# Soojin Hwang > AI Product Designer @T-Mobile | MS HCI @UW Location: San Francisco Bay Area, United States Profile: https://flows.cv/soojinhwang Hi I'm Soojin 👋🏻 I’m a Product Designer with 7 years of experience and a multidisciplinary background in visual design, Human-Computer Interaction(HCI), and Artificial Intelligence. My work sits at the intersection of research, AI, and visual craft. I enjoy transforming complex, ambiguous ideas into clear and intuitive product experiences across web and mobile. I’m passionate about collaboration, mentoring, and exploring how emerging technologies can become useful and human in everyday life. ## Work Experience ### Product Designer, AI @ T-Mobile Jan 2023 – Present | 벨뷰, WA Digital Innovation Lab • Lead design and scale multimodal agentic AI experiences (customer support chatbot, chat, voice, UI, prompt systems) across web, iOS, and Android serving millions of users; improving AI accuracy from 60% to 99% through prompt optimization and human-centered evaluation, reduced add-to-cart decision time by 30%, and increased conversion rate by 3x; contributed to 3 pending patents. • Establish the AI evaluation framework and rubric (accuracy, hallucination, task success, UX quality) in close partnership with OpenAI and Google and AI engineers, enabling systematic experimentation and continuous model improvement. • Led the design of location-based consumer products serving 8M+ users annually, including Network Coverage Map and International Roaming, translating complex geospatial and network data into intuitive decision tools at nationwide scale. • Mentor designers and partner cross-functionally (PM, Engineering, UXR, Accessibility, Design Systems, Content, Legal), influencing executive decisions at the Directors/SVP. ### Mentor @ adplist.org Jan 2021 – Present Mentoring about AI/ UX design ### AI UX Instructor @ 패스트캠퍼스 Jan 2024 – Jan 2024 Lecturing about UX design for generative AI at educational platform Fast Campus ### Senior UX Designer @ Foundation Design Jan 2023 – Jan 2023 | Greater Seattle Area · Directed E2E design processes, design strategies, and visual design for creator monetization and community on the iOS platform, ensuring coherent information architecture and user flows. · Create documentation and design specs for delivery to engineers. · Conducted pivotal usability tests, optimizing product designs based on performance KPIs. ### UX Designer @ Foundation Design Jan 2022 – Jan 2023 | Greater Seattle Area ### Organizer · UX Designer @ Google Developers Group Jan 2019 – Jan 2023 · Conducted user research to gain community users' needs and pain points and improved the community · Designed marketing content (e.i. poster, social media post, graphic design) based on Google brand guideline · Mentored designers to teach UX design theories · Organized Artificial Intelligence, Flutter, and Kotlin study groups · Held GDG DevFest 2021/2022 and MC for the event ### Lead UX Designer @ Belk Jan 2023 – Jan 2023 | United States · Pioneered 2023 UX initiatives and culminated in the development of a novel design system · Led the team execution from conception to finalized design specs for diverse digital platforms. · Conveyed design vision and strategy to cross-functional teams such as IT, marketing, and legal ensuring alignment with business objectives. · Championed data-driven design, utilizing rapid prototyping in Figma for effective A/B testing. ### Product Designer @ Meta Jan 2022 – Jan 2022 | Greater Seattle Area · Led E2E design thinking process of VR application for real-time object manipulation bridging virtual and real realms. · Worked on quantitative and qualitative user researches and designed 2D interfaces and 3D models for VR space, Figma rapid prototyping for usability testing and build the product ### Product Designer @ 달램(dallem) Jan 2021 – Jan 2021 · B2B/B2C multi platforms (mobile/web) application redesign for enterprise customer welfare service · Created a management system dashboard for managers and a video conference platform. · Mentored UX design interns such as teaching UX design and giving design feedback ### Lead UX/UI Designer @ Viewmagine Jan 2021 – Jan 2021 AI Image vision/ Autonomous drone DaaS (Drone-as-a-Service) Product · Conducted UX research (secondary research, competitive analysis) · Designed wireframe, GUI, Interaction, and high-fidelity mockups · Created multi-platform for the global market includes web, dashboard, and mobile app ### UX Designer · PM @ Yonsei University Jan 2021 – Jan 2021 | United States Clients - Biofron(Fullerton, CA) and BunnFit · Supervised biochemical and fitness startups to expand their services into the United States market · Formulated design and market solutions based on data from interviews, surveys, heuristic evaluations, QA tests, and usability tests · Created surveys for research through various media platforms to gather feedback on user's ease of use and satisfaction with interfacing on company websites and products ### UX Designer @ Yonsei University Jan 2019 – Jan 2020 | United States ### UX Design Lead @ Mondrian AI Jan 2019 – Jan 2020 | South Korea · Led E2E design from initial ideation to production and post-launch of an enterprise SaaS product that enables engineers to build complex AI applications on one integrated cloud platform. · Conducted user research to set direction and created full branding, visual design, design systems, wireframes, information architectures, and high-fidelity mockups for responsive web. · The company revenue increased by 300%, and using at enterprise organizations such as Samsung, Hyundai, and the State University of New York. · Awarded the top rate of Good Software certificate. The client's AI research efficiency rose from 76% to 91%. ### User Experience Researcher @ Hyundai Motor Company Jan 2019 – Jan 2019 | Seoul, South Korea · Conducted usability and operability evaluations of the entire self-driving car experience based on multiple user scenarios with a concept car. Awarded a patent. · Analyzed and synthesized data to derive solutions that enhance the driving experience of future autonomous vehicles for Hyundai Motors. · Conducted user testing by Virtual Reality (VR) headset ### UX Designer, GEN AI @ IKEA Jan 2019 – Jan 2019 | Sweden · Conducted qualitative and quantitative research · Designed and prototyped 3 solution areas for IKEA’s future concept including a personalized furniture-generating platform, smart furniture, and IoT hardware · Created high-fidelity mockups for web, app, and hardware, UX scenarios, and concept sketches · Designed web and app which used Generative Adversarial Networks (GAN) to create personalized furniture ### UX Designer @ Wellbuy (Acquired by Last Order) Jan 2018 – Jan 2018 | South Korea · Launched a transformative mobile app, connecting customers to surplus food deals, leading to a significant reduction in food waste. · Directed product design, pioneering new service directions anchored in user insights · Achieved a monumental 495% revenue surge and a tenfold subscriber increase. ### Graphic Designer @ SK Jan 2016 – Jan 2017 | Seoul, South Korea ## Education ### Master of Science - MS in Technology Innovation University of Washington ### Master of Science - MS in Design Intelligence Yonsei University ### Artificial Intelligence Stanford Continuing Studies ### MS in Computer Science - M.Cs in Technology Innovation (Connected Devices) UW's Global Innovation Exchange ### Bachelor of Fine Arts - BFA in Visual Communication Design Western University ## Contact & Social - LinkedIn: https://linkedin.com/in/hwangsoojin - Portfolio: https://www.soojinhwang.com/ --- Source: https://flows.cv/soojinhwang JSON Resume: https://flows.cv/soojinhwang/resume.json Last updated: 2026-04-13