Leading the revolution in AI data center infrastructure with the world's first 3D-stacked photonics engine for advanced AI and HPC workloads.

Lightmatter, a revolutionary company in AI data center infrastructure, is seeking a Senior Software Engineer to join their innovative team. Recently raising $400 million in Series D funding with a $4.4 billion valuation, Lightmatter is pioneering the development of photonic AI processors and interconnects.

As a Software Engineer focusing on device software and firmware, you'll be at the forefront of developing the next generation of photonic computing technology. You'll work with cutting-edge technology, including the world's first 3D-stacked photonics engine, Passage™, which enables connecting thousands to millions of processors at the speed of light in extreme-scale data centers.

The role offers an exciting opportunity to work across multiple disciplines, collaborating with experts in Photonic, Analog, Digital, Systems, and Network fields. You'll be responsible for developing and extending device software and firmware stacks, implementing security features, telemetry systems, virtualization, and remote administration functionality.

This position is ideal for someone with strong experience in embedded systems and firmware development, particularly with Linux-based systems. The role combines hardware and software expertise, requiring both technical depth and the ability to work with cross-functional teams. You'll have the opportunity to directly impact the future of computing while working with a team of brilliant scientists and accomplished industry leaders.

The company offers an attractive compensation package, including comprehensive healthcare, retirement benefits, and equity opportunities. With a flexible hybrid work model and strong emphasis on professional development, Lightmatter provides an environment where you can grow while contributing to groundbreaking technology advancement.

Senior Software Engineer position at Lightmatter, developing device software and firmware for revolutionary photonic AI processors and interconnects.

Software Engineer - Device Software and Firmware

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking Passage™ technology - the world's first 3D-stacked photonics engine. Having recently secured $400 million in Series D funding at a $4.4 billion valuation, they're rapidly expanding their innovative work in data center photonics.

As a Software Engineer focusing on device software and firmware, you'll be instrumental in building the next generation of photonic AI processors and interconnects. This role combines embedded systems expertise with cutting-edge photonic computing technology, offering a unique opportunity to work with state-of-the-art hardware-software integration.

You'll collaborate with a diverse team of experts in Photonic, Analog, Digital, Systems, and Network fields, developing crucial control plane architecture for photonic interconnect products. The role involves creating sophisticated diagnostics and monitoring systems for photonic transceivers, while integrating with modern datacenter administration capabilities.

The position offers competitive compensation and comprehensive benefits, including healthcare, retirement savings, and equity options. Working in a hybrid environment, you'll join a team of brilliant scientists and accomplished industry leaders who are literally reinventing computing with light. This is a chance to be at the cutting edge of technology that could enable the next giant leaps in human progress.

The ideal candidate will bring extensive experience in device driver and kernel development, strong hardware-software integration skills, and a deep understanding of embedded systems. If you're passionate about tackling complex challenges and want to be part of a revolutionary change in computing technology, this role offers an exceptional opportunity to make a significant impact in the field.

Senior software engineering role developing device software and firmware for revolutionary photonic AI processors and interconnects at Lightmatter.

Lightmatter is revolutionizing AI data center infrastructure with their groundbreaking 3D-stacked photonics engine, Passage™. Having recently secured $400 million in Series D funding at a $4.4 billion valuation, they're at the forefront of photonic computing innovation. 

As a Senior Staff Photonics Hardware Engineer, you'll join a dynamic team developing cutting-edge Silicon Photonics-based Optical Interconnect Products. This role combines deep technical expertise with hands-on laboratory work, requiring mastery in Electro-Optic link-level testing and characterization.

You'll work directly with cross-functional teams, including design engineers and software engineers, contributing to the development of next-generation optical interconnect products. The position offers unique challenges in chip validation, test plan development, and system integration, making it perfect for someone passionate about pushing the boundaries of photonic computing.

The company offers a comprehensive benefits package, including competitive compensation, health benefits, equity opportunities, and a flexible hybrid work environment. At Lightmatter, you'll be part of a team of brilliant scientists and engineers working to reshape the future of computing with light-based technology.

