Diana Nguyen

Product | ex-Blizzard | AI flows | Complex Systems

New York, New York, United States

About

I design AI-assisted systems where users need to understand complex signals, make decisions, and take action with confidence.

Experience

  • Lead Product Designer at JMTD Studio
    Jun 2025 - Present · 1 yr 1 mo

    • Orchestrated medical-grade voice + chat AI assistant targeting <5% leakage via guardrails, safe-response patterns, refusal UX, and human handoff. • Authored 12 in-house LLM UX principles (routing, retrieval behavior, error handling, trust cues) to standardize patterns across products. • Led IA + interaction standards for AIMS training/certification platform (5 modules) and designed booking/logistics workflows for HCP/patient coordination. • Translated AI/ML constraints into practical interaction logic, edge-case documentation, and implementation-ready design guidance for technical and product stakeholders.

  • UX UI Designer at Intersection Co.
    Feb 2023 - Sep 2024 · 1 yr 8 mos

    • Owned city-scale digital experiences: Hudson Yards kiosks (12M+ visitors) + transit info flows (270M+ riders), improving wayfinding, usability, and accessibility. • Designed accessibility-first audio and push-to-talk transit experiences for vision-impaired riders, translating real-time arrival information into clear voice interaction patterns. • Ran 20+ usability tests/field studies and shipped WCAG/ADA-compliant interaction improvements; contributed to shared design system + IA. • Shipped 13 dynamic campaign products contributing to $1.2M revenue in 3–10 day cycles with PM/Eng using hi-fi prototypes + build-ready specs. • Improved Salesforce dashboard satisfaction +37% in 4 weeks by diagnosing workflow issues and delivering redesign recommendations.

  • Product Designer at Freelance
    Oct 2021 - Feb 2023 · 1 yr 5 mos

    • Led product/design strategy for AR city-roaming platform to increase downloads + newsletter signups; delivered mobile/web narrative assets within technical constraints.

  • Product QA Tester at Blizzard Entertainment
    Nov 2019 - Mar 2021 · 1 yr 5 mos

    • Led 3–7 person test teams to identify usability issues and report actionable findings to developers on a 1M+ unit launch (2 weeks).

  • 3D Artist at Victoria and Albert Museum
    Oct 2018 - Nov 2018 · 2 mos

    Created 3D models, shaders, and performed Unity implementation for an immersive underwater experience showcased in the Victoria Albert Museum VR exhibit.