Oliver
Zhang
Engineer by trade, tinkerer by habit. Whatever I build for fun ends up here.
Fullstack TechnologistReading · Fitness · Art · GamesEN · 中文 · PT-BR● Next: Brazil
Watch on YouTube▶ Latest shorts
All videos →
How QR codes work: why a torn code still scans
How planes fly: the “longer path” story is wrong
How a differential works: why your wheels turn at two speeds
How noise cancelling works: it fights noise with more noise
How North Korea laundered $1.5 billion from Bybit, in three steps
How GPS works: the satellites don't know where you are
How a zipper works: no glue, just shape
The coffee belt: where coffee grows, where it goes, and the land it could lose
Mars's blue sunsets, and why Earth's are red
North Korea's fake-job malware: four reasons my antivirus stayed silent
North Korea's laptop farms: how a remote hire abroad works from a US home
Fake job offers that hack developers: my two cases, the FBI's red flags, and the fix
Binance's $6.3B hack: no keys leaked, and it may have started on one laptop
The Jevons paradox: AI got 33× more efficient, so why will its power use double?
Where does your Claude Code prompt go?
How long would a hacker need to crack your password?
ShotloopGet it free →Every short here is made with Shotloop, my free Mac app: scenes written in code, rendered one shot at a time.
- 01An idea becomes a script and a storyboard
- 02Each shot is a scene written in code, 2D or 3D
- 03Shots render one at a time; a fix re-renders only that shot
Latest
How QR codes work: why a torn code still scansVideoHow planes fly: the “longer path” story is wrongVideoHow a differential works: why your wheels turn at two speedsVideoHow noise cancelling works: it fights noise with more noiseVideoHow North Korea laundered $1.5 billion from Bybit, in three stepsVideoHow GPS works: the satellites don't know where you areVideoHow a zipper works: no glue, just shapeVideoThe coffee belt: where coffee grows, where it goes, and the land it could loseVideoMars's blue sunsets, and why Earth's are redVideoNorth Korea's fake-job malware: four reasons my antivirus stayed silentVideoNorth Korea's laptop farms: how a remote hire abroad works from a US homeVideoFake job offers that hack developers: my two cases, the FBI's red flags, and the fixVideoBinance's $6.3B hack: no keys leaked, and it may have started on one laptopVideoThe Jevons paradox: AI got 33× more efficient, so why will its power use double?VideoWhere does your Claude Code prompt go?VideoHello World to IPOGameHow long would a hacker need to crack your password?VideoShotloopAppTwo fake Upwork jobs, one infected Mac: my run-ins with North Korea's Contagious InterviewPostTsubaAppWild Chrysanthemums in the FogLabDream ButterflyLabDream JellyfishLabQuantum Entanglement IILabQuantum EntanglementLabColorful TreeLab
Experience
Full resume →Where I’ve worked
Spark Play Ltd. · Senior Full Stack Engineer · 2025 – Present
Aladia · Frontend Engineer · 2024 – 2025
Guangdong Chance3D Technology · XR Developer · 2023 – 2024Shandong Chaoshi Tourism Co., Ltd. · Frontend Developer · 2021 – 2023
Alibaba Group · Frontend Developer · 2019 – 2021
China Telecom · Java Software Developer · 2017 – 2019
Soarscape · Fullstack engineer · Tiki3D
Tiki3D · Lead 3D web developer
Catalyst · Partner
Govee · Partner
Jieli Hudong · PartnerLab
6 pieces →Experiments
Follow along
YouTubeI share builds, experiments, and lessons as I go.
New videos on YouTube, shorter notes on X. Every post here links back to both.
Intermission
Hello World to IPO
- Level
- 1
- Rank
- Score
- 00000
- Best
- 00000
Your code fires by itself. Space or ↑ to jump (hold for higher): hop over bugs, jump to shoot fliers, grab coffee to heal. Every 5 levels an AI model boss shows up. Touch: tap to jump