


Employees at OXIO rank Nicolas Girard in the Bottom 10% of CEOs in New York. Comparatively, employees at T-Mobile rank Mike Sievert in the Top 25% of CEOs in Seattle. Employees rate their CEO differently based on the frequency of interaction, ability to affect company culture, and drive measurable results.

CEO of OXIO
BIO: CEO/Founder at OXIO - OXIO built the platform to reinvent the asset-light carrier model for brands to natively offer wireless connectivity to their users and customers. Previously, I was the Founder, President & COO at Attila Technologies, where I led the development and business strategy of our breakthrough wireless network aggregation technology — pioneers in the HetNet and seamless WiFi offloading fields. Recipient of the New Jersey Inventor Hall of Fame, Inventor of the Year Award - 2010 Recipient of the Thomas Alva Edison Patent Award - 2010

CEO of T-Mobile
BIO: Mike Sievert is president and chief executive officer of T-Mobile and is a member of T-Mobile’s Board of Directors. Mike leads a customer-crazed team of disruptors and innovators, working tirelessly over the last eight years to change the rules of wireless, resulting in T-Mobile becoming the fastest-growing company in the industry. He most recently served as president and chief operating officer of T-Mobile. As CEO, Mike is responsible for leading T-Mobile into the 5G future as it combines operations with Sprint to supercharge the successful Un-carrier strategy. His focus is on ensuring that T-Mobile is the fastest growing company in its space, with the best network and best experiences, delivered by the best team. To do this, Mike and team are all about unlocking the potential of the combined companies’ increased scale, which is expected to result in over $43 billion in synergies, enabling lower costs and the ability to deliver even more to customers, at lower prices. A centerpiece of that focus is building the world’s best 5G network—with massive increases in network capacity and 5G coverage. Every day, Mike’s priority is on cultivating T-Mobile’s culture and building a company that is world-famous for putting customers first, treating them right, and changing the rules in their favor—all with one simple goal: creating the most loved brand in the history of the telecom industry.

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Women at T-Mobile rated their CEO an A+

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Diverse Employees at T-Mobile rated their CEO an A+

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