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Active10mo ago

Sr. Staff Photonics Systems Engineer

Lightmatter·📍 Boston, Massachusetts, United States

Employment

Full-Time

Work mode

On-site

Experience

3+ years

Salary

$230K – $267K/yr

Role overview

Job description

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! We are hiring a Sr. Staff Photonics Systems Engineer to join our photonics team.

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About this listing

  • Source: Lightmatter's official careers site (via Greenhouse) · last confirmed on the source 27 Oct 2026
  • Posted 4 Dec 2025

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What they are looking for

Skills & requirements

Qualification

Strong understanding of laser physics Experience in lasers or silicon photonics for datacom applications Experience with control systems and system engineering Experience working in a high volume manufacturing environment Demonstrated technical leadership of a cross-functional team Willing and able to learn quickly, self-starter with a “no task is too big or small” attitude We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data. Salary Range: total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution. $230,000 — $267,000 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 (applicable to full-time employees) Benefits eligibility may vary depending on your employment status and locati

Department · Photonics & Silicon Engineering

Hiring company

Lightmatter

Rethinking the limits of AI, Lightmatter merges photonics and computing to build a future where speed, efficiency, and intelligence converge.

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