Stephan T. Lavavej joined the Visual C++ Libraries team in January 2007. He works with Dinkumware to maintain Microsoft's C++ Standard Library implementation. He originally joined Microsoft in July 2004, after graduating from Caltech, and worked on Outlook 2007 Search.

His name is pronounced "Steh-fin Lah-wah-wade", or just "STL". His favorite data structures are the vector and the suffix tree, and his favorite algorithms are Huffman coding and the Burrows-Wheeler Transform.