Demo

Optical Assembly Process Development Engineer

Lightmatter
Mountain View, CA Full Time
POSTED ON 2/28/2025
AVAILABLE BEFORE 5/25/2025

Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world's first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.

Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!

If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.

Lightmatter is (re)inventing the future of computing with light!

Optical Assembly Process Development Engineer

We are seeking a highly skilled and hands-on Optical Assembly Process Development Engineer with expertise in optical assembly and packaging in a prototype or production environment. This role will support the development, optimization, and troubleshooting of advanced assembly processes for next-generation products. The ideal candidate will have deep technical expertise in semiconductor packaging, advanced assembly techniques, and the ability to work in a fast-paced prototype environment.

Key Responsibilities

  • Lead the development, optimization, and validation fiber & lens attach processes for prototype builds.
  • Design and conduct experiments to optimize process parameters fiber alignment / attachment.
  • Work closely with R&D and design teams to understand product requirements and translate them into effective process solutions for prototype builds.
  • Collaborate with cross-functional teams to identify and resolve technical challenges during prototype assembly and testing.
  • Perform root cause analysis of process failures, identifying corrective actions and implementing solutions to improve yield and reliability.
  • Ensure proper maintenance, calibration, and troubleshooting of equipment used in flip chip assembly, fiber attach, and other relevant processes.
  • Evaluate and recommend new tools and technologies to improve prototype assembly capabilities.
  • Maintain detailed records of process changes, test results, and performance data for ongoing improvements and troubleshooting.
  • Generate reports for internal stakeholders on process performance, quality metrics, and prototype build status.

Required Qualifications

  • Bachelor's or Master's degree in Mechanical Engineering, Materials Science, or a related field.
  • Minimum of 3-5 years of hands-on experience in optical assembly and packaging in a prototype or production environment.
  • Proficiency in handling optical components (e.g., lenses, fibers, waveguides) and alignment techniques.
  • Experience with equipment such as precision alignment stations, bonding systems, and metrology tools
  • Strong experience with fiber attach technologies, including optical fiber alignment and bonding, and relevant tools / equipment.
  • Hands-on experience in the assembly of prototypes, from initial design to final testing and troubleshooting.
  • Expertise in process development, test methodologies, and failure analysis techniques.
  • Knowledge of materials used in flip chip and fiber / lens attach processes, including solders, epoxies, and die attach materials.
  • Preferred Skills

  • Experience with cleanroom environments and knowledge of cleanliness standards in semiconductor and photonic device assembly.
  • Python scripting experience for optical bench automation
  • Ability to use CAD software (e.g., SolidWorks, AutoCAD) to interpret assembly designs and process flows.
  • Knowledge in using tools such as bond testers, X-ray inspection systems, microscopes, SEM, and optical inspection for prototype evaluation.
  • We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

    Salary Range

    112,000-$150,000 USD

    Benefits

  • Comprehensive Health Care Plan (Medical, Dental & Vision)
  • Retirement Savings Matching Program
  • Life Insurance (Basic, Voluntary & AD&D)
  • Generous Time Off (Vacation, Sick & Public Holidays)
  • Paid Family Leave
  • Short Term & Long Term Disability
  • Training & Development
  • Commuter Benefits
  • Flexible, hybrid workplace model
  • Equity grants
  • Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.

    Salary : $112,000 - $150,000

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