We would like to advertise the opening of the following two Post-Doctoral positions in QCD and collider phenomenology at the University of Oxford: - https://academicjobsonline.org/ajo/jobs/17498 . The successful candidate, under the supervision of Dr. Fabrizio Caola, will conduct research on higher order calculations and Higgs phenomenology at colliders. The position is available for 2 years, with the possibility of extension for 1 further year; applyherehttps://my.corehr.com/pls/uoxrecruit/erq_jobspec_details_form.jobspec?p _id=148308 . - https://academicjobsonline.org/ajo/jobs/17497 . The successful candidate, under the supervision of Dr. Lorenzo Tancredi, will conduct research on scattering amplitudes, multi-loop calculations and precision QCD at colliders. The position is available for 2 years, with the possibility of extension for 1 further year; applyhere https://my.corehr.com/pls/uoxrecruit/erq_jobspec_details_form.jobspec? p_id=148307 . For each position, the applicant would need to provide a CV (including a list of publications) and a brief statement, and arrange for three reference letters to be sent to PTreferences@physics.ox.ac.uk before the deadline. Documents submitted should be in PDF format and use the naming convention: APPLICANT SURNAME, FORENAME - REFEREE SURNAME,FORENAMEā€. Each candidate would need to apply for all the positions they are interested in. If they apply to both positions, it is enough to have the reference letters sent once. Only applications received before midday (UK time) of Monday 7 December 2020 can be considered. We would be grateful if you could share this information with any person you may think could be interested.