Sr SDET - Firmware Automation

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Sr SDET - Firmware Automation in Canada

Lightmatter
Full time
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Canada
10/08/2026
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Toronto

Responsibilities

Own the architecture and roadmap of firmware test automation frameworks across products, targets, sites, and teams.
Design and build production-quality automation for firmware features and hardware.
Build and operate hardware-in-the-loop infrastructure, including fixtures, device farms, power and reset control, instrument integration, and CI orchestration.
Define test strategies, plans, reporting, and cross-team test plan reviews.
Integrate firmware testing into CI/CD so changes are built, flashed, exercised on hardware, and reported automatically.
Own framework reliability and flaky-test metrics.
Build results, telemetry, and log pipelines for triage, trend analysis, and release decisions.
Debug failures across firmware, boards, instruments, fixtures, and test code.
Participate in firmware design reviews and improve testability and diagnostics.
Integrate with data center management interfaces and debug embedded systems using GDB, JTAG, and logic analyzers.
Define diagnostics and monitoring architecture for photonic transceivers.
Mentor engineers and document test architecture for non-specialists.

Requirements

8+ years of professional software development experience, primarily on embedded products, including test frameworks and infrastructure.
BS or MS in Computer Science, Electrical Engineering, or equivalent experience.
Experience architecting and building at least one automation framework or HIL system from scratch that was adopted and used daily by other engineers.
Strong Python skills for fixture and abstraction layers, hardware drivers, and plugin or configuration architectures.
Working fluency in embedded C/C++ for reading firmware drivers or state machines and writing edge-case tests.
Experience owning CI/CD pipelines that run tests on physical hardware, including runner health, hardware allocation, and recovery.
A track record of delivering robust automation under changing requirements and hardware conditions.
Preferred: PhD, or MS with 8+ years in embedded test automation or firmware development.
Preferred: experience testing optical transceivers, photonic systems, or precision analog/mixed-signal hardware.
Preferred: familiarity with CMIS, OpenBMC, or DMTF/Redfish.
Preferred: experience with Pytest and test tooling for Zephyr or FreeRTOS, including Twister, ztest, Renode, QEMU, or similar.
Preferred: experience with optical and electrical test and measurement equipment, startup environments, or AI-assisted tools for test generation, triage, or analytics.

Benefits

Comprehensive medical, dental, and vision coverage.
Retirement savings matching program.
Basic, voluntary, and AD&D life insurance.
Vacation, sick leave, and public holidays.
Paid family leave.
Short-term and long-term disability coverage.
Training and development benefits.
Commuter benefits.
Flexible hybrid workplace model.
Equity grants for eligible full-time employees.
Benefits eligibility may vary by employment status and location.

Lightmatter

Lightmatter builds photonic computing and interconnect hardware for AI and high‑performance computing data centers. Its products include Envise, a photonic AI accelerator, and Passage, a 3D‑stacked photonics engine that links large numbers of processors at high bandwidth and low latency. Founded ...

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