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I lead large-scale product and technology organizations focused on advancing the strategy, systems, and science behind Amazon’s global advertising business. My work spans applied science, machine learning, distributed systems, and monetization — with a focus on delivering business-critical outcomes at global scale.
I oversee a portfolio of initiatives executed by multiple cross-functional 2-pizza teams across product, engineering, and applied science. My organization owns Amazon’s largest sponsored ads delivery system, serving billions of ads daily, and one of its most advanced data platforms — processing tens of millions of keys per second and hundreds of terabytes of data.
I drive strategy and execution for Amazon Ads’ creative localization and multilingual platforms, generating localized content and rich media creative (video, images, audio, and text) in WW languages for over 2 million advertisers, utilizing LLMs, Diffusion, and other neural net based models. These systems are deeply integrated across Sponsored Ads and DSP to drive automatic creative generation with global coverage, and high relevance and performance. I lead development for various agentic systems like linguistic agents for language checks and quality assurance. Lastly, I lead international expansion for Sponsored Ads, Streaming TV Ads, and Amazon DSP (100+ launched to date), and own monetization strategy and systems for Amazon DSP fee pricing.
My work influences multi-org roadmaps and senior SVP and S-team leadership direction, grounded in a strong foundation of technical leadership, operational depth, and long-term product vision. 
At Got-It AI, Joyo is involved in data design and engineering for conversational SQL enabling you to chat with your data and get answers. At Bash Gaming (formerly BitRhymes, the maker of top-grossing Bingo Bash game on iOS, Android, and Facebook), Joyo was responsible for monetization and data engineering and analytics. Bash Gaming is now part of GSN family. At Tandem Entrepreneurs, Joyo was a Principal and Managing Entrepreneur overseeing technology and engineering of Tandem's portfolio companies. Learn more at http://bashgaming.com, http://gsn.com and https://tandemcap.com. At personal level, Joyo is an active angel investor and advisor - learn more at https://angel.co/joyowijaya.
Prior to founding Tandem Entrepreneurs, at Entrust, Joyo is responsible for the Entrust TransactionGuard platform, architecture and development. Prior to Entrust, at Business Signatures (which was acquired by Entrust), Joyo is responsible for the Online Customer Intent Processor platform, architecture and development. Prior to Business Signatures, Joyo was the chief architect in the development group at Webvan where he managed development initiatives for line-of-business applications, and experienced firsthand the need for "customer intent" monitoring of an online channel platform. Joyo held senior and director level positions in software development at Oracle focusing on areas such as data caching and SQL querying for Oracle 6, 7 and 8i.
Joyo holds a B.S. degree in computer science from University of California at San Diego and a M.S. degree in computer science from Stanford University.
Specialties: Scalable server architecture, data modelling and engineering, API design, distributed architecture, SQL 
