Executive Team

The Executive Team of Globalgig has well over 100 years of experience in telecommunications bringing together the key strengths of technical, operational and executional knowledge required to bring revolutionary products and services to market.

Globalgig was co-founded by Mark Castle in 2008 with a business model of providing leisure and corporate travellers with a convenient method of accessing mobile services globally. Globalgig’s services eliminated the need to pay extortionate roaming fees, finding and having to use poor performing, unsecured public Wi-Fi networks, or having to hunt for local SIM solutions.

iGEM was founded by Ernest Cunningham and Greg Casey in early 2016 to provide a comprehensive suite of mobility and connectivity services to multinational enterprises and acquired Globalgig in July 2016 for its mobility service and Velis4 in October 2016 for its VoIP services.

Ernest Cunningham

Chief Executive Officer

Ernest was the Founder and CEO of One Source Networks, one of Inc. Magazine’s Top 10 Fastest Growing Companies which grew from $0 to $100 million in eight years before being acquired by GTT Communications, Inc. (NYSE: GTT) in 2015. Previously Ernest held senior executive positions with Broadwing and Level 3 Communications with primary responsibility for National Accounts and Wholesale Market programs.  Ernest also spearheads a multimillion dollar real estate holding and management company.


Jim Tipton

Chief Financial Officer

Jim brings over 25 years of experience in finance executive roles including have led merger and acquisition activities on the buy and sell side, raising over half a billion dollars in the process.  As CFO of One Source Networks, Jim oversaw the profitable growth and ultimate sale of the business to GTT at the end of 2015.  Prior to this, Jim held key positions with Moxie Software (formally nGenera), OnFiber Communications and ConnectSouth Communications having started his career with Pricewaterhouse Coopers.


Greg Casey

Chief Revenue Officer (Americas)

As co-founder of iGEM, Greg brings over 35 years’ experience in telecommunications having worked most recently with Ernest at One Source Networks.  Greg previously founded Texas Energy Network which was the first provider of LTE service to the energy industry with a 50,000 square mile network across the Texas oilfields providing service to Shell, Occidental Petroleum, Anadarko and others. Prior to this Greg was EVP at Qwest Communications before it became Centurylink providing service to the likes of AT&T, Verizon, C&W and MCI Worldcom.


Mark Castle

Chief Revenue Officer (EMEA)

Mark was co-founder of Globalgig and has over 20 years’ experience in the mobile telecommunications industry. He was key to many of the commercial, technological and strategic directions of Globalgig and remains responsible under the new iGEM ownership for all commercial aspects within EMEA.

Previously Mark has held senior positions in the SIM industry with Sagem Orga (now Safran Morpho) and Giesecke & Devrient (G&D) including working in the UK, Middle East and India


Anthony Jett

Chief Operating Officer

Anthony brings more than 20 years’ experience in telecommunications and related fields having held CEO positions in multiple technology companies focusing on service and hardware delivery.  Anthony was the co-founder of Velis4, having spent the past 10 years building the company through organic growth and acquisitions before it was acquired by Globalgig in 2016. Anthony also invests his time working with several not-for-profit organizations where he also holds board positions.


Jennifer Mao

Chief Marketing Officer

Bringing over 25 years of marketing and industry experience, Jennifer has held senior executive positions providing leadership in the areas of marketing strategy, communications, channel marketing, product management and public/analyst relations.  Most recently, Jennifer was the executive vice president of marketing for Alpheus Communications.  Prior to this, Jennifer held marketing leadership positions at Airband Communications, Sage Telecom, and GlobeRanger Corporation.


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