John Kececioglu is a Professor of Computer Science and the BIO5 Institute at the University of Arizona, which he joined in 2000. John did his PhD with Gene Myers, and his postdoctoral study with David Sankoff and Dan Gusfield.

His research is in applied algorithms, especially for bioinformatics and computational biology, including

Software developed by his group includes

John is a recipient of a National Science Foundation CAREER Award, serves as an Associate Editor for IEEE/ACM Transactions on Computational Biology and Bioinformatics, is on the Editorial Board of Algorithms for Molecular Biology, and is a Faculty Member in the Sequence Analysis Section of Faculty of 1000. He was Program Committee Co-Chair for ACM-BCB 2016, Program Committee Track Co-Chair in Sequence Analysis for ISMB 2011, and Conference Chair for RECOMB 2009. John served as Associate Head of the Department of Computer Science during 2012.

A book coauthored by John and his former PhD student Dan DeBlasio on parameter advising is published by Springer and available on Amazon.

A news article on John and his collaborators' research in computational astronomy appeared on the front page of the Arizona Daily Star (and an artist's conception of their work appears in this comic).