
Semiconductor foundry
Principal Engineer Silicon Photonics at GlobalFoundries
About the role
About Global Foundries
GlobalFoundries (GF) is a leading full-service semiconductor foundry providing a unique combination of design, development, and fabrication services to some of the world’s most inspired technology companies. With a global manufacturing footprint spanning three continents, GF makes possible the technologies and systems that transform industries and give customers the power to shape their markets. For more information, visit www.gf.com
Key Responsibilities
- Perform design and layout of photonic devices, circuits and subsystems for next generation of Optical Engines
- Perform advanced optical, thermal, and RF modeling and simulations to guide design decisions and technology development
- Evaluate, debug and refine fabricated photonic devices and circuits based on characterization results
- Contribute to design reviews, documentation, and methodology improvements • Contribute to IP generation and technology roadmaps
- Collaborate with other teams to enable control and integration of photonic circuits into advanced systems
Required Qualifications
- PhD in Electronics and Communication Engineering or a relevant discipline with focus on Silicon Photonics or Integrated Optics
- 7+ years of relevant experience in silicon photonics or closely related domains
- Strong foundation in physics, electromagnetics, and integrated optics
- Deep understanding of silicon photonics fabrication, packaging, and testing
- Proven hands-on experience in design and layout of passive and active photonic devices and circuits
- Advanced modeling and data analysis skills using MATLAB and/or Python
- Proficiency with photonic design and simulation tools (e.g., Lumerical, Tidy3D)
- Experience with hybrid photonic platforms (e.g., InP/Si, TFLN) is a strong advantage
What we offer
- Base Salary
- Equity
- Annual Bonus Plan
- Medical Insurance
Information about our benefits you can find here: https://gf.com/careers/opportunities-in-europe/
Required skills
Silicon photonics
Integrated optics
Optical simulation
RF modeling
Thermal modeling
Device characterization
Layout design
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About GlobalFoundries

GlobalFoundries
PublicGlobalFoundries Inc. is a multinational semiconductor contract manufacturing and design company domiciled in the Cayman Islands and headquartered in Malta, New York.
10,001+
Employees
Santa Clara
Headquarters
$25.1B
Valuation
Reviews
10 reviews
3.5
10 reviews
Work-life balance
3.2
Compensation
3.8
Culture
3.9
Career
3.1
Management
3.0
65%
Recommend to a friend
Pros
Good benefits and health coverage
Supportive management and culture
Challenging and innovative projects
Cons
Work-life balance challenges and long hours
Limited growth and career opportunities
Management and communication issues
Salary Ranges
41 data points
Junior/L3
Junior/L3 · Venture Capitalist
0 reports
$89,550
total per year
Base
-
Stock
-
Bonus
-
$76,118
$102,983
Interview experience
51 interviews
Difficulty
3.3
/ 5
Duration
14-28 weeks
Offer rate
36%
Experience
Positive 68%
Neutral 20%
Negative 12%
Interview process
1
Phone Screen
2
Technical Interview
3
Hiring Manager
4
Team Fit
Common questions
Technical skills
Past experience
Team collaboration
Problem solving
Latest updates
GlobalFoundries’ Isabelle Ferain and Kylee Coffey honored with 2026 STEP Ahead Awards for manufacturing excellence - GlobalFoundries
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