Warung OS
A point-of-sale built for stalls that run on one phone and a shaky connection. Offline first, thumb first.
Hello, I am
Ayu Prameswari
Product Designer & Illustrator
I design interfaces that behave themselves, then draw the bits that make people remember them.
Yogyakarta, Indonesia
- 7
- years designing
- 40+
- projects shipped
- 12
- long-term clients
About
Seven years in, I still think the best compliment a product can get is “I did not have to think about it”. I work on the unglamorous middle of a product — the flows, the empty states, the error copy — and then put something on top worth looking at.
Most of my work is with small teams shipping their first serious release: marketplaces, tools for small businesses, and the occasional stubborn internal dashboard nobody wanted to own.
- Product design
- Design systems
- Illustration
- Prototyping
- User research
- Art direction
- Motion
- Front-end basics
Selected work
6 projects
Kopi Atlas
Packaging and a 40-piece illustration set for a roaster mapping single-origin beans across the archipelago.
Rute
Route planning for motorbike couriers. Cut the average dispatch from nine taps to three.
Pasar Terang
One component library for a marketplace that had grown four different button styles and no one to blame.
Halo Sekolah
Attendance and reporting for 200 schools, designed for teachers doing admin on a Sunday night.
Tumbuh
A children’s book about a stubborn seed. Thirty-two spreads, two colours, one very patient editor.
What I do
Product design
End-to-end: research, flows, interface, and the design system that keeps it from drifting six months later.
Illustration
Editorial spots, onboarding sets, and brand characters that survive being shrunk to 24 pixels.
Design audits
A hard look at what you already shipped, written up as a ranked list you can actually work through.
Background
-
2023 — now
Senior Product Designer
Kolam Studio
Design lead on two marketplace products and the shared system underneath them.
-
2021 — 2023
Product Designer
Bitwarna
Took a logistics dashboard from spreadsheet replacement to something people opened voluntarily.
-
2019 — 2021
Designer & Illustrator
Freelance
Editorial illustration, brand work, and the first four apps I would now redesign given the chance.
- 2025 Good Design Indonesia — digital product, shortlist
- 2024 Talk: “Designing for one bar of signal”, JogjaConf
- 2023 Tumbuh — national children’s book selection