Rubix Taps Veteran Josh Joshi to Helm 8GW AI Infrastructure Ambition

LONDON, UK – July 28, 2026 – In a move that signals serious intent in the hyper-competitive AI infrastructure market, Rubix Data Centers has appointed industry heavyweight Josh Joshi as its new Chairman. For a company that officially launched just last month, securing a leader of Joshi’s caliber is a significant statement, positioning Rubix not as a speculative startup, but as a formidable new force in the global race to build the physical foundations of artificial intelligence.

The appointment comes as the insatiable demand for AI compute power pushes the digital infrastructure sector into a new era. Joshi himself framed the shift succinctly, stating, “AI represents the next great inflection point: data centers are no longer simply part of the plumbing of the digital economy; they are strategic assets for nations, businesses, and society.” His move to Rubix, a Submer Group company, is a clear bet that this new entity has the strategy and resources to capitalize on this tectonic shift.

A Veteran's Hand on the Tiller

In the high-stakes, capital-intensive world of data center development, experience is the most valuable currency. With nearly three decades in digital infrastructure, Josh Joshi brings a deep reservoir of it. His career is a highlight reel of scaling major European data center platforms. During his tenure as CFO of Interxion, he was instrumental in transforming the company into a market leader before its eventual acquisition by Digital Realty. He played a similar role at Telecity Group, which was later acquired by Equinix, navigating a fiercely competitive landscape.

More recently, his roles as Executive Chairman of AtlasEdge and an Operating Partner at the influential investment firm DigitalBridge have given him a front-row seat to the latest market dynamics, from the rise of edge computing to the overarching strategies of major digital infrastructure investors. This background provides him with a unique trifecta of experience: scaling operations, managing massive capital deployments, and understanding the investment thesis that drives the market. It’s this combination that Rubix CEO John Eland is betting on. “His admirable international track record and valuable experience transforming startups and scaleups into large international businesses will be instrumental to Rubix’s success,” Eland noted.

Joshi’s decision to join Rubix appears rooted in a shared vision that extends beyond constructing buildings. “What particularly attracted me to Rubix is that its ambition extends well beyond building data centers,” he said, emphasizing the importance of creating lasting value and becoming a trusted community partner. This philosophy will be critical as the company embarks on projects that will have significant local and national impact.

The New Arms Race: Securing Land and Power

Rubix is entering an arena defined by an unprecedented arms race for land and, more critically, power. The company's headline-grabbing claim is its control of an initial global portfolio of more than eight gigawatts (8GW) of “development-ready capacity.” This land bank, reportedly distributed with over 5GW in the Americas, 1GW in EMEA, and 2GW in the APAC region, is the company’s opening gambit.

This strategy directly confronts the primary bottleneck for AI growth. While competitors vie for capacity, Rubix appears to have focused on securing the foundational inputs first. The scale of this ambition is staggering. For context, major players like Aligned Data Centers, recently acquired for a reported $40 billion, command a portfolio of around 6.4 GW of operating and planned capacity. Meanwhile, tech giants are making their own colossal plays, such as Microsoft’s reported 3.2 GW Project Camellia in Georgia.

Rubix’s strategy is already taking physical form. In Flix, Spain, its parent, Submer Group, is investing over €1 billion to develop a major AI data center on the site of a former chemical plant. The facility, expected to be operational by late 2027, is planned to have an initial capacity of around 90 megawatts and will be operated for a single, long-term tenant. In the U.S., the company has proposed a hyperscale campus near Ashland, Kentucky, with a potential power draw of up to 2 GW—a figure that represents a significant portion of the entire state's electricity production. While these projects face hurdles, from site remediation to navigating tightening grid access regulations like Spain’s Royal Decree Law 7/2026, they demonstrate a clear and aggressive execution plan.

The Submer Blueprint: A Full-Stack AI Play

The most compelling aspect of Rubix’s strategy may be its position within the broader Submer Group ecosystem. This isn't just another data center developer; it's a key component in a vertically integrated blueprint for AI infrastructure. Submer Group, founded in 2015, built its reputation on pioneering advanced liquid-cooling technologies—a critical solution for managing the intense heat generated by high-density AI processors.

The group has since expanded its vision to create a “full stack” offering that addresses the entire AI value chain. This ecosystem includes Submer’s core cooling technology, the InferX AI cloud business launched in late 2025, and now Rubix, which handles the foundational development of data center campuses. This integration is designed to be a strategic advantage, allowing the group to bridge the gap between AI ambition and the physical reality of its deployment.

By controlling key layers from land and power to cooling and cloud services, the Submer Group aims to solve the structural constraints that plague the industry: power availability, thermal density, and slow deployment speeds. Rubix plans to leverage this synergy to offer accelerated deployment timelines, cutting the typical 24-26 month build cycle down to just 12 months through modular designs and repeatable delivery. This vertically integrated model, which leverages a decade of infrastructure engineering and over 500 MW of deployed liquid-cooled systems, gives Rubix unique insight and control, potentially setting a new standard for how AI infrastructure is built and operated at scale.

With Joshi at the helm, Rubix has a leader with the credibility to secure the massive capital required and the strategic acumen to navigate the complex global buildout. As Joshi himself stated, “Rubix, together with the wider Submer Group, has all the ingredients to become one of the defining AI infrastructure platforms of the next generation.” For investors and market watchers, the journey of turning that 8GW land bank into operational, AI-powering reality will be one of the most critical stories to follow in the coming years.