walter lim is a designer
He designs useful software and builds silly things
His work has been featured in the following media - see more
Commercial Work
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Watchful
Sep 2024 → Sep 2026
Designing and building privacy-preserving, real-time physical security software used by monitoring agents around the world to catch criminals.
WebPhysical SecurityProduct Design+5
Samsung Electronics NZ / Cheil NZ
Aug 2020 → Nov 2020
Design system and process improvements that led to a 64% increase in user traffic
WebUX ResearchDesign Systems+6
Cin7
Nov 2020 → Sep 2022
System usability improvements that empower 8,000+ businesses to transact over $2 billion USD every month
WebAndroidDesignOps+7
Swiftly
Mar 2020 → Feb 2023
Building Ecommerce software that enabled 1,200+ small local stores to sell $700,000+ NZD in goods online
WebUX ResearchProduct Design+6
Side Projects
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Vaxx
Sep 2021
Worked with the New Zealand Ministry of Health to help 99,000+ people get vaccinated against COVID-19
WebOpen SourceUX Research+4
Eight Dollars
Dec 2022
Protecting 20,000+ users from scams on Twitter with a chrome extension.
WebTwitter APIChrome Extension+3
Tax Receipt
May 2023
Making it easier for 6,000+ people to understand how taxes were spent relative to their income
WebTaxesProduct Design+5
changelog
2026
Game-style patch notes for New Zealand law. A monthly, plain-English update on which new laws and proposals will actually change your life.
WebPublic ServiceAI+4
Paperboy
August 2025
AI-powered news platform demystifying New Zealand politics used by 300+ users
WebAINews+3
Money Wrapped
Jan 2025
Open Banking spending tracker used by 340+ users.
WebUX ResearchProduct Design+5
FlareOps
Oct 2026 · Beta
Your Cloudflare accounts. One desktop app. Manage Workers, domains, DNS and cron schedules with account context and command review. Available as an open-source macOS beta.
DesktopCloudflareProduct Design+2
Walt's CV Checker
2026
Helping New Zealand students and grads improve their CVs with targeted feedback, document highlights and example rewrites.
WebAIProduct Design+2
Toys + Experiments
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AgentEats
December 2025
AI phone agent prototype that takes restaurant orders through natural voice, built in 3 hours at an ElevenLabs hackathon.
AIVoice AIProduct Design+4
Pew Pew VR
2019
VR game where you make PEW PEW noises with your mouth to play. Made for the KiwiJam 2019 Game Jam.
VROpen SourceGame+5
Quick Maths
2019
40 player browser math game. Built to learn about Websockets and the Canvas API
WebGameHackathon+6
Vroomba
July 2026
Voice-controlled multiplayer racing browser game built and designed with AI
WebAIVoice AI+5
KitchenBot
Nov 2025
CCTV app powered by OpenAI that looks for clutter, messes, or dishes left out, and gently posts a message on Slack telling you to clean it up if dirty
VideoAILLM+3
Infra.nz
2023
POC Website that makes it easy to see infrastructure system outages (water, power, internet, cellular service) in your area. Built to learn about mapping frameworks and data visualization for the GovHack 2023 hackathon.
WebMappingData Visualization+7
Fruit Tax
2021
Proof of concept shopping tech demo that raises the prices of products while you aren't looking. Uses your Webcam and OpenCV.
WebHackathonOpen Source+5
Swearsies
2019
Proof of concept swear jar that transfers $5 into your savings account every time your device hears you swear. Built to experiment with Google ML services, and banking APIs for the 2019 BankEngine Hackathon.
WebHackathonOpen Source+7