Adeyemi Omolola is an aspiring geospatial data analyst and a final-year student of the Department of Geography, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria. She has interests in agriculture, GIS, data, remote sensing, sustainability and content writing

She is the current President of YouthmappersOAU. Under her tenure, she has led the association to the semi-finals of the Africa Map Cup competition 2026, hosted numerous training programs and led a campus audit project where inclusivity and safety for People Living with Disabilities were the key.

Adrien has been an OpenStreetMap contributor since 2010 and is specialized in software development for GIS and open data. He has developed tools such as GeoDataMine, YoHours and OpenLevelUp, and is involved in the development of Panoramax. As a freelance entrepreneur and founding member of the Federation of OpenStreetMap Professionals (FPOSM), he promotes OpenStreetMap to a wide range of organizations (local authorities, businesses and associations).

Alyssa is the Program Coordinator at OpenStreetMap US in Richmond, Virginia and wears many hats in that role, including co-leading Working Groups, supporting programs like TeachOSM, and organizing State of the Map US. She is also a member of MapRVA, the local OSM group in her city. This will be her first global State of the Map conference!

Amanda McCann is a mapper and programmer originally for Ireland, but is now a queer trans woman living in Germany, and works at Geofabrik keeping servers online.

She's been active in OSM for 15+ years, doing things that keep her interested., such as running Irish historical mapping projects Townlands, being on the OSM Foundation Board, and lately, hydrology mapping with WaterwayMap.org.

Outside OSM, she enjoys hiking.

Andy is a long-time OSM mapper, cartographer and developer. He currently volunteers as a software developer and maintainer for the core openstreetmap-website project.

He also runs Thunderforest, a mapping business that creates reliable, high-quality maps based on OSM data. These maps are used in a wide range of apps and websites, with customers over the world, and are used for cycling, hiking, public transport and more.

Anne is a researcher, facilitator and artist. She previously spent ~2 years with the OpenStreetMap community as an ethnographer during her graduate studies, and now facilitates mapathons for the Missing Maps project. She makes media art with maps, and is a fellow with the Software Sustainability Institute in 2026 with the aim of connecting academic and creative computing communities.

Antoine came across OSM in 2014 and this changed his life. In just a few weeks he turned from a GIS developer to an OpenStreetMap consultant, and founded Carto’Cité. Antoine works with SNCF since 2016, and conducted the detailed mapping of 436 railway stations with a team of 6 mappers.

Antoine is a member of OSM France and organised several voluntary projects in Nantes where he lives.

Carto’Cité is a funding member of the french Fédération des professionnels OpenStreetMap (FPOSM).

Bart is the maintainer of MapLibre Native, an open source community driven map rendering toolkit used by many such as OSM editors, ride sharing apps, hiking navigation apps and many more.

He is passionate about open source and a free internet that works for everyone. In his free time he likes to kayak, play board games and map.

Bas Bussink is a Product Owner for the Nationaal Wegenbestand (NWB), the official digital road network of the Netherlands. The NWB provides a standardized and authoritative description of the national road infrastructure and serves as a reference dataset for public authorities and data users. In his role, Bas coordinates the definition, prioritization, and maintenance of the product, working with stakeholders and development teams to ensure the data remains consistent, accurate, and usable for policy, analysis, and operational purposes.

Bastian is an interdisciplinary researcher who works on the theory & practice of peer-production and citizen science, he has co-led and contributes to a wide range of FLOSS efforts covering many domains. Since ~May/June 2025, he has tried putting his skills to use to help the CoMaps project.

You can learn more about him and his work at https://tzovar.as

Graduate as an engineer in information technology, industrial production and human-machine interfaces, I have been working since 2012 across various organizations, all with a common goal: to create technical solutions that meet real needs in the most effective way possible, considering their social and environmental impacts.

As Developer and Product Owner, I'm also sustainable IT lead. I recently joined a team and embarked on a new venture centered on a digital mapping product based on OSM (Tesmo Maps), to provide sustainable and independent solution to the mapping needs of the SNCF group.

