University of Waterloo
Andy L. JonesResearcher
Anthropic
Engineer-researcher
via Anthropic
Engineer · Executive · Researcher
Marcus Fontoura
MF
Member of Technical Staff at Anthropic
Fontoura shaped Azure across two Microsoft tenures, serving as chief architect for Azure Compute, leading its efficiency work, and later returning as Technical Fellow and CTO of Azure Core. After senior leadership roles, he joined Anthropic in June 2026 for hands-on AI infrastructure work. He also led engineering as Stone's CTO.
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Background
Current role
Member of Technical Staff Jun 2026-presentAnthropic
AnthropicPreviously
Jan 2025-Jun 2026Technical Fellow and CTO, Azure Core, 
Microsoft
MicrosoftJun 2022-Jan 2025CTO and Head of Engineering, Stone
2013-2022Technical Fellow and Corporate Vice President; Chief Architect, Azure Compute, Microsoft
Microsoft2011-2013Staff Research Scientist, 
Google
Google2005-2010Principal Research Scientist, 
Yahoo
Yahoo2000-2005Research Staff Member, IBM Research
1999-2000Postdoctoral Researcher, 
Princeton University
Princeton UniversityAbout this data
Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.
Last editorial review: August 18, 2026