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王博凡Wáng Bófán
Search backend engineer
Bofan Wang (王博凡), also known as Jaspr, is a backend engineer on Shopee's e-commerce search team in Singapore, working mostly in Go. He came to engineering from product and interaction design, and still designs for fun.
Works on the backend of Shopee's e-commerce search in Singapore, mostly in Go. The job in one line: take what people type, work out what they mean, find the right products and put them in the right order, before the page feels slow.
His older site, in Chinese, from the product and design years: essays on recommendation, gray releases, community products and onboarding, plus a few technical notes.
His GitHub, since 2013: 41 public repositories. The most-starred one is not about search: ColorCorrection, colour-correcting photos with a standard colour card (Python, 40 stars). Recent repos are agent and smart-glasses tooling.
The encyclopedia entry: early life, design years, search engineering, writing, open source, Latte, and a list of fun facts.
A dog, not a coffee. Ranks first on every query at home. She has her own index: career, places, Instagram.
Email is best: wang@jaspr.me. Also on LinkedIn, GitHub (JasprW) and Instagram.
Wrote about product and UX, interned as a product manager, and still designs for fun. This page is the most recent example.
An essay arguing that every personalised feed, shop and community app should ship an incognito mode, because a click is weaker evidence of interest than a recommender assumes. Written before he worked on search, and still his view.
Wiring language models to real tools, then checking what they actually finished, not what they said they did.
Why a home page is a search engine, how the tiny engine works, the colours and fonts, the menu, and the details hidden around the page.
Computers you wear instead of hold. Mostly smart glasses, where the hard part is a ranking question: what deserves a glance, and what should stay in your pocket.
If a device has an API, it will probably end up in an automation.
A technical note: locate the reference markers in a photo, extract the colour card, and use it to colour-correct the shot.
The other ranking problem: what to play, watch or listen to tonight.
A 2016 design study for search in the Meituan Android app, posted on jaspr.me: designing the search box, years before building what sits behind one.
Google Photos had just added bottom tab navigation and users were pushing back. A 2016 redesign of how the app gets around.
A 2015 study of how WeChat for Android could work, redrawn in Material Design.
A 2015 redesign of the Zhihu Android app in Material Design.
A 2017 essay, written when Douyin kept turning up in the tech news: an app that looked almost identical to Musical.ly, and what it did differently.
He used to complain that the apps he used most were badly designed. The more he talked to ordinary users, the less he believed design alone could carry a product. A 2017 essay.
WeChat quietly “added” two features that weren’t really new. A 2017 essay on grayscale testing: shipping to a slice of users first.
Approaches and source code for the 66 problems in 剑指 Offer, written up in 2019 while preparing for engineering interviews.