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Added 3 mins ago
T
Senior AI Engineer (GCP/Vertex AI) Contract
TekRek
Canada
- Contract
Work directly with business users to define requirements, test end to end and confirm each release solves the problem it was built for
Added 35 mins ago
CG
Martech/ Growth Engineer
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Toronto, ON
- Full-time
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Added 35 mins ago
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Associate Portfolio Manager, Credit Investing
Purpose
Toronto, ON
- Full-time
Stress-test models across base, downside, and tail-risk cases; assess liquidity and default probability with rigor
Added 50 mins ago
P&
Stage - Hiver 2027 - Développement Logiciel Avancé, Méthodes Numériques / Internship - Winter 2027 - Advanced Software Development, Numerical Methods
Pratt & Whitney
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- Full-time
Connaissance des frameworks de test Python tels que pytest
Added 50 mins ago
AC
Senior Programme Manager- Electrification
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Added 52 mins ago
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Demand Generation Manager
Guusto
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- Full-time
Test subject lines, content, and timing to drive click and conversion rates.
Added 1 hour ago
ZS
Quality Engineer / SDET – AI Chatbot Validation
Zodiac Solutions, Inc
Toronto, ON
- Full-time
Create and execute test scenarios, test cases, and regression test suites.
Added 1 hour ago
KG
QE / SDET – AI Chatbot & GenAI Validation
K&K Global Talent Solutions INC.
ON · Ontario, Canada
- Full-time
We are seeking an experienced Quality Engineer (QE) / SDET specializing in AI Chatbot Validation to lead the quality assurance, accuracy testing, and response analysis of our conversational…
Added 1 hour ago
II
Software Engineer
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Ottawa, ON
- Full-time
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Added 1 hour ago
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UI Engineer
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- Full-time
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Added 1 hour ago
GM
Senior Software Developer
General Motors
Markham, ON · Oshawa, ON
- Full-time
This role is for a hands-on senior engineer who can design, implement, test, deploy, and operate reliable backend systems at production scale. The developer will contribute across REST…
Added 1 hour ago
E
iOS Engineer - SE3
eBay
Toronto, ON
- Full-time
As an iOS Software Engineer on the Native Focused Category team, you'll contribute to building and improving features within eBay's core iOS application. You'll work primarily with Swift…
Added 1 hour ago
Staff Photonics Design & PDK Modeling Engineer
Lightmatter
Toronto, ON
We are hiring a Photonics PDK Modeling Engineer to join our team. In this role, you will develop our internal Process Design Kit (PDK). You will act as the architect of our component…
Added 2 hours ago
A
Embedded Software Engineer
Actalent
Mississauga, ON
- $70,000 to $85,000 CAD / year
- Full-time
The Embedded Software Engineer designs, develops, and maintains embedded computer system software for advanced military and naval applications, including control software for helicopter…
Added 2 hours ago
ZS
Quality Engineer / SDET – AI Chatbot Validation
Zodiac Solutions, Inc
Toronto, ON
- Full-time
Job TitleQuality Engineer (QE) / SDET – AI Chatbot ValidationKey Roles & Responsibilities• Validate chatbot responses for accuracy, relevance, completeness, and consistency.• Create and…
Added 2 hours ago
A
Test/Lab Engineer
Actalent
Waterloo, ON
- $33 to $38 CAD / hour
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Our client in the automotive industry, is looking to hire a Test/Lab Engineer.
Added 2 hours ago
A
SDET (Intermediate)
Actalent
Waterloo, ON
- $40 to $50 CAD / hour
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This Software Development Engineer in Test (SDET) role focuses on designing, developing, and maintaining automated test scripts and tools in Python to validate new features for advanced…
Added 2 hours ago
JW
Software Engineer, Tokenization
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- Full-time
As a Software Engineer, you'll build and own backend services that make tokenized equities work end to end - issuance, custody, and settlement on-chain, kept in sync with traditional…
Added 2 hours ago
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Senior Software Engineer, Web3 Backend
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- Full-time
As a Senior Software Engineer, you’ll architect, build, and scale the backend services, infrastructure, and data systems that support Robinhood’s next-generation crypto, web3, and wallet…
Added 2 hours ago
CG
Martech/ Growth Engineer
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Toronto, ON
- $180,000 to $230,000 USD / year
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We’re looking for a MarTech / Growth Engineer to sit at the intersection of Marketing, Engineering, Data, Product, and Operations.
Added 2 hours ago
L
Staff Photonics Design & PDK Modeling Engineer
Lightmatter
Toronto, ON
- Full-time
We are hiring a Photonics PDK Modeling Engineer to join our team. In this role, you will develop our internal Process Design Kit (PDK). You will act as the architect of our component…
Added 3 hours ago
HC
Research Engineer
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- Full-time
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Added 3 hours ago
M
Senior Software Engineer, Device & Data Platform
Mecka
Richmond Hill, ON
- $180,000 to $210,000 CAD / year
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Test complete user workflows end to end, and maintain documentation, monitoring, and backward compatibility as the platform evolves.
Added 4 hours ago
A
Senior Verification Engineer - Security
Arm
Toronto, ON
- Full-time
As a creative problem solving Security and Embedded Processor Verification Engineer, you will be part of a team that will define and realize the Hardware Security IP and Subsystem. We will…
Added 4 hours ago
Senior Software Engineer, Web3 Backend
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Lightmatter

