Andrew Hain is based in London, UK, and has been editing OSM for sixteen years with a variety of mapping interests especially including local area mapping on foot. Andrew is a member of the OpenStreetMap Foundation’s Engineering Working Group, and is keen to build up OSM as the best possible map of the whole world.

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.

Anna is a long term OSM contributor and MissingMaps volunteer, currently employed as a Research Fellow at the Alan Turing Institute, London. In this role, she collaborates with HOT - the Humanitarian OpenStreetMap Team, and HeiGit - Heidelberg Institute for Geoinformation Technology, Germany, on assessing the performance of fAIr.
She is also one of the main people behind Maptcha, a cool project that hopefully will take off one day!

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. In his free time he likes to kayak, play board games and map.

Bastian is an interdisciplinary researcher working 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. You can learn more about him and his work at https://tzovar.as

Benjamin Herfort is researcher at HeiGIT and Heidelberg University. In his PhD he has investigated questions of representation and data quality in OpenStreetMap from the perspectives of humanitarian and machine learning-assisted mapping in order to map what is not mapped. In his research and work he is furthermore dealing with the temporal evolution of OpenStreetMap data, MapSwipe and information from social media.

Benjamin works as a product owner at HeiGIT where he is developing open source tools and methods that incorporate geographic information systems for disaster management, humanitarian aid and climate action.

Bright Nejo is a product designer passionate about building intuitive, inclusive, and impactful digital experiences at scale. With over five years of experience designing user-centric digital products across fintech, geospatial technology, open-source tools, and enterprise platforms.

OSM contributor since 2009, founding member of OpenStreetMap France in 2011
I'm currently focused on Panoramax !

Data Coordinator - European Cyclists' Federation

My background is as an embedded software engineer specialising in audio and video products both for consumer and professional applications. Maps were a hobby until 12 months ago when I started working on the Soundscape Android app. The app aims to help people with visual impairment navigate and explore the world and is based on a groundbreaking iOS app.
The app is being developed with the Scottish Tech Army, a group who match up tech industry volunteers with community organisations that are in need tech help.

Geospatial data Engineer passionate about maps, cycling and spending time nature with good friends.

A Super Mapper (Very Active) according to HDYC, mapping things around me since the end of 2010.

Dustin is a software engineer who builds open source tools using OpenStreetMap to improve walking, cycling, and public transit in cities. He runs A/B Street Ltd.

Geospatial Software Engineer.

Portfolio: https://emmanueljolaiya.com

PhD student working on Road data quality in OSM in the University of Heidelberg, GIScience Reearch Group.

I'm 35. 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, maintainer of Osmose-QA, vector tiles, and routing engines.

Frederik is one of the authors of the first book about OSM, he's a frequent guest at SotMs and has co-hosted SotM-EU in Karlsruhe many years ago. He's been on the OSMF board and still is a member of the OSMF Data Working Group. Frederik is one of the directors of Geofabrik but holds this talk in a private capacity.

Gala is an urban data scientist, the uses OSM data to run urban analytics, to better understand places. She is also the convener of Geomob Edinburgh, which she started in 2024.

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.

State of the Map Europe Conference Lead. He has hosted and MC'd several international conferences and hosted "Meet An OSMer" panels. Gregory was a founding board member of OpenStreetMap UK.

Organiser of OSMLondon meet-ups and events. Past board director of HOT. Waning member of Communications Working Group. Waning contributor in general since becoming a father of two!

Jack Gilmore is a software developer with over 6 years of experience working in public sector digital services. Originally from Aberdeen, he graduated with a first-class BSc (Hons) Computing Science and Spanish from the University of Stirling. Jack currently works as a Senior Platform Engineer at NHS Education for Scotland, where he works on secure, cloud-first software solutions that support critical healthcare services. Beyond his professional role, he co-founded Open Data Scotland, advocating for transparent and accessible data publishing. He is also the co-founder of the Dundee Data Meetup, bringing together professionals and enthusiasts to discuss data, technology, and innovation in the Tayside region.

Teaching and research in mathematics and data science. Mapper with a focus on public transport. See https://whz.de/~jef19jdw for more.

Jerry Clough has been interested in maps since the age of 4. His professional background was in scientific research (Embryology, Genetics and Computer Science) and business consultancy. He is an enthusiastic amateur naturalist. OSM has formed a natural nexus for these interests since 2008.

Runs a UK flood risk consultancy, was an OSMUK Director, loves Open Data

Jochen Topf has been active in the OpenStreetMap community for many years as mapper, software developer and community organizer. He is the maintainer of the Osmium framework, created the taginfo site, an active osm2pgsql developer and has his fingers in many other OSM-related software. In his professional live he works as a software developer and consultant in the OSM and GIS world. Since November 2023 he works part-time for the FOSSGIS e.V., the local chapter for Germany of the OpenStreetMap Foundation.

OpenStreetMap contributor since 2012, co-founder of the Belgium OSM Local Chapter, OSMF Board Member 2019-2020.
Wrangling with (geo)data in the government sector since 2009, usually with a link to open data.

Open Source Geospatial Developer

Kurt Schellhase is a software engineer and machine learning expert at Meta. He is passionate about mapping transportation features such as roads, footways, and transit around the world. Based in Seattle (USA), Kurt is a frequent visitor to Europe and enjoys adventuring and “power walking” around the world.

