If you didn’t want to work for the US DoD at the Defense Academy for Credibility Assessment or weren’t qualified to do so, why not consider working on a deception-related research project at the University of Leicester here in the UK? They are looking for a part-time research associate :
Applications are invited to apply for a part time, fixed term research associate position working with Professor Ray Bull on an EPSRC-funded project regarding investigative interviewing to detect deception. This project is part of a programme of six inter-related research projects in five universities which has the title of D-SCENT: Raising challenges to deception attempts using data scent trails.
Applicants should have, or be about to attain, a PhD in an aspect of psychology relevant to investigative interviewing/detection of deception or (ii) have an MSc in forensic psychology plus at least two years post-MSc experience of research.
More details of the job and how to apply on the Leicester Uni website here. The closing date is 21 September so you have a while to get your application in.