Laser Semiconductor Engineer

Lumentum · Japan - Sagamihara, Japan · full time · On site · August 04, 2026

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Posted August 04, 2026 · Read from Lumentum
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It's fun to work in a company where people truly BELIEVE in what they're doing!

We're committed to bringing passion and customer focus to the business.

If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!

Responsibilities:

  • Develop DFB laser structures for high optical output power, high efficiency, and high reliability based on semiconductor material physics and optical science.
  • Product design of DFB laser for yield improvement and cost reduction
  • Support stable volume production and continuous productivity improvement.
  • Design and fabricate the necessary parts for evaluation, such as submounts, as needed.
  • Evaluate fabricated chips, analyze evaluation data and prepare technical reports.
  • Attend a meeting to explain and discuss the results.

Expected Background:

  • BSc, MSc, PhD degree in electronics, electrical engineering, physics, or a related equivalent technical field.
  • Bachelors and 6+ years of work experience, Masters and 4+ years of work experience. PhD. no relevant work experiences.

Expected Skill:

  • Knowledge of compound semiconductor such as InP material system and material physics.
  • Experience of semiconductor laser design and development , including high power DFB laser design, optical simulation, and thermal simulation, with at least 2-3 years’ experience.
  • Experience of product design for yield improvement and cost reduction of semiconductor laser diode
  • Experience in analyzing large volumes of experimental data using JMP or similar statistical analysis tools.
  • Knowledge of semiconductor device reliability
  • Fluent Japanese speaker and intermediate English skill
  • Basic PC skills, such as MS Excel, PowerPoint, and Word
  • Programming skills, such as Excel VBA/macros and Python, are preferred.

We are an equal opportunity employer and value diversity at our company.

We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment.

Please contact us to request accommodation.

Employer
Lumentum
Location
Japan - Sagamihara, Japan · On site
Contract
full time