Sonja Heinonen


About Sonja

Sonja specializes in data protection and corporate advisory. She advises clients on a variety of data protection matters and corporate & contract law issues. In addition, she assists both domestic and international clients in various business fields in M&A, with an emphasis on data protection compliance issues and corporate & contract law.

Sonja joined Procopé & Hornborg as an Associate upon her graduation in 2021 after working at the firm as a Senior Trainee for several years. Sonja has gained experience from working in law firms and as a Secondee Data Protection Officer in a significant Finnish electricity company.


Procopé & Hornborg, Associate 2021-
Helen, Legal Counsel (secondee) 2021-2022


Master of Laws, University of Helsinki 2021
Exchange studies, Luiss Guido Carli University 2020


International Association of Young Lawyers
Lawyers Associated Worldwide
Association of Finnish Lawyers

Working languages

  • English
  • Finnish
  • Swedish