As an attorney-at-law, Isabelle Häner advises and litigates on behalf of public and private sector entities as well as private individuals in administrative law matters. She has a broad range of expertise, in particular in the areas of public procedural law, the principle of publicity, mixed-economy task fulfilment, including public procurement law, state and municipal law, construction, planning and environmental law, infrastructure law and energy law. She accompanies and represents clients in administrative proceedings as well as before the cantonal administrative courts and the Federal Administrative Court and the Federal Supreme Court. With her scientific background, she also drafts well-founded legal opinions.