Benjamin Herfort is researcher at HeiGIT and Heidelberg University. Benjamin leads the Technical Innovation Group at HeiGIT where he is helping to develop open source tools and methods that incorporate geographic information systems for disaster management, humanitarian aid and climate action.

In his PhD he has investigated questions of representation and data quality in OpenStreetMap. In his research and work he is furthermore dealing with the temporal evolution of OpenStreetMap data, MapSwipe and information from social media.

I am a geomatics project manager at Montpellier Métropole, specializing in public spaces.
Our road network database, along with a wide range of specialized data (accessible parking spaces, etc.) and our city map, are sourced from OSM.
We manage and import this data using the LeBonTag software, and we are now introducing version 2.

An OpenStreetMap enthusiast since 2014.
A guy with a long mustache who loves to map sparsely populated areas to the extreme.

• Bicycle Surveyor on Panoramax (GoPro Max 2)
• Multipolygon Exploder on JOSM
• Itch on address data (see Schema of Charlieu and “contact:housenumber”)
• An irregular OpenStreetMap videographer on PeerTube

OSM contributor since 2009, founder of OpenStreetMap France in 2011.
Part of the team that takes care of OpenStreetMap France servers and several services (for example the french and humanitarian basemaps, uMap, etc.).

Initiator of several project like OpenEventDatabase, opendatArchives, OpenSolarMap... and Minitel museum !

Currently fully dedicated to the Panoramax project.

Christoph Hormann (imagico) is a freelance graphics designer, methodology developer, and consultant specializing in the production of visualizations of the Earth’s surface - ranging from realistic 3D views to traditional maps. He has been involved in OpenStreetMap since 2013, in particular in map design. He is a maintainer of OpenStreetMap-Carto, the default map featured on the OpenStreetMap website and regularly writes about map design topics as well as social, organizational and technical matters of significance for the OSM community on his blog.

Contributrice bretonne depuis 2018, je participe aux rencontres brestoises et prends plaisir à enrichir OpenStreetMap.

À travers mon travail en médiathèque, j’ai eu envie de faire découvrir la cartographie libre à un public plus large, en menant des projets concrets et collaboratifs. Aujourd’hui, je suis ravie de partager cette expérience avec vous et d’échanger sur la place d’OSM comme outil de médiation culturelle et patrimoniale.

I am an open data expert, working at SNCF (the french railway company) for 10 years on OSM-related software projects.
I am currently working on OSRD (osrd.fr), an open-source web application for railway infrastructure design, capacity analysis and timetabling. In OSM, I am interested in railway infrastructure description data (tracks, signals, stations, electrification, speed limits, milestones...).

Daniel Schep is a professional software engineer at onX maps and an amateur cartographer. At his day job he builds internal tooling for working with OpenStreetMap data. In his free time he has created Ultra, OpenTrailStash, and a few other open-source OSM-based projects and maps (see trailstash.net)

As a researcher and innovation manager at Makina Corpus, I was first introduced to OpenStreetMap during my studies at ENSG, now known as Geodata-Paris. Today, I develop projects that combine geospatial data with social issues, particularly in the areas of pedestrian accessibility, sustainable water management, and land-use planning.

A cartographer and geomatics specialist by training, I have been contributing to OpenStreetMap projects for 10 years. I incorporated OSM into my professional work before expanding my involvement to other projects such as Wikipedia. I am now a trainer and raise awareness of Wikimedia projects as a Wikimedia resident at URFIST in Paris.

Dennis Luxen is a computer scientist and routing expert, best known as the original lead developer of the Open Source Routing Machine (OSRM), a pioneering open source routing engine built on OpenStreetMap data. He earned his Ph.D. from the Karlsruhe Institute of Technology, where he focused on scalable route planning algorithms and mapping services.

Over his career, Dennis has specialized in building low-latency, high-performance systems that translate complex research into practical technology. His work sits at the intersection of algorithms, infrastructure, and real-world applications at scale.

Digitaleo is a SaaS platform that enables businesses to manage their online presence across multiple directories.

When a business owner updates their point-of-sale information on Digitaleo, the changes are automatically published to OpenStreetMap via the API. Each edit corresponds to a single user action this is not an autonomous bot.