This role is ideal for candidates with extensive experience in data communications who want to make a significant impact in a rapidly growing company. You'll have the opportunity to lead technical initiatives, mentor junior engineers, and contribute to groundbreaking innovations in photonic computing technology.

Senior Staff Photonics Hardware Engineer role at Lightmatter, leading chip validation and testing for revolutionary photonic computing systems.

Senior Staff Photonics Hardware Engineer

Lightmatter is leading the revolution in AI data center infrastructure, inventing the world's first 3D-stacked photonics engine.

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking 3D-stacked photonics engine, Passage™. This innovative technology enables the connection of thousands to millions of processors at the speed of light, catering to extreme-scale data centers for advanced AI and HPC workloads.

As a Design Verification Engineer at Lightmatter, you'll be integral to a dynamic, interdisciplinary team. Your role involves close collaboration with digital design experts, using UVM testbench techniques for rigorous design verification. You'll work alongside photonic and analog designers, applying Real Number Modeling (RNM) and AMS verification methods to ensure design integrity.

Key responsibilities include:
1. Collaborating with digital, photonics, and analog design teams to develop comprehensive test plans.
2. Designing and implementing UVM testbenches for subsystem-level and full-chip verification.
3. Developing Real Number Models (RNM) for photonics and analog circuits.
4. Contributing to the Golden Reference Model (GRM) for design verification.
5. Executing emulation and formal verification for DV purposes.

This role offers a unique opportunity to enhance your skills across UVM, AMS modeling, mixed-signal verification, formal verification, emulation, and both performance modeling and verification. You'll be part of a team of brilliant scientists, engineers, and accomplished industry leaders, tackling complex challenges and making a significant impact in the field.

Lightmatter recently raised $400 million in its Series D round, reaching a valuation of $4.4 billion, demonstrating strong growth potential and industry confidence. Join Lightmatter in (re)inventing the future of computing with light!

Senior Design Verification Engineer at Lightmatter, revolutionizing AI data center infrastructure with photonics technology.

Senior Design Verification Engineer

Lightmatter is leading the revolution in AI data center infrastructure, inventing the world's first 3D-stacked photonics engine for extreme-scale data centers.

Lightmatter is at the forefront of revolutionizing AI data center infrastructure, having invented the world's first 3D-stacked photonics engine, Passage™. This groundbreaking technology enables the connection of thousands to millions of processors at the speed of light in extreme-scale data centers, catering to the most advanced AI and HPC workloads.

As a Digital Design Engineer at Lightmatter, you'll be part of a team developing an ASIC for the next-generation artificial intelligence computing architecture. You'll work alongside world-class scientists and engineers, tackling complex challenges and making a significant impact in the field of optical computing.

Your responsibilities will include developing microarchitecture design and RTL for advanced ML/AI accelerator ASICs/SoCs, integrating silicon photonic communication and compute technology into digital accelerator design, and collaborating with various teams to achieve high-performance, low-power designs in advanced technology nodes.

This role offers a unique opportunity to shape the future of computing, working on innovative projects that combine cutting-edge AI technology with photonics. You'll be part of a company that has recently raised $400 million in its Series D round, reaching a valuation of $4.4 billion, indicating strong growth potential and resources for development.

Lightmatter offers a comprehensive benefits package, including health care, retirement savings matching, life insurance, generous time off, and stock options. The company promotes a flexible, hybrid workplace model, supporting a balanced work-life integration.

If you're passionate about innovation, solving challenging technical problems, and want to be at the forefront of (re)inventing the future of computing with light, this role at Lightmatter presents an exciting opportunity to make a lasting impact in the field of AI and computer architecture.

Digital Design Engineer developing ASIC for next-gen AI computing architecture using photonics technology at Lightmatter.

Digital Design Engineer

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking invention: the world's first 3D-stacked photonics engine, Passage™. This innovative technology enables the connection of thousands to millions of processors at the speed of light in extreme-scale data centers, catering to the most advanced AI and HPC workloads.

