Hey! Raymond here. I’m a product design engineer.
Chargepoint MDE. University of Illinois Urbana-Champaign Engineering student. Expected graduation: December 2027. Portfolio version 10-09-2025.Raymond Ka Tsui
Mechanical Design Engineer, Intern @ ChargePoint
Mechanical Engineer, Intern @ Yummy Future YC-19
Systems Engineering & Design @ UIUC.
Contact me:
(510) 399[DASH]9807
rayktsui[AT]gmail[DOT]com
Formerly,
Hardware Engineer, Temp @ Eikon Therapeutics
Mechanical Engineer, Intern @ Eikon Therapeutics
RF Validation & Test, Intern @ UL Solutions
At a Glance
Looking / open for:
Mechanical, Product Design, TPM, PM
Internship roles - Spring/Summer 2026
8 years of experience in 3D CAD:
Emphasis on startup rapid prototyping
“move fast, break fast”.
NX, Solidworks, Onshape, Creo, CATIA
Certified Associate @ Onshape (ID: 8cyg)
The Projects.
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![An image of a Water Phantom]()
L1, Scanning Water Phantom
Medical Device. BIDMC, 2022
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X1, V4B Arm Robot Concept
Virtual Fourbar. FTC Experimental, 2022
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![A robot]()
Eclipse, Modular Robot Concept
Massively-Modular System. FTC Experimental, 2022
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![An image of The Float House]()
Resurgent, Turret Robot Concept
Dual-Vectoring Vertical Turret System. FTC Experimental, 2023
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![]()
Shiba, Leafspring Keyboard Switch
Buckling leaf spring. Prototype, 2022
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![WDT]()
R2, WDT Spirograph Tool
Coffee grounds spirograph distribution. Productization, 2025
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![]()
BladeLock, Safety Knife Block
Child-proof locking mechanism. Productization, 2025
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![Flying-wing drone]()
Condor, UAS
Flying-wing drone/sUAS. Prototype, 2025
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![Longboard LED Signaling System]()
Artemis, Longboard Light Package
LED Signaling System. Testing, 2025
The skillsets.
What’s with all of the portfolio robots?
I grew up in a robotics heavy environment.
However — I did not have the available resources to really financially support the building of multiple FTC competition robots. As a result, I spent most of my free time stuck to CAD, where I can truly express my engineering skills without financial constraints.
One of my hobbies that I like to do whenever I’m not engaged in some sort of engineering project is graphic design and 3D digital art. As a result, I’m often saturated in an environment where I would always end up doing some sort of CAD -- be it working on photoreactors or making a fighter jet that has practically no reason to exist. Nevertheless, a side quirk from this was that I got pretty good (and fast) at visualizing designs, a trait that got me further interested in the world of engineering.
I love my 3D printers!
From receiving my first 3D FDM machine back in my freshman year of high school to managing a 12-printer Prusa/Bambu farm at my current job, 3D printing has always been a cornerstone of my engineering journey and my go-to tool for rapid prototyping.
Machines I’ve worked on:
Prusa i3 Mk3s
Artillery Sidewinder X1
Bambu X1 Carbon
Bambu A1
Bambu P1s
Markforged Oynx One
Creality Ender 3 Pro/S
Creality Ender 5
Prusa SL1
Voron 2.4
Ultimaker S3
Materials I’ve worked with:
PLA
Nylon
CF Composite Nylon
PETG
RCF/PLA
TPU (all durometers)
ABS
PC
I am horrifyingly addicted to CAD.
In 2022, I got my first professional CAD certification as a PTC Onshape Associate.
In some way, it’s some sort of freedom for my brain — I wanted to see how creative my imagination can get when I didn’t have to worry about the constraints of the real world — yet . As a result, many of my creations here didn't stem from a pre-existing need. They were about exploration and the joy of creation.
Current Project(s).
Longboard LED Signaling System
Living and working in a college campus means that there will be pedestrians, cars, scooters and inline skate/longboarders everywhere. As a longboarder, I understand how much of a menace we are in society when it comes to right-of-way intersections and aggressive lane-changes down campustown.
Unfortunately, the only way for us to signal to other people that we’re changing directions or turning is to wave frantically in hopes that our arms can catch the attention of oncoming traffic.
This easy-install signaling device that I am working on will seamlessly attach to longboard trucks and automatically notify others of the rider’s turns, stops, and emergencies — hopefully giving drivers a helping hand in rider awareness.
2025 December
Expected Finish Date
Condor STOVL sUAS
Working on drones at work made me realize throwing things into the air are really cool.
Unfortunately, it’s pretty hard to get something to stay in the air for long. As a result, I’m challenging myself to design a catapult-launched flying-wing STOVL that will be able to loiter for long periods of time and be able to vertically land itself.
This is a personal project to educate myself on aerospace fundamentals and step into the hobby of RC flying.
2025 December
Expected Finish Date