Tetelbaum led design methodology and automation teams in LSI Corporation, Silicon Graphics (SGI), and Zycad Corporations.Currently, he is President and CEO of Abelite Design Automation, Inc.

Alexander Tetelbaum was selected for inclusion in Who's Who in the World, Men of Achievement, Who's Who in Technology, Who's Who in American Education, 5000 Personalities of the World, Who's Who in Science and Engineering, The International Directory of Distinguished Leadership, Longman Reference on Research Directories.