Daniel Kastl
Business Development at Geolonia Inc.
Kobe, Hyogo Prefecture, Japan
Summary
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RockstarDaniel Kastl is a geographer-turned-software entrepreneur with 16 years of experience blending open-source engineering, product development, and business development from Kobe, Japan. As CEO and Co-Founder of Georepublic and a founding member of the pgRouting project, he has driven core routing algorithms and stability fixes while also contributing full-stack improvements to high-profile projects like Potree, a WebGL point-cloud viewer. Now leading business development at Geolonia, he bridges technical depth—database and graph-algorithm expertise, build-system optimization—with go-to-market strategy for Next Generation Internet services. An OSGeo charter member, he combines academic rigor in geospatial systems with practical leadership, routinely shipping production-ready tooling and infrastructure. Notably, his hands-on fixes to pgRouting and Potree reveal a preference for improving build reliability and core functionality rather than surface-level features.
16 years of coding experience
English, German, Japanese, French
Stackoverflow
1,598reputation
115kreached
2answers
1question
Github Skills (17)
url-routing10
javascript10
c-language10
postgresql10
postgis10
build-automation10
gulpjs10
cprogramming-language10
css9
web-development9
documentation7
routes6
pgrouting6
gulp6
docker6
Programming languages (20)
Github contributions (5)
pgRouting/pgrouting
Nov 2010 - Jun 2020
Repository contains pgRouting library. Development branch is "develop", stable branch is "master"
Role in this project:
Back-end Developer / Database Engineer
Back-end Developer / Database EngineerContributions:5 releases, 33 reviews, 423 commits in 9 years 9 months
Contributions summary:Daniel primarily focused on improving the pgRouting library, specifically addressing issues with include paths, dependency errors, and functionality related to network analysis. They fixed path issues for boost/property_map, resolved a dependency error related to GMP, and addressed an issue where vertex IDs were assigned to NULL geometries. Furthermore, the user added the trsp algorithm and associated functions. These changes indicate a focus on the core functionality and stability of the routing library, especially concerning network analysis and graph algorithms.
spatial-analysispostgresql-extensionmastermap-matchingosgeo
potree/potree
Feb 2014 - Feb 2014
WebGL point cloud viewer for large datasets
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:25 commits, 20 comments, 3 issues in 8 days
Contributions summary:Daniel implemented and configured a build system using Gulp.js to manage and optimize JavaScript files within the Potree project. They added tasks for minification, concatenation, and also incorporated build, debug, and test tasks. Furthermore, they integrated basic CSS and documentation build processes, along with a simple web server. The user also refactored the build process to separate library files, including license files, demonstrating a focus on build process optimization and project structure.
webglpointpclviewerviewer-cloud
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