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Added 8 hours ago
Field Application Engineer (Integrated Photonics)
Axiomatic_AI
Toronto, ON
We are seeking an experienced Field Application Engineer with expertise across the PIC development lifecycle - from device and circuit design through simulations, tapeout, characterization,…
Added 1 day 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 1 day ago
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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 1 day ago
Sr SDET– Firmware Automation
Lightmatter
Toronto, ON
…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…
Added 1 day ago
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Sr SDET– Firmware Automation
Lightmatter
Toronto, ON
- Full-time
…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…
Added 2 days ago
HW & SW Applications Admin 1
Celestica International LP
Toronto, ON
We are seeking a highly technical, execution-focused Hardware & Software Engineering Applications System Administrator to support the core engineering applications environment for the…
Added 2 days ago
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HW & SW Applications Admin 1
Celestica
Toronto, ON
- Full-time
We are seeking a highly technical, execution-focused Hardware & Software Engineering Applications System Administrator to support the core engineering applications environment for the…
Added 4 days ago
MC
Coherent Optical Systems Engineer (35886)
Myticas Consulting
Ottawa, ON · Kanata, ON
- Full-time
The successful candidate will work with early-stage PIC, DSP, and analog ASIC hardware to perform digital-optical integration, develop calibration and control methodologies, and conduct…
Added 7 days ago
CT
Principal Systems Engineer - Optical Transceivers
ConsultNet Technology Services and Solutions
Ottawa, ON
- Other
Experience with silicon photonics and optical component integration
Added 17 days ago
C
Photonics RLS Senior Engineer
Ciena
Ottawa, ON
- Full-time
As part of Ciena’s Modem and Photonics Lifecycle Management (LCM) organization, this senior engineering role contributes to the development and optimization of test systems supporting…
Added 17 days ago
PI
Senior Foundry Integration Engineer
Photonic Inc.
Coquitlam, BC
- $117,000 to $161,000 CAD / year
- Full-time
We are seeking an experienced Senior Foundry Process Integration Engineer to lead the development and maturation of our silicon photonic fabrication processes through close partnership with…
Added 25 days ago
J
Principal Systems Engineer -Optical Transceivers
Jabil
Ottawa, ON · CAN - Ottawa
- Full-time
We are seeking a Principal Systems Engineer to lead the development of next-generation optical transceivers for hyperscale data center and AI networking applications. This individual will…
Added 1 month ago
X
Lead Engineer - Laser Systems
Xanadu
Toronto, ON
- Full-time
The Lead Engineer will architect and build the ultra-stable, low-noise laser engines powering the world’s first fault-tolerant photonic quantum computers, acting as both a system architect…
Added 1 month ago
X
Photonics Engineer - Systems Integration
Xanadu
Toronto, ON
- Full-time
We are looking for a hands-on, analytical, and driven Photonics Engineer to join our hardware team and accelerate the development of our Fault-Tolerant Quantum Computing (FTQC) systems. If…
Added 1 month ago
X
Senior Analog ASIC Design Engineer
Xanadu
Toronto, ON
- Full-time
Cross-Functional Collaboration: Partner with our photonics, packaging, and systems teams to co-design and solve system-level integration challenges.
Added 1 month ago
RI
Optical Engineer
RANOVUS Inc.
Ottawa, ON
- Other
We are seeking a motivated and talented Optical Engineer to join our Optical System Integration/ Verification team. The successful candidate would implement and test electrical and optical…
Added 1 month ago
Q
DSP Application Engineer, Staff
Qualcomm
Ottawa, ON
- Full-time
We are seeking a Staff DSP Application Engineer to support customer adoption and deployment of next-generation DSP solutions in Optical Transceivers and Active Electrical Cables (AEC) for…
Added 1 month ago
L
Staff/Sr Staff Electro-Optic Codesign Engineer
Lightmatter
Toronto, ON
- Full-time
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…
Added 1 month ago
Staff/Sr Staff Electro-Optic Link Codesign Engineer
Lightmatter
Toronto, ON
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…
Added 1 month ago
R
Optical Engineer
Ranovus
Ottawa, ON
- Full-time
We are seeking a motivated and talented Optical Engineer to join our Optical System Integration/ Verification team. The successful candidate would implement and test electrical and optical…
Added 2 months ago
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Coherent Systems Architect - Optical Modem Development and Optimization
Nokia
Ottawa, ON · Kanata, ON
- Full-time
Nokia is seeking a Coherent Optical Systems Engineer to join our Optical Systems Group (OSG). The engineer will be responsible for contributing to the design, characterization, and…
Added 3 months ago
SF
Technical Research Scientist
Simon Fraser University
Burnaby, British Columbia
- Full-time
Experience in system integration, network deployment, or field demonstrations.
Added 3 months ago
X
Photonics Engineer - Experimentalist
Xanadu
Toronto, Ontario
- 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 5 months ago
L
Analog IC Design Engineer, High-Speed
Lightmatter
Toronto, Ontario
- Temporary
Collaborate with members of our design engineering teams (system, digital, analog, photonics) to define electrical requirements
Added 1 month ago
Q
DSP Application Engineer, Principal
Qualcomm
Ottawa, ON
- Full-time
We are seeking a Principal DSP Application Engineer to drive customer adoption and deployment of next-generation DSP in the Optical Transceiver and Active Electrical Cable (AEC) solutions…

Lightmatter

Staff/Sr Staff Electro-Optic Codesign Engineer

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Feb 21, 2027
Posting language: English
Posted: Aug 25, 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 LSAE 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 USD - $240,000 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

Own the end-to-end simulation, co-design, and laboratory verification of photonic-electronic links for the Passage engine. Develop high-fidelity multi-physics models to link optical device performance to system-level BER and link margin.

Requirements

Requires a PhD in EE, Physics, or related field with 5+ years of experience, or an MS with 8+ years of industry experience in photonic ICs or transceivers. Must be proficient in photonic simulation tools, high-speed lab equipment, and Python scripting.

Skills

Photonic Device Modeling
Electro-Optic Link Simulation
VPI Photonics
Lumerical FDTD/INTERCONNECT
Cadence Virtuoso/Spectre
Verilog-A
Python
Vector Network Analyzers
Optical Spectrum Analyzers
BER Test Sets
Link Budgeting
SERDES Architecture
Silicon Photonics
Analog Circuit Design
Corner Analysis
Monte Carlo Simulation

Benefits

Comprehensive Health Care Plan (Medical, Dental & Vision)
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

Visa sponsorship

Not detected in the job text

Keywords

Silicon Photonics
Electro-Optics
Passage
WDM
Photodetectors
Modulators
Optical Amplifiers
Coherent Modulation
Intensity-Modulated
SNR
OSNR
PVT Studies
S-parameter
OMA
FFE
DFE
CTLE
CDR
Mixed-Signal PHY
CPO
NPO
Optical I/O
DSP
FEC
PAM-4
NRZ
PDK
Post-silicon Characterization
HPC
AI Infrastructure

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