As a key member of the analog team, you'll be instrumental in architecting the world's first photonic computers. This role demands a unique blend of deep expertise in mixed-signal and analog design, coupled with a broad understanding of related disciplines such as photonics, digital electronics, semiconductor device physics, thermal/packaging, and machine learning.

Your responsibilities will include supporting micro-architecture development, collaborating with various design engineering teams, designing analog/mixed-signal blocks (focusing on transceivers), documenting designs, driving block-level floorplans, running simulations, and validating circuit performance in the lab.

The ideal candidate will have a strong background in optical or wireline transceiver design, with experience in designing Analog-Front-End blocks, Tx/Rx equalization techniques, and SERDES architectures. Familiarity with Cadence Design Environment and 3D Electro-Magnetic simulation tools is highly valued.

Joining Lightmatter means being part of a team of brilliant scientists, engineers, and industry leaders who are tackling complex challenges and making a significant impact. With a recent $400 million Series D funding round and a $4.4 billion valuation, Lightmatter is poised for continued growth and innovation in data center photonics.

The company offers a competitive salary range of $130,000 to $240,000 USD, along with comprehensive benefits including health care, retirement savings matching, generous time off, and stock options. Lightmatter promotes a flexible, hybrid workplace model and is committed to diversity and inclusion in its hiring practices.

Senior Analog/Mixed-Signal Design Engineer for pioneering photonic computing at Lightmatter

Senior Analog/Mixed-Signal Design Engineer

Lightmatter is leading the revolution in AI data center infrastructure, inventing the world's first 3D-stacked photonics engine for extreme-scale AI and HPC workloads.

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking 3D-stacked photonics engine, Passage™. This innovative technology enables the connection of thousands to millions of processors at the speed of light, catering to the most advanced AI and HPC workloads in extreme-scale data centers.

Recently raising $400 million in a Series D round and reaching a valuation of $4.4 billion, Lightmatter is poised to accelerate the development of data center photonics and expand across all departments. The company is redefining the future of computing by creating a new kind of computer that calculates using light, addressing the limitations of traditional transistor-based systems and offering a more sustainable solution for scaling AI.

As a Senior Power Integrity Engineer at Lightmatter, you'll play a crucial role in driving the next generation of products from concept to development. You'll be part of a cross-functional systems and packaging team, working on innovative package and system architectures that solve complex interactions across digital, analog, and photonics domains while meeting stringent signal and power integrity goals.

Key responsibilities include designing end-to-end power delivery networks, modeling voltage regulators, simulating PCBs and packages, performing time domain simulations and power integrity measurements, and collaborating with cross-functional teams to provide power integrity guidance throughout the product development lifecycle.

The ideal candidate will have a Master's in Electrical Engineering with 6 years of relevant experience or a Bachelor's degree with 8 years of experience in power delivery and power integrity analysis for high-performance CPUs and compute SoCs. Proficiency in simulation tools like PowerSI, PowerDC, H-Spice, and ADS is required, along with experience in DC-DC converter design and PCB design considerations for power integrity.

Joining Lightmatter offers the opportunity to work on cutting-edge technology that has the potential to make significant advancements in AI while reducing its environmental footprint. If you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, this role at Lightmatter could be the perfect fit for you.

Senior Power Integrity Engineer at Lightmatter, driving next-gen AI infrastructure with photonics technology.

Senior Power Integrity Engineer

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking 3D-stacked photonics engine, Passage™. This innovative technology enables connecting thousands to millions of processors at the speed of light, catering to the most advanced AI and HPC workloads. 

As a Design Verification Engineer at Lightmatter, you'll be integral to a dynamic, interdisciplinary team. Your role involves close collaboration with digital design experts, using UVM testbench techniques for rigorous design verification. You'll work alongside photonic and analog designers, applying Real Number Modeling (RNM) and AMS verification methods to ensure design integrity.

Key responsibilities include developing comprehensive test plans, implementing UVM testbenches for subsystem and full-chip verification, and creating Real Number Models for photonics and analog circuits. You'll also contribute to the Golden Reference Model development and participate in emulation and formal verification processes.

