After more than six years at Google, Sana Ouji has joined generative AI firm Anthropic.

Ouji, who most recently worked as a data center energy strategic investments & partnerships exec, will join the company's nascent energy team.

In February, Anthropic was one of a number of firms to pledge to cover 100 percent of the cost of grid upgrades needed to interconnect new data centers in the US.

"Thrilled to share that I have joined Anthropic's inaugural energy team, where I will work alongside the brilliant Ariel Horowitz, PhD and Tim Hughes to develop, execute and deliver on a global energy strategy that allows us to responsibly and rapidly scale an ambitious data center portfolio," Ouji said on LinkedIn.

"Looking forward to reconnecting with old and existing partners as I get started!"

Horowitz joined Anthropic in March. She was the deputy director of grid modernization for the US Department of Energy until the department was gutted in April 2025. Most recently, she led market risk and policy analysis for grid-scale energy storage at Eolian.

Hughes moved to Anthropic in February, coming from data center firm Stack Infrastructure, where he was most recently the chief development officer.

Ouji joins a number of former Google employees at the company, most notably Anthropic’s head of data center infrastructure, Winnie Leung, and former Google data center construction lead Brett Rogers. Both hires were previously reported by The Information.

Other, previously unreported, hires from Google include Liwen Mao, a staff data center system architect that is now Anthropic's data center design lead. Similarly, after a decade at Google, Adam Johnson in October became Anthropic's data center electrical lead.

Peter Sarossy, a 20-year Google veteran, in January became a data center security engineering staff member at Anthropic. After 17 years, Zach Miller left Google to become the company's data center operations manager. Scarlett Chen, data center engineer for advanced technology and innovation, is now an Anthropic member of technical staff. Soheil Farshchian, Google data center system architecture lead, is also believed to have joined the company.

Other key hires include data center delivery manager Matt Wanner, who joined in January from Stack. David Lee - who worked at Google until 2021, but has since worked at Microsoft and Nvidia - joined in October as head of data center operations.

The company is hiring for a number of data center roles, including data center portfolio planning & execution lead, senior data center capacity delivery manager, and data center portfolio planning & execution lead.

The build-out of Anthropic's data center team comes as it expanded its compute portfolio, primarily through cloud contracts. The company has major Microsoft, AWS, and Google contracts - with all three hyperscalers Anthropic investors.

In October, Google and Anthropic signed a 1GW+ cloud deal with access up to 1 million tensor processing units (TPUs), Google's AI accelerator chip. This April, Anthropic signed with Broadcom and Google for the supply of 3.5GW-worth of TPUs.

At the same time, Anthropic has pledged to invest $50bn on data centers in the US with Fluidstack. Those same projects are being financially supported by Google.

Despite the buildout, rival OpenAI has claimed that the company made a "strategic misstep to not acquire enough compute [which] is showing up in the product." In an internal memo seen by The Verge, the company said: "Customers feel it through throttling, weaker availability, and a less reliable experience. We saw the exponential compute curve earlier, acted on it faster, and now have a real structural advantage."

Anthropic CEO Dario Amodei in February spoke about the risks of buying too much compute too soon, or too little too late. He warned that if a company is "just off by a year in that rate of growth, or if the growth rate is 5x a year instead of 10x a year, then you go bankrupt."