man brukar ju tala om in-house translator, så varför inte ??

Just a few alternatives. Depends on context. Doesn't emphasize the selling bit. :)

Velkin Personnel Services - places employees in office clerical, technical, accounting, and computer jobs.
http://www.velkin.com/ More sites about: Florida > Miami > Recruiting Agencies > Temporary

Liz Frank Personnel Systems - staffing firm specializing in office support, administrative and other support staff.
http://www.lizfrankpersonnel.com
More sites about: Pennsylvania > Bala Cynwyd > Human Resources > Recruiting and Placement

NHI Personnel Corporation - provider of institutional and home care services as well as temporary and permanent office personnel to the health care industry. We service the Southern Ontario Region.
http://www.nhihealthcare.com
More sites about: Health Care Providers > Canada > Ontario

I prefer to use this where possible as it avoids using sales men/women which I think is clumsy especially where the word comes up a lot in a text.