Lightmatter
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Lightmatter
Photonic computing and interconnects for AI infrastructure
Photonic Computing
AI Hardware
Optical Interconnects
Machine Learning Acceleration
Silicon Photonics
Open roles at Lightmatter
76 open roles
Hardware Systems Technical Lead
Systems
Mountain View, CA
On-site
Lead
Full-time
$217,000 - $256,000
Paid Time Off
Equity
4 months ago
Sr. Staff Physical Design Timing Engineer (STA)
Engineering
Boston, MA
On-site
Staff
Full-time
$217,000 - $267,000
Paid Time Off
Equity
4 months ago
Senior Photonics Design Automation Engineer
Engineering
Boston, MA; Mountain View, CA
On-site
Senior
Full-time
$165,000 - $200,000
Paid Time Off
Equity
4 months ago
Staff / Sr. Staff Photonics Test Engineer
Systems
Mountain View, CA
On-site
Staff
Full-time
$187,000 - $220,000
Paid Time Off
Equity
5 months ago
Mechanical Design Engineer
Engineering
Mountain View, CA
On-site
Staff
Full-time
$135,000 - $212,000
Paid Time Off
Equity
5 months ago
Sr. Staff Photonics Systems Engineer
Engineering
Toronto, ON
On-site
Lead
Full-time
CA$185,000 - CA$217,000
Paid Time Off
Equity
5 months ago
Principal Digital (mixed-signal) Architect
Engineering
Toronto, ON
On-site
Senior
Full-time
CA$191,000 - CA$362,000
Paid Time Off
Equity
7 months ago
Sr. Staff Physical Design Timing Engineer (STA)
Design
Toronto, ON
On-site
Staff
Full-time
CA$191,000 - CA$220,000
Paid Time Off
Equity
7 months ago
Sr. Staff Physical Design Timing Engineer (STA)
Design
Mountain View, CA
On-site
Staff
Full-time
$220,000 - $270,000
Paid Time Off
Equity
7 months ago
Sr. Staff Physical Design Engineer
Engineering
Mountain View, CA
On-site
Staff
Full-time
$220,000 - $270,000
Paid Time Off
Equity
7 months ago
Staff Photonics Design Engineer- Compact Modeling
Engineering
Mountain View, CA
On-site
Staff
Full-time
$187,000 - $220,000
Paid Time Off
Equity
7 months ago
Staff Photonics Design Engineer- Compact Modeling
Engineering
Toronto, ON
On-site
Staff
Full-time
CA$138,000 - CA$171,000
Paid Time Off
Equity
7 months ago
Staff Photonics Design Engineer- Compact Modeling
Engineering
Boston, MA
On-site
Staff
Full-time
$179,000 - $219,000
Paid Time Off
Equity
7 months ago
Staff/Sr. Staff Design Verification Engineer
Engineering
Toronto, ON
On-site
Staff
Full-time
CA$148,000 - CA$175,000
Paid Time Off
Equity
7 months ago
Staff/Sr. Staff Design Verification
Design
Mountain View, CA
On-site
Staff
Full-time
$196,000 - $222,500
Paid Time Off
Equity
7 months ago
Staff/Sr. Staff Design Verification
Engineering
Boston, MA
On-site
Staff
Full-time
$186,000 - $218,000
Paid Time Off
Equity
7 months ago
Principal Digital (mixed-signal) Architect
Engineering
Boston, MA; Mountain View, CA
On-site
Staff
Full-time
$217,000 - $325,000
Paid Time Off
Equity
7 months ago
Principal Machine Learning Infrastructure Researcher
Machine Learning
Mountain View, CA
On-site
Staff
Full-time
Paid Time Off
Equity
7 months ago
Sr. Staff Photonics Systems Engineer
Operations
Boston, MA; Mountain View, CA
On-site
Lead
Full-time
$230,000 - $267,000
Paid Time Off
Equity
7 months ago
Analog IC Design Engineer, High-Speed
Design
Mountain View, CA
On-site
Mid Level
Full-time
$165,000 - $245,000
Paid Time Off
