Permanent Epitaxy Engineer Jobs in California (NOW HIRING)

Company Overview
Skorpios Technologies, Inc. is an innovator in heterogeneous integration of silicon photonic technology and semiconductor development. We are rapidly expanding our technical organization and are seeking a Sr. Simulation Engineer specializing in Optical and Photonics modeling. This role is critical in developing the next generation of disruptive III-V and Silicon Photonics integrated products.
Job Purpose
The Sr. Simulation Engineer is responsible for high-fidelity modeling and simulation of complex photonic integrated circuits (PICs). You will lead the virtual prototyping of high-performance devices-including lasers, modulators, and passive optical components-ensuring designs are optimized for Skorpios' unique technology platform. Operating with an in-house foundry, this role serves as the essential bridge between theoretical physics and rapid hardware implementation.
Core Responsibilities

• Active & Passive Device Modeling: Design and simulate III-V and Silicon Photonics components, including DFB/DBR Lasers, SOAs, EAM/MZM modulators, UTC photodiodes, optical couplers, WDM devices, and 90-degree hybrids.
• Multi-Physics & RF Simulation: Lead complex modeling that couples optical, electrical, and thermal solvers (e.g., self-heating effects in laser diodes). Optimize RF performance for high-speed modulators and optical-electrical conversion efficiency.
• Material & Heterogeneous Integration: Optimize epitaxy layers and quantum well designs. Perform optical mode and impedance matching across diverse material interfaces to ensure seamless III-V and Silicon integration.
• In-House Foundry Collaboration: Partner directly with the internal Fab and Device Designers to translate simulations into actionable layouts (HPIC). Establish process design rules and perform DRC (Design Rule Check) and LVS (Layout Versus Schematic) to ensure tapeout accuracy.
• Virtual DOE & Validation: Execute virtual Design of Experiments (DOE) to predict device reliability and performance. Validate simulation outputs against internal lab characterization data to refine material parameters and "close the loop" on model accuracy.

Technical Stack & Knowledge Domains

• Simulation Mastery: Expert-level proficiency in Ansys Lumerical (FDTD, MODE, DEVICE, INTERCONNECT), Synopsys RSoft/OptSim, and Zemax/Speos.
• RF & Mathematical Tools: Experience with Keysight ADS, Ansys HFSS, or CST Microwave Studio. Advanced proficiency in Python or MATLAB for automation and large-scale data analysis.
• III-V & Semiconductor Physics: Deep understanding of bandgap engineering, carrier dynamics, recombination mechanisms, and band structures.
• Fabrication & Packaging: Strong knowledge of how epitaxy growth, etching profiles, and metalization affect optical modes. Familiarity with fiber coupling and Co-Packaged Optics (CPO).

Competencies

• Analytical Thinking: Ability to synthesize large datasets and utilize statistical tools (e.g., JMP or Minitab) for performance reporting.
• Communication: Proven ability to present complex technical trade-offs to engineering teams, executive leadership, and customers.
• Problem Solving: Strong troubleshooting skills in resolving discrepancies between modeled and measured device performance.

Requirements
Required Education and Experience

• Education: M.S. or Ph.D. in Physics, Electrical Engineering, Material Science, or a related field with an emphasis on computational photonics.
• Experience: 10+ years of industrial experience in photonics simulation and design, with a proven track record of bringing products from concept through in-house manufacturing.

Physical Demands & Work Environment

• Environment: Temperature-controlled office/lab setting.
• Physical: Constantly viewing high-resolution monitors for prolonged periods (8+ hours) for detailed modeling.
• Travel: Anticipated travel is less than 25%.

Why Skorpios?
At Skorpios, you will be at the forefront of the silicon photonics revolution. We offer the chance to work on truly disruptive technology that is changing how the world connects. You will be part of a team where technical excellence is celebrated and where your contributions have a direct impact on the success of our next-generation product lines.
Skorpios offers an excellent benefits package which includes:

• Competitive Salary
• Medical
• Dental
• Vision
• 401(k)
• Company paid Life Insurance
• Company paid Disability
• Paid Holidays
• Paid Vacation
• Birthday Leave
• Gym Membership Discounts

Export Control / ITAR Statement: This position is located at a facility that operates under International Traffic in Arms Regulations (ITAR). All applicants must be 'U.S. persons' within the meaning of ITAR. ITAR defines a 'U.S. person' as a U.S. Citizen, U.S. Permanent Resident (i.e., 'Green Card Holder'), Political Asylee, or Refugee.
Skorpios Technologies, Inc. is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity or expression, national origin, ancestry, age (40 and over), physical or mental disability, medical condition, genetic information, marital status, military or veteran status, protected leave status, or any other characteristic protected by applicable federal, state, or local laws.
As a federal contractor, Skorpios Technologies, Inc. takes affirmative action to employ and advance in employment qualified minorities, women, protected veterans, and individuals with disabilities. We encourage all qualified candidates to apply.
Skorpios Technologies, Inc. is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or accommodation due to a disability, you may contact us at or AskHR@Skorpiosinc.com