We are a focused team with decades of mobile and online specific experience

OpenBack solves many of the problems the team has had with push notifications in the past when running their own mobile app based businesses.

Some of the OpenBack Team

David Shackleton


David Shackleton is a co-founder of OpenBack, the only mobile engagement platform with smart push notifications and device side decisions. David also co-founded Ding, the largest international top-up platform which launched in 2006 and delivers a top-up every second, across more than 130 countries. David most recently served as CEO when the business employed over 220 people around the world with annual revenues in excess of $500m from Ding.com, mobile apps and from over 600,000 retail stores globally. Prior to Ding, David was a management consultant with the Monitor Group in the US, working in Boston and New York. David is an alumnus of Trinity College Dublin, where he holds a degree in Computer & Electronic Engineering.

Christian Ryder


Christian Ryder is a co-founder of OpenBack, the world’s leading user first push notification platform. Christian is a skilled mobile technologist who has repeatedly worked on ground breaking technologies for leading companies including Ericsson and Elavon as well as his own initiatives. Christian holds a degree in commercial software development and his depth of technical experience and leadership has enabled the unlocking of user centric notifications that appear simple to the app and user.

Ray Nolan

Non-Executive Director

Ray Nolan is a serial tech entrepreneur from Dublin and currently the Founder & President of XSellCo. He was the creator of Hostelworld, Coretime, xSellco and also chaired Skyscanner, Asavie, WhatClinic and many other successful online businesses.

Nicolas Pabion

Engineering Lead

B.S., Computer Engineering from Georgia Tech, US; software engineer @ Altera, then senior software engineer in the bay area developing the core OS for the Palm Pilot which later become webOS whose core still runs on LG smart TV’s around the world.

Grant Nishita

Business Development

B.S., Marketing from University of Nevada-Reno, US; sales development @ Innotas, a leading cloud solution for project portfolio management across a whole organisation; then marketing & operations @ Zipjet, an on-demand dry cleaning and laundry service launching in Dublin. Joined OpenBack in Dublin then after 4 months moved back to start US presence.