Optical Design Engineer at Lumilens | San Jose

About LumilensAt Lumilens, we are pioneering the essential photonics infrastructure that will drive the AI supercomputing revolution of the future. From chip-to-chip optical interconnects to scalable photonic engines, we are unlocking a new era of computing that is faster, cooler, and significantly more efficient.Backed by Mayfield and led by industry veterans who have built and scaled transformative technologies, we are a well-funded startup. This is not just about incremental innovation; it’s a unique opportunity to fundamentally rethink the optical layer from silicon upwards. You will collaborate with world-class engineers to tackle some of the most challenging problems in optics, systems, and scalability. Each line of code, design decision, and breakthrough you contribute will play a vital role in shaping the infrastructure of tomorrow.If you seek a mission-driven environment with momentum and the chance to make a significant impact, join us on this exciting journey. We are just getting started.About the RoleAs an Optical Design Engineer, you will be instrumental in developing and validating the coupling optics essential for delivering optical signals of up to 1.6 Tb/s into our customers’ networks.Primary Duties & ResponsibilitiesLeverage raytracing software tools (e.g., Zemax) to conduct optical simulations and design lens and fiber-based coupling solutions for Silicon Photonics-based electro-optical components.Consult with suppliers on optics design concepts and solutions to enhance the performance of optical transceivers.Design and execute experiments to assess the performance of optical coupling solutions.Offer expert technical support to mechanical designers and process engineers to ensure optimal performance under realistic manufacturing conditions.

Join Lumilens as an Optical Systems Engineer, where you will play a vital role in designing and developing cutting-edge optical systems. This position demands creativity and technical expertise to innovate and enhance our optical products. Collaborate with a talented team of engineers and contribute to exciting projects that push the boundaries of optical technology.

Join Lumilens as an Optical Test Engineer, where you will play a pivotal role in the development and testing of innovative optical technologies. You will be responsible for designing and conducting tests to ensure product performance meets industry standards. Your expertise in optical engineering will be essential in analyzing data and providing actionable insights to improve product quality.

Join Lumilens as the Director of Product Line Management for our Optical Division, where you will lead innovative product strategies and drive market success. You will work closely with cross-functional teams to develop cutting-edge optical solutions that meet customer needs and enhance our product offerings.In this role, you will oversee the entire product lifecycle from ideation to launch, ensuring alignment with company goals and market trends. Your leadership will be critical in fostering a collaborative environment that encourages creativity and excellence.

About LumilensAt Lumilens, we are at the forefront of developing the essential photonics infrastructure that will drive the future of AI supercomputing. Our innovative solutions range from chip-to-chip optical interconnects to scalable photonic engines, ushering in a new era of computing that is faster, cooler, and significantly more efficient.As a well-financed startup backed by Mayfield and led by industry veterans who have successfully built and scaled groundbreaking technologies, we offer a unique chance to rethink the optical layer from the silicon level. Join a talented team of engineers tackling some of the most challenging problems in optics, systems, and scalability. Every design decision and code line you contribute will play a pivotal role in shaping the infrastructure of the future.If you seek a mission-driven environment with momentum and the opportunity to make a significant impact, come aboard our rocket ship. We are just getting started!

About LumilensAt Lumilens, we are pioneering the foundational photonics infrastructure that will drive the next generation of AI supercomputing. Our innovations, ranging from chip-to-chip optical interconnects to scalable photonic engines, are set to usher in an era of computing that is faster, cooler, and significantly more efficient.As a well-funded startup supported by Mayfield and led by industry veterans, we are not just making incremental advancements; we are embarking on a transformative journey to revolutionize the optical layer from the silicon up. You'll be part of a team comprised of world-class engineers tackling some of the toughest challenges in optics, systems, and scalability. Every line of code, every design decision, and every breakthrough you contribute will play a crucial role in shaping the future infrastructure.If you seek a mission-driven environment with momentum and the opportunity to make a significant impact, come join our exciting journey. We’re just getting started.

