# Sitian (Nathan) Wang

> Product Designer | AI & LLM Tools @Microsoft Exp | SaaS & Complex Systems

Location: San Jose, California, United States
Profile: https://flows.cv/sitian

I’m a Product Designer (M.S. in Human-Computer Interaction) focused on Enterprise SaaS, complex workflows, and AI/ML product UX. I enjoy turning ambiguous problems into clear systems—mapping end-to-end flows, defining information architecture, and shipping high-fidelity designs that teams can build fast and confidently. 

Recently, I worked on:

Healthcare & internal admin platforms at Tandem Diabetes Care—streamlining distributor management workflows and leading UX for a clinical trials project from concept to first-stage release in 4 months, improving team efficiency 15–20% per week and reducing post-release issues 21–27%. 

AI tooling for prompt engineering at Microsoft—end-to-end design for Prompt Flow in AzureML, driving concept → Public Preview in 6 months (~20% faster than typical cycles), improving task success 72% → 87%, and reducing rework 28% via clear design blueprints and alignment artifacts. 

What I’m best at: workflow optimization, dashboard/admin UX, AI-assisted experiences (LLM workflows), design systems understanding, and cross-functional collaboration with PM/Eng in Agile teams. 

If you’re hiring for Product Designer / UX Designer roles in Enterprise SaaS, AI/ML platforms, admin tools, or workflow-heavy products, I’d love to connect.

## Work Experience
### UX Designer @ Tandem Diabetes Care
Jan 2024 – Jan 2025 | San Diego, California, United States
· Designed an internal admin web application with PM/Engineering, streamlining distributor management workflows and improving operational efficiency. 

· Led UX for a clinical trials initiative from concept to launch; shipped first stage in 4 months and improved trial team efficiency 15–20% per week. 

· Ran user interviews and usability tests; translated findings into wireframes and high-fidelity designs to guide iterative delivery. 

· Partnered cross-functionally to integrate features on schedule, reducing post-release issues by 21–27%.

### Product Designer @ Microsoft
Jan 2022 – Jan 2023
Designed and shipped Prompt Flow (Azure AI) — an enterprise-scale tool for building, evaluating, and deploying AI prompt workflows.



· Led end-to-end design of the canvas editing and evaluation experience, from research through public preview



· Identified core traceability problems through contextual inquiry and expert interviews, shaping the product's information architecture



· Designed the evaluation flow end-to-end, including a mid-project iteration that replaced a multi-environment setup with a guided wizard — reducing cognitive load and lowering entry cost for new users



· Restructured the results and comparison architecture to match users' mental model, enabling side-by-side variant comparison in a single view

### UI/UX Designer @ CARSOME
Jan 2021 – Jan 2022
· Led the end-to-end design process to enhance the user experience of the Customer App, a second-hand car trade platform. Resulting in an impressive 17.8% increase in the overall conversion rate 
· Collaborated with Product Managers to initiate the 0-1 MVP of the B2B end product, the Branch Operator Management App, and successfully delivered the MVP design within a tight 3-week timeframe.
· Defined and established design patterns for the current product, contributing to the development of a comprehensive design system with reusable components.
· Conducted user research, including defining research protocols, planning research activities, and hosting user sessions to gather valuable feedback and insights.

### UI/UX Designer @ Massachusetts General Hospital
Jan 2020 – Jan 2020
· Created low-fidelity wireframes to visualize the product's structure.
· Developed an interactive prototype and conducted usability tests with potential users.
· Implemented usability improvements based on user feedback.
· Produced high-fidelity wireframes for the final design.
Collaborated closely with developers to facilitate the product's implementation.

### Assistant Editor @ SCIENCE CHINA PRESS
Jan 2017 – Jan 2017
Write and proofread science articles, designed web page layout.
Key Activities & Accomplishment:
•	Designed web page layout by using MS Word, Photoshop.
•	Write and proofread science articles, listed articles by specific keywords and categories


## Education
### Master's degree in Human Computer Interaction
Northeastern University

### Bachelor's degree in Digital Communication and Media/Multimedia
Beijing Normal University


## Contact & Social
- LinkedIn: https://linkedin.com/in/sw-uxdesign
- Portfolio: https://uxnathan.work/

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Source: https://flows.cv/sitian
JSON Resume: https://flows.cv/sitian/resume.json
Last updated: 2026-04-13