Lightmatter Logo

Lightmatter

Photonics Architect

Posted 15 Days Ago
Be an Early Applicant
In-Office
Boston, MA, USA
212K-321K Annually
Entry level
In-Office
Boston, MA, USA
212K-321K Annually
Entry level
Define the microarchitecture for photonic communication and interconnect fabrics. Propose photonic device designs, estimate performance, power, and area, collaborate with photonic and analog engineering teams, and author, review, and validate architectural specifications for next-generation AI and HPC products.
The summary above was generated by AI

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!

Lightmatter builds chips that enable extreme-scale AI computing clusters. If you're a collaborative engineer or scientist who has a passion for innovation, solving challenging technical problems and doing impactful work, consider joining the team at Lightmatter!

We are hiring a Photonics Architect. The selected candidate will partner with the internal engineering team to deliver groundbreaking products to the market. As an architect, you will provide detailed technical documents that describe what needs to be built to the engineering team. This will require a solid understanding of process technology, state of the art in photonics design, and clear communication skills. In this role, you will be defining the (micro-)architecture for a ground-breaking photonic-based communication fabric. From component-level design to top-level layout, you will be part of a team that enables high-bandwidth low-latency photonic interconnect/switch fabric.

You will report directly to the Sr. Director of Architecture, but you will also work closely with our photonic and analog teams to define and optimize the features needed to improve the power, performance, and area (PPA) of the next generation product. 

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

 Responsibilities:

  • Propose innovative photonic designs—modulators, receivers, multiplexers, lasers, amplifiers—for the product.
  • Work closely with the photonic engineering design team to provide the performance, power, and area estimates of the photonic devices within Passage.
  • Actively collaborate with the analog engineering team to provide a high-bandwidth photonic interconnect solution.
  • Author, review, and validate architectural specifications.

Qualifications:

  • PhD in electrical engineering, physics, applied physics, or a discipline related to photonics.
  • In-depth knowledge of photonic devices and semiconductor physics.
  • Experience with integrated silicon photonics components. Preferably has experience with photonic simulation tools: FDTD, umerical, Verilog-A, VPI Photonics.
  • Ability and desire to collaborate in a cross-disciplinary team.
  • Demonstrated strong problem solving skills specifically pertaining to problems that do not have obvious solutions.

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.
$212,000—$321,000 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 location. 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.

Export Control

Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws. 

HQ

Lightmatter Boston, Massachusetts, USA Office

At Lightmatter, we have a flexible work structure; employees work remotely and work from our physical offices located in Boston, MA, and Mountain View, CA

Similar Jobs

2 Minutes Ago
Easy Apply
Remote or Hybrid
United States
Easy Apply
Junior
Junior
eCommerce • Food • Pet
Lead planning and execution of regional brand activations across the Southeast: venue sourcing, vendor coordination, on-site logistics, budget management, partner relationships, localizing national campaigns, and serving as primary regional stakeholder contact while traveling frequently to support events.
2 Minutes Ago
Easy Apply
Remote or Hybrid
USA
Easy Apply
151K-215K Annually
Senior level
151K-215K Annually
Senior level
Cloud • Information Technology • Security • Software • Cybersecurity
Lead the development, optimization, governance, and measurement of Zscaler’s Customer Success service portfolio across Professional Services, Technical Success, and Support. The role evaluates service offerings, improves documentation and processes, establishes KPIs, audits portfolio effectiveness, collaborates cross-functionally, and recommends strategic enhancements to improve customer outcomes and adoption.
Top Skills: Ai/MlSaaSSaseZero Trust Exchange
6 Minutes Ago
Remote or Hybrid
Boston, MA, USA
Senior level
Senior level
Artificial Intelligence • Cloud • HR Tech • Information Technology • Productivity • Software • Automation
Lead product marketing for ServiceNow’s Service CRM portfolio. Own go-to-market activation, launch plans, sales enablement, competitive intelligence, messaging, positioning, content, and cross-functional programs. Build seller tools, deliver enablement, analyze market competition, translate product capabilities into customer-facing narratives, and partner with Sales, Product, Demand Generation, and Field Marketing to drive adoption, pipeline, win rates, and competitive success.
Top Skills: B2B SaasCRMServicenow

What you need to know about the Boston Tech Scene

Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.

Key Facts About Boston Tech

  • Number of Tech Workers: 269,000; 9.4% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Thermo Fisher Scientific, Toast, Klaviyo, HubSpot, DraftKings
  • Key Industries: Artificial intelligence, biotechnology, robotics, software, aerospace
  • Funding Landscape: $15.7 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Summit Partners, Volition Capital, Bain Capital Ventures, MassVentures, Highland Capital Partners
  • Research Centers and Universities: MIT, Harvard University, Boston College, Tufts University, Boston University, Northeastern University, Smithsonian Astrophysical Observatory, National Bureau of Economic Research, Broad Institute, Lowell Center for Space Science & Technology, National Emerging Infectious Diseases Laboratories

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account