Equity
7 months ago
Analog IC Design Engineer, High-Speed
Design
Toronto, ON
On-site
Mid Level
Full-time
CA$135,000 - CA$180,000
Paid Time Off
Equity
7 months ago
Photonic Architect, Temp
Embedded
Toronto, ON
On-site
Mid Level
Full-time
Today
Staff Electrical Design Engineer
Engineering
Mountain View, CA
On-site
Staff
Full-time
$186,000 - $250,000
Today
New Product Introduction (NPI) Engineer
Manufacturing
Mountain View, CA
On-site
Mid Level
Full-time
$134,000 - $189,000
Today
Senior Photonics Circuit Design Engineer
Engineering
Mountain View, CA
On-site
Senior
Full-time
$150,000 - $200,000
Today
Electro-Optic Systems Architect
Design
Toronto, ON
On-site
Staff
Full-time
CA$185,000 - CA$241,000
Equity
Paid Time Off
Today
Electro-Optic Systems Architect
Design
Boston, MA; Mountain View, CA
On-site
Mid Level
Full-time
$212,000 - $326,000
Equity
Paid Time Off
Today
Photonics Architect
Design
Boston, MA; Mountain View, CA
On-site
Mid Level
Full-time
$212,000 - $321,000
Equity
Paid Time Off
Today
Staff/ Sr Staff Technical Program Manager, Hardware Systems
Product
Boston, MA
On-site
Staff
Full-time
$203,000 - $243,000
Equity
Paid Time Off
Today
Photonics Characterization Intern- Winter 2026
Operations
Boston, MA
On-site
Intern
Internship
$53 - $65
Equity
Paid Time Off
Today
Staff Photonics Design & PDK Modeling Engineer
Embedded
Boston, MA; Mountain View, CA; Toronto, ON
On-site
Staff
Full-time
$185,000 - $220,000
Today
Principal Product Manager, Photonics
Product
Mountain View, CA
On-site
Staff
Full-time
$226,000 - $317,000
Today
Sr SDET– Firmware Automation
QA
Toronto, ON
On-site
Senior
Full-time
Today
Senior Laser & SOA Characterization Engineer
Engineering
Mountain View, CA
On-site
Senior
Full-time
$210,000 - $265,000
Paid Time Off
Equity
Today
Staff/Sr Staff Technical Program Manager, Hardware Systems
Product
Mountain View, CA
On-site
Staff
Full-time
$189,000 - $210,000
Today
Photonics Architect
Design
Toronto, ON
On-site
Mid Level
Full-time
CA$118,000 - CA$171,000
Equity
Paid Time Off
Today
Sr. Staff Product Manager (Photonics)
Product
Boston, MA; Mountain View, CA
On-site
Staff
Full-time
$214,000 - $286,000
Equity
Paid Time Off
Today
Director, Photonics Hardware Validation
Operations
Mountain View, CA
On-site
Staff
Full-time
$261,000 - $300,000
Paid Time Off
Equity
Today
Photonics Architect
Engineering
Toronto, ON
On-site
Mid Level
Full-time
CA$118,000 - CA$171,000
Equity
Paid Time Off
Today
Staff Photonics Design and Layout Engineer
Engineering
Boston, MA; Mountain View, CA
On-site
Staff
Full-time
$175,000 - $230,000
Equity
Paid Time Off
Today
Analog/Mixed Signal Architect
Engineering
Boston, MA; Mountain View, CA
On-site
Mid Level
Full-time
$149,000 - $216,500
Equity
Paid Time Off
Today
Recruiting Coordinator (Temp)
Recruiting
Mountain View, CA
On-site
Mid Level
Full-time
$35 - $38
Equity
Paid Time Off
Today
Digital Architect
Solutions Architect
Boston, MA; Mountain View, CA
On-site
Mid Level
Full-time
$146,000 - $222,000
Equity
Paid Time Off
Today
Power Integrity Engineer
Engineering
Mountain View, CA
On-site
Mid Level
Full-time
$157,000 - $176,000
Equity
Paid Time Off
Today
Electrical Design Engineer
Engineering
Mountain View, CA
On-site
Mid Level
Full-time