I am a volunteer OpenStreetmap contributor and Free/Libre and Open Source Software enthusiast. I contribute to OpenStreetMap mostly in Ghana where I try to add new features and also fix many useless contributions from years and recent by both individual or organized remote mappers. I support Good changeset comments.

Erica 'spughetti' Temp is a queer mapper from the Netherlands. She began contributing to OSM in May of 2022 when in dire need of a new hobby. She currently does general OSM wizardry and community engagement at TomTom.

Spughetti is passionate about humanitarian mapping, particularly mapping roads leading towards settlements in Africa that are currently missing entirely from the map.

Felix is specialized in development of high performance software and optimization problems, especially in mobility. He is a maintainer of the MOTIS project which is open source since May, 2020. He works at the Technical University of Darmstadt and founded his startup triptix GmbH, which offers professional support, hosting and development for MOTIS.

Frank Elsinga from the Technical University of Munich is a member of the MapLibre Governing Board. He is actively engaged in advancing open innovation in the field of vector-based map rendering. Through his work, he helps bridge the gap between the open-source MapLibre community, academic research, and public administration, fostering collaboration and enabling the development of more transparent, accessible, and high-performance geospatial technologies.

I'm 36. OpenStreetMap got me busy for 15 years now, mainly about infrastructures and public utilities topics. It began as a hobby prior becoming a game changer in my professional background. I'm involved in mapping mainly in France and interested in tagging development as well. Crowdsourcing very important knowledge thrills me to tackle crucial challenges like energy transition or climate change resilience. Sustainability, open source, open data and common good are also additional motivations to collaborate withing this community.

Contributor for more than a decade, interested in data quality, vector tiles, and routing engines. Maintainer of Osmose-QA, an open-source OSM quality assurance tool detecting lot of issues worldwide. CTO at Teritorio, building OSM-based interactive web maps for local governments, and CTO at Cartoway, developing OSM-powered last-mile delivery optimization tools for logistics operators.

Giacomo Alessandroni is an IT and robotics teacher, fields in which he has a deep passion. He considers himself an electronics engineer dedicated to public education.

He has been an active mapper since 2009. He is the Wikimedia Italia Marche Region coordinator since 2021.

This school year he has proposed a map activity to his pupils: this is the topic of the talk.

Grant Slater is a long-time OpenStreetMap mapper (since 2006) and member of the OSM Operations Team. He has helped run the project's infrastructure since 2007 and now works as a Site Reliability Engineer for the OpenStreetMap Foundation. When not keeping servers online, he can usually be found on his allotment battling slugs.

I work at the UBO ("Université de Bretagne Occidentale", Brest, France). as part of the university's mapping project for the "Tous EGO" program. Being disabled myself, I first joined the project as a student and was offered a position. That's how I discovered OpenStreetMap and being curious, I investigated and found an amazing platform with the potential to make life easier for us all.
My academic journey lead me from the scientific field to languages (german), and I stumbled on this project during my last year in public administration.

Héctor began mapping in 2011 and joined Mapeado Colaborativo in 2016. With a Computer Engineering background, he pursued a master’s in Cartography and is now completing a PhD at the University of Camerino, Italy.
Passionate about transportation and urban mobility, Héctor enjoys travelling and exploring new cultures. In 2024, he joined the OpenStreetMap Foundation board.

I work as a software developer at OpenStreetMap US, a non-profit organization which supports the OSM community in the United States and beyond. I help maintain OSMCha and MapRoulette, and various other open-source projects.

When I'm not writing code, I enjoy hiking and mapping trails. I'm a member of the OSM US Trails Working Group, which convenes mappers, land managers, and outdoor app developers to improve the accuracy of trail data in OSM.

Jakub Zmrzlik is a product manager at Mapy.com (Seznam.cz), a widely used map platform serving millions of users across web and mobile. He has over 15 years of experience in digital mapping and cartography, focusing on building and operating large-scale map products.

His work is centered on outdoor navigation, particularly hiking and cycling, where data quality and real-world usability are critical. He works across product, data, and cartography, with a strong focus on turning OpenStreetMap data into reliable services used in everyday situations.

