About Goatstone
Goatstone is Jose Collas, a web developer working mainly in JavaScript, TypeScript, CSS and HTML.
I build interactive, data-driven web applications: visualizations, maps and tools that make data easier to explore.
This site collects some of that work. Start with the Work page,
or get in touch about a project.
What I work with
- Front end: JavaScript, TypeScript, React, CSS, HTML, SVG
- Visualization: D3.js, Matter.js (2D physics), maps and geospatial data
- Reactive patterns: RxJS and React hooks
- Back end and devices: Node.js, MQTT, Android sensors, IoT experiments
- Distributed ledgers: Hedera, with the Hashgraph Developer Course completed in 2026
(see Certifications)
Featured work
Aaarto is an online drawing program that mints the artwork as an NFT on Polygon.
UmiƱa Achala is a marketplace concept for Peruvian stones and jewelry, with provenance records for each piece.
2DPhysics Data shows NASA's 100 heaviest meteorites in a 2D physics layout.
View GIBS is a viewer for NASA satellite imagery from its Global Imagery Browse Services.
See all work
Find me
Code, experiments and notes are on GitHub. Professional background is on LinkedIn.
Contact Jose