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Added 10 mins ago
GP
Production Manager - Paper Bag Manufacturing
Gather Packaging
Toronto, ON · North York, ON
- $100,000 to $120,000 CAD / year
- Full-time
This is an opportunity to join us at an important stage of our growth and help build the manufacturing standards, systems and skilled workforce that will define our operation for years to…
Added 10 mins ago
X
Quantum Software Developer - FTQC Software (Intermediate to Senior)
Xanadu
Toronto, ON
- Full-time
…logical software abstractions and real-world hardware control systems. Your mission will be to ensure our quantum software stack is fully optimized and ready to unlock the capabilities of…
Added 10 mins ago
X
Quantum Software Developer - Performance
Xanadu
Toronto, ON
- Full-time
BSc in Computer Science, Engineering, Physics, Math, or a related field.
Added 10 mins ago
X
System Software Developer - Performance
Xanadu
Toronto, ON
- Full-time
BSc in Computer Science, Engineering, Physics, Math, or a related field.
Added 10 mins ago
X
Software Developer - Frontend (Intermediate to Senior)
Xanadu
Toronto, ON
- Full-time
As a Software Developer, you will help build out the pennylane.ai ecosystem of products. The goal of pennylane.ai is to help pioneer quantum software development as a discipline and spread…
Added 10 mins ago
X
Software Developer - Backend (Intermediate to Senior)
Xanadu
Toronto, ON
- Full-time
Develop and improve engineering processes to ensure developer efficiency and consistent product delivery.
Added 10 mins ago
X
Quantum Scientist - Algorithms
Xanadu
Toronto, ON
- Full-time
PhD in Physics, Computer Science, Chemistry, Mathematics, Engineering, or a related quantitative discipline - or equivalent practical experience.
Added 10 mins ago
X
Quantum Scientist - Finance
Xanadu
Toronto, ON
- Full-time
Design quantum algorithms for the PDEs underlying derivative pricing and risk, including linear-systems and differential-equation solvers and the input/output bottlenecks that govern their…
Added 10 mins ago
X
AI Specialist - Representation and Reinforcement Learning
Xanadu
Toronto, ON
- Full-time
Develop generalizable representation/reinforcement/generative learning strategies for diverse research data, addressing both theoretical and engineering challenges.
Added 10 mins ago
X
AI Developer - Agentic System
Xanadu
Toronto, ON
- Full-time
As an AI Developer at Xanadu, you will play a crucial role in integrating generative AI into our R&D methodologies. This unique position allows you to contribute to the development of our…
Added 10 mins ago
X
AI Specialist - AI For Research
Xanadu
Toronto, ON
- Full-time
BSc. in Computer Science, Engineering, Physics, Math, or a related field.
Added 10 mins ago
X
AI Specialist - Simulation & Optimization
Xanadu
Toronto, ON
- Full-time
…will focus on enhancing the performance of our most crucial systems, from the design and characterization of our quantum hardware to the execution of internal simulation software on…
Added 10 mins ago
X
Senior Software Developer - Automation Systems
Xanadu
Toronto, ON
- Full-time
As a Senior Software Developer on our AI team, you will be a hands-on individual contributor who sets the technical bar for the internal AI research platform that accelerates Xanadu's R&D.…
Added 10 mins ago
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Data Platform Engineer
Xanadu
Toronto, ON
- Full-time
Design, build and maintain a robust cloud data infrastructure (ingestion, transformation, serving) that will serve multiple engineering team across the organization
Added 10 mins ago
X
Senior Electrical Engineer
Xanadu
Toronto, ON
- Full-time
MSc or PhD in electrical engineering, physics, or relevant related discipline.
Added 10 mins ago
X
Senior Scientist - SNSPDs
Xanadu
Toronto, ON
- Full-time
…with SNSPDs (both in design and characterization), cryogenic systems, and photonic hardware, as well as the ability to work effectively across disciplines in a fast-paced…
Added 10 mins ago
X
Senior Photonics Engineer - Homodyne Detection
Xanadu
Toronto, ON
- Full-time
…developing and experimentally validating cutting-edge photonic systems. You will be working with photonic chips that include networks of high-speed electro-optic modulators and integrated…
Added 10 mins ago
X
Senior Photonic Engineer - Experimentalist
Xanadu
Toronto, ON
- Full-time
…developing and experimentally validating cutting-edge photonic systems. Your primary focus will be working with integrated photonics, and precise characterization of the performance of…
Added 10 mins ago
X
Senior Low Temperature Device Engineer (SNSPDs)
Xanadu
Toronto, ON
- Full-time
In this role, you will apply your expertise in superconducting single-photon detector engineering to advance the performance and scalability of our SNSPD platform.
Added 10 mins ago
X
Senior Cryogenic Engineer
Xanadu
Toronto, ON
- Full-time
With your deep technical expertise and experience in low temperature engineering, hands-on expertise with cryostats and related technologies, you will play a critical role in designing and…
Added 10 mins ago
X
Senior Photonics Design Engineer
Xanadu
Toronto, ON
- Full-time
Msc or PhD in Engineering, Science, or related field, with 2+ years experience in an industrial setting
Added 10 mins ago
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Senior Scientist - Precision Measurements (Optical Metrology)
Xanadu
Toronto, ON
- Full-time
PhD in Physics, Electrical/Mechanical Engineering, or a related field, with at least 2 years of postdoctoral or industry experience
Added 10 mins ago
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Senior Photonics Engineer - Experimental Nonlinear Optics
Xanadu
Toronto, ON
- Full-time
Modeling: Proven ability to build mathematical models of physical systems using analytical and numerical tools.
Added 10 mins ago
X
Photonics Test Engineer - Wafer Level
Xanadu
Toronto, ON
- Full-time
BS degree in Electrical Engineering, Physics, Materials Science, or closely related field
Added 10 mins ago
X
Senior Photonics Design Engineer - Integrated Nonlinear Optics
Xanadu
Toronto, ON
- Full-time
Msc or PhD in Engineering, Science, or related field, with 2+ years experience in an industrial setting

Lightmatter

Sr SDET– Firmware Automation

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Apr 6, 2027
Posting language: English
Posted: Oct 8, 2026

Original job description

Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world’s first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.

Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!

If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.

Lightmatter is (re)inventing the future of computing with light!

At Lightmatter, an SDET is a software engineer first , not a QA coordinator or manual tester. You'll design and build the frameworks, harnesses, and hardware-in-the-loop infrastructure that let firmware engineers test their own code continuously on real photonic hardware. You'll sit with the firmware team, spend time at the bench with oscilloscopes, debuggers, and optical instruments, and serve as the bridge between firmware and broader software and systems organizations.

Responsibilities

Own the architecture and roadmap of the firmware test automation framework across products, targets, sites, and teams
Design and build stable automation for new firmware features and hardware, held to production-quality engineering standards
Build and operate HIL test infrastructure: bench and rack fixtures, device farms, power/reset control, instrument integration, and CI orchestration on real photonic hardware
Define test strategy, plans, and reporting; lead test plan reviews across teams
Integrate firmware testing into CI/CD so every change is built, flashed, exercised on hardware, and reported automatically
Own framework reliability and flaky test metrics as first-class engineering problems
Build results, telemetry, and log pipelines for triage, trend analysis, and release decisions
Debug failures across the full stack (firmware, board, instrument, fixture, test code) and partner with engineers to resolve them
Participate in firmware design reviews to influence testability and diagnostics early
Integrate with data center management interfaces (CMIS, OpenBMC, DMTF); debug embedded systems using GDB, JTAG, and logic analyzers
Define diagnostics and monitoring architecture for photonic transceivers
Mentor engineers on test architecture and write clear documentation for non-specialists

Qualifications

8+ years of professional software development, primarily on embedded products, including designing test frameworks and infrastructure
BS or MS in Computer Science, Electrical Engineering, or equivalent experience
At least one automation framework or HIL system architected and built from scratch, adopted by other engineers, and in daily use and the ability to discuss its design, tradeoffs, and lessons learned
Strong Python: fixture and abstraction layers, hardware drivers, plugin/configuration architectures
Working fluency in embedded C/C++: able to read firmware drivers or state machines and write tests for edge cases
Experience owning CI/CD pipelines running tests on physical hardware (GitHub Actions, GitLab CI, Jenkins, or equivalent), including runner health, hardware allocation, and recovery
Track record of delivering robust automation under fast-changing requirements and hardware

Preferred Qualifications

PhD, or MS with 8+ years in embedded test automation or firmware development
Experience testing firmware for optical transceivers, photonic systems, or precision analog/mixed-signal hardware
Familiarity with CMIS, OpenBMC, or DMTF/Redfish
Experience with Pytest ecosystem and test tooling for Zephyr or FreeRTOS (Twister, ztest, Renode, QEMU, or similar)
Experience with optical and electrical test and measurement equipment
Startup experience
Thoughtful use of AI-assisted tools in test generation, triage, or analytics

Benefits

Comprehensive Health Care Plan (Medical, Dental & Vision)
Retirement Savings Matching Program
Life Insurance (Basic, Voluntary & AD&D)
Generous Time Off (Vacation, Sick & Public Holidays)
Paid Family Leave
Short Term & Long Term Disability
Training & Development
Commuter Benefits
Flexible, hybrid workplace model
Equity grants (applicable to full-time employees)

Benefits eligibility may vary depending on your employment status and location. Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.

Export Control

Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws.

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More about this job

Responsibilities

Architect and maintain firmware test automation frameworks and hardware-in-the-loop infrastructure, integrating physical hardware testing into CI/CD and building reliable results and telemetry pipelines. Debug issues across firmware, boards, instruments, fixtures, and test code; shape testability and diagnostics through design reviews; and mentor engineers.

Requirements

Requires 8+ years of professional software development, primarily on embedded products, a relevant bachelor's or master's degree or equivalent experience, and experience building an automation framework or HIL system adopted for daily use. Candidates should have strong Python, working fluency in embedded C/C++, and experience operating CI/CD pipelines that test physical hardware.

Skills

Firmware Test Automation
Python
Embedded C/C++
Hardware-in-the-Loop Testing
Test Framework Architecture
CI/CD
Pytest
Embedded Systems Debugging
GDB
JTAG
Logic Analyzers
Hardware Drivers
Optical and Electrical Test Equipment
CMIS
OpenBMC
DMTF/Redfish

Benefits

Health Care Plan
Life Insurance
Paid Time Off
Paid Family Leave
Short-Term Disability
Long-Term Disability
Training and Development
Commuter Benefits
Equity Grants

Visa sponsorship

Not detected in the job text

Keywords

Firmware
Test Automation
Hardware-in-the-Loop
Python
Embedded C/C++
CI/CD
Pytest
GitHub Actions
GitLab CI
Jenkins
CMIS
OpenBMC
DMTF/Redfish
GDB
JTAG
Logic Analyzers
Zephyr
FreeRTOS
Twister
ztest
Renode
QEMU
Optical Transceivers
Photonic Systems
Mixed-Signal Hardware
Oscilloscopes
Hardware Drivers
Test Framework Architecture
Telemetry
AI-Assisted Test Generation

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