Jean-Louis Zimmermann is a road information manager at the Vaucluse Departmental Council (CD84) in Southern France, where he oversees data quality and enhancement of the departmental road network.
Urban planner by training, he previously worked in a municipality and intermunicipal authorities, notably as project manager for territorial development and accessibility for people with disabilities. Since 2009, as an active OpenStreetMap contributor (user JLZIMMERMANN) and Wikidata editor, he has conducted numerous experiments and cartoparties to map accessibility (wheelchair, visual, etc.), developing dynamic maps and practical workflows with tools such as Lizmap, Mapillary and Panoramax.

Julien has a backgound in both Mathematics and Computer Science. He is a co-founder and director of R&D at Verso, where he leads the dev efforts on Vroom, an open source optimization engine for vehicle routing problems that heavily relies on OpenStreetMap data.

The German Federal Agency for Cartography and Geodesy (BKG) set their task to promote the usage of open source sotware and open data products. This also includes the usage of OpenStreetMap data as a part of federal geodata products. Furthermore, the BKG publishes data products under open data licenses with ODbL conformity.

I work in a coordinative function at the BKG and would like to talk about the growing role of OpenStreetMap for national mapping and cadastral agencies (NMCAs). Furthermore I would like to throw the spotlight on a national OSM chapter which promotes the preservation of OSM data.

Kshitij Raj Sharma is a geospatial developer from Nepal, passionate about open-source software and open data. with FOSS advocacy experience, he is a founding member of OSGEO Nepal and active in OSM Nepal. He is currently a student in the Copernicus Master's in Digital Earth program, specializing in Geo Data Science and AI, and an AI engineer at HOTOSM.

Laura is a Geospatial engineer working at the intersection of open data, free and open-source software, and sustainable development. Committed to building for impact, she harnesses the power of technology to drive positive change.

In her free time, Laura volunteers with tech communities. She currently sits on the OpenStreetMap Foundation board to support the OpenStreetMap community, a worldwide mapping effort to create and provide free geographic data to anyone, anywhere, with no restrictions.

I am a GIS engineer for the French National Centre for Scientific Research (CNRS), working mainly with the R language. One of my main research field is spatial accessibility, for which I use OSM as data source for routing engine. I also give statistic and geomatic courses at the university, at Master level.

Maggie has been spending her time volunteering with OpenStreetMap for more than a decade. She spent 10 years as a geospatial consultant and urban planner. Maggie currently serves as the Executive Director for OpenStreetMap US where she works to engage, support and grow the OpenStreetMap project and community across the United States through programs, advocacy, and the annual State of the Map US conference.

Hello, I'm Marina !

I contribute to OpenStreetMap both as a volunteer and professionally.

I am based in France, where i co-founded the company Dynartio.
We focus on tooling and data analysis for circular economy and territorial resource flows.
We use OpenStreetMap, both as contributors and as practitioners.

I am member of the FPOSM, and the MapYourGrid initiative.

You can find me here, here, or here.

Martijn joined OSM way back in 2007, when the only way to map was to bike around the city with a GPS device an pen and paper. He still prefers survey mapping above everything else. Martijn has been involved in the community as a mapper, software developer and community organizer ever since. He has been on the OSMF Board of Directors and the OSM US Board of Directors. Martijn is also involved in the geospatial world as a professional, having worked at companies like TomTom, HERE and Meta. He currently lives in Salt Lake City, Utah, USA.

I like maps. At first, I was content just looking at maps. Then I made my own maps. Then I made tools for making maps. Now I make tools for making map-making tools, as a contributor to GeoDesk.

(I also like brevity, but this field needs 11 more words)

I do currently maintain the iD editor for the OpenStreetMap Foundation. I do also have a part time position at HeiGIT (Heidelberg Institute for Geoinformation Technology), where I contribute to software for academic research about OSM data. I'm also responsible for overpass-turbo, the web interface for the Overpass API, as well as a few other OSM-related projects.

Active OpenStreetMap mapper and contributor to software powering OpenStreetMap. Contributed some minor improvements to multiple editors and significant improvements to StreetComplete and iD.

