Cassandra Beckley
Senior Software Engineer at DensityAI
San Francisco, California, United States
Summary
🤩
RockstarCassandra Beckley is a Senior Software Engineer based in San Francisco with 12 years of experience building scalable backend and full‑stack systems across startups and large tech companies. She has led architecture work at Dropbox, implemented performance and data-model optimizations, and shipped production features at Google before moving to DensityAI. Her open-source contributions span notable projects—improving server-side stability for the educational game CodeCombat, enhancing Gatsby’s screenshot plugin with headless-browser automation and S3 integration, and fixing SPIR‑V backend issues in Microsoft’s shader compiler—demonstrating comfort across web, tooling, and low‑level code. Cassandra combines pragmatic system design with hands‑on refactoring and performance tuning, often reducing infrastructure costs and complexity. Colleagues rely on her for thoughtful cross-team coordination and mentorship, and she brings a knack for turning exploratory prototypes into maintainable products. An unexpected thread through her work is a pattern of improving developer and runtime ergonomics, from lazy evaluation and container pools to plugin tooling and compiler fixes.
12 years of coding experience
7 years of employment as a software developer
Stackoverflow
11reputation
1kreached
6answers
1question
Github Skills (35)
spirv10
javascript10
shader10
coffeescript10
api-design10
static-site-generator10
user-authentication10
webapp10
compiler10
nodejs10
hlsl10
gatsby10
react10
puppeteer9
c-language9
Programming languages (10)
Github contributions (5)
microsoft/DirectXShaderCompiler
Aug 2022 - Jan 2023
This repo hosts the source for the DirectX Shader Compiler which is based on LLVM/Clang.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:248 reviews, 12 commits, 105 PRs in 5 months
Contributions summary:Cassandra primarily contributed to the DirectX Shader Compiler, specifically focusing on the SPIR-V backend. Their work involved fixing bugs related to void returns and default arguments in function templates, improving the compiler's ability to handle these HLSL features. They also implemented support for logical operator intrinsics (and, or, select), and addressed formatting and HLSL test issues, further enhancing the compiler's capabilities.
directx-shader-compilercppclangbgfxhosts
gatsbyjs/gatsby
Feb 2018 - Dec 2021
The best React-based framework with performance, scalability and security built in.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:21 commits, 19 PRs, 1 push in 3 years 11 months
Contributions summary:Cassandra contributed extensively to the `gatsby-transformer-screenshot` plugin, enhancing its functionality and reliability. Their work involved implementing screenshot generation using a headless browser (likely Puppeteer), integrating with AWS S3 for storage, and optimizing the plugin for Gatsby v2. They also addressed bugs, added retina screenshot support, and integrated the plugin with the gatsbyjs.org website, demonstrating a focus on both backend and frontend aspects of the project. Additionally, the user refactored components and added styling to enhance the user experience.
gatsbyreactweb-appfastestcompiler
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