ application startup code using Perfetto API calls and ultimately came up with the fix in
• Used LLDB and GDB to debug complicated C++ crashes in Electron and Chromium by attaching the debugging symbols to the release builds of Electron, like in and posted a blog about my journey in to motivate my team to tackle similar issues
• Worked with the Chromium C++ thread pool to create async and non-blocking functionalities -
• Collaborated with the Chromium team to fix difficult GN bugs in the Electron build system
• Contributed to other high-profile C++ projects like Chromium, Crashpad and Perfetto for the betterment of Electron

Deno

Contributor, August 2022 - September 2022

• Once, I decided to challenge myself to land a valuable contribution in Deno, despite my inexperience in Rust, so I attempted solving a serde_v8 bug - while teaching myself Rust and I ended up landing the key improvement in Rusty V8 - , bringing the change into Deno in the rusty_v8 upgrade - and finally fixing the issue in

Talks

• Contributing to Node.js - Postman, August 2021 -

Education

West Bengal University of Technology, 2017 - 2021

Bachelor of Technology in Computer Science & Engineering

DGPA - 9.28 / 10

Skills

C++, C, Node.js, Electron, JavaScript, TypeScript, Objective-C, Python, Rust, Bash, Git

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