“GDG DEVFEST 2017 “ are events showcasing the latest developer products and platforms from Google to help you quickly develop high quality apps, grow and retain an active user base, and tap into tools to earn more. This event was the Fifth event held by GDG Surabaya. GDG DEVFEST 2017 was held on Saturday,November 18th 2017 at iSTTS,E-Building. Attended by 250 Fresh Graduate Developers,Professional Developers, and college students. Many Google Developer Experts like Andrew Kurniadi, Ibnu Sina Wardy, Sidiq Permana, Dennis Alund, Yohan Totting, Frans Siswanto and Guest star, Rendra toro as CTO from OLX Indonesia.