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Added 3 months ago
HP
Software Developer - Data and AI (12 month contract)
Hammond Power Solutions
Guelph, ON
- Full-time
…transformer technology. We currently have an opening for a Software Developer, Data and AI– 12 month contract, come grow with…
Added 2 months ago
UH
Student, Admin Support (Research)
University Health Network
Toronto, ON
- Contract
UHN is Canada’s #1 hospital and the world’s #1 publicly funded hospital. With 10 sites and more than 44,000 TeamUHN members, UHN consists of Toronto General Hospital, Toronto Western…
Added 5 months ago
S
Forward Deployment Engineer
SymphonyAI
UNAVAILABLE, Ontario
- Full-time
…guiding new clients through a smooth and successful integration with our SaaS platform and implementations on client premises. You will leverage your knowledge of modern development,…
Added 2 months ago
M(
Senior Applied Machine Learning Engineer - Asset Intelligence
MaintainX (An Autodesk Company)
Remote, Canada
- $123,000 to $180,000 CAD / year
- Full-time
- Remote
Expertise in Python, and strong familiarity with PyTorch, TensorFlow, and cloud ML stacks (AWS, Databricks, or similar).
Added 2 months ago
CA
AI Engineer
Cambio AI Inc.
Remote, Canada
- Full-time
- Remote
…commercial real estate owners bring their portfolios to net-zero with an AI-driven sustainability, asset, and investment management platform. We're backed by Y Combinator, Google, and…
Added 2 months ago
R
Senior Technical Support Engineer (T3)
Rewind
Remote, Canada
- $100,000 to $120,000 CAD / year
- Full-time
- Remote
We embrace the fast-paced, ever-changing nature of startup life. If you love working with speed, agility, and creativity, you’ll feel right at home here. Here's what it takes to succeed…
Added 5 months ago
IE
Software Development Engineer in Test
Intercontinental Exchange Holdings, Inc.
Calgary, AB
- Full-time
Work with industry leading test automation tools: Java, Junit, Cucumber, Cypress utilizing JavaScript, Selenium utilizing Java and Python; Custom Python Frameworks; API testing tools
Added 4 months ago
AM
SoC DFX Scan / ATPG Engineer
Advanced Micro Devices, Inc
Markham, ON
- Full-time
Experience with scripting languages such as Python, Perl, Tcl, or Shell.
Added 2 months ago
AM
IP Post-Silicon Validation Lead
Advanced Micro Devices, Inc
Markham, ON
- Full-time
…knowledge and skills of the team around you. You are a self-starter with strong analytical and problem-solving skills and are willing to learn and ready to independently drive tasks to…
Added 2 months ago
AM
Sr. Systems Design Engineer - Data Center GPU
Advanced Micro Devices, Inc
Markham, ON
- Full-time
Debugging hardware and system-level issues found during bring-up, validation, and production phases of SOC programs, with a focus on system IP blocks such as DMA engines, interrupt…
Added 2 months ago
AM
Design Verification Engineer
Advanced Micro Devices, Inc
Markham, ON
- Full-time
Familiarity with Makefiles, scripting languages like perl, python, ruby etc.
Added 4 months ago
FH
Data Scientist
Fraser Health
Surrey, BC
- Full-time
…(CAADSI) team at the Central City office located in Surrey, B.C. with flexible work…
Added 2 months ago
Lead Software Engineer
Momentum Financial Services Group
Toronto, ON
…by reimagining how money works for those who need it most. With more than 40 years of experience, we’re the team behind Money Mart - Canada’s largest non-bank branch network - and a leader…
Added 2 months ago
GD
Cybersecurity Associate Specialist
General Dynamics Land Systems–Canada
London, ON
- Full-time
Strong with C, C++, C#, and Python programming languages
Added 2 months ago
MG
QA Tester
Maplesoft Group, an SEB Company
Ottawa, ON
- Contract
Hands-on Databricks testing experience with Python/PySpark
Added 1 month ago
Staff/Sr Staff Electro-Optic Link Codesign Engineer
Lightmatter
Toronto, ON
Lightmatter is (re)inventing the future of computing with light!
Added 2 months ago
A
Ingénieur de données Databricks / Data Engineer Databricks
Avanquest
Montreal, QC
- Full-time
We're growing fast, and we're hungry for more. With teams across North America and Europe, we tap into a wide range of perspectives to push our thinking further. AI isn't a buzzword here,…
Added 5 months ago
K
Senior Manager, Financial Crimes- Data Analytics
KPMG
Ottawa, ON · Toronto, ON · Montreal, QC
- Full-time
…develop skills for the future, and take ownership of your career with support at every stage. Join a firm where your career can make a…
Added 2 months ago
Senior Release Engineer
Questrade Financial Group
Toronto, ON
This is a high-impact, hybrid release engineering role bridging global enterprise platform standards with the specialized technical needs of our high-speed brokerage systems. You will own,…
Added 2 months ago
Senior Analytics Engineer (m/f/d)
AutoTrader.ca
Toronto, ON
…Canada and CMS - help Canadians buy, sell, and finance vehicles with…
Added 2 months ago
M
Director Data Engineering
McKesson
Mississauga, ON
- Full-time
…managing high-performing teams, and aligning data strategy with business objectives while managing large-scale data products built on modern data stack. This role involves collaborating…
Added 2 months ago
D
Manager, Data Architect
dentsu
Toronto, ON
- Full-time
Lead complex Azure Data Factory, Azure SQL, Power BI, Logic App and Python development.
Added 2 months ago
Senior Developer, Fullstack - Python
Appnovation Technologies
Toronto, ON
As a Senior Developer, Fullstack (AI & Data Platform), you will join a highly motivated and experienced team building agent-enabled applications and backend automation that turn catalogue…
Added 2 months ago
PF
Ingénieur·e senior en implantation | Senior Implementation Engineer
Power Factors
Remote, Canada
- Remote
Connaissance des langages de script tels que Python ou Bash.
Added 2 months ago
FL
Data Engineer (Databricks)
Fluent, LLC
Remote, Canada
- Full-time
- Remote
You are known as a strong and efficient IC Data Engineer, with the ability to assist in designing engineering solutions, data modeling, and building architecture. You are familiar with the…