Mapper active since 2013, especially interested in mapping bicycle infrastructure, hiking trails, parks. Mapping using Vespucci, StreetComplete, JOSM, level0, special editing tools and automated edits.

Involved in improving documentation about existing tagging schemas by contributing to OpenStreetMap Wiki. Active also in inventing new tagging schema where existing ones were insufficient.

I founded Geonov in 2017 to help my clients address their geographic data processing challenges using tools such as FME, PostgreSQL, and QGIS.
Geonov responded to a call for proposals from Montpellier Méditerranée Métropole to develop LeBonTag, a modular tool for integrating OpenStreetMap data.
In 2025, version 2 of the tool was developed.

I develop a number of open-source applications at github.com/styluslabs. I use testing maps as a great excuse for hiking, cycling, and ski touring. Originally from the United States, I am currently a researcher at the European Center for Quantum Sciences in Strasbourg, working on neutral atom quantum computing.

Matteo Duniš is a Master’s student in Cartography in the Erasmus Mundus programme, currently based at TU Dresden. He is particularly interested in web mapping and how geospatial data can better reflect real-world conditions. Outside of his academic work, he enjoys hiking and being outdoors. He is also the Vice-President of a youth association in Slovenia.

Matthieu Chatry coordinates La République des Cartes at IGN, the French national mapping agency. His real craft, though, is the animation of learning communities. For the past decade - first with leChaudron.io, then as an independent facilitator under the Amuseurs name, he has designed workshops and built communities of practice to help people of all backgrounds build a confident, hands-on relationship with digital tools and most recently generative AI.
He now brings the same approach to maps: animating the coalition of partners and organisers behind La République des Cartes.

Maurine Oyugi is a Geomatics Engineer and GIS Consultant based in Nairobi, Kenya. She currently consults with Bricon Consulting and serves as a Volunteer Regional Ambassador for YouthMappers. With experience in geospatial data collection, mapping, and community engagement, Maurine has led and supported projects across Africa, collaborating with organisations such as the Red Cross and the Clinton Health Access Initiative. She specialises in using open-source tools to solve local challenges. As a young mother and advocate for inclusive mapping, she is passionate about using spatial data to empower women, support childcare access, and drive evidence-based decision-making.

Actif sur les sujets des cartes, la mobilité, le climat, l'énergie.

Working on maps, mobility, climate, energy.

Développeur pour beta.gouv.fr depuis 10 ans, où j'ai pu contribuer au lancement de mon-entreprise.fr, Comobi, nosgestesclimat.fr, publi.codes et mesaidesreno.beta.gouv.fr. Je travaille maintenant à plein temps cartes.app.

I've been working for the French gov for 10 years as a developer, launched multiple well know websites. Now working fully on cartes.app.

https://bsky.app/profile/mael.kont.me

OSM contributor since 2008.
Developing backend and frontend tools to visualize and analyze OSM since the early days.
Co-creator of former and current OSM Services like osm-wms.de, HistOSM.org, osmlanduse.org, hex.ohsome.org, dashboard.ohsome.org, and stats.now.ohsome.org.
Research and Teaching of GIScience at University of Bonn (2008-2010) and Heidelberg University (2010-today).
2019 PhD in Geography on "Advancing 3D WebGIS –
browser-based Methods for Visualization and Analysis and their Integration in Virtual Research Environments in the Context of Cultural Heritage"

Michael is an OSM contributor since 2016 and currently works as Software Engineer at the European Commission Joint Research Centre. For the past 6 years, he worked for the United Nations Global Service Centre where he brought OpenStreetMap to UN Secretariat, Agencies and Peacekeeping missions. Previously he was 2018 YouthMappers Research Fellow and co-founder of PoliMappers, the first European chapter of YouthMappers. Over the years, he trained thousands of new OSM contributors from universities and local communities worldwide, especially in Africa and Europe.

Michael has been contributing to OpenStreetMap since 2011 and a member of FOSSGIS e.V. and OpenStreetMap Foundation. He is focused on railways, cycling and hiking. He regularly reverts other bad edits. Sometimes, he uses questionable edits as targets for cycling or hiking trips. He maintains openrailwaymap.org in his spare time.

