Scope
Last Lock is an early-stage startup developing retrofit access control systems for commercial buildings, combining physical lock hardware with integrated software for centralized security management.
The team was focused on designing compact, retrofit-compatible locking devices that integrate mechanical systems and embedded electronics within a minimal form factor.
As a Mechanical Engineering Intern, I contributed across design, prototyping, manufacturing, and testing within a small, fast-paced team supporting rapid iteration and customer-facing prototype development.
Product Design/Development
Supported refinement of the core lock mechanism through iterative prototyping and manufacturability improvements.
Designed and 3D printed custom programming fixtures for the Electrical Engineering team, improving PCB flashing efficiency and repeatability.
Performed tolerance stack-up analyses to ensure part compatibility and reliable assembly across prototype builds.
Manufacturing
Developed Fusion 360 CAM programs for CNC machining of test fixtures and prototype components.
Designed and implemented custom fixturing to enable modification of existing parts and fabrication of new hardware for validation testing.
Oven Temperature Control Unit Project
Designed and built an Arduino-based temperature control system to regulate an epoxy curing oven.
Selected electrical components, implemented wiring, developed control logic, and designed a 3D-printed enclosure for the system.
Improved curing consistency by enabling precise temperature and timing control—significantly increasing repeatability and reliability of bonded assemblies.
Summary
This experience provided hands-on exposure to hardware product development within a startup environment, strengthening my skills in mechanical design, rapid prototyping, manufacturing, and cross-functional collaboration.
Working in a small, agile team enabled me to contribute across multiple stages of development and gain practical experience in bringing hardware concepts through prototype and validation phases.