2mo
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Si Photonics Design Engineer - Fremont, California, United States
Fremont, California, United States
$150k-$225k/yr OnsiteFull Time
2+ YOEMaster's in Electrical Engineering or Physics; 2+ years silicon photonics design; experience with photonic devices and CMOS backend; familiarity with Lumerical, COMSOL, and FIMMPROP
Lumerical, COMSOL, FIMMPROP
2mo
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RF/Plasma Engineer 3 (Fremont, CA)
Fremont, California, United States
$119k-$220k/yr HybridFull Time
5+ YOEMinimum 5 years of related experience with a Bachelor's; expertise in RF delivery systems and RF measurement equipment; high-voltage knowledge; proficiency with SPICE, LabView, HFSS/Comsol/MATLAB.
SPICE, LabView, HFSS, Comsol, Microwave Studio, MATLAB
1mo
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Simulation Engineer
San Carlos, California, United States
$120k-$204k/yr OnsiteFull Time
5+ YOEBachelor's or Master's in Mechanical/Aerospace engineering, 5+ years simulation experience (thermal/structural/dynamics), proficiency with ANSYS/Abaqus/COMSOL/MSC Adams, experience validating models with test data.
ANSYS, Abaqus, COMSOL, MSC Adams, Python, MATLAB
2mo
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Cryogenics Engineer (f/m/d)
Darmstadt or San Francisco
OnsiteFull Time
3+ YOEMSc or PhD in engineering or physics, 3+ years thermal & fluids cryogenics analysis (or equivalent PhD research), experience with cryogenic systems (hydrogen preferred), thermal modeling (Thermal Desktop, COMSOL), and mentoring/leading projects.
Thermal Desktop, COMSOL
2w
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Staff Thermal Simulation Engineer
Berkeley, California, United States
$166k-$194k/yr OnsiteFull Time
8+ YOEPhD/MS/Bachelor in relevant field with industry experience (Bachelor+8+ years), deep CFD and thermal-fluid expertise, experience with Ansys Fluent/Star-CCM+/Comsol, Python or MATLAB scripting, and translating simulation to design.
Ansys Fluent, Star-CCM+, Comsol Multiphysics, Python, MATLAB
19h
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Electromagnetic Engineer
Palo Alto, California, United States
OnsiteFull Time
3+ YOEExperience in electromagnetic modeling and magnetics, simulation software (MagNet, Comsol, Ansys), hands-on lab validation, MS degree in Electrical Engineering, minimum 3 years related experience, regulatory standards knowledge, written and oral reporting.
Infolytica MagNet, Comsol, Ansys
2mo
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Mechanical Engineer 2
Fremont, California, United States
$73k-$159k/yr OnsiteFull Time
3+ YOEBachelor's in Mechanical or Mechatronics Engineering (Master's or 3 years experience for level 2). 3D CAD (CREO, NX), FEA (Creo Simulation, COMSOL), prototyping, test design, machining and sheetmetal familiarity; strong communication and problem solving.
CREO, NX, Creo Simulation, COMSOL
4d
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Materials Research Scientist/Engineer
Menlo Park, California, United States
$116k-$172k/yr OnsiteFull Time
0+ YOEPhD in physics/optics/EE or related, 0-2 years relevant experience, experience with full-wave EM modeling (Ansys HFSS or COMSOL Multiphysics), familiarity with inverse design/ML a plus, U.S. citizenship and ability to obtain DoD clearance.
Ansys HFSS, COMSOL Multiphysics
1mo
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RF and YIG Design Engineer
Santa Rosa, California, United States
$124k-$207k/yr OnsiteFull Time
6+ YOEBS/MS/PhD in Electrical Engineering or Physics, 6+ years relevant experience; strong RF/microwave theory, magnetics, and hands-on RF measurement experience; proficiency with RF simulation tools (ADS, EMPro, CST, HFSS, COMSOL); ability to lead technical investigations.
ADS, EMPro, CST, HFSS, COMSOL, network analyzers, spectrum analyzers, signal analyzers, Mentor, KiCad, C#, Python
2w
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Lead Photonics Integrated Circuit Engineer
San Francisco or United States
HybridFull Time
PhD in physics/EE with deep expertise in quantum photonics, semiconductor process integration, PIC design/tape-out, modelling and characterization; experience with Cadence Virtuoso, verification flows and photonic simulation tools.