Minh is a longtime mapper and community organizer for OpenStreetMap and OpenHistoricalMap, focusing on the United States. On a typical day, you can find him roaming the streets of Silicon Valley, looking for quirky things to add to both maps. He serves as the OpenStreetMap Foundation’s Core Software Development Facilitator, thanks to an investment from the Sovereign Tech Fund. He also volunteers as a member of the Software Dispute Resolution Panel, administrator of the OpenStreetMap Wiki, and advisor to OpenHistoricalMap.

Niruta Neupane is a licensed Geomatics Engineer from Nepal specializing in spatial data analysis, WebGIS development, and open-source mapping. Her work focuses on climate-vulnerable mountain regions, low-cost data collection methods, and improving OpenStreetMap data quality in remote environments. She is actively involved in community mapping initiatives and mentors new contributors in South Asia.

Oliver Wipfli has a background in Physics and learnt about web maps when building a hot-air balloon tracker in 2019. Ever since then the passion for creating maps has grown. He created vector tiles with the first versions of Planetiler, helped build the MapLibre organization, and is now focusing mostly on raster assets such as terrain models and aerial imagery. Oliver works as an independent consultant in the maps and location tech industry.

Originally from Spain, currently in Northern Ireland, Pablo is a freelance Software Engineer specialising in web applications with Ruby. During his career, he has taken part in a long list of projects for companies ranging from small music startups to large banking concerns. Currently he is fulfilling his dream of working as a developer of Open Source Software, as a Core Software Developer for the OpenStreetMap Foundation

Patrik works as a Missing Maps GIS Officer at Médecins Sans Frontières (MSF).

Patrik started contributing into OSM thanks to a Missing Maps mapathon Bratislava in January 2020. Since then he became one of the core members of Missing Maps Czechia/Slovakia, Missing Maps London, wrote down multivalidation workflow for validating tasks on HOT Tasking Manager as his OSM diary post, created his own JOSM paint style, set of rules for JOSM validation plugin and currently maintaining the missingmaps.org website. He is based in Prague, Czechia.

A digital accessibility consultant by day, a keen explorer of Vienna by night, I profit heavily from the wealth of data provided by OSM. In my free time, I enjoy exploring different languages and cultures, podcasting and radio and of course travelling!
At the conference I hope to connect with experienced OSM contributors and software developers to deepen my knowledge on how open data can help me improve my understanding of the world.

Pierre is a contributor to OSM and to the Centipede-RTK project.

He wrote the Millipede caster open-source software which serves the RTK streams of Centipede, with room for growth.

He is also involved in various past or present projects related to free software (FreeBSD) and the Internet (domain names).

French developer. 8/16/32/64 bits compatible.
I also do some photography and try to write texts.
I've been doing urban exploration before the Y2K bug, and a bit after.
Contributed to Luanti/Minetest project (core & mods). Still developing some mods.
Working at french mapping institute (IGN) since 2023.

After studying informatics at Ghent University, Pieter was drawn into OpenStreetMap. As freelancer, he developed MapComplete, which aims to be an easy-to-use and topical map viewer and editor. You might find him climbing or cycling somewhere, even though he'll often pause to add something to OSM.

He worked 5 years for Anyways.eu, creating cycling route planners and mobility analysis software. Right now, he's a teacher at a college

Software developer and data engineer at HeiGIT (heigit.org) since 2016, focused on geospatial analytics and OpenStreetMap data. Contributor to OSHDB, ohsome API, and ohsome-planet tools. Specialized in backend systems using Java and Python. Enthusiastic about scalable data processing, open data, and enabling data-driven insights for global mapping communities.

Robin has been developing software for about 15 years now and has since drifted ever closer towards public transport related topics. He has been analyzing and visualizing public transport and other geospatial data and trying to make stochastic public transport routing usable. Since 2025, he is working at TU Darmstadt on the MOTIS project and has also contributed to the Transitous project.

https://github.com/traines-source

I'm drolbr as a mapper and volunteer to develop software for OpenStreetMap since 2008. Currently I am serving as the treasurer of the OpenStreetMap Foundation. I'm otherwise best known for the software Overpass API. But I'm also interested in mapping for pedestrian routing. In addition, I'm at the moment serving in the Engineering Working Group and as a OSMF board member.

