Adam Heimlich is the Co-Founder of Chalice Custom Algorithms.. Adam Heimlich works at Horizon Media leading HX, the agency’s programmatic buying department. Previously, Adam spent seven years at Razorfish and its predecessor, Avenue A. Adam joined Avenue A as a search marketer and headed the department for three years. Designed to make the. programmatic opportunity accessible to any advertiser, HX is 100% cost-transparent and tech-agnostic, pursuing no interests other than client success.