JIHUN CHOI
Mechanical Engineer — Design & Validation
Status
Open to work
Location
Toronto, ON
B.Eng.
Jul 2026
Scale
NTS
jihun5475@gmail.com (647) 877-7157 linkedin.com/in/jihun-choi York University — Mechanical Engineering

Designs get tested
before they're trusted.

Recent Mechanical Engineering graduate specializing in simulation-driven design — FEA, CFD, and iterative prototyping — across motorsports, marine propulsion, and renewable energy systems. Now targeting automotive & manufacturing engineering roles.

+18%
Safety factor, FSAE chassis
25 kn
Propulsor speed, 25kW limit
−15%
Material, sim-optimized geometry
FIG 0 — CFD streamline field, marine propulsor hull assembly
SHEET 02/06ExperienceREV A
Mechanical Design EngineerCAN‑YU
Sept 2025 – Apr 2026 · Toronto, ON
High-Performance Intelligent Marine Propulsor · Monaco Energy Boat Challenge
  • Led simulation-driven design (CFD + FEA) of a high-performance propulsion system, reducing drag and validating structural integrity under high-load conditions.
  • Engineered the propulsor to hit 25 knots while overcoming 1,160 N of hydrodynamic drag, under a strict 25 kW power ceiling.
  • Iterated duct and impeller geometry against hydrodynamic drag, structural load, and drivetrain reliability, then validated the result with a physical prototype.
  • Built and tow-tank tested multiple prototype iterations, confirming drivetrain reliability, torque transfer, and subsystem integration under real load.
3
Test video 01
4
Test video 02
Mechanical DesignerLassonde Motorsports
Oct 2024 – Apr 2025 · Toronto, ON
Formula SAE — Design Team
  • Specialized in FEA and CFD simulations, analyzing structural integrity and aerodynamic performance of Formula SAE vehicle components.
  • Conducted 20+ FEA simulations (static, fatigue, load cases) to validate chassis strength, improving safety factor by 18% under dynamic loading.
  • Performed CFD analysis on airflow and drag, contributing to an estimated 10–12% reduction in aerodynamic drag.
  • Optimized component geometry via simulation-driven design, cutting material usage by 15% while holding performance requirements.
Cargo HandlerFedEx
Aug 2024 – Present · Toronto, ON
  • Balanced full-time coursework and a competitive Formula SAE design role alongside a physically demanding, safety-critical logistics job — processing 500+ packages per shift with 100% compliance to safety protocol.
SHEET 03/06Machine Elements ProjectREV A

E-Bike Gearbox Design Report

Group capstone for MECH 3409 (Machine Elements Design): a two-stage spur gearbox engineered to step down a 700 rpm, 10 N·m e-bike motor to hit a 30 km/h top speed. Weighed a planetary layout against a simple spur design and selected spur gearing for its simplicity, serviceability, and cost — then carried it through AGMA bending/contact analysis and FEA validation.

Owned the introduction, performance requirements & constraints, and final design-requirements/conclusion sections, and edited the team's presentation video.

Design Notes
Gear ratio1:2.4 (25:60T)
Input torque10 N·m
Top speed30.2 km/h
Material1045 Steel
AGMA SH1.21
Mass5.46 kg
Result: design met all performance requirements (10 year fatigue life, <8 kg, 30 km/h) with an AGMA safety factor of 1.21 on contact stress, validated against FEA showing peak stress at the tooth root well under the 530 MPa yield strength of 1045 steel.
SHEET 04/06Additional ProjectREV A

Floating IoT-Based Sun-Tracking Solar Panel System

Designed floating mechanical structures supporting solar panels with dynamic sun-tracking capability, from hand-sketched concept through to a dimensioned CAD assembly.

  • Modeled and optimized assemblies in CAD to ensure stability, buoyancy, and durability in water environments.
  • Improved energy capture efficiency through optimized panel orientation and testing.
  • Integrated sensor-based control (LDR, IMU, ultrasonic) for automated tracking.
Design Notes
SensorsLDR, IMU, US
ActuationDual servo
BuoyancyPontoon hull
DateJul 2025
SHEET 05/06Maker ProjectsREV A

Arduino IDE Go-Kart

Ground-up RC go-kart build: designed the chassis, gearbox, and drivetrain in CAD, generated a full bill of materials, then wired and programmed the electronics on breadboard for functional testing.Jun 2025

Elastic Powered Go-Kart

Miniature 3D-printed car powered entirely by a wound elastic band — no motor. Iterated from a skeletal frame concept to an aerodynamic printed body, designing the gear train that stores and releases elastic energy.May 2025

SHEET 06/06Skills — Parts ListREV A
No.CategorySpecification
01CAD & SimulationSolidWorks, AutoCAD, Fusion 360, STAR‑CCM+
02Analysis MethodsFEA, CFD, Design for Manufacturing (DFM), Root Cause Analysis (RCA)
03Programming & DataMATLAB, LabVIEW, Java
04Manufacturing3D printing, prototyping, tolerance-aware design
05SoftwareMicrosoft Word, Excel, PowerPoint