Product Case Studies

I lead products that simplify complex systems, deliver measurable outcomes, and scale to millions of users. My work spans fintech, AI-driven insights, developer platforms, and enterprise healthcare systems. Each case study highlights how I frame problems, uncover insights, define strategy, collaborate across cross-functional teams, and drive execution from concept to launch.

Portfolio

Selected product case studies focused on platform scale, user impact, and cross-functional execution.

Modernizing API developer experience for global fintech adoption

Led a multi-year modernization of the Visa Developer Platform, redesigning sandbox environments, onboarding flows, and documentation used by millions of developers globally to improve API usability, reliability, and partner integration at scale.
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Transforming healthcare workflows with intuitive digital tooling

Redesigned critical Epic EMR workflows across multi-specialty care teams, reducing clinical friction, improving documentation efficiency, and streamlining patient workflows in high-volume healthcare environments.
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AI Behavioral Insights Platform (Concept & Prototype)

Designed and prototyped a 0→1 AI-driven behavioral insights platform that interprets multimodal user signals (voice, text, behavioral patterns) to anticipate needs, surface insights, and reduce user friction.
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Get in Touch

If you’d like to connect about product leadership roles, collaborations, advising, or speaking opportunities, feel free to reach out using the form below.
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Email:
hello@dianahart.co
Location:
Bay Area, CA
Connect on LinkedIn:
Diana Hart
Senior Product Leader | Platforms, Payments & AI
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