This role offers a unique opportunity to enhance your skills across various areas, including UVM, AMS modeling, mixed-signal verification, and performance modeling. You'll be at the heart of innovation, working with brilliant scientists, engineers, and industry leaders to shape the future of computing with light.

Lightmatter recently raised $400 million in its Series D round, reaching a valuation of $4.4 billion. This funding will accelerate the development of data center photonics and support growth across all departments. If you're passionate about tackling complex challenges, making a significant impact, and becoming an expert in your craft, Lightmatter offers an exciting environment to push the boundaries of technology and contribute to groundbreaking advancements in AI infrastructure.

Design Verification Engineer at Lightmatter, developing UVM testbenches and Real Number Models for revolutionary photonics-based AI infrastructure.

Design Verification Engineer

Lightmatter is at the forefront of revolutionizing AI data center infrastructure, having invented the world's first 3D-stacked photonics engine, Passage™. This groundbreaking technology enables the connection of thousands to millions of processors at the speed of light in extreme-scale data centers, catering to the most advanced AI and HPC workloads.

As a Design Verification Engineer at Lightmatter, you'll be integral to a dynamic, interdisciplinary team. Your role involves close collaboration with digital design experts, using UVM testbench techniques for rigorous design verification. You'll work alongside photonic and analog designers, applying Real Number Modeling (RNM) and AMS verification methods to ensure design integrity.

Key responsibilities include:
1. Collaborating with digital, photonics, and analog design teams to develop comprehensive test plans.
2. Designing and implementing UVM testbenches for subsystem-level and full-chip verification.
3. Developing Real Number Models (RNM) for photonics and analog circuits, conducting AMS verification with UVM.
4. Contributing to the Golden Reference Model (GRM) for design verification.
5. Executing emulation and formal verification for DV purposes.

This role offers a unique opportunity to enhance your skills across UVM, AMS modeling, mixed-signal verification, formal verification, emulation, and both performance modeling and verification. You'll be part of a team of brilliant scientists, engineers, and accomplished industry leaders, tackling complex challenges and making a significant impact in the field.

Lightmatter recently raised $400 million in its Series D round, reaching a valuation of $4.4 billion, demonstrating strong growth potential and industry confidence. Join us in (re)inventing the future of computing with light!

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking 3D-stacked photonics engine, Passage™. This innovative technology enables the connection of thousands to millions of processors at the speed of light, catering to the most advanced AI and HPC workloads in extreme-scale data centers.

As an Infrastructure Engineer at Lightmatter, you'll play a pivotal role in developing, managing, deploying, and supporting the infrastructure that underpins the company's next-generation computing technology. This position places you at the exciting intersection of hardware and software, right at the cutting edge of photonic computing.

Your responsibilities will include evolving the compute, storage, and networking infrastructure to meet the diverse needs of R&D, engineering, sales, and operations teams. You'll maintain Lightmatter's infrastructure strategy and security, collaborate with EDA companies, support innovative methodologies and flows, manage tools and licenses, and partner with internal and external teams to ensure smooth operations.

The ideal candidate will have a strong background in cloud development or networking, proficiency in Python, and experience in architecting and deploying secure infrastructure in cloud environments. You should be adept at building relationships with external partners and have a solid understanding of hardware or software development.

Joining Lightmatter means being part of a team of brilliant scientists, engineers, and industry leaders who are passionate about tackling complex challenges and making a significant impact. With recent Series D funding of $400 million and a valuation of $4.4 billion, Lightmatter is poised for rapid growth and continued innovation in data center photonics.

If you're excited about (re)inventing the future of computing with light and want to be at the forefront of this technological revolution, this role at Lightmatter offers an unparalleled opportunity to shape the future of AI and high-performance computing infrastructure.

Senior Infrastructure Engineer at Lightmatter, developing next-gen photonic computing infrastructure for AI and HPC workloads.

Senior Infrastructure Engineer

Lightmatter is at the forefront of revolutionizing AI data center infrastructure, having invented the world's first 3D-stacked photonics engine, Passage™. This groundbreaking technology enables the connection of thousands to millions of processors at the speed of light in extreme-scale data centers, catering to the most advanced AI and HPC workloads. 

