ExtensionEngine has been building Web and mobile software solutions for some of the world’s most dynamic companies since 2000.♦ We are headquartered at the Harvard Innovation Lab in Boston, with an equally amazing engineering campus in Split, Croatia. ♦ We have a team of more than 140 engineers, product managers, designers, and industry experts serving a growing list of clients who demand exceptional software and rich user experiences, delivered both quickly and… Show more ExtensionEngine has been building Web and mobile software solutions for some of the world’s most dynamic companies since 2000.♦ We are headquartered at the Harvard Innovation Lab in Boston, with an equally amazing engineering campus in Split, Croatia. ♦ We have a team of more than 140 engineers, product managers, designers, and industry experts serving a growing list of clients who demand exceptional software and rich user experiences, delivered both quickly and cost-effectively.♦ We are doing amazing things with cool technologies – including web, mobile, touch, gesture control, and data visualization.♦ We’re using these technologies to help clients in their mission to fight disease, preserve the environment, make shopping fun, help kids learn, promote economic health, and deliver information at the speed people need it, among other things.♦ We’re growing fast. We’ve been ranked in the INC 5000 list of fastest growing companies in America three out of the past four years (would have been all four, but we were growing so fast we forgot to apply one year).Our clients include: BB&T, ClearMomentum, CompStudy, Credit.com, Credo Reference, Crump, eHealth Insurance, Energy Points, Equinox Healthcare, Esty Environmental Partners, First Trade Union Bank, FreeGreen, Frontier Strategy Group, Good-Benefits LLC, HealthCare Source, Interbit Data, InvestCorp, J Robert Scott, LodgingEconometrics.com, Mediastream.com, MightyTicket, Millennium Prevention, Inc., Parent School Network, Partners Healthcare (i2B2), PerCent, PHT, ROAM Data, Sample6, ShinyAnt, SilverRail, TEDxBoston, Veritude (Fidelity), Zik Energy Points, and Zmags Show less