Top Software Engineers in

Geospatial Technology and Web Mapping

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gis
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javascript
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geospatial
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openstreetmap
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python

Geospatial Technology and Web Mapping encompass the use of geographic information systems (GIS), JavaScript libraries, and various mapping technologies to create, analyze, and display geographical data on the web. This field integrates spatial data analysis, interactive map visualization, and location-based services using platforms like OpenStreetMap and tools such as Leaflet, Mapbox, and OpenLayers. Applications range from environmental monitoring to urban planning and navigation services.

Ranks are based on the open source contributions and reassessed every 30 days

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1

Nyall Dawson
Proprietor and lead developer at North Road
/
Australia
Rock Star
15 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
6990 reviews, 22839 commits, 20568 PRs in 10 years 2 months
north-road/qgis-processing-saga-nextgen
9 reviews, 122 commits, 27 PRs in 6 years 10 months
nyalldawson/QGIS
3 reviews, 345 commits, 10 PRs in 9 years 4 months
Top skills
Score
geometric-algorithms
10
spatial-analysis
10
parser
10

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2

Even Rouault
Software Engineer at Spatialys
/
France
Rock Star
17 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
rouault/gdal_coverage
85392 commits, 2 PRs, 62257 pushes in 10 years 9 months
OSGeo/gdal
42 releases, 1927 reviews, 37241 commits in 15 years 8 months
freekvw/gdal
6034 commits in 7 years 3 months
Top skills
Score
projections
10
encoding
10
imap
10

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3

Jürgen Fischer
General Manager at norBIT GmbH
/
Germany
Rock Star
24 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
65 reviews, 9997 commits, 477 PRs in 15 years 5 months
norBIT/alkisplugin
176 commits, 70 pushes, 27 comments in 9 years 8 months
mbernasocchi/QGIS
2117 commits in 3 years 6 months
Top skills
Score
projections
10
parallel-computing
10
jupyter
10

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4

Frank Warmerdam
/
Canada
Rock Star
29 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
OSGeo/gdal
14861 commits, 2 pushes, 2 branches in 22 years 1 month
rouault/gdal_coverage
9184 commits in 16 years 4 months
MapServer/MapServer-import
1562 commits in 10 years 11 months
Top skills
Score
geometric-algorithms
10
lidar
10
geotools
10

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5

Tim Sutton
Partner at Kartoza
/
South Africa
Rock Star
20 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
3 reviews, 6626 commits, 90 PRs in 18 years 4 months
inasafe/inasafe
45 releases, 4432 commits, 766 PRs in 10 years 3 months
qgis/QGIS-Documentation
6 reviews, 65 commits, 15 PRs in 11 years 1 month
Top skills
Score
databases
10
docker-image
10
health
10

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6

Daniel Bagnell
3D Software Developer
/
United States
Rock Star
12 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
CesiumGS/cesium
2 releases, 5294 commits, 529 PRs in 7 years 1 month
CesiumGS/3d-tiles
24 commits, 3 PRs, 21 pushes in 7 months
CesiumGS/gltf-pipeline
5 commits, 3 PRs, 4 pushes in 2 years 2 months
Top skills
Score
webgl
10
gis
10
ogc
10

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7

Marco Bernasocchi
Helping clients implement opensource for the geospatial world · Founder & CEO at OPENGIS.ch LLC · QGIS.org Chair · OSGeo board member, full-stack geoninja, consultant and Keynote speaker.
/
Switzerland
Rock Star
12 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
1299 reviews, 5931 commits, 3318 PRs in 10 years 7 months
opengisch/QField
105 releases, 1460 reviews, 2450 commits in 8 years 3 months
qgis/QGIS-Website
11 reviews, 73 commits, 42 PRs in 9 years 5 months
Top skills
Score
projections
10
raster
10
python
10

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8

Matthew Amato
Engineering Leader at Cesium GS, Inc.
/
United States
Rock Star
12 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
CesiumGS/cesium
7 releases, 62 reviews, 4704 commits in 10 years 3 months
mramato/mramato.github.io
38 commits, 32 pushes in 3 years 10 months
AnalyticalGraphicsInc/czml-writer
142 commits, 6 comments, 3 issues in 2 years 6 months
Top skills
Score
api
10
tiles
10
mandrill
10

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9

Patrick Cozzi
CEO at Cesium | BuildingTheOpenMetaverse.org Podcast Co-Host
/
United States
Rock Star
12 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
KhronosGroup/glTF
1 review, 1160 commits, 551 PRs in 7 years 9 months
CesiumGS/cesium
1 release, 4677 commits, 898 PRs in 7 years 11 months
CesiumGS/3d-tiles
13 reviews, 489 commits, 213 PRs in 6 years 6 months
Top skills
Score
html5
10
cpp
10
czml
10

