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Added 11 mins ago
X
Senior Photonics Engineer - Homodyne Detection
Xanadu
Toronto, ON
- Full-time
We are seeking a Senior Photonic Engineer – Integrated Homodyne to participate in designing, developing and experimentally validating cutting-edge photonic systems. You will be working with…
Added 11 mins ago
X
Senior Photonic Engineer - Experimentalist
Xanadu
Toronto, ON
- Full-time
We are seeking a Senior Photonic Engineer – Experimentalist to participate in designing, developing and experimentally validating cutting-edge photonic systems. Your primary focus will be…
Added 11 mins ago
X
Senior Photonics Design Engineer - Integrated Nonlinear Optics
Xanadu
Toronto, ON
- Full-time
The successful candidate will work within the photonic integration team to develop cutting-edge passive and active components used throughout Xanadu's fault tolerant architecture.…
Added 11 mins ago
X
Photonics Engineer - Experimentalist
Xanadu
Toronto, ON
- Full-time
…quantum computing. We are seeking a highly skilled Photonic Engineer - Experimentalist to perform the design, development, and experimental validation of cutting-edge photonic systems, with…
Added 11 mins ago
X
Layout and Design Engineer - SNSPDs (Superconducting Nanowire Single Photon Detectors)
Xanadu
Toronto, ON
- Full-time
Experience working in a collaborative team-based development environment, preferably using version control systems such as Git
Added 11 mins ago
X
Technical Project Manager
Xanadu
Toronto, ON
- Full-time
Experience working with software, hardware, systems, or other technical engineering teams.
Added 56 mins ago
ES
Senior Solution Architect
EPAM Systems
Toronto, ON
- Full-time
Experience with hybrid and on-premises architecture, including integration with e-commerce systems and legacy platforms
Added 2 hours ago
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Principal SerDes System/DSP Design Engineer
Ciena
Canada
- $126,100 to $201,500 CAD / year
- Full-time
We are seeking a highly skilled Senior SerDes System/DSP Design Engineer to join our advanced engineering team . In this role, you will lead the architecture, design, and validation of…
Added 3 hours ago
M
Embedded Software Engineer
MyArmenianNetwork
Oakville, ON
- Full-time
We are seeking a hands-on Embedded Software Engineer for our core engineering team. You will write low-level intelligence, firmware, and control algorithms for connected robotic machinery,…
Added 5 hours ago
AS
Senior Data Developer
AgileGrid Solutions
Canada
- Full-time
We are seeking a highly skilled Senior Data Developer (Engineer) to join our dynamic team. This role is instrumental in establishing a robust data foundation for Contact Distributor, our…
Added 7 hours ago
TI
Cyber Security Specialist
Themesoft Inc.
Toronto, ON · North York, ON
- Contract
Technical Security Research Engineer to research, prototype, evaluate, and operationalize emerging cybersecurity capabilities. This is a hands-on role for someone who can move from a…
Added 13 hours ago
ES
Solution Architect
EPAM Systems
Canada
- Full-time
Oversee end-to-end integration of Salesforce with enterprise systems including ERP platforms, legacy databases, and middleware solutions
Added 13 hours ago
S
Building Coordinator
SYSTRA
Montreal, QC
- Full-time
…safety, vertical transportation, civil interfaces, and rail systems integration), and scheduling statutory coordination meetings to meet the deliverables…
Added 13 hours ago
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BMS Engineer Candidate
EXONIX - Global Industrial Company
Engineer, BC
- Full-time
We are seeking a skilled BMS Engineer to join our team and play a key role in designing, implementing, and maintaining cutting-edge building management systems for our clients.
Added 14 hours ago
TD
Software engineer
Tao Digital ULC
Toronto, ON
- From $57 CAD / hour
- Full-time
- Hybrid
Lead and co-ordinate teams of information systems professionals in the development of software and integrated information systems, process control software and other embedded software…
Added 16 hours ago
V
QA Engineer
Varonis
Vancouver, BC
- Full-time
The Role: We are seeking a highly skilled QA Engineer to join our R&D team supporting Varonis Atlas. In this role, you will design, implement, and execute tests to ensure the reliability,…
Added 18 hours ago
CC
Senior Salesforce Engineer
Canadian Cancer Society
Toronto, ON · Ottawa, ON · Montreal, QC · Quebec, QC · Prince George, BC · Vancouver, BC · Kelowna, BC · Halifax, NS · Calgary, AB
- Full-time
We are seeking a hands-on Salesforce Platform and AI Engineer to design, build, and scale secure, data-driven solutions that advance CCS’s mission. This role combines Salesforce…
Added 1 day ago
HR
Software Analyst
Hitachi Rail
Toronto, ON
- Full-time
The Software Analyst contributes to the design, development, integration, and testing of low- to medium-complexity operationally critical and safety-critical software systems within the…
Added 1 day ago
ES
Program Manager - Supply Chain
EPAM Systems
Toronto, ON
- Full-time
…retail-specific supply chain technologies, including inventory management systems, warehouse management systems (WMS), order management systems (OMS), and transportation/logistics…
Added 1 day ago
MC
Program Chief Engineer – Spacecraft Satellite Systems (35863)
Myticas Consulting
Canada
- Full-time
Program Chief Engineer – Spacecraft / Satellite Systems
Added 1 day ago
MC
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL (35729)
Myticas Consulting
Ottawa, ON
- Full-time
We are seeking a Senior QA Engineer III with strong hands-on test automation and banking/financial services experience to support complex enterprise applications and integration…
Added 1 day ago
MC
FPGA Design & Validation Engineer – 4G 5G Radio (35952)
Myticas Consulting
Ottawa, ON
- Contract
FPGA Design & Validation Engineer – 4G/5G Radio Units
Added 1 day ago
MC
Coherent Optical Systems Engineer (35886)
Myticas Consulting
Ottawa, ON · Kanata, ON
- Full-time
We are seeking a Coherent Optical Systems Engineer to contribute to the design, development, characterization, and optimization of advanced coherent optical transceivers based on…
Added 1 day ago
MC
Senior Data Engineer Azure Data Factory Developer (35968)
Myticas Consulting
Toronto, ON
- Contract
Our client is seeking two Senior Data professionals to support a data engineering and integration initiative: one Data Engineer specializing in Databricks and Apache Spark, and one Azure…
Added 1 day ago
MC
Technical Consultant III (35732)
Myticas Consulting
Toronto, ON
- Full-time
Technical Consultant III (Software Engineer, Senior/Lead)

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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