Senior Firmware Engineer

About the job
Job Title: Senior Embedded Firmware Engineer

Location: Hybrid, 2-3 days per week onsite (Ottawa or GTA, On)

Job Type: Permanent/Can be contractual as well if preferred

Compensation: $115,000–$150,000/year, plus benefits

About the Opportunity

Join a team building high-performance audio products that people rely on every day. In this hands-on role, you will own the control plane firmware, shaping how power, protection, and inter-processor messaging work together to create a reliable, great-sounding experience.

You will partner with hardware, software, and acoustics, translating schematics and requirements into tightly optimized, safety-minded firmware. Your work will be felt from first power-on to every smooth update in the field.

What’s in it for You

A culture that values craftsmanship, collaboration, and clear communication. Mentorship from senior engineers, exposure to cutting-edge mixed-signal hardware, and the chance to ship firmware that is stable, secure, and elegant.

Your Responsibilities

You will design real-time C++ firmware on ARM Cortex-M using FreeRTOS, focusing on safety and responsiveness.
You will build and maintain custom bootloaders and secure firmware update flows.
You will bring up new boards with electronics partners, reading schematics and debugging HW/SW interactions.
You will implement drivers for PMICs, ADC/DACs, and rotary encoders, guided by datasheets and lab testing.
You will develop robust IPC with Linux SoMs and troubleshoot I2C, SPI, UART, and I2S using scopes and logic analyzers.
You will implement protection logic for thermal events, short circuits, and recovery paths.
Skills and Qualifications

5+ years of embedded firmware in C and C++, with RTOS fundamentals.
Expertise in bootloaders, update mechanisms, and memory management.
Strong with FreeRTOS concepts, queues, mutexes, and preemption.
Confident with mixed-signal schematics and bench tools.
Deep knowledge of USB, I2C, SPI, UART, and I2S. Bonus: HDMI control, Python or Bash.
Note from the Hiring Manager

“We value engineers who balance rigor with pragmatism. If you can design for safety, ship thoughtfully, and explain the why behind your choices, you will thrive here.”

Why Partner with Altis

“If you’ve never worked with a staffing agency before, don’t worry, we make it easy. You’ll still engage directly with the client while we handle the logistics, provide guidance, and keep you informed every step of the way. We’ll represent your strengths, guide you through each stage of the process, and ensure the experience feels personal and transparent