David Lenfesty
Embedded Developer at Chemelex
Edmonton, Alberta, Canada
Summary
👤
Senior🎓
Top SchoolDavid Lenfesty is an embedded developer with 10 years of hands-on experience designing firmware and low-level drivers for microcontrollers, FPGAs, and robotic systems. Soon to graduate with a nanoengineering co-op background from the University of Alberta, he blends academic rigor with production experience at companies like Copperstone, Eideticom, Tangent, and now Chemelex. He has contributed notable open-source work to the Rust-based embassy embedded framework, porting Ethernet support to STM32 variants and creating a generic SMI driver that improved flexibility across platforms. Comfortable crossing hardware and software boundaries, David has delivered RTL bootloaders, verification tooling, and Bluetooth LE health-device firmware, showing a pattern of solving hard integration problems. Based in Edmonton, he maintains an active project backlog and a knack for turning hardware constraints into elegant, reusable software abstractions.
10 years of coding experience
4 years of employment as a software developer
Bachelor's degree, Electrical and Electronics Engineering, Bachelor's degree, Electrical and Electronics Engineering at University of Alberta
Github Skills (9)
ethernet10
embedded10
low-level-programming10
rust10
driver10
stm10
async10
hal10
gpio9
Programming languages (14)
Github contributions (5)
embassy-rs/embassy
Apr 2022 - Apr 2022
Modern embedded framework, using Rust and async.
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:6 commits, 1 PR, 2 comments in 5 days
Contributions summary:David focused on developing Ethernet drivers for the `embassy-rs/embassy` repository, which is a modern embedded framework written in Rust. Their contributions involved porting Ethernet functionality to a specific STM32 microcontroller (F107) and converting an existing LAN8742 driver to a generic SMI driver, improving flexibility. The user also consolidated Ethernet driver versions and implemented pin configurations for different STM32 variants, indicating in-depth knowledge of hardware and low-level programming.
asyncrustembeddedhaldrivers
UofA-SPEAR/pcb_designs
Mar 2018 - May 2020
A place for SPEAR PCBs
Contributions:118 commits, 24 PRs, 105 pushes in 2 years 2 months
place
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