An in-house SEO specialist, in SEO terminology, is a professional who works directly for a website. Editorial or e-commerce websites that employ one or more in-house SEO specialists are generally large-scale sites where the financial stakes associated with organic search justify having an in-house SEO expert. Depending on the circumstances, the in-house SEO specialist may be responsible for the organic search engine optimization of a single site or a group of sites belonging to the same entity. Working closely with the marketing department and the technical or IT manager, the in-house SEO specialist performs their duties as an integral part of the website’s internal team.