Angela (ChiehNi) Yang

MINA AI · San Francisco, CA (Remote)

• Sole UX designer at an early-stage AI marketplace startup for mothers in San Francisco; end-to-end product design for sustainability-focused buy/sell/exchange and community.
• Collaborated with product and engineering in sprint planning; translated roadmap into user flows, wireframes, and prototypes. Used PostHog and qualitative feedback to redesign checkout; increased completed listings by ~30%.
• Led design of Parenting Copilot and Photo-to-Publish (AI listing workflow: titles, descriptions, price suggestions from photos), reducing listing time from ~3–5 minutes and balancing AI automation with user control.
• Proposed free-item community exchange for lower-income families. Built component library and Figma specs for 8 engineers; detailed handoff for AI listings, messaging, and transactions.

Turn Cloud Technology Service Taiwan · Taipei, Taiwan

• End-to-end UX for Taiwan Ministry Invoice App (nationwide public service); redesigned auth, clarified login terminology, added biometric login — login success 68% → 92%.
• 30+ user research sessions (focus groups, 1:1) across teenagers, seniors, foreigners, visually impaired; journey maps, personas, functional maps, prototypes for government stakeholder approval.
• Multi-mode UI for different user groups; WCAG and Taiwan Ministry of Digital Affairs certification support.
• Consumer mobile and internal government dashboards; 50+ component design system (iOS guidelines); Baskin-Robbins Taiwan membership platform (points, vouchers, POS).

YK Labs · Los Angeles, CA (Remote)

• Sole UX designer for PerfectInterview.ai (AI mock interview platform). Heuristic eval and usability testing; redesigned onboarding — full mock interview completion +35%. Launched marketing site in Framer.