Dan Vanderkam
Independent Software Developer at Freelance
New York, United States
Summary
🤩
Rockstar🎓
Top SchoolDan Vanderkam is an independent software developer and author with 18 years of experience building developer tooling, front-end systems, and type-safe libraries, formerly at Google and Sidewalk Labs. He wrote Effective TypeScript and has deep expertise in type systems and developer UX, reflected in substantial contributions to high-profile repos like DefinitelyTyped and flow-typed. At Google he led frontend and infrastructure teams and later implemented a major new TypeScript compiler feature during a Recurse Center residency. His open-source work spans visualization (dygraphs), bundle analysis (source-map-explorer), and geospatial typings, showing a knack for practical tools that improve developer productivity. Based in New York, he combines engineering leadership with hands-on coding, speaking, and writing. Colleagues value his pattern-oriented approach to types and his ability to translate complex language features into usable libraries and docs.
19 years of coding experience
17 years of employment as a software developer
Bachelor's degree Math Computer Science, Bachelor's degree Math Computer Science at Rice University
Stackoverflow
16,218reputation
3.0mreached
315answers
92questions
typescript
top-5%
max
top-5%
protocol-buffers
top-5%
javascript
top-1%
Github Skills (42)
data-visualizations10
typesc10
javascript10
flow-control10
mapbox-gl10
annotations10
css10
work-flow10
typescript10
typescript-definitions10
data-visualisation10
type-definition10
geojson10
type-system10
dts10
Programming languages (22)
Github contributions (5)
danvk/source-map-explorer
Oct 2015 - Sep 2022
Analyze and debug space usage through source maps
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:14 releases, 78 commits, 51 PRs in 7 years
Contributions summary:Dan primarily focused on enhancing the `source-map-explorer` tool, as evidenced by their commits. They implemented features to generate and display a treemap visualization of source code sizes, enabling users to analyze and debug space usage. The user also added functionality to open the treemap in a browser, refactored code for improved maintainability, and incorporated features such as glob support, find/replace functionality and HTML output generation.
sourcemapssource-mapjavascripttreemapminification
danvk/dygraphs
Aug 2009 - Oct 2022
Interactive visualizations of time series using JavaScript and the HTML canvas tag
Role in this project:Front-end Developer
Front-end DeveloperContributions:1 release, 1455 commits, 144 PRs in 13 years 4 months
Contributions summary:Dan's contributions primarily focused on enhancing the user interface and functionality of the dygraphs library. They implemented features for improved data visualization, including the ability to customize renderer options, add annotations with visual cues and interactive elements, and support for setting custom CSS classes and event handlers. This involved modifying core JavaScript files, adding new HTML test pages, and updating the overall user experience.
javascripttime-seriesvisualizationsdygraphsvisualization
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