As a Sr. Simulation Hardware/Software Engineer at Lightmatter, you'll be part of a team that's (re)inventing the future of computing with light. You'll work on developing and maintaining simulation tools across digital, analog, and photonics domains, collaborating closely with cross-functional teams to deliver groundbreaking products to the market.

Your responsibilities will include developing electro-optic simulation methodologies, working with various simulators (Xcelium, Spectre, scattering parameter simulators), and programming in languages like SystemVerilog, VerilogA, and Python. You'll be instrumental in architecting digital circuits to enable high-speed AMS circuits, with a focus on photonic circuits.

This role offers the unique opportunity to build a new kind of (super)computer from the ground up, solving groundbreaking challenges along the way. You'll be part of a tight-knit team where your contributions directly influence the company's success, working alongside people who love to build and thrive in technically diverse environments.

Lightmatter recently raised $400 million in its Series D round, reaching a valuation of $4.4 billion, which demonstrates the company's strong growth trajectory and the potential for significant impact in the field of AI and computing.

Join Lightmatter if you're passionate about tackling complex challenges, making a real impact, and being an expert in your craft. You'll be working with a team of brilliant scientists, engineers, and accomplished industry leaders, all dedicated to enabling the next giant leaps in human progress through revolutionary computing technology.

Sr. Simulation Hardware/Software Engineer at Lightmatter, developing electro-optic simulation tools for revolutionary AI data center infrastructure.

Sr. Simulation Hardware/Software Engineer

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking 3D-stacked photonics engine, Passage™. This innovative technology enables the connection of thousands to millions of processors at the speed of light, catering to the most advanced AI and HPC workloads in extreme-scale data centers.

As a Senior Power Integrity Engineer at Lightmatter, you'll play a crucial role in driving the next generation of products from concept to development. You'll be part of a cross-functional systems and packaging team, working alongside silicon, package, and systems engineers. Your primary focus will be on driving package and system architecture definition, optimizing designs, and ensuring product power integrity requirements are met.

This position offers a unique opportunity to innovate new package and system architectures by solving complex interactions across digital, analog, and photonics domains while meeting stringent signal and power integrity goals. You'll be responsible for designing end-to-end power delivery networks, modeling voltage regulators, simulating PCBs and packages, performing time domain simulations, and conducting detailed power integrity measurements and characterization.

Collaboration is key in this role, as you'll work closely with hardware designers, PCB layout engineers, system architects, and power and performance engineers throughout the product development lifecycle. Your expertise will be vital in power integrity design reviews, providing technical guidance, and ensuring optimal performance and adherence to design specifications.

Joining Lightmatter means being part of a team that's redefining the future of computing with light. With a recent $400 million Series D funding round and a $4.4 billion valuation, the company is poised for significant growth and innovation. If you're passionate about tackling complex challenges, making a lasting impact, and becoming an expert in your craft, this is an excellent opportunity to work alongside brilliant scientists, engineers, and accomplished industry leaders.

By contributing to Lightmatter's mission, you'll be helping to scale AI capabilities while reducing its environmental footprint, ultimately shaping the future of what computers and human beings are capable of achieving.

Lightmatter is at the forefront of revolutionizing AI data center infrastructure, having invented the world's first 3D-stacked photonics engine, Passage™. This groundbreaking technology enables the connection of thousands to millions of processors at the speed of light in extreme-scale data centers, catering to the most advanced AI and HPC workloads.

As a Software Engineer at Lightmatter, you'll be instrumental in building the next generation of photonic AI processors and interconnects. Your role will involve developing and extending the device software and firmware stack for Photonic Compute and Photonic interconnect products. You'll work collaboratively with multidisciplinary teams, including Photonic, Analog, Digital, Systems, and Network experts, to define control plane architecture for Lightmatter's photonic interconnect products.

Key responsibilities include defining diagnostics and monitoring architecture for photonic transceivers, integrating with DataCenter administration capabilities using environments such as OpenBMC and DMTF, and participating in customer engagements to gather requirements and usability criteria.

