Sandra Leijtens is a skilled software test engineer with experience at Jumbo Supermarkten and Polteq since 2021, specializing in API testing and various test methodologies. Previously, Sandra served as a research analyst at Hycult Biotech from 2006 to 2021, where responsibilities included the development and validation of immunoassays and internal auditing for ISO13485 compliance. Early career roles included trainee positions at PamGene International B.V. and bioMérieux, focusing on assay development and recombinant DNA techniques. Sandra's background as a goldsmith, spanning several years, involved the design and production of jewelry. Sandra holds a Bachelor's degree in Biology and Medical Laboratory Research from Fontys University of Applied Sciences and an MBO in Edelsmeden from Vakschool Schoonhoven.