Jonathan (@first_day) is a tech-focused jack of all trades and the editor-in-chief of UX Magazine. He is also the author of Effective UI: The Art of Building Great User Experience in Software, published by O'Reilly Media. Through its partnership with UX Magazine, Jonathan is also a senior advisor to Didus, a recruiting and career development company focused on user-centered professionals. As well, Jonathan is Managing Director, Product Strategy & Design for Dapperly, a fashion-oriented software product startup, and he is the Principal of First Day, a small private equity and consulting company. From 2005 to 2009, Jonathan helped found EffectiveUI, a leading UX strategy, design, and development agency focused on web, desktop, and mobile systems.