$149,000 - $206,000
Equity
Paid Time Off
Today
Sr SDET– Firmware Automation
QA
Boston, MA; Mountain View, CA
On-site
Senior
Full-time
$178,000 - $225,000
Equity
Paid Time Off
Today
Staff Embedded Software Engineer
Embedded
Boston, MA; Mountain View, CA
On-site
Staff
Full-time
$175,000 - $220,000
Equity
Paid Time Off
Today
Staff/ Sr. Staff HW Test Automation Engineer
QA
Mountain View, CA
On-site
Staff
Full-time
$167,000 - $227,000
Equity
Paid Time Off
Today
Chip Firmware Validation Engineer
Embedded
Mountain View, CA
On-site
Mid Level
Full-time
$185,000 - $245,000
Equity
Paid Time Off
Today
Analog/Mixed Signal Architect
Engineering
Toronto, ON
On-site
Mid Level
Full-time
CA$124,000 - CA$177,000
Equity
Paid Time Off
Today
Electro-Optic Link Hardware Engineer
Operations
Mountain View, CA
On-site
Mid Level
Full-time
$155,000 - $190,000
Equity
Paid Time Off
Today
Embedded Software Engineer, Lasers
Embedded
Boston, MA
On-site
Mid Level
Full-time
$140,000 - $165,000
Equity
Paid Time Off
Today
Staff High-Speed I/O Test Engineer
QA
Mountain View, CA
On-site
Staff
Full-time
$187,000 - $220,000
Equity
Paid Time Off
Today
Sr Staff/Principal Laser Design Engineer
Engineering
Toronto, ON
On-site
Staff
Full-time
CA$185,000 - CA$233,000
Equity
Paid Time Off
Today
Package Layout Engineer
Embedded
Mountain View, CA
On-site
Mid Level
Full-time
$157,000 - $176,000
Equity
Paid Time Off
Today
Photonics Hardware Validation Engineer
Embedded
Mountain View, CA
On-site
Mid Level
Full-time
$177,000 - $240,000
Paid Time Off
Equity
Today
Foundry Engineer
Manufacturing
Mountain View, CA
On-site
Mid Level
Full-time
$180,000 - $212,000
Equity
Paid Time Off
Today
Staff/Sr Staff Electrical Design Engineer
Engineering
Mountain View, CA
On-site
Staff
Full-time
$186,000 - $250,000
Paid Time Off
Equity
Today
Staff/ Sr. Staff HW Test Automation Engineer
QA
Toronto, ON
On-site
Staff
Full-time
CA$122,000 - CA$171,000
Equity
Paid Time Off
Today
Sr Staff/Principal Laser Design Engineer
Engineering
Boston, MA; Mountain View, CA
On-site
Staff
Full-time
$212,000 - $320,000
Equity
Paid Time Off
Today
Staff/Sr Staff Electro-Optic Link Codesign Engineer
Design
Boston, MA; Mountain View, CA; Toronto, ON
On-site
Staff
Full-time
$180,000 - $260,000
Equity
Paid Time Off
Today
Staff Hardware Test & Bring-Up Engineer
QA
Mountain View, CA
On-site
Staff
Full-time
$167,000 - $193,000
Equity
Paid Time Off
Today
Signal Integrity Engineer
Engineering
Mountain View, CA
On-site
Mid Level
Full-time
$157,000 - $176,000
Equity
Paid Time Off
Today
Machine Learning Systems Researcher
Machine Learning
Mountain View, CA
On-site
Mid Level
Full-time
$186,000 - $240,000
Paid Time Off
Equity
Today
Mixed-Signal Validation Engineer
Engineering
Mountain View, CA
On-site
Mid Level
Full-time
$186,000 - $246,000
Equity
Paid Time Off
Today
Sr. Staff Thermo-Mechanical Engineer
Operations
Mountain View, CA
On-site
Staff
Full-time
$169,000 - $244,000
Equity
Paid Time Off
Today
Sr. Staff Physical Design Engineer
Engineering
Boston, MA
On-site
Staff
Full-time
$217,000 - $267,000
Equity
Paid Time Off
Today
Staff / Sr. Staff HW Test Automation Engineer
QA
Boston, MA
On-site
Staff
Full-time
$154,000 - $213,000
Equity
Paid Time Off
Today
Photonics Architect