Staff Photonics Design & PDK Modeling Engineer

Toronto, ON, Canada

$185,000 - $220,000 USD

Apply About employer

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Job details

Pay: $185,000 - $220,000 USD
Experience: Master’s +5 years experience or PhD +3 years experience in Electrical Engineering, Photonics, Physics, or related field.
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!

We are hiring a Photonics PDK Modeling Engineer to join our team. In this role, you will develop our internal Process Design Kit (PDK). You will act as the architect of our component library, bridging the gap between photonics device design and system-level verification. You will develop robust compact models for active and passive components, ensuring that our simulation environment accurately predicts the behavior of our physical layouts. You will work heavily in Python, EDA tools, applying software engineering rigor to the challenges of photonic hardware design.

Responsibilities

Develop and maintain a library of pcells using Python-based frameworks. Ensure strict synchronization between physical layout, logical netlists, and behavioral models.
Create and verify physics based behavior models for passive and active devices.
Design test structure, develop test plans for device FOMs extraction. Work with test engineers to get silicon data.
Validate models against lab measurements. Perform data fitting and statistical analysis to align model parameters with real-world silicon performance.
Automated Verification: Implement regression testing and Continuous Integration (CI) pipelines to ensure PDK updates do not break legacy designs or connectivity logic.
Actively collaborate with design, analog, digital and architecture engineers to deliver high impact tape-outs

Qualifications

Master’s +5 years experience or PhD +3 years experience in Electrical Engineering, Photonics, Physics, or related field.
Deep understanding of photonic device physics and experience in device simulation.
Experience building behavioral models for circuit simulators (e.g., Lumerical INTERCONNECT, Cadence, Synopsys OptSim, or custom Python solvers).
Experienced in Python for modeling, automation, and data analysis. Comfortable with object-oriented programming and scientific libraries (NumPy, SciPy).
Python based layout experience.
Demonstrated strong problem solving skills for problems without obvious solutions

Preferred Qualifications

Proficiency with python-based layout tools such as gdstk, GDSFactory, and KLayout
Experience with Python-native circuit simulation ecosystems (e.g., SAX, Photontorch, Simphony).
Experience with verilogA/spectre equivalent circuit modeling for photonics device
Prior experience in using foundry-provided process design kits (PDKs), adhering to specific design rules and constraints, well understanding of DRC, LVS, etc.
Experience working on large-scale designs using industry standard environments such as Cadence Virtuoso
Experience in taping out and testing large-scale photonic integrated circuits, including familiarity with relevant testing equipment and methodologies.
Possess strong project execution skills, demonstrating the ability to effectively manage multiple design priorities, adhere to project timelines, and meet critical milestones.

We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

Salary Range: total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.

$185,000 - $220,000 USD

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

You will develop and maintain internal Process Design Kits (PDKs) and act as the architect for component libraries to bridge device design and system-level verification. Additionally, you will create physics-based behavioral models, automate verification pipelines, and collaborate with cross-functional engineering teams to deliver high-impact tape-outs.

Requirements

Candidates must hold a Master's degree with 5+ years of experience or a PhD with 3+ years of experience in Electrical Engineering, Photonics, or Physics. Proficiency in Python, device simulation tools, and experience with photonic device physics and layout design are required.

Skills

Photonics
PDK Development
Python
Device Physics
Circuit Simulation
Lumerical Interconnect
Cadence Virtuoso
GDSFactory
KLayout
Object-oriented Programming
Data Analysis
Statistical Analysis
Continuous Integration
Regression Testing
Photonic Integrated Circuits
VerilogA

Benefits

Comprehensive Health Care Plan
Life Insurance
Generous Time Off
Paid Family Leave
Short Term Disability
Long Term Disability
Training & Development
Commuter Benefits
Flexible, Hybrid Workplace Model
Equity Grants

Visa sponsorship

Not detected in the job text

Keywords

Photonics
PDK
Process Design Kit
Python
Lumerical
Cadence
Synopsys OptSim
NumPy
SciPy
Gdstk
GDSFactory
KLayout
SAX
Photontorch
Simphony
VerilogA
Spectre
DRC
LVS
Tape-out
Photonic Integrated Circuits
Continuous Integration
Regression Testing
Device Physics
Behavioral Modeling
Circuit Simulation
Data Fitting
Statistical Analysis
Object-oriented Programming
Automation

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