At Liverpool Street Bauer will install diaphragm walling and remove a number of large diameter existing piles.
Work will also include installation of a number of geothermal energy loops to the cages of the diaphragm wall with the contract expected to take eight months to complete.
The Whitechapel job will take seven months and involved installing a diaphragm wall for the circular Cambridge Heath shaft plus the removal of existing large diameter piles at the Durward Street shaft.