Transforming Complex B2B SaaS into Operational Clarity

Si Thu | Product Designer & UX Researcher

Sydney-based Product Designer with 5+ years of experience across global SaaS, startups, and software agencies. Most recently leading core operational suites (Calendar, Housekeeping, and Billing Systems) at SiteMinder for Little Hotelier. Specialised in high data density, multi-tenant workflows, and AI-assisted prototyping. Co-author of published research on Gen AI interfaces (arXiv:2503.00681).

Work
About
Si Thu - UX Product Designer

From Prompting to Partnering: Rethinking How Humans Interact With Conversational AI

What if ChatGPT could adapt to you?
My latest study explores personalisation and co-creation in LLM interfaces featuring user insights and a prototype that reduces cognitive load and builds trust. Now live on arXiv.

Read The Paper ↗️

Featured Work

Sport tech startup
Stylized green neon logo resembling a lightning bolt on a dark background.

Skillry: Redesigning a Sports Platform for Growth and Efficiency

Redesigned to boost user acquisition by 20% and streamline client-coach interactions, reducing task completion time by 25%. Created a scalable styling guide that enhanced UI consistency by 50% and accelerated team onboarding.

End-to-end product design for a startup focused on user growth and retention.

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Human-resource management system
Stylized DSS logo in blue on white background.

DSS HR: Streamlining Processes with an Accessible In-House Solution

In-house HRMS that saved $3,000 – $5,000 annually by eliminating third-party tools. Led research, prototyping, and design refinement, ensuring accessibility and consistency to enhance internal workflows and usability.

End-to-end product design for a SaaS solution aimed at cost efficiency.

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Testimonials

  • Liam McEvoy

    "Si Thu was a fantastic UX/Product Designer at Skillry. As his manager, I was impressed by his high-quality work, clear reasoning, and infectious passion. He consistently exceeded expectations, and I highly recommend him."

    Liam McEvoy | CEO & Co-Founder of Skillry

  • James Kim

    "Si Thu is an amazing talents and a true joy to work with!""

    James Kim | CEO of DSS

  • Aaron Nieder

    "Si Thu is a skilled designer who delivers high-quality work with impressive speed. His proactive approach, valuable ideas, and data-driven mindset make him a great asset to any team."

    Aaron Nieder | SAP Transformation Architect

Contact

For work-related inquiries, or to grab a coffee or ginger chai, do email me. ☕ / 🍵

Email
sithuomst.st@gmail.com

Phone
(+61) 422 656 686