Stefan Karschti
Independent Geospatial Architect & Engineering Advisor
Cluj-Napoca, Romania
Summary
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Rockstar🎓
Top SchoolStefan Karschti is an independent geospatial architect and engineering advisor with a track record of designing high-performance mapping and navigation systems driven by OpenStreetMap and C++ for mobile and embedded platforms. Over more than 15 years he has led and built map SDKs, navigation stacks, and compilation pipelines in production (Skobbler, Telenav), specializing in map data formats, incremental OSM pipelines, and OpenGL rendering under tight resource constraints. He pairs deep hands-on technical expertise—profiling, data-size optimization, and GPU/CPU trade-offs—with engineering leadership, having managed teams of up to ~60 engineers and shaped delivery practices and roadmaps. Stefan’s strength is tackling the “hard stuff”: shrinking map footprints, speeding renderers, and making reliable update pipelines that operate at scale. Based in Cluj-Napoca, Romania, he often acts as a pragmatic advisor who moves teams from prototype to repeatable, production-grade delivery. An under-the-radar asset: he combines product-facing coordination with low-level systems work, so he can both design formats and review the C++ that ships them.
6 years of coding experience
20 years of employment as a software developer
Computer Science, Computer Science at Universitatea „Petru Maior” din Târgu-MureșEconomics, Economics at Economics
English, Romanian, German, French
Stackoverflow
21reputation
498reached
3answers
0questions
Github Skills (27)
ios10
vector-tiles10
android10
maps10
osm-data8
commons8
data-files8
openstreetmap7
census7
macos6
counting6
s26
operator-overloading6
reader6
macos-catalina6
Programming languages (4)
Github contributions (5)
stefankarschti/os1
Sep 2023 - May 2026
Contributions:2 PRs, 47 pushes, 17 branches in 2 years 7 months
stefankarschti/inputosm
Jan 2022 - Feb 2023
A high performance reader of OSM data files.
Contributions:5 reviews, 65 commits, 13 PRs in 1 year
osm-datac-plus-plusperformancedata-filesreader
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