Careers - Lightmatter®

In this role, you will lead the development of a comprehensive High Temperature Operating Life (HTOL) Test Software system, designing a scalable multi-chassis testing platform with real-time monitoring and data collection.

You'll develop internal Process Design Kits (PDKs) for Lightmatter's **photonic computing platform**, bridging photonics device design and system-level verification. Your work will ensure that simulation environments accurately predict physical layout behavior. This role offers the chance to shape the foundation of **groundbreaking photonic AI hardware** at a well-funded startup.

You'll lead **advanced packaging process integration** for Lightmatter's **3D-stacked photonics engine** enabling next-gen AI infrastructure. Your work will define assembly design rules and drive yield improvements. This role offers **impact on cutting-edge data center photonics** at a well-funded startup.

You will develop integrated and highly scalable laser solutions for silicon photonics AI communications and computation, working with cross-disciplinary teams to navigate design trade-offs and deliver high-volume laser products.

In this role, you will develop and validate the firmware stack for photonic AI processors and interconnects. Collaborating with cross-functional teams, you'll drive validation testing, debug embedded systems, and help define product architecture.

You will lead chip architecture definition for photonic products, collaborating with partners and engineers to deliver innovative solutions for AI data centers. Your work will involve co-optimizing optoelectronic interfaces, guiding a team of architects, and representing the company at industry events.

You will spearhead pathfinding and early prototyping of analog and mixed-signal solutions for next-generation optical-engine products, then take your ideas to high-volume production. You'll architect high-speed electro-optical interfaces and collaborate across teams to build a new kind of computer from the ground up.

You will define the digital architecture for a groundbreaking photonic-based communication fabric, working with cross-disciplinary teams to bring the product from concept to production. Your work will enable high-speed analog/photonic devices and interfaces with firmware/software, directly influencing the company's success.

You will define the digital architecture for photonic-based communication fabric, enabling high-speed AMS circuits and interfaces with firmware/software. You'll own the architecture from concept through production, collaborating with cross-functional teams and external partners to deliver groundbreaking products.

You'll provide technical support for Mac and Windows users, manage escalated tickets, troubleshoot networking issues, and maintain cloud infrastructure and endpoints. You'll work onsite in Mountain View to ensure the team has the technology and support they need to build AI data center infrastructure.

You will join a cutting-edge team developing high-speed analog transceiver solutions for silicon photonics. You'll design and lead AMS circuits, drive block-level specifications, and mentor junior engineers, advancing AI data center infrastructure with photonic technology.

You will collaborate with architects and engineers to develop innovative high-speed analog transceiver solutions for next-generation optical and wireline communication systems. This role involves micro-architecture development, designing analog/mixed-signal blocks, and validating performance in the lab.

You will lead chip architecture for photonics-based AI data center products, collaborating with external partners and internal teams to drive cutting-edge optical interconnect solutions from concept to production. Your work directly shapes the future of high-performance computing.

You'll develop and maintain photonics PDK design automation tools for Lightmatter's **3D-stacked photonics engine**, powering AI and HPC workloads. Your work will directly enable **extreme-scale data center infrastructure** and help shape the future of computing with light. Join a well-funded team reinventing **optical interconnect technology**.

You'll lead **STA sign-off** for flagship silicon photonics chips at advanced technology nodes. You'll collaborate with architecture, RTL, and DFT teams to **optimize timing closure** and drive chip implementation flows. This role offers a chance to **pioneer photonics-based interconnect solutions** with a world-class team.

You'll lead **novel hardware systems research** using Lightmatter's photonics technology, modeling **performance of training and inference workloads** at scale. Your insights will shape **high-performance rack-scale designs** and cutting-edge ML systems publications.

You'll architect next-gen devices using **Lightmatter's photonic interconnect technology** and collaborate with Tier 1 semiconductor companies. Your work will directly enable the next leap in **AI data center infrastructure**. This role offers a unique opportunity to shape cutting-edge hardware at a fast-growing startup.

