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4th International Open Data Conference
avatar for Siem Vaessen

Siem Vaessen

Zimmerman & Zimmerman
Title proposal: Open data for development and humanitarian action.

Biography: Mr. Vaessen has been working with open data and collection management since 1993. He started his career at the photo agency ABC Press based in Amsterdam, The Netherlands. He continued working as a photo journalist covering the conflict in Pakistani Kashmir and the UN referendum in Dili, East Timor in 1999.

Currently he serves as CEO at Zimmerman & Zimmerman, where he also leads the IATI technical efforts for the open-source data engine OIPA and runs point on the IATI Studio initiative, the do it yourself data platform, enabling users to visualise all open data published to the IATI Registry.