Job Description Q-Block Computing is seeking a Senior Embedded Software Developer to join our growing team in Ottawa, Ontario. This role offers an exciting opportunity to contribute to the development of cutting-edge quantum technologies in sensing, communication, and computation. The candidate will join Q-Block Computing to serve as the lead firmware developer on the Qubit Composer platform team, delivering complex subsystems and coordinating the day-to-day development work of the embedded software team under the guidance of the Technical Team Lead.
Job Summary As a Senior Embedded Software Developer on the Quantum Control Firmware team, you will collaborate with other team members and achieve technical milestones under the guidance of the Technical Team Lead. Job duties include the design, architecture, and implementation of firmware libraries and embedded control subsystems for ARM Cortex-M-based platforms. This may include applications such as real-time multi-unit synchronization, deterministic waveform generation, and high-throughput data pipelines for quantum sensing, communication, and computation hardware.
Responsibilities Design, architect, and implement reusable firmware libraries and embedded control subsystems in C/C++ for ARM Cortex-M platforms within the Arduino/PlatformIO ecosystem
Analyze system-level requirements and recommend architectural approaches for new firmware features and subsystem modifications
Develop and validate DMA-based parallel data transfer subsystems and synchronous multi-pin I/O operations for deterministic, low-latency hardware control




Implement and test high-speed peripheral control for DAC, ADC, DDS, PLL, digital potentiometers, and RF attenuator/amplifier ICs communicating over SPI and LVDS
Design and implement digital control loop modules (PI2D, FIR/IIR filters) for precision analog output stabilization
Coordinate task execution and review the code, test results, and documentation of Electronics Engineering Technologists and other developers on the team
Conduct system-level integration testing across multiple interconnected control units; design test strategies and document integration procedures and failure modes
Set up and maintain firmware build environments, toolchains (PlatformIO, Make), and Git workflows for the team
Write documentation for new and updated firmware subsystems
Collaborate with cross-functional hardware and quantum systems teams
Contribute to a culture of continuous learning and knowledge sharing within the team
Qualification Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field
5+ years of professional experience in embedded software development with ARM Cortex-M or comparable architectures




Skills Strong C/C++ proficiency; demonstrated experience designing reusable embedded libraries or firmware architectures
Deep understanding of DMA configuration, memory-mapped I/O, and real-time scheduling on ARM microcontrollers
Experience with high-speed SPI, multi-IC board-level integration, and mixed-signal debugging
Demonstrated ability to coordinate and review the technical work of other developers
Experience with NXP i.MX RT series, Teensy, or PlatformIO platforms is an asset
Exposure to digital control theory (PID, IIR/FIR), precision timing systems, or clock synchronization is an asset
Good laboratory knowledge with electronic circuits and standard instruments such as oscilloscopes, logic analyzers, and signal generators
Strong attention to detail and a sense of responsibility in all tasks
Critical thinking and problem-solving mindset
Strong interpersonal skills and ability to work collaboratively in a energetic team environment
Benefits Extended health care benefits (inc. dental and vision)
Life insurance
Equal Opportunity Q-Block Computing is an equal opportunity employer. We are committed to treating all employees and applicants for employment with respect and dignity. If you require assistance and/or reasonable accommodation due to a disability during the application or recruiting process, please feel free to notify us.
Canadian citizens and permanent residents are strongly encouraged to apply. All interested candidates are encouraged to apply.

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📌 Senior Embedded Software Developer — Quantum Control Firmware (Quebec City)
🏢 Q Block
📍 Quebec City