Josh Clark is founder of Big Medi­um, a design agency spe­cial­iz­ing in con­nect­ed devices, mobile expe­ri­ences, and respon­sive web design.

His clients include Sam­sung, Time Inc, Exxon­Mo­bil, About.com, TechCrunch, Enter­tain­ment Week­ly, eBay, O’Reilly Media, and many oth­ers. Josh has writ­ten sev­er­al books, includ­ing Design­ing for Touch (A Book Apart, 2015) and Tap­wor­thy: Design­ing Great iPhone Apps (O’Reilly, 2010). He speaks around the world about what’s next for dig­i­tal interfaces.

Before the inter­net swal­lowed him up, Josh was a pro­duc­er of nation­al PBS pro­grams at Boston’s WGBH. He shared his three words of Russ­ian with Mikhail Gor­bachev, strolled the ranch with Nan­cy Rea­gan, hob­nobbed with Rock­e­fellers, and wrote triv­ia ques­tions for a prime­time game show. In 1996, he cre­at­ed the uber­pop­u­lar “Couch-to-5K” (C25K) run­ning pro­gram, which has helped mil­lions of skep­ti­cal would-be exer­cis­ers take up jog­ging. (His mot­to is the same for fit­ness as it is for soft­ware user expe­ri­ence: no pain, no pain.)