Lightmatter

Staff/Sr Staff Electro-Optic Link Codesign Engineer

Toronto, ON, Canada

$180,000 - $260,000 USD

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Job details

Pay: $180,000 - $260,000 USD
Posting language: English
Posted: Sep 3, 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 seeking a Sr. Staff Engineer, Photonic Link Co-Design to join our Laser Systems Architecture & Engineering team. This is one of the most technically demanding roles at Lightmatter: you will own the end-to-end simulation, co-design, and laboratory verification of photonic-electronic links in Passage™ - from photonic device modeling through to full transceiver channel characterization in silicon.

You will build and maintain the high-fidelity simulation infrastructure that links optical device performance to system-level BER and link margin, drive co-design between photonic and analog circuit teams, and close the loop between simulation and lab measurement on every tape-out. This role sits at the center of how Lightmatter ensures Passage links meet performance at every process corner - and is the technical anchor for photonic-electronic integration quality.

The right candidate is equally fluent in photonic simulation environments and at a high-speed electro-optic lab bench, and has the seniority to drive architecture decisions with data.

Responsibilities

Develop, own, and continuously improve electro-optic link simulation models covering photonic device, propagation, and channel BER - from electron to photon to electron.
Build multi-physics models that combine optical propagation (VPI Photonics, Lumerical INTERCONNECT / FDTD, sax), analog circuit behavior (Cadence Virtuoso / Spectre, Verilog-A)) into a coherent link analysis framework.
Execute comprehensive corner analysis, Monte Carlo variation sweeps, and process-voltage-temperature (PVT) studies to bound link margin; generate actionable specification tightening recommendations for device and circuit teams.