Engineering
Boston, MA; Mountain View, CA
On-site
Mid Level
Full-time
$150,000 - $220,000
Equity
Paid Time Off
Today
Principal Hardware Systems Technical Lead
Engineering
Mountain View, CA
On-site
Staff
Full-time
$217,000 - $308,000
Equity
Paid Time Off
Today
Sr. Staff Physical Design Engineer
Engineering
Toronto, ON
On-site
Staff
Full-time
CA$191,000 - CA$219,000
Equity
Paid Time Off
Today
Staff /Sr Staff Laser Module & Systems Characterization Engineer
Engineering
Mountain View, CA
On-site
Staff
Full-time
$187,000 - $240,000
Equity
Paid Time Off
Today
Silicon Packaging Engineer - Intern & New Grad
Operations
Mountain View, CA
On-site
Intern
Internship
$40 - $67
Equity
Paid Time Off
Today
Digital Architect
Solutions Architect
Toronto, ON
On-site
Mid Level
Full-time
CA$123,000 - CA$175,000
Equity
Paid Time Off
Today
Principal Field Application Engineer
Sales Engineering
Mountain View, CA
On-site
Staff
Full-time
Equity
Paid Time Off
Today
Senior Account Manager
Account Management
Mountain View, CA
On-site
Senior
Full-time
Equity
Paid Time Off
Today
Closed positions
50 positions
Silicon, Hardware, & Photonics Engineering - Internship
Boston, MA; Mountain View, CA
Intern
Closed 3 weeks ago
Packaging Architect
Mountain View, CA
Mid Level
Closed 3 weeks ago
Silicon Packaging Engineer - Intern & New Grad
Mountain View, CA
Intern
Closed 1 month ago
Electro-Optic Link Hardware Engineer
Boston, MA; Mountain View, CA
Mid Level
Closed 1 month ago
Lead Package Assembly Integrator
Mountain View, CA
Lead
Closed 1 month ago
Products and services
PA
Passage
Hardware Platform
SI
Silicon Photonics Chips
Components
EN
Envise
AI Accelerator
PH
Photonic Fabric
Networking Infrastructure
OP
Optical I/O Technology
Technology
3D
3D-Stacked Memory Interconnects
Memory Technology
PH
Photonic Integration Platform
Software Development
AI
AI Acceleration Services
Services
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Latest updates
All
X
News
HN
YouTube
Lightmatter Guide: The Best Inventions of 2026 - Time Magazine
Time Magazine
News
·
1 week ago
Lightmatter Links with ODMs to Pave a Glide Path for CPO - Counterpoint Research
Counterpoint Research
News
·
1 week ago
Lightmatter and Flex Bring 204.8 Tbps Co-Packaged Optics Into Open Racks - The Futurum Group
The Futurum Group
News
·
1 week ago
Lightmatter packs a 204.8 Tbps optical switch into a single rack unit - Notebookcheck
Notebookcheck
News
·
1 week ago
Lightmatter reveals plans for its new technologies - Taipei Times
Taipei Times
News
·
1 week ago
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Total Apply Clicks
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Total Bookmarks
0
Reviews
4.2
37 reviews
Work-life balance
4.0
Compensation
3.9
Culture
4.1
Career
4.0
Management
3.6
82%
Recommend to a friend
Pros
Cutting-edge technology in silicon photonics
Hands-on learning environment
Outstanding mentorship opportunities
Cons
Management hostility toward feedback
High cash burn without revenue generation
No shipped products despite significant funding
Salary Ranges
65 data points
Mid-Level
1 reports
-
total per year
Base
CA$157,500
Stock
-
Mid-Level
3 reports
-
total per year
Base
$266,500
Stock
-
Contact and location