For a day job I'm developing software for public transit. While my employer and our customers profit a lot from OpenStreetMap, my actual job is doing the software for ticket vending.

Rub21( Ruben) has been an active OpenStreetMap contributor for over a decade, mapping and building tools for JOSM and OSM data processing. He is currently working on improving the GPS traces infrastructure in OpenStreetMap, and also helps maintain the infrastructure and tooling behind OpenHistoricalMap. He is part of the LatAm OSM community and has been involved in supporting open mapping projects across the region for many years.

OSM contributor since 2012 and GIS engineer.
After gaining experience in the IT services sector and working at Forcity (SimCity in real life), I joined Geovelo to help with the integration of mapping and route calculators 6 years ago.
I am now Head of the Geodata team, where we centralize and analyze all issues related to bicycle mobility and the geographic data value chain.

Sarah is a long term contributor to OSM. She started mapping in 2008, mostly having fun hiking through the Swiss mountains and mapping all the trails. Then she became increasingly involved with the programming side of OSM. She is now maintainer for waymarkedtrails, pyosmium, osm2pgsql, photon and Nominatim. She makes a living as a free-lance software developer.

With over 20 years of front-line customer information delivery for transport and city networks across the globe, Sergio is a fully paid-up member of the club that still believes in the influential power of a good map. Sergio is currently a Principal Advisor at T-Kartor, where he continues his focus on a well-designed, well-executed information strategies as a key component in any transport or city authority’s relationship with it’s service users.

Good hiker, good skier, bad climber, occasional biker, ex-pilot. More than 50 years in love with national topographic maps, now in a polyamory with OSM topographic maps. Mapping in OSM out of civic duty, as an end user scratching the collective itches of the outdoors community, and with a touch of professional interest. I also have a work life where computer science, software architecture, design thinking, entrepreneurship, innovation management, and public policy have all played a role.

Stefan Keller is Full Professor and Director of the Geometa Lab at the Eastern Switzerland University of Applied Sciences (OST), Switzerland, Campus Rapperswil. He teaches data engineering, database systems and data analytics as well as GISTech. He is involved in open source and open data projects. He is a member of the Swiss PostgreSQL Users Group and the Swiss OpenStreetMap Association, among others.

Senior Software Engineer in Rivian, Sweden. More than 10y I work with C++ with a main focus on performance and optimisations, last 5 out of them in navigation domain (OSM, Valhalla, EV trip planning).

GitHub profile - https://github.com/kinkard
LinkedIn profile - https://www.linkedin.com/in/stefan-kizim

In a free time I play DnD with friends and learning how to play piano.

english

A low-cost RTK explorer for 10 years, I designed the GNSS base stations that are the majority of those used on the Centipede-RTK network. I primarily use the network when collecting photos for Panoramax.

french

Explorateur en RTK low cost depuis 10 ans, j'ai conçu les bases Gnss présentes en majorité sur le réseau Centipede-RTK. J'utilise le réseau principalement lorsque je fais de la collecte de photos pour Panoramax.
Depuis 2024 je suis le président de l'association Centipede-RTK.

Since January 2010, Séverin (SeverinGeo) has been an OSM contributor, implementing programs to create and support OSM communities in the Global South. He has provided OSM and free geomatics training and mapped territories in over 20 countries since 2011, first with HOT and then through Les Libres Géographes, a collective of which he is a founder and manager of the free SDI. Between 2021 and 2024, he was a member of the UN Mappers Crowdsourcing team, particularly overseeing educational activities and content creation for the UN Maps Learning Hub. He volunteers for WeeklyOSM and the OSMF blog.

French PhD student working at the LASTIG lab (Univ Gustave Eiffel, Géodata Paris, IGN, LASTIG, F-77454 Marne-la-Vallée, France).
Passionate by computer science and sandbox games like Minecraft.
I also play tennis regularly for fun, and sometimes in competition.
Maintained a Minecraft server network during 7 years, and now contributing to some open-source projects in the Minecraft ecosystem.

