Who Is Uday Ruddarraju, OpenAI's CTO of Compute?

Uday Ruddarraju is an infrastructure engineer serving as the Chief Technology Officer (CTO) of Compute at OpenAI, following his leadership of infrastructure engineering at xAI.

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Sourced reporting from outlets including Entrepreneur India and CryptoBriefing covers his roles at xAI, Robinhood and eBay.

Who Uday Ruddarraju Is

Uday Ruddarraju is OpenAI's Chief Technology Officer of Compute, who previously directed infrastructure engineering at xAI. In this role, he leads the technical organization responsible for the physical and distributed systems that train and operate OpenAI's frontier models.

Most news publications spell his surname as Ruddarraju, while Outlook Business uses the spelling Ruddaraju. Before joining OpenAI in 2025, he led the engineering team at xAI responsible for building Colossus, which Entrepreneur India describes as a supercomputing cluster used to train xAI's Grok models.

• Current Role: Chief Technology Officer of Compute at OpenAI, as of October 2026.
• Organization: OpenAI.
• Known For: Leading the engineering team behind xAI's Colossus cluster and directing OpenAI's compute footprint.
• Education: Bachelor's degree in computer science from Chaitanya Bharathi Institute of Technology and master's degree in computer science from the University of Minnesota.
• In the News For: Promotion to OpenAI Chief Technology Officer of Compute to manage infrastructure across data centers and graphics processing unit (GPU) clusters.

OpenAI Promotion and Compute Responsibilities

Outlets reported in July 2026 that OpenAI had named Uday Ruddarraju Chief Technology Officer of Compute. Coverage published by Yellow.com on July 19, 2026, stated that the promotion occurred after his first year at OpenAI, where he previously led compute operations. Outlook Business and Entrepreneur India, both dated July 20, 2026, reported the announcement, noting that he oversees the hardware systems and facility operations powering frontier models. On October 14, 2026, CryptoBriefing reported that Ruddarraju directs OpenAI's unified infrastructure and compute businesses.

His operational remit at OpenAI spans data center operations, graphics processing unit (GPU) clusters, networking, data storage, and distributed systems. CryptoBriefing adds hardware manufacturing. Yellow.com reported that his team manages the machine learning systems and compute resources used to train GPT-5.6. Outlook Business quotes his LinkedIn post: "My first 12 months at OpenAI have been incredibly rewarding."

Yellow.com reported that he described his team's goal as building "the world's largest compute footprint" and said capacity came online "quickly and reliably". CryptoBriefing describes the role as combining data centers, GPU clusters, and hardware manufacturing into one compute framework. For another OpenAI leadership profile, see Mira Murati.

October 2026 Update: Compute and Infrastructure Leadership Reorganization

Bloomberg reported on October 14, 2026 that OpenAI placed its compute and infrastructure businesses under Uday Ruddarraju, according to The Next Web. TNW reports that Sachin Katti, who had been overseeing infrastructure, leaves that role within weeks and plans to stay on as an adviser.

No primary public statement from OpenAI was read regarding the internal reorganization or Katti's departure.

Infrastructure Engineering at xAI and the Colossus Cluster

Before his move to OpenAI, Uday Ruddarraju served as Head of Infrastructure Engineering at xAI, where he directed the engineering team responsible for the Colossus cluster. Entrepreneur India reported that Colossus operated as a large artificial intelligence supercomputing cluster used to train xAI's Grok models. CryptoBriefing reported that the Colossus deployment exceeded 250,000 GPUs.

Ruddarraju addressed his work at xAI upon leaving the company. Entrepreneur India quoted his LinkedIn farewell statement: "Thank you everyone at xAI for the rare opportunity to help build something truly foundational with Colossus." Outlook Business quoted an additional message from Ruddarraju stating: "Reporting into Elon and learning directly from him was definitely the best part about working at xAI".

None of the outlets cited gives start or end dates for his time at xAI. The AI people to watch list covers other researchers and founders in the news.

Prior Engineering Roles at Robinhood and eBay

Prior to xAI, Ruddarraju worked at Robinhood. Entrepreneur India reported that he served as Senior Director of Engineering and Head of Infrastructure at Robinhood for more than five years, whereas CryptoBriefing stated his tenure at Robinhood lasted nearly six years.

Earlier in his career, Ruddarraju worked at eBay. Published reports give varying durations for his work at eBay. Outlook Business and Yellow.com recorded his employment at eBay from 2013 to 2018. Entrepreneur India reported that he worked at eBay for more than three years, starting as a software engineer before becoming a senior technical lead. CryptoBriefing reported that his tenure at eBay exceeded five years.

Yellow.com reports he interned at Amazon Web Services while he was a student.

Education and Academic Background

Uday Ruddarraju completed his higher education in computer science at institutions in India and the United States. He completed an undergraduate degree in computer science at Chaitanya Bharathi Institute of Technology (CBIT) in Hyderabad, India. Following his undergraduate studies, he pursued graduate education in the United States, earning a master's degree in computer science from the University of Minnesota, with Yellow.com specifying the Twin Cities campus.

Published profiles from Yellow.com and Entrepreneur India do not state the graduation years for his degree programs. Entrepreneur India reported that Ruddarraju is based in Hyderabad and has over a decade of experience building large-scale infrastructure.

Reporting Conflicts and Sourcing Limitations

News accounts of Uday Ruddarraju differ on article dates, tenure lengths and cluster size. Entrepreneur India and Outlook Business published their reports on July 20, 2026, and Yellow.com on July 19, 2026. CryptoBriefing published coverage on October 14, 2026, describing him as established in the role. CryptoBriefing stated that he joined OpenAI in July 2025 as Head of Compute and Infrastructure, aligning with Outlook Business reporting that he departed xAI for OpenAI in 2025.

No named news outlet has published net worth or salary figures for Ruddarraju. In addition, no OpenAI primary source was read for this page, so the announcement's exact wording is not quoted.

• Colossus Cluster Sizing: CryptoBriefing reported that Colossus contained more than 250,000 GPUs, whereas Entrepreneur India describes Colossus as a large cluster without giving a count.
• Robinhood Duration: Entrepreneur India cited his tenure as more than five years, while CryptoBriefing reported nearly six years.
• eBay Employment Span: Outlook Business and Yellow.com stated his dates as 2013 to 2018, Entrepreneur India reported more than three years, and CryptoBriefing reported more than five years.
• Attribution of the compute footprint line: Yellow.com and Entrepreneur India attribute the phrase "world's largest compute footprint" directly to Ruddarraju, while CryptoBriefing presented the concept without attribution.