Work closely with analog circuit designers to co-optimize transmitter driver and receiver front-end for the photonic device interface; drive joint simulation across the optical-electrical boundary.
Contribute to photonic link budgets end-to-end: optical power, modulation efficiency, receiver sensitivity, noise floor, and SNR/OSNR margins.

Contribute to simulation-to-silicon closure methodology for Passage optical links; author test protocols, define measurement sequences, and iterate link models against measured data across process splits and device corners.
Identify and diagnose root causes of link performance gaps - distinguishing photonic, electrical, and integration origins - and drive corrective design actions.

Author and review photonic link architectural specifications, co-design interface requirements, and design-entry criteria for photonic and circuit teams.
Contribute to Passage product-level link planning: propose photonic and electronic co-design opportunities to improve link margin, power efficiency, or yield.

Requirements:

PhD in Electrical Engineering, Applied Physics, Physics, or a closely related photonics/optics discipline and 5+ years of experience; or MS + 8 years of directly relevant industry experience at a photonic IC, transceiver, or optical interconnect company.
Deep expertise in photonic device physics and system-level optical link design: silicon photonic modulators, Ge photodetectors, passive WDM components, optical amplifiers, and coherent or intensity-modulated link topologies.
Hands-on proficiency with photonic simulation: VPI Photonics, Lumerical FDTD / INTERCONNECT, or equivalent optical propagation and circuit co-simulation tools.
Experience with analog and mixed-signal simulation: Cadence Virtuoso / Spectre, Verilog-A behavioral modeling, or Keysight ADS for electrical-optical co-simulation.
Demonstrated experience developing and executing optical link budgets, corner analyses, and simulation-to-measurement closure workflows.
Demonstrated high-speed lab skills: vector network analyzers (VNA) / S-parameter characterization, optical spectrum analyzers, high-bandwidth real-time oscilloscopes, BER test sets, optical modulation analyzers (OMA), and optical power meters.
Proficiency in Python for simulation scripting, measurement automation, and statistical post-processing.
Excellent written and verbal communication; able to drive architecture and specification discussions with device and circuit teams.
Familiarity with SERDES architecture: equalization topologies (FFE, DFE, CTLE), CDR, and mixed-signal PHY co-design for high-speed interfaces.

Preferred Qualifications

Silicon photonics tape-out and post-silicon characterization experience; familiarity with PDK-level device models and extracted simulation vs. measurement correlation.
Exposure to co-packaged optics (CPO), near-package optics (NPO), or optical I/O chiplet integration challenges.
Signal processing knowledge: DSP for optical communications, forward error correction (FEC), or PAM-4 / NRZ / coherent modulation format trade-offs and simulation.
Experience with Monte Carlo and statistical design methodologies in the context of photonic-electronic system co-design.

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.

$180,000 - $260,000 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

The engineer will own the end-to-end simulation, co-design, and laboratory verification of photonic-electronic links within the Passage™ platform. They will drive collaboration between photonic and analog circuit teams to ensure performance across all process corners.

Requirements

Candidates must hold a PhD in a relevant field with 5+ years of experience, or an MS with 8+ years of industry experience. Deep expertise in photonic device physics, high-speed lab characterization, and simulation tools like VPI Photonics and Cadence is required.

Skills

Photonic device physics
System-level optical link design
Silicon photonics
VPI Photonics
Lumerical FDTD
Cadence Virtuoso
Verilog-A
Python
Vector network analyzers
Optical spectrum analyzers
BER test sets
SERDES architecture
Monte Carlo analysis
Signal processing
Optical interconnects
Mixed-signal simulation

Benefits

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

Visa sponsorship

Not detected in the job text

Keywords

Photonics
Silicon Photonics
Electro-Optic
Co-design
Transceiver
BER
Link Margin
Cadence Virtuoso
Spectre
Verilog-A
Lumerical
VPI Photonics
Python
VNA
SERDES
DSP
PAM-4
Co-packaged optics
Chiplet
Monte Carlo
PVT
Optical I/O
Data Center
AI Infrastructure
HPC
Passage
Photonic IC
Mixed-signal
PHY
Simulation

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