You'll lead product definition and rollout for **silicon photonics-based hardware** at a **$4.4B AI infrastructure company**. You'll drive design wins with top semiconductor and cloud vendors, working across engineering, sales, and executive teams. This role offers the chance to **shape segment-defining product categories** in data center photonics.

You'll **characterize semiconductor lasers** for **Lightmatter's photonic computing architecture**, driving breakthroughs in AI data center infrastructure. Your work will directly impact **spectral purity and stability** of cutting-edge laser sources.

You will lead the development of advanced 3D packaging assembly and test processes for photonics-based AI accelerators, collaborating with foundries and OSAT partners to ensure high yield and reliability.

You'll architect **wafer, package, and system level characterization** strategies for Lightmatter's Silicon Photonic product line. You'll directly influence **design model validation** and collaborate with interdisciplinary teams. This role offers a chance to make a big impact in a fast-growing company.

You'll design silicon photonic devices for integrated laser systems, collaborating with cross-functional teams. Your core impact is optimizing components like couplers, muxes, and switches to meet performance targets. You'll work on **groundbreaking photonics solutions** in a fast-paced, collaborative environment where great ideas are prioritized.

You'll design **photonic integrated circuits** for **AI data center infrastructure** at a leading photonics company. Your work will enable **high-bandwidth, low-power interconnects** for extreme-scale computing, directly impacting the next generation of AI and HPC workloads.

You'll develop host control software for lasers, owning test infrastructure and embedded host controllers for CMIS-based laser control. Working across multidisciplinary teams, your work will directly impact laser bring-up, characterization, and qualification. You'll build reusable infrastructure that provides visible leverage across the company.

You'll lead system-level hardware design for **silicon photonics AI accelerators** and **interconnect products**, collaborating across teams to bring products from concept to production. This role offers the chance to work at the **leading edge of data center innovation**.

You'll collaborate with digital, photonics, and analog design teams to verify cutting-edge photonics engines for AI data centers. You'll develop UVM testbenches and Real Number Models to ensure design integrity. This role offers exposure to **AMS verification** and **formal verification** techniques.

You'll **lead ATE test development** for Lightmatter's **Silicon Photonics products** in high-volume manufacturing. Driving test strategies from pre-silicon to production, you'll **collaborate with multi-functional teams** and OSAT vendors to ramp to HVM at the speed of light.

You'll **invent novel hardware systems** using Lightmatter's photonics technology, **modeling performance** of Passage-enabled systems for training and inference. You'll collaborate across teams to design reference platforms and **publish cutting-edge ML systems research**.

You'll **own product success** from first silicon to high-volume manufacturing, driving **yield, quality, and cost optimization** for cutting-edge photonics. Your work will enable **AI data center infrastructure** at the speed of light.

As a Staff Photonics Design and Layout Engineer, you will design, layout, and test innovative photonic devices, owning large-scale photonic layouts for high-volume products. You'll collaborate across disciplines to tapeout products and contribute to Process Design Kits (PDK) development, directly influencing the company's success in creating silicon photonics-based optical interconnect solutions for AI-ML products.

You will work on UVM testbench techniques, real number modeling, and AMS verification for integrated digital, analog, and photonic devices. You'll collaborate with architects and designers to define validation flows and drive DV methodologies, ensuring high-quality tapeouts.

You will join a cutting-edge team at the forefront of silicon photonics and high-speed transceiver design, collaborating with architects and engineers to develop innovative analog transceiver solutions for next-gen optical and wireline communication systems.

You will design analog/mixed-signal circuits for next-generation optical and wireline communication systems, collaborating with architects and engineers to develop innovative solutions. Your work will drive the performance of control loops and data converters in silicon photonics products.

You will work with a cross-functional team to verify digital, analog, and photonic designs using UVM and AMS methods. Your role involves creating test plans, developing reusable testbench components, and ensuring high-quality tapeouts through both simulation and emulation.

You will validate the digital architecture for Lightmatter's Passage product, working with cross-functional teams to integrate complex AMS and photonic circuits. Your work will influence product definition, roadmaps, and ensure successful high-volume production.