Tobias Augspurger, is an aerospace engineer and atmospheric scientist working to support open-source solutions in climate and energy. He contributes to projects like OpenSustain.tech, an initiative helping surface and connect climate-tech communities, and is involved in collaborative funding and transparency efforts such as OpenClimate.fund. At the Jülich Research Center, he focuses on remote sensing and software development for environmental research. Through Open Energy Transition, he helps improve global open data on power grids to support equitable energy access. Tobias values working with diverse contributors to foster transparency, reduce greenwashing, and enable practical, trustworthy climate action.

Tobias is a freelance software developer and open-source maintainer, with a long-standing passion for open data and OpenStreetMap. Since 2008, he has contributed to OSM in many roles, including mapper, software developer, proposal author, conference speaker and organiser, and former member of the OpenStreetMap Foundation board. Today, his main area of interest is 3D rendering using OSM data, and he maintains the OSM2World project.

I am a irregular contributor to OpenStreetMap since 20 years.
Professionally I am a developer and often work on transportation data, and more specifically with public transit.
I developed tools to be able to use OSM for simple routing algorithms https://github.com/rust-transit/osm4routing2/ and for linear referencing systems https://github.com/OpenRailAssociation/liblrs

Tu-Tho is the lead of the French standardisation group for passenger information and management of mobility services and the co-lead of NeTEx subgroup within CEN. She is also a passionate advocate for IT solutions and standards that are grounded in their responses to the needs of the ecosystem.
Leveraging her multimodal mobility data expertise and her past life as an expatriate in Southeast Asia, she actively contributes to building bridges, finding consensus, and creating convergence between different sectors of the mobility industry.
She strongly believes that the future must be written globally with all learning from each other.

Victor Ayomide Ademoyero is a Geospatial Frontend Engineer with over four years of experience and a Copernicus Master’s student in Digital Earth (CDE) at the University of Salzburg, Austria. He holds a degree in Remote Sensing and Geoscience Information System (RSG), with strong expertise in GIS, Earth Observation, geospatial analysis, and field data collection. He has worked with organizations where he builds scalable, user-focused geospatial applications. His technical expertise includes front-end frameworks, interactive web mapping libraries, spatial data visualization, and open-source geospatial tools.

Vincent Picavet is an applied maths engineer originally. Involved in OpenSource and OpenData movements since the beginning of the 21st century, he founded Oslandia in 2009, providing services for OpenSource GIS in general and particularly around QGIS. Vincent regularly talks at national and international conferences on topics related to Spatial data, Free Software and GIS.

Vitor George is software engineer at Development Seed and maintainer of OSM for Cities, an open-source platform that makes OpenStreetMap data accessible for city planning. With a background in transportation planning and extensive experience building geospatial tools, he has been a contributor to OpenStreetMap and open data initiatives for many years.

Volker is contributing to Free Software as a member of the KDE community since more than two decades. As part of his work on KDE's travel application Itinerary he has implemented OSM indoor rendering and routing components and got involved in the Open Transport community, as a founding member of Transitous and co-organizer of the Open Transport Community Conference.

I am a long time open source advocate and contributor in maps and Rust, founder and a board member of MapLibre. Apart from numerous open source projects, I work at Rivian Volkswagen Tech as a principle engineer leading maps and Rust adaption efforts. Author of Sophox (OSM graph db), Wikipedia maps, API, and graphs.

Studied rescue engineering at TH Köln. Masters Thesis on analysing emergency vehicle trajectory data and generating edge traversal times for emergency vehicle routing. Now living in Tübingen and working in the field of emergency service routing, dispatch and control room software. Also a volunteer firefighter at Feuerwehr Tübingen. Member of vfdb e.V. Referat 7.

GIS engineer on the Tesmo Maps project for the past year. I am passionate about data visualisation and cartographic rendering, with a particular interest in open-source tools and the possibilities they offer for working with OpenStreetMap data. As the OSM specialist within my organisation, I also actively contribute to OpenStreetMap, with a focus on railway data