trevarthenToby Trevarthen, a tech-savvy sales and business development pro who runs Spatial Shift, is moving to San Francisco tech PR specialist Spark in October as chief narrative officer, a new post.

Spark chief Alan Soucy said Trevarthen helped the firm develop new service offerings over the past year as it expanded its traditional PR base to marketing. It also acquired social media marketing shop SocialArc last year.

Trevarthan will consult with Spark over the next month as he winds down his client work with Spatial Shift.

He was previously VP of business solutions and development for AOL, and director of corporate sales and marketing ror Time Inc.