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 is seeking an experienced Senior Account Manager to take ownership of several major customer accounts. In this highly visible role, you will be the face and voice of Lightmatter, driving the entire sales cycle from initial engagement through deal closure. You will also be the voice of the customer to the Lightmatter leadership team. The role requires the development of a deep understanding of customer needs and the ability to position Lightmatter's solutions to meet them.
Responsibilities- Develop and execute comprehensive sales strategies that meet target revenue numbers and expands Lightmatter’s footprint within key accounts.
- Build and maintain trusted-advisor relationships with influencers and decision-makers from C-suite executives to individual engineers.
- Apply a deep understanding of customer pain points and business objectives to clearly communicate the value of Lightmatter's solutions and work with the Lightmatter product team to deliver them.
- Be the voice of the customer with the internal teams — including engineering, marketing, finance, and legal — to ensure seamless delivery and a strong customer experience.
- Identify, manage, and close net new business opportunities as well as collaboration across the team to help everyone win.
- Produce accurate sales forecasts and present pipeline activity directly to Lightmatter CEO, CFO and SVPs..
- Lead negotiations and close complex deals with large enterprise customers.
- Be a hunter with 8+ years of experience in the semiconductor or datacenter industry, including at least 5 years in direct sales or strategic account management.
- Bachelor's degree in engineering, computer science, or a related technical field.
- Strong working knowledge of datacenter infrastructure (CPU, GPU, networking)
- Be skilled in explaining complex solutions to both engineering and executive audiences.
- Proven ability to drive complex sales processes, with a track record of revenue growth and closing greenfield opportunities as well as expanding within accounts.
- Exceptional written, verbal, and presentation skills, with the ability to convey technical concepts to diverse audiences.
- Demonstrated success leading cross-functional initiatives spanning three to five stakeholder groups (e.g., engineering, product, operations, sales, finance), helping ensure Lightmatter is delighting the customer at every level.
- Ability to travel up to 15% of the time, as needed, for customer meetings, team collaboration, conferences, and company events
- HPC Networking experience
- Experience with product definition and/or product management role
- Experience selling advanced semiconductors (processors, FPGAs, etc.) into major enterprises
- Experience or understanding of current optics products landscape and sales process
We offer competitive compensation. On target earnings range is listed below. The final compensation will be determined based on location, experience, educational background, and market data.
- 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.
Skills Required
- 7+ years experience in the semiconductor or datacenter industry, including at least 5 years in direct sales or strategic account management
- Bachelor's degree in engineering, computer science, or a related technical field
- Strong working knowledge of datacenter infrastructure (CPU, GPU, networking)
- Proven ability to drive complex sales processes, revenue growth, and close greenfield opportunities as well as expand within accounts
- Skilled in explaining complex technical solutions to engineering and executive audiences
- Exceptional written, verbal, and presentation skills
- Demonstrated success leading cross-functional initiatives spanning multiple stakeholder groups
- Ability to travel up to 15% as needed
- Capacity to comply with U.S. export control laws
- Hunter mentality with demonstrated new business development skills
- HPC Networking experience
- Experience with product definition and/or product management
- Experience selling advanced semiconductors (processors, FPGAs, etc.) into major enterprises
- Experience or understanding of the optics products landscape and sales process
Lightmatter Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Lightmatter and has not been reviewed or approved by Lightmatter.
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Fair & Transparent Compensation — Pay is considered competitive for specialized photonics and AI‑hardware roles, with posted ranges and third‑party totals aligning to strong market levels. Compensation for niche roles is framed as consistent with top‑tier hardware/photonics expectations.
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Healthcare Strength — Healthcare is described as comprehensive, covering medical, dental, and vision in current postings. Additional protections like life insurance and disability are also called out.
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Equity Value & Accessibility — Equity grants for full‑time employees are commonly included alongside base pay. Some postings also mention performance‑based equity components.
Lightmatter Insights
What We Do
Lightmatter is a startup photonics company that has pioneered a new paradigm in processor chip architecture that uses photons instead of electrons. Now the leader in the photonic AI compute “space race,” this new class of high performance semiconductors is the foundation of Lightmatter’s mission to enable the growth of computing, reduce harmful emissions associated with this growth, and democratize computing for all. Lightmatter's technology accelerates critical operations in deep neural networks, using an array of programmable photonic elements fabricated alongside transistors in conventional computer chip fabrication processes. Our close-knit team of engineers has created an integrated photonics chip and ultra-high performance interconnect that is faster, more efficient, and cooler than anything else on earth (or anything ever experienced before) to power the next giant leaps in human progress.
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