How we Develop and Maintain a Modern Python Service at Mozilla: Merino as Example

Tadas (Taddes) Korris is a software engineer at Mozilla who works in the Contextual Services team for Firefox, where he writes and maintains code that millions of users use daily. His team helps provide users valuable suggestions to make the browsing experience better while maintaining privacy. He strongly advocates for online privacy and security, with expertise in developing secure software throughout its lifecycle. He has the Security+ certification and is actively working towards several other certifications to develop his skills in security engineering.

Tadas was born to a Lithuanian-Canadian family in Toronto and grew up in Edmonton. His family maintained close cultural ties to the local Lithuanian community and Tadas learned to speak Lithuanian and participated in cultural activities.

His professional life began as a professional classical musician, attending the Manhattan School of Music in New York City for his Bachelor’s and Maser’s Degrees. He then attained a diploma from the University of North Carolina in Web and Software development in 2018 and joined Passport, a tech and transportation company. He joined Mozilla in 2022 and retains musical ties as a regular substitute musician with the Charlotte, North Carolina and Charleston Symphonies.