As an Analog Architect at Lightmatter, you will lead pathfinding and early prototyping of analog and mixed-signal solutions for next-generation optical-engine products, working closely with engineering teams to bring innovations to high-volume production. This role offers the opportunity to build a new kind of computer from the ground up while solving groundbreaking challenges in AI data center infrastructure.

You'll design, develop, and build photonic test systems for **characterization and validation** of our products. You will collaborate with cross-functional teams to support **end-to-end development** of photonic systems. Join a team where your contributions directly impact the success of **innovative optical interconnect products**.

You'll lead **firmware validation and automation** for next-gen photonic AI processors. You'll design test frameworks to ensure reliability and performance of **photonic interconnect products**. This role offers a chance to work on cutting-edge optical computing technology.

You'll develop device software and firmware for Lightmatter's photonic AI processors and interconnects, collaborating with hardware and software teams to define control plane architecture and **integrate with data center administration capabilities**. You'll debug embedded systems using tools like GDB and JTAG, and **participate in customer engagements** to gather requirements. This role offers a chance to work on cutting-edge **photonic computing technology** at a well-funded startup.

You'll lead the development of **integrated laser solutions** for silicon photonics AI communications and computation. You will work with cross-disciplinary teams to assess feasibility, execute designs, and validate performance. This role offers the opportunity to build innovative laser solutions from the ground up at a well-funded startup.

You'll develop the device software and firmware stack for Lightmatter's photonic AI processors and interconnects. You'll collaborate with hardware teams to define **control plane architecture** and integrate with DataCenter administration tools. This role offers the chance to work on cutting-edge **photonic computing technology** at a well-funded startup.

You'll develop device software and firmware for photonic AI processors and interconnects. Your work will define control plane and diagnostics architecture for **photonic transceivers**. You'll collaborate across multidisciplinary teams to build next-gen **AI data center infrastructure**.

You'll define the control plane architecture for next-generation **photonic interconnect products** and implement **active laser control algorithms**. You will leverage your expertise to enable **extreme-scale AI computing clusters**. This role offers the chance to shape foundational technology at a high-growth AI infrastructure company.

You'll drive **STA sign-off** for flagship Silicon photonics chips at leading technology nodes. Your work will directly enable **AI data center interconnects** at the speed of light. This role offers a chance to **trailblaze new industry problems** in a fast-growing company.

You'll implement complex digital blocks in advanced tech nodes, driving timing closure and power integrity for high-performance ASICs. Working alongside world-class engineers, you'll define system optimizations pioneering new photonics challenges. This role offers **hands-on impact** on cutting-edge AI hardware at a **$4.4B valued startup**.

You'll implement complex digital blocks in advanced process nodes for high-performance ASICs at Lightmatter, driving timing closure and physical verification. You'll work alongside world-class scientists on **photonics-based AI infrastructure** to **trailblaze problems new to the industry**. This role offers the unique chance to shape the future of computing with light.

You'll lead **STA sign-off** for flagship Silicon photonics chips at advanced nodes, collaborating with architecture and RTL teams to develop timing constraints and closure flows. This role offers the chance to work on **cutting-edge photonics-based interconnect solutions** at a $4.4B company.

You'll work on leading-edge packaging technologies to enable AI architectures that set new industry standards. You'll perform mechanical design and structural analysis for emerging packaging technologies. This role offers the chance to impact **extreme-scale data centers** and high-end compute products.

You'll lead **thermal analysis** for cutting-edge **AI data center photonics** products. Your work will enable groundbreaking architectures that set new industry standards in compute power and efficiency. This role offers the chance to solve complex thermal challenges in a fast-growing company backed by $400M in funding.

You'll lead **technical writing** for **silicon photonics products** at a cutting-edge AI data center infrastructure company. Your documentation will enable engineers and researchers to deploy advanced hardware and software. You'll define content strategy and drive **AI-enabled authoring workflows**.

You'll **develop chassis and rack platforms** for next-generation AI servers. Your work directly impacts the packaging of optical and electrical components for optimal thermal performance. This role offers the chance to drive design in a **dynamic startup environment** with a world-class team.