She specializes in public procurement law, providing comprehensive services related to tender procedures, which involve preparation and compilation of documents, legal analyses and appeals. Marcelina prepares draft agreements and letters in administrative proceedings, including disputes between beneficiaries of EU funds and relevant institutions. She has several years of experience in legal consulting services for contracting authorities and contractors alike, including their representation before the National Appeals Chamber, which has allowed her to learn about a wide array of problems related to public procurement.