Kevin Kreiser
Technical Support Manager at KWI
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolKevin Kreiser is a Technical Support Manager with 14 years of experience bridging engineering and customer-facing teams to deliver reliable, data-driven solutions. Based in New York, he has progressed from VDR product support for complex financial M&A workflows to senior training and support roles, and now leads technical support at KWI. He pairs strong troubleshooting and process discipline with hands-on backend and database engineering experience—contributing to major open-source mapping projects like Valhalla, osm2pgsql, and Mapnik where he worked on traffic matching, PostgreSQL test suites, and geometry simplification. Known as a "high functioning contrarian," he brings a pragmatic contrarian streak to process improvement and technical decisions. A trained musician and longtime instructor, he leverages teaching and mentorship skills to translate complex systems into clear guidance for diverse user communities.
14 years of coding experience
Associate of the Arts Music Performance; Percussion, Associate of the Arts Music Performance; Percussion at Nassau Community CollegeBachelor of Music Music Education; Percussion Performance, Bachelor of Music Music Education; Percussion Performance at Long Island University
English, Spanish
Github Skills (31)
algorithm10
algorithms10
graph-algorithms10
c-language10
postgresql10
testing10
routing-slip10
mapnik10
data-structure10
mappings10
routes10
sql10
cartography10
data-structures10
cprogramming-language10
Programming languages (17)
Github contributions (5)
valhalla/valhalla
Dec 2014 - Jan 2023
Open Source Routing Engine for OpenStreetMap
Role in this project:
Back-end Developer
Back-end DeveloperContributions:46 releases, 3216 reviews, 3862 commits in 8 years 3 months
Contributions summary:Kevin's commits primarily focused on the development of the Meili traffic segment matcher engine for the Valhalla routing project. Their work involved implementing and optimizing core functionalities, including handling time-dependent and static traffic data, and interpolating measurement data with the help of time and direction properties. Further contributions were dedicated to the processing and organization of the edge data in the main algorithms and to serialization of the route and data into different formats, including Osrm output.
osrmmulti-modalnominatimtileddijkstra
osm2pgsql-dev/osm2pgsql
May 2014 - Dec 2014
OpenStreetMap data to PostgreSQL converter
Role in this project:Back-end & Database Engineer
Back-end & Database EngineerContributions:115 commits, 7 comments in 6 months
Contributions summary:Kevin primarily focused on improving the test suite by addressing database-related dependencies. Their commits included updating regression tests to accommodate PostgreSQL extensions (postgis, hstore, spatial_ref_sys) and SQL files used in the testing framework. They also addressed merge conflicts and modified code related to database connection and data storage within the osm2pgsql project.
converteropenstreetmap-datanominatimosm2pgsqlpostgis
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