C++, Python, SKILL, TCL, HDL, MATLAB, Lumerical, COMSOL, MEEP, Cadence Virtuoso, Calibre, Hercules, ICV, Dracula, Primeyield, Verilog-A
2mo
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Senior Integrated Photonics Engineer - Active Devices and Circuits
Palo Alto, California, United States
$150k-$185k/yr OnsiteFull Time
3+ YOEMS or PhD in electrical engineering, optical/photonic fields; 3+ years in integrated photonics; expertise in electro-optic phase shifters and modulators; design, modeling, testing of photonic devices; experience with industry tools; strong data analysis and cross-functional collaboration.
Ansys Lumerical, Tidy3D, COMSOL Multiphysics, Meep, Lumerical Interconnect, SAX, HFSS, ADS, IPKISS, GDSFactory, Python, MATLAB
1mo
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Mechanical Architect - Rack, System and Enclosure Design
Oregon or Fremont or Clearwater
$130k-$160k/yr OnsiteFull Time
10+ YOEBachelor's degree in mechanical engineering, 10+ years designing racks/servers/enclosures, expertise in 3D CAD (SolidWorks, Creo, Inventor), FEA/CFD, thermal/structural analysis, and manufacturing processes.
CAE, SolidWorks, ANSYS, COMSOL, Creo, Inventor, PLM
2mo
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Research Engineer
Palo Alto, California, United States
$120k-$140k/yr OnsiteFull Time
0+ YOEDesign and build hardware/software systems; develop prototypes; integrate hardware, software, and control components; perform engineering tests.
MATLAB, Python, COMSOL, ANSYS
3mo
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Electrochemical Engineering Postdoctoral Scholar
Berkeley, California, United States
$7k-$8k/mo OnsiteFull Time
0+ YOEPhD in chemical engineering, mechanical engineering, applied physics, or closely related field; experience with mathematical modeling of electrochemical systems; HPC/AI/ML experience; strong communication; ability to collaborate and work independently.
Mathematical modeling, Multiphysics simulation, AI/ML, High Performance Computing, Comsol Multiphysics
1w
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Senior Pulsed Power Engineer
Fremont, California, United States
$170k-$210k/yr OnsiteFull Time
5+ YOE5+ years designing and operating pulsed power systems; expertise in high-voltage/current architectures, controls, diagnostics, PLC development, vacuum systems, circuit simulation, and data analysis.
SPICE, PSCAD, COMSOL Multiphysics, Python, MATLAB, SolidWorks, ANSYS, PLC
1mo
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Acoustic Data Intern (Fall 2026)
San Francisco, California, United States
$62/hr OnsiteFull Time, Internship
Pursuing a Master’s or PhD in EE/CS/Mathematics/Physics or related; experience with Python and C/C++, ML/AI, acoustic simulations, data pipelines (SQL, Spark); strong communication; available full-time Mon–Fri for a 12-week internship Sept–Dec 2026.
Python, C/C++, SQL, Spark, Databricks, COMSOL, Treble, pyroomacoustics, SMAART
4w
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RF Engineer — Cavity Design & Tuning
Redwood City, California, United States
OnsiteFull Time
Tachyon Industrial: Building next-generation industrial particle accelerator infrastructure.
Experienced RF engineer with hands-on design, simulation, testing, and tuning of high-power RF cavities; BS/MS/PhD in EE, Physics, or related preferred; strong RF/EM fundamentals and practical fabrication/test experience.
CST, HFSS, Superfish/Poisson, COMSOL
1mo
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Principal Mechanical Engineer
El Segundo or Los Angeles or Washington or San Francisco or San Diego or Seattle or London
$170k-$240k/yr OnsiteFull Time
10+ YOEBachelor's in Mechanical Engineering, 10+ years mechanical design/integration for electronic hardware in aerospace/defense, strong CAD (SolidWorks), GD&T, FEA/thermal analysis experience, and ability to obtain U.S. security clearance.
SolidWorks, NASTRAN, ABAQUS, ANSYS, COMSOL, CFD
1mo
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Acoustic Data Intern (Fall 2026)
San Francisco, California, United States
$62/hr OnsiteFull Time, Internship
Pursuing a Master's or PhD in EE/CS/Math/Physics or related; experience with Python and C/C++; machine learning and acoustic simulation experience; familiarity with data pipelines, SQL/Spark, and visualization; strong communication.
Python, C/C++, SQL, Spark, Databricks, COMSOL, Treble, pyroomacoustics, SMAART
2mo
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MTS Laser Physics Design & Development Engineer
Goleta or Fremont or Santa Barbara
$157k-$185k/yr OnsiteFull Time
7+ YOEMS or PhD in Electrical Engineering, Applied Physics, or Materials Science; 7+ years in laser diode design; strong modeling and simulation; DOE experience; proficient in Python/MATLAB; device characterization
Photon Design, COMSOL, Lumerical, MATLAB, Python, JMP
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