Research associate at Zwickau University of Applied Sciences

Nicole is a total map nerd and loves public transportation maps the best. She also loves community organizing, open source projects, the iD editor, JOSM, and building websites in Hugo.

Nicole has been welcoming and training new mappers with Missing Maps London since 2020. She’s been a HOT voting member since 2022 and has sat on the governance team at MapSwipe since October 2024. In her spare time, she can be found knitting, hiking, going to art museums and film festivals, and hanging out with her beloved dog, Yuki. She currently lives in Hamburg, Germany.

Noon is a programmer; originally from Australia but now living in Edinburgh. He loves reading, maths, is passionate about the climate crisis and loves collaborating with others!

Patrik works as Missing Maps GIS Officer for Doctors without borders (MSF)

Patrik started contributing into OSM thanks to a Missing Maps panel on GIS day event in 2019. Currently based in Prague, Czechia

I am the Data Culture and Community, Manager at the British Red Cross, bridging the gap between data, users and communities, aiming that insight or products are used effectively to mobilise the power of humanity so that people can prepare for, respond to, and recover from crisis. I advise and support British Red Cross International programmes with GIS and data, and coordinate the Missing Maps Project in the British Red Cross. I have been engaged with OSM since 2014, and continue to contribute, and learn from community!

Paul works as a freelance consultant and software developer focused on OpenStreetMap map rendering. He has been an OpenStreetMap developer since 2011 and maintainer of OpenStreetMap Carto since 2013 and has developed map stacks at many companies. He is a maintainer of Street Spirit, a style which comes with the ability to generate Shortbread tiles. He is currently working on vector tiles for the OpenStreetMap Foundation.

Prativa Thapa, a third-year Geomatics Engineering student at Kathmandu University, is the Executive Member of GES, Sole Mapping Lead for 2025 and President of KU YouthMappers. Since 2022, she has excelled in mapping, winning mapathons and earning the OM Guru Advanced Mapper title. She later became a trainer, promoting inclusive and interdisciplinary mapping. In 2025, she solely leads Mapping Week, expanding open mapping at KU. A first-time speaker at SOTM Europe 2025, she will share her leadership journey and Global South perspective. “As we gather at SOTM Europe together, have the power to transform our world through open mapping.”

Professor Lynne Coventry is currently the Director of the CyberQuarter at Abertay University - bringing industry and academia closer together to explore cybersecurity challenges. Her area of expertise is human aspects of cybersecurity putting her interdisciplinary background of psychology, software engineering, and design thinking to good use. Previously she was research director for Northumbria's Multidisciplinary Research Theme: Human and Digital Design.

Quincy is a an American mapper, developer, and traveler from New York. Now an independent freelancer, he previously worked for the OSMF and OSM US on projects such as iD and OpenTrailMap. His current mapping obsessions are scenic drives and canoe trails.

Robert Whittaker has been involved with with OpenStreetMap since signing up as a volunteer mapper in December 2008. He particularly likes mapping countryside features and rights of way, along with high street shops and street furniture. He has written a number of data comparison tools to help flag missing or outdated features to mappers, which are available at https://osm.mathmos.net/ . He was one of the founding directors of OpenStreetMap UK, but left the Board soon after because of other commitments. He was re-elected as a Director in September 2023. In his day job, Robert works as Lecturer in Applied Mathematics at the University of East Anglia. He also has a more general interest in Open Data and government transparency.

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

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.

I'm a passionate Geomatics Engineer, OpenStreetMap contributor and community builder. I love building maps and solving community problems by using my geospatial knowledge. I’m a strong believer that open data brings creativity, innovation and freedom to society. I evangelize open data initiatives and develop the OSM community growth strategies for Türkiye. Currently, I’m working as Project Manager at Meta’s Mapping team and based in London, United Kingdom.

Sam leads the disaster response program at Humanitarian OpenStreetMap Team (HOT).

Sam first started editing OpenStreetMap in 2015 by taking part in Missing Maps university events in Edinburgh. In 2018 Sam completed a Masters in Geospatial Analysis at University College London and then launched into a mapping career. Sam lives in Madrid, Spain.

Sarah has been active in OpenStreetMap for more than a decade. She's followed many hiking paths to get them on the map and maintains waymarkedtrails.org. She works as a freelancer these days developing software for OpenStreetMap like the geocoders Nominatim and Photon.

Sebastian is CTO at Sozialhelden, a German non-profit that focuses on human-rights. The team is known for Wheelmap.org, an international map for wheelchair accessibility powered by OSM.

Sozialhelden e.V. supports local governments, international organizations, and businesses. It provides tools to measure local policy impact, found and organize local mapping communities, to improve mobility in public transit, and to efficiently remove barriers in the physical world.

Hailing from Montréal (Tiohtià:ke), Sophia is the National GIS Officer for Community Mapping at the Canadian Red Cross, where she leads initiatives spanning Missing Maps, open data integration, geospatial data readiness, volunteer engagement, and partner capacity building. Working at the intersection of people, place, and data, she draws on training in physical geography, geomatics engineering, urban planning and sociology to advance inclusive, mixed-methods mapping that strengthens humanitarian decision-making and community resilience.

I am an engineering manager at Mapbox, leading a data engineering team working with OpenStreetMap data on a daily basis. I am a map & data geek myself and been running #30DayMapChallenge on social media for the last 6 years.