Since 2000, Butler works at the NIST, first as project leader and since 2008 as group leader of the Applied Genetics Group. In 2013 he was promoted to Special Assistant to the Director for Forensic Science, NIST Office of Special Programs.[2]
He co-chaired the National Commission of Forensic Sciences (NCFS) invoked by the Attorney General in 2013, to enhance the practice and improve the reliability of forensic science.[5] The NCFS was terminated on April 23, 2017, following the presidential administration change and has published a business document both reflecting on the work done and the future work ahead.[6]
Butler has written several widely recognized textbooks on forensic DNA profiling[7][8][9][10][11]
covering all aspects of the underlying molecular genetic methods, the application to forensic casework and the biostatistical interpretation of results.[12] He received the Scientific Prize of the International Society for Forensic Genetics in 2003.[13]
Board memberships and committees
Since 2000: Scientific Working Group on DNA Analysis Methods (SWGDAM)[14][15]
^Butler, J. M.; Li, J.; Shaler, T. A.; Monforte, J. A.; Becker, C. H. (1998). "Reliable genotyping of short tandem repeat loci without an allelic ladder using time-of-flight mass spectrometry". International Journal of Legal Medicine. 112 (1): 45–49. doi:10.1007/s004140050197. ISSN0937-9827. PMID9932742. S2CID13672044.
^Butler, J.M. (2001). Forensic DNA Typing: Biology and Technology behind STR Markers. London: Academic Press. p. 335. ISBN978-0121479510.
^Butler, J.M. (2005). Forensic DNA Typing: Biology, Technology, and Genetics of STR Markers (2nd ed.). New York: Elsevier Academic Press. p. 688. ISBN978-0121479527.
^Butler, J.M. (2010). Fundamentals of Forensic DNA Typing. San Diego: Elsevier Academic Press. p. 520. ISBN978-0123749994.
^Butler, J.M. (2012). Advanced Topics in Forensic DNA Typing: Methodology. San Diego: Elsevier Academic Press. p. 704. ISBN978-0123745132.
^Butler, J.M. (2015). Advanced Topics in Forensic DNA Typing: Interpretation. San Diego: Elsevier Academic Press. p. 608. ISBN978-0124052130.