Sofie is a legal specialist commercial transactions particularly in the tech and hightech sectors.  She advises data driven businesses, accelerators, social ventures, start-ups, scale-ups and mature business, joint research and exploitation projects.

She was US attorney commercial transactions in New York City, with Paul Weiss, and later moved to Australia, where she specialised in commercial transactions in tech and worked her way up the ranks to become partner with a large law firm and General Counsel of a listed telecommunications company.

Sofie returned  to The Netherlands, joined NautaDutilh and later continued her practice under the name of Van Londen Advocatuur.

Sofie grew up in The Hague and completed grammar school there. She studied and graduated law school  with a masters in Leiden and went to New York City for an additional masters at Columbia Law School, on a full-tuition waiver based on her results in Leiden.