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© 2026 Lettermark Partners Limited in partnership with the BUILD IN LONDON (NATIONAL) TRUST, a registered social enterprise in England and Wales (No. 17088725).

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Proton London Office - Build in London

Proton photo 1

Proton

ScaleupCybersecuritySaaS

Over 100 million people use Proton to stay private and secure online. Get a free Proton account and take back your privacy.

Locations

London (UK Headquarters)

London

Plan-les-Ouates, Switzerland (Global Headquarters)

Route de la Galaise 32, Plan-les-Ouates, Geneva, 1228, Switzerland

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Team size

200+

Primary sector

Cybersecurity

Location

London

View 12 open roles