ソフィー・リニエはフォーリー・アンド・ラードナー法律事務所の顧問弁護士であり、同事務所の政府・公共政策、独占禁止・競争法、国際業務の各部門に所属している。ブリュッセル事務所において欧州連合（EU）競争法・独占禁止法および規制法を担当し、2003年よりブリュッセル弁護士会会員である。

As an EU competition lawyer, she has significant experience advising clients in the transport, energy, pharmaceutical, high-tech, and other sectors on a full range of competition issues. In particular, she assists clients in merger control procedure and also acts as a coordinating counsel with respect to multi-jurisdictional merger control filings. She also has broad experience in reviewing business practices to help clients in areas such as distribution, single-firm conduct, strategic cooperation, and other business relationships with competitors, customers, and other industry participants. She also helps clients developing compliance programs and assists companies with their implementation.

She also provides advice on a broad range of EU regulatory issues, ranging from pharmaceutical products, medical devices, chemicals, and the environment including waste end-of-life products (more particularly electrical and electronic equipment under the WEEE directive) to regulatory issues relating to privacy and security. Her work is focused on helping clients to identify and manage the legal requirements that affect their businesses. She provides guidance through the EU decision-making processes and advises clients on the interpretation, application, and enforcement of EU laws and regulations to ensure compliance across all the EU member states.

Sophie is also a member of the Energy Industry Team, working with the team on issues involving the renewable and other energy sectors in Europe and advising clients on a series of ambitious reforms proposed by the European Green Deal.