Henry Wynberg

Email: henrywynberg@gmail.com
Github: HotelSierraWhiskey

I'm a Toronto-based developer with a background in embedded systems. I write high-assurance firmware for devices in critical infrastructure. I also dabble in PCB design, backend, and desktop application development.

I'm ultimately motivated by learning new skills and understanding systems at a fundamental level. If I didn’t have a job building cool things, I’d be building cool things anyway.

Technical Skills

OS / Platforms:
Debian/Ubuntu, Windows, ARM Cortex-M0+/M4/M33, PIC
Languages:
C, C++, ARM assembly, Python, Shell scripting, TypeScript/JavaScript, SQL
Tools & Technologies:
FreeRTOS, GDB, Make, linkerscripts, FastAPI, Flask, KiCad, nginx, Jenkins, Robot
Workflow:
Git (Github, Gitlab, Bitbucket), Jira, Confluence, VS Code, WSL, VirtualBox, Vim

Experience

Echologics | Firmware Developer II (2023–Present):
Development of ultra-low-power IoT devices for acoustic leak detection; Sierra Wireless modem drivers; core work on a pressure and flow monitoring product; security-focused static analysis across firmware and test repositories; DMA-driven data collection; alarm subsystem design and implementation; large-scale, distributed system diagnostics and monitoring
DBNC Group Inc. | Embedded Systems Developer (2023):
Firmware + software for a multi-platform access control system; DESFire RFID tooling; key management; card dispenser stack development; passport scanner stack development; encrypted shell implementation; API design; database integration; admin tooling.
Rills Automation | Co-Founder (2019–Present):
ARM & PIC firmware, end-to-end PCB development (EDA, parts sourcing, BOM scrubbing, soldering, final assembly, and bring-up), SAMC/SAMD toolchain work, device enclosure design/ prototyping, server admin, home-rolled HAL/ driver libraries, bespoke communication protocol design, implementation, and profiling; embedded filesystem integration, bootloader implementation, ground-up RTOS-based firmware platform development.
TDSB | Elementary Teacher (2021–2023):
Teaching, workflow optimization, and tech support for remote education.
Extra Ed | Administrator (2021–2022):
Managed payment gateway operations, improved security practices, designed curricula, and hired teaching staff.

Education

University of Toronto — Honours BA, English (2011–2015)
University of Toronto — CEFR Level B2, German (2016)
Medaille College — MSEd (2019–2020)