There are currently two open positions for academic staff at the lecturer/senior lecturer level within the Geotechnics Section of the Dept. Civil Engineering at Imperial College London. The first position has an emphasis on experimental soil mechanics, while the second position is for someone with an expertise in ground investigation and / or engineering geology.
Please find the details on these two positions at these weblinks:
https://www.imperial.ac.uk/jobs/description/ENG00640/lecturersenior-lecturer-geotechnics
https://www.imperial.ac.uk/jobs/description/ENG00641/lecturersenior-lecturer-geotechnics