#

10

Marco Hugentobler
/
Switzerland
Rock Star
21 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
36 reviews, 5314 commits, 277 PRs in 19 years 9 months
mbernasocchi/QGIS
2171 commits in 7 years 11 months
mhugent/QGIS
703 commits, 7 PRs, 455 pushes in 11 years 3 months
Top skills
Score
ogc
10
geotools
10
data-management
10

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11

Alessandro Pasotti
Independent Computer Software Professional at Itopen
/
Italy
Rock Star
14 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
964 reviews, 5156 commits, 2614 PRs in 9 years 2 months
qgis/QGIS-Django
1 review, 332 commits, 11 PRs in 9 years 11 months
elpaso/QGIS
790 commits, 3 PRs, 2336 pushes in 7 years 8 months
Top skills
Score
api
10
cms
10
spatial
10

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12

Sean Lilley
Focussing on my Mental Health at Montenegro
/
United Kingdom
Rock Star
TOP CONTRIBUTIONS TO PROJECTS
CesiumGS/cesium
9 releases, 460 reviews, 3637 commits in 7 years 6 months
CesiumGS/3d-tiles
105 reviews, 565 commits, 294 PRs in 7 years 3 months
CesiumGS/glTF
99 reviews, 168 commits, 38 PRs in 2 years 6 months
Top skills
Score
heightmap
10
geopackage
10
ogc
10

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13

Martin Dobias
Employed at lutraconsulting
/
United States
Rock Star
18 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
580 reviews, 3634 commits, 879 PRs in 16 years 11 months
mbernasocchi/QGIS
1185 commits in 5 years 4 months
wonder-sk/QGIS
646 commits, 4 PRs, 518 pushes in 8 years 5 months
Top skills
Score
projections
10
osgeo
10
two-way
10

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14

Andreas Hocevar
Software Developer
/
Austria
Rock Star
16 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
openlayers/openlayers
45 releases, 1507 reviews, 5380 commits in 10 years 8 months
openlayers/openlayers.github.io
10 reviews, 410 commits, 64 PRs in 9 years 11 months
openlayers/ol-mapbox-style
94 releases, 378 reviews, 1071 commits in 6 years 6 months
Top skills
Score
css
10
node-js
10
maps
10

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15

Volodymyr Agafonkin
Engineer at Mapbox, creator of Leaflet
/
Ukraine
Rock Star
14 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
Leaflet/Leaflet
12 releases, 379 reviews, 3751 commits in 12 years 5 months
mapbox/mapbox-gl-js
23 releases, 479 reviews, 1415 commits in 9 years 3 months
mourner/projects
48 commits, 51 pushes, 1 branch in 7 years 3 months
Top skills
Score
stdin
10
r-tree
10
offline-maps
10

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16

Gary Sherman
Author, Publisher, Programmer at Geoapt
/
United States
Rock Star
22 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
3381 commits, 4 pushes, 4 comments in 15 years 6 months
mbernasocchi/QGIS
1827 commits in 8 years 9 months
g-sherman/Qgis-Plugin-Builder
226 commits, 33 PRs, 72 pushes in 9 years 1 month
Top skills
Score
cross-platform
10
spatial
10
wps
10

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17

Denis Rouzaud
Senior GIS developer at OPENGIS.ch
/
Switzerland
Rock Star
15 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/pyqgis
5 reviews, 191 commits, 54 PRs in 5 years 1 month
qgis/QGIS
508 reviews, 3263 commits, 2368 PRs in 10 years 8 months
3nids/QGIS
861 commits, 92 PRs, 3273 pushes in 6 years 8 months
Top skills
Score
openwisp
10
geojson
10
build-environment
10

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18

Alexander Bruy
/
Ukraine
Rock Star
14 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
qgis/QGIS
462 reviews, 3210 commits, 1019 PRs in 11 years 11 months
north-road/qgis-processing-saga-nextgen
34 commits in 4 years 2 months
planetfederal/qgis-milstd2525-plugin
43 commits, 29 pushes, 2 branches in 1 year 7 months
Top skills
Score
ios
10
ogc
10
python
10

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19

Tim Schaub
Principal Geospatial Architect at Planet
/
United States
Rock Star
18 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
openlayers/openlayers.github.io
1 review, 226 commits, 6 PRs in 9 years 6 months
openlayers/openlayers
36 releases, 1185 reviews, 4792 commits in 10 years 8 months
BentleySystems/openlayers
2711 commits in 5 years 4 months
Top skills
Score
themes
10
testing
10
data-interchange
10

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20

Kevin Ring
3D Software Engineer at Cesium
/
Australia
Rock Star
16 years of coding experience
TOP CONTRIBUTIONS TO PROJECTS
TerriaJS/terriajs
3 reviews, 5567 commits, 1565 PRs in 8 years 9 months
CesiumGS/cesium
4 releases, 2 reviews, 2194 commits in 10 years
CesiumGS/cesium-unreal
60 releases, 168 reviews, 1880 commits in 2 years 9 months
Top skills
Score
data-catalog
10
specification
10
converting
10

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