hi, I'm
Seraphina Cheng
A Computer Science × Computational Finance & FinTech student at CityU, building small apps that make everyday life a little lighter — habits, money, and self-care.
Dean's Scholar '26
currently shipping apps
Hong Kong · UTC+8
psst — hover things. something might meow.
02 — selected projects
Things I've built and shipped
Penguin Brain
Web + AppWeb + Android · personal productivity
- React + TS
- Kotlin / Compose
- Cloudflare D1
- GitHub sync
03 — journey
Where I've been learning
- Oct 2026 — now
- Sep 2026
- 2026 — now
- 2026 — now
- 2019 — 2025
01 — little wins
Things I'm quietly proud of
- 2026★
- 2025
- 2024
- Yale100%
- UPenn
- 24–26
- 2025Gold
01 — notes & resources
Notes, resources & things I'm learning
Study notes, useful links and small write-ups. Comments welcome.
02 — reflections
Thinking out loud
Books that stayed with me, small lessons, life stuff and notes from trips.
reading cattravel cat
All reflections
05 — anonymous notes
Say anything to Seraphina
No account, no sign-in. Leave it public, or lock it so only Seraphina can read it.
From the wall
06 — contact
Let's talk — internships, projects, or just nerdy ideas.
currently open to
- tutoringSelected tutoring — Math, M2, Economics, Python
- internshipInternships
- collabCollaborations, e.g. start-ups and side projects