About LumilensAt Lumilens, we are pioneering the vital photonics infrastructure that powers the future of AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, we are ushering in a new era of computing that is faster, cooler, and significantly more efficient.As a well-funded startup supported by Mayfield, we are led by industry veterans who have successfully built and scaled transformative technologies. At Lumilens, we are focused on developing high-speed photonics products specifically designed to enhance the future of AI infrastructure and high-performance computing.This is not just incremental innovation; it represents a ground-floor opportunity to fundamentally rethink the optical layer from the silicon level. You will collaborate with a team of world-class engineers tackling some of the most challenging problems in scaling optical systems. Every line of code, every design decision, and every breakthrough you contribute will help shape the infrastructure of tomorrow.If you are seeking a mission-driven environment, rapid momentum, and the opportunity to make a significant impact, join us on this exciting journey. We’re just getting started.About the Role – Optical Product Test EngineerIn your role as an Optical Product Test Engineer, you will be essential in validating and ensuring the quality of Lumilens’ photonic components, modules, and systems. This position merges hands-on production testing with the development of testing protocols and reporting, supporting both new product introductions (NPI) and volume manufacturing.You will closely collaborate with optical design, hardware, and manufacturing teams to perform calibration, characterization, and troubleshooting of next-generation photonics technologies that are set to drive the future of AI and high-performance computing infrastructure.Primary Duties & ResponsibilitiesCharacterize and test fiber optic components and modulesAnalyze test results to ensure adherence to performance specifications and quality standardsMaintain precise and detailed records of testing procedures and outcomesGenerate detailed test reports for both internal and external stakeholdersAssist in troubleshooting and root cause analysis to resolve product issuesDesign, plan, and conduct optical and fiber testing on components, devices, and systemsCollaborate with cross-functional engineering teams to support NPI and the ramp-up of manufacturing

JOIN LUMILENSAt Lumilens, we are at the forefront of creating the essential photonics infrastructure that will drive the future of AI supercomputing. By developing chip-to-chip optical interconnects and scalable photonic engines, we are paving the way for a new paradigm of computing that is faster, cooler, and significantly more efficient.Backed by Mayfield, our well-funded startup is led by industry veterans who have successfully built and scaled transformative technologies. This is not just about incremental innovation; it’s a ground-floor chance to revolutionize the optical layer from the silicon level. Collaborate with a team of top-notch engineers to tackle some of the most challenging problems in optics, systems, and scalability. Every line of code you write, every design decision you make, and every breakthrough you contribute will play a pivotal role in shaping the infrastructure of the future.If you’re seeking a mission-driven role with momentum and the opportunity to make a significant impact, come aboard our rocket ship. We are just getting started!

We are seeking a talented Power Integrity Engineer to join our innovative team at Lumilens in San Jose, California. In this role, you will be responsible for ensuring the integrity of power systems within silicon components, contributing to the advancement of our cutting-edge technology.As a Power Integrity Engineer, you will work closely with cross-functional teams to analyze and optimize power distribution networks, develop simulations, and conduct testing to ensure product reliability. Your expertise will play a crucial role in delivering high-performance solutions that meet our clients' needs.

ABOUT LUMILENSAt Lumilens, we are revolutionizing the photonics infrastructure that will drive the next generation of AI supercomputing. Our innovations range from chip-to-chip optical interconnects to scalable photonic engines, enabling a new era of computing that is faster, cooler, and significantly more efficient.As a well-funded startup supported by Mayfield and led by industry veterans with a track record of scaling transformative technologies, we offer a unique opportunity to innovate from the ground up. Join our world-class team of engineers as we tackle some of the most challenging problems in optics, systems, and scalability. Every line of code and every design decision you contribute will shape the future of infrastructure.If you are driven by a mission, thrive in a dynamic environment, and are eager to make a significant impact, come aboard our exciting journey. We are just getting started!POSITION OVERVIEWWe are looking for a Technical Program Manager to join our rapidly expanding team. This role offers a unique chance to define the technical vision for our products, collaborate with a multidisciplinary team, and deliver meaningful outcomes from inception to execution. The ideal candidate will engage closely with contract manufacturers, suppliers, and internal cross-functional development teams to achieve product goals while fostering a culture of quality and continuous improvement.What You Will Do:Lead the execution of product development programs across the development team, focusing on optical hardware products for high-speed optical networks.Collaborate with relevant development teams to identify technical gaps and devise solutions to ensure timely execution and successful product launches.Assist the product team in managing manufacturing partners to complete essential technical design activities before product launches, including reliability, design verification testing, and compliance assessments.Facilitate collaboration with cross-functional teams including Photonics Design, Hardware Design, Packaging, Manufacturing, Quality Engineering, Product Marketing, and Supply Chain to ensure robust product development and a smooth transition to production.

About LumilensAt Lumilens, we are pioneering the essential photonics infrastructure that propels the future of AI supercomputing. Our innovations range from chip-to-chip optical interconnects to scalable photonic engines, ushering in a new era of computing that is faster, cooler, and significantly more efficient.As a well-funded startup, Lumilens is backed by Mayfield and led by industry veterans who have developed and scaled transformative technologies. This is not about incremental improvements; it’s a unique chance to redefine the optical layer, starting from silicon. Join a team of elite engineers tackling some of the most complex challenges in optics, systems, and scalability. If you seek purpose, momentum, and the opportunity to make a significant impact, come aboard our exciting journey. We’re just getting started.Position OverviewLumilens is in search of a Director of Software Manufacturing to spearhead the strategy, development, and