Sr. Cost Accountant

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!

About this role

Lightmatter is seeking a motivated and experienced Cost Accountant to join our growing team. In this crucial role, you will leverage your expertise in NetSuite and cost accounting principles to support our fast-paced operations. As a key contributor, you will play an instrumental role in developing and maintaining cost accounting processes, analyzing financial data, and providing actionable insights to optimize costs. This position is ideal for someone excited about building processes and driving efficiencies in a dynamic, high-growth environment.

If you’re eager to contribute to a collaborative and innovative team, this is your call to action!

Responsibilities

• Develop, implement, and maintain cost accounting processes in NetSuite tailored to semiconductor and hardware manufacturing processes.
• Establish and manage standard costs for materials, labor, and overhead; track and report variances.
• Partner with engineering and operations teams to understand project scope, timelines, and resource allocation for accurate cost modeling.
• Analyze historical costs, provide actionable insights, and support data-driven decision-making.
• Own the monthly/quarterly cost forecasting process and ensure alignment with the overall financial plan.
• Collaborate with cross-functional teams to improve financial processes, reporting, and automation.
• Participate in month-end and quarter-end close processes,and provide monthly inventory and cost variance analysis reports.
• Prepare quarterly inventory reserve analysis.
• Conduct inventory valuation and reconciliation, including cycle counts and obsolescence reviews.
• Drive continuous improvement initiatives to scale cost accounting processes as the company grows.

Qualifications

• Bachelor’s degree in Accounting, Finance, or a related field.
• 8+ years of cost accounting experience, with 5 of those years in the semiconductor industry
• Hands-on experience with NetSuite 
• Strong analytical skills and attention to detail, with the ability to work with complex datasets within Excel and Google Sheets.
• Proven ability to work in a fast-paced and manage multiple priorities.
• Effective communication and presentation skills, with the ability to convey financial concepts to non-financial stakeholders.

Preferred Qualifications

• Prior experience in cost accounting for pre-IPO high-growth technology or semiconductor companies.
• Familiarity with financial reporting standards (e.g., GAAP).

 

We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

Salary Range$115,000—$140,000 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.

Export Control

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