He received his Ph.D. at Columbia University in 1998 under professor Norman Christ for his work in lattice gauge theory and on the QCDSP supercomputer project.

For this, Kaehler, along with Norman Christ, Robert Mawhinney, and Pavlos Vranas were awarded the Gordon Bell Prize in 1998.

In the 2005 DARPA Grand Challenge, Kaehler was on Stanford's winning team with Sebastian Thrun, Mike Montemerolo, Gary Bradski and others.

[4] Originally published in 2006, Kaehler's book Learning OpenCV (O'Reilly) serves as an introduction to the library and its use.

[5] Kaehler was Vice President of Special Projects at Magic Leap, Inc., a startup company that raised over $1.4Bn in venture funding from 2014 to 2016.