The ideal candidate will have extensive experience in device driver and kernel side development, a strong understanding of hardware-software integration, and practical knowledge of communication and control in embedded systems, peripherals, and buses. Experience with developing commercial/enterprise-level software and firmware on Linux is essential.

Joining Lightmatter means being part of a team that's reinventing the future of computing with light. You'll work alongside brilliant scientists, engineers, and accomplished industry leaders, tackling complex challenges and making a significant impact in your field. With recent Series D funding of $400 million and a valuation of $4.4 billion, Lightmatter is poised for continued growth and innovation in data center photonics.

If you're passionate about pushing the boundaries of technology and want to be at the cutting edge of AI infrastructure development, this role at Lightmatter offers an exciting opportunity to shape the future of computing.

Senior Software Engineer role at Lightmatter, developing next-gen photonic AI processors and interconnects for revolutionary data center infrastructure.

Senior Software Engineer - Embedded Systems

Lightmatter is at the forefront of revolutionizing AI data center infrastructure, having invented the world's first 3D-stacked photonics engine, Passage™. This groundbreaking technology enables the connection of thousands to millions of processors at the speed of light in extreme-scale data centers, catering to the most advanced AI and HPC workloads.

As a Software Engineer at Lightmatter, you'll be part of a team that's reinventing the future of computing with light. Your role will involve developing and extending the device-software and firmware stack for Photonic Compute and Photonic interconnect products. You'll collaborate with software team members and hardware systems teams to develop and model embedded systems functionality.

Key responsibilities include managing link configuration, troubleshooting, and maintenance for optical networking in ML data center environments, managing secure device bring-up for first silicon, and developing diagnostics/monitoring capabilities using prototype environments.

The ideal candidate should have a BS or higher in computer/software engineering, electrical engineering, or a related field, with 8+ years of industry experience in device drivers and RTOS development. Proficiency with the Simics modeling environment is crucial, along with a strong understanding of computer architecture and hardware-software integration.

Lightmatter offers a competitive compensation package, including a comprehensive health care plan, retirement savings matching, life insurance, generous time off, paid family leave, and stock options. The company is committed to diversity and inclusion, recruiting and promoting regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected statuses.

Join Lightmatter to be part of a team tackling complex challenges, making a significant impact, and pushing the boundaries of photonic AI processors and interconnects. It's an opportunity to be at the cutting edge of technology that's shaping the future of AI and high-performance computing.

Senior Software Engineer role at Lightmatter, developing device-software and firmware for photonic AI processors and interconnects.

Lightmatter is at the forefront of revolutionizing AI data center infrastructure with their groundbreaking 3D-stacked photonics engine, Passage™. This innovative technology enables the connection of thousands to millions of processors at the speed of light, catering to the most advanced AI and HPC workloads in extreme-scale data centers.

As a Backend Engineer at Lightmatter, you'll play a crucial role in developing the API that bridges photonic hardware and advanced interface systems. Your work will involve creating scalable backend services, implementing robust security protocols, and handling real-time data processing. You'll be responsible for designing and maintaining APIs that support the flow of live and historical data between backend services and the frontend Next.js application.

Key responsibilities include API design and development, hardware monitoring and management, backend service development, and collaboration with front-end teams. You'll also focus on security and authentication, real-time data processing, and performance optimization.

This role offers an exciting opportunity to contribute to cutting-edge technology in photonic AI and computing. You'll be part of a team of brilliant scientists, engineers, and industry leaders, tackling complex challenges and making a significant impact in the field.

Lightmatter offers competitive compensation, comprehensive benefits, and a flexible, hybrid workplace model. Join us in (re)inventing the future of computing with light!

Senior Backend Engineer developing APIs for photonic hardware and advanced interface systems at Lightmatter, revolutionizing AI data center infrastructure.

Lightmatter Engineering Jobs

Leading the revolution in AI data center infrastructure with the world's first 3D-stacked photonics engine for advanced AI and HPC workloads.