PsiQuantum

Silicon Photonics Design Engineer

PsiQuantum$145K — $165K *
Technical Services
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • PhD or equivalent in Electrical Engineering, Physics, Materials Science, or a related field.
  • ~5 years of industrial or academic experience in integrated photonics.
  • Expertise in fiber-chip coupling and optical packaging.
  • Proficient in Python for scientific computing and automation.
  • Experience with commercial photonic simulation tools (e.g., Lumerical, Tidy3D).
  • Familiar with photonic layout tools such as IPKISS, gdsfactory, or equivalent.
  • Effective communication skills for technical collaboration.

Responsibilities

  • Design and analyze innovative fiber-chip coupling concepts for quantum computing.
  • Oversee the entire coupling device development lifecycle from simulation to model closure.
  • Contribute to photonic tapeouts and coordinate with cross-functional teams.
  • Plan and execute automated measurements in collaboration with test engineers.
  • Analyze measurement data to optimize performance and report findings clearly.
  • Collaborate with foundry and packaging teams to validate and enhance coupling performance.

Benefits

  • Equity participation available for full-time roles.
  • Comprehensive benefits package provided.
Full Job Description
Job Summary:

We are seeking a creative and innovative Silicon Photonics Design Engineer to help push the boundaries of high-performance fiber-to-chip coupling for quantum photonic integrated circuits. This role sits at the intersection of device physics, packaging, and experimental validation, and offers ownership across the full development cycle - from concept and simulation to tapeout support, testing, and model closure.
The ideal candidate is an all-rounder with strong fundamentals in integrated photonics, theoretical and practical knowledge of fiber-chip coupling, and the ability to translate experimental results into clear, data-driven design improvements. You will collaborate closely with photonic design, foundry, packaging, and test teams to deliver robust packaging solutions for next-generation quantum hardware.

Responsibilities:
  • Design, model, and analyze novel fiber-chip coupling concepts suitable for large-scale quantum computing systems.
  • Own coupling device development across the full lifecycle, including simulation, layout, experiment design, data analysis, and model closure.
  • Contribute to photonic tapeouts, including hands-on layout, DOE definition, and coordination with cross-functional stakeholders.
  • Collaborate with test engineers to plan and execute automated, high-volume measurements, and develop new test methodologies as needed.
  • Analyze measurement data to identify performance trends, limitations, and optimization opportunities, and clearly communicate results to diverse technical audiences.
  • Work closely with foundry, packaging, and test teams to validate, screen, and continuously improve fiber-chip coupling performance.

Experience/Qualifications:

Education
  • PhD or equivalent degree in Electrical Engineering, Physics, Materials Science, or a closely related field.

Experience
  • ~5 years of relevant industrial or academic research experience in integrated photonics.

Knowledge, Skills, and Abilities
  • Strong computational and analytical skills applied to photonic device design and performance evaluation.
  • In-depth understanding of photonic devices, performance metrics, and experimental characterization techniques.
  • Demonstrated expertise in fiber-chip coupling concepts and optical packaging.
  • Proficiency in Python for scientific computing and automation (e.g., NumPy, SciPy, Matplotlib, Pandas).
  • Experience with commercial photonic and electromagnetic simulation tools (e.g., Lumerical, Tidy3D).
  • Photonic layout experience using tools such as IPKISS, gdsfactory, or equivalent.
  • Working proficiency in software engineering best practices, including version control and modular, maintainable code.
  • Excellent written and verbal communication skills, with the ability to collaborate effectively across technical and non-technical teams.
  • Hands-on experience with photonic packaging and assembly.
  • Familiarity with integrated photonics manufacturing processes.
  • Exposure to high-performance scientific computing.

You thrive in a fast-paced, collaborative startup environment, enjoy solving open-ended technical problems, and bring a thoughtful, detail-oriented approach to engineering challenges.

We are not accepting unsolicited resumes from employment agencies.

The ranges below reflect the target ranges for a new hire base salary. One is for the Bay Area (within 50 miles of HQ, Palo Alto), the second one (if applicable) is for elsewhere in the US (beyond 50 miles of HQ, Palo Alto). If there is only one range, it is for the specific location of where the position will be located. Actual compensation may vary outside of these ranges and is dependent on various factors including but not limited to a candidate's qualifications including relevant education and training, competencies, experience, geographic location, and business needs. Base pay is only one part of the total compensation package. Full time roles are eligible for equity and benefits. Base pay is subject to change and may be modified in the future.

U.S. Base Pay Range

$130,000-$145,000 USD

Bay Area Pay Range

$145,000-$165,000 USD

About PsiQuantum

PsiQuantum is a California-based company that is developing a quantum computer using photonics technology. The company's goal is to build a fault-tolerant quantum computer with millions of qubits, which would be capable of solving problems that are currently intractable with classical computers. PsiQuantum was founded in 2016 by a team of experts in photonics, quantum computing, and computer science. The company has received funding from investors such as BlackRock, Founders Fund, and Atomico.
Learn more about PsiQuantum
Size
100 employees
Industry
Founded
2016

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