The Computer Science department at Dalhousie University in Halifax, Nova Scotia is advertising for a person to teach two survey courses "in the undergraduate Computer Science program on social, historical and philosophical perspectives on computers". This likely will include general history (and philosophy) of science depending on who is hired. It will also include teaching in either the Philosophy or History departments depending on the candidate. See the notice and the link to a longer form of the ad in pdf format here: 

https://blogs.dal.ca/academiccareers/2018/04/23/departments-of-philosophy-and-history-limited-term/

If anyone with an HPS background is interested in applying for this position, I'd be happy to talk to them if they contact me privately. I can provide background on the position. The HOST programme at King's College is on the same campus as Dalhousie and we are connected in various academic and administrative ways. Do note that the deadline for job applications is 22 May 2018.