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Job details

System Mechanical Engineer

Lightmatter is a leading developer of silicon photonics AI infrastructure, creator of the 3D-stacked Passage™ photonics engine. The company seeks a motivated System Mechanical Engineer to design, test, integrate, and qualify thermal and structural packaging for next-generation AI accelerators and interconnect products, collaborating with scientists, systems engineers, and external fabricators to deliver production-ready hardware.

Skills

  • Proficiency in 3D CAD solid modeling and CAD best practices
  • Hands-on experience with thermal and structural testing and analysis
  • Strong understanding of heat transfer, strength of materials, and materials selection
  • Experience applying vibration and mechanical loading criteria to electronics packaging
  • Familiarity with compliance testing processes (EMI/EMC and safety)
  • Experience working with fabricators and supervising build-to-print manufacturing

Responsibilities

  • Design, test, analyze, integrate, qualify and document mechanical hardware of moderate to high complexity
  • Develop thermal and structural packaging solutions to meet performance and reliability targets
  • Lead mechanical design approaches and packaging techniques within the Systems organization
  • Capture and analyze hardware engineering requirements in area of domain expertise
  • Participate in compliance testing with nationally recognized test labs for EMI/EMC and safety standards
  • Perform root-cause analysis and technical investigations for thermal and mechanical failures
  • Manage relationships with outside fabricators to ensure correct build-to-print and quality workmanship
  • Support cross-functional integration, pre-qualification, and qualification efforts for products and sub-systems
  • Contribute to technical roadmaps, best practices, and product feasibility assessments

Education

  • Bachelor's degree in Mechanical Engineering or related field (required)
  • Master's degree in Mechanical Engineering or related field (preferred)

Benefits

  • Comprehensive health plan (medical, dental, vision)
  • Retirement savings matching program
  • Life insurance (basic, voluntary & AD&D)
  • Generous paid time off (vacation, sick, public holidays)
  • Paid family leave
  • Short-term & long-term disability
  • Training & development opportunities
  • Commuter benefits
  • Flexible hybrid workplace
  • Equity grants for full-time employees
To read the complete job description, please click on the ‘Apply’ button

Average salary estimate

$152000 / YEARLY (est.)
min
max
$124000K
$180000K

If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.

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Lightmatter is a team of designers, developers, and strategists that build software applications to help the world's most promising health companies improve the lives of their patients.

6 jobs
MATCH
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BADGES
Badge Rapid Growth
CULTURE VALUES
Customer-Centric
Empathetic
Transparent & Candid
Growth & Learning
Work/Life Harmony
BENEFITS & PERKS
Maternity Leave
WFH Reimbursements
Fully Distributed
Company Retreats
Medical Insurance
Vision Insurance
Dental Insurance
Unlimited Vacation
Paid Time-Off
Paid Sick Days
Paid Holidays
Learning & Development
Health Savings Account (HSA)
FUNDING
DEPARTMENTS
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
SALARY RANGE
$124,000/yr - $180,000/yr
EMPLOYMENT TYPE
Full-time, hybrid
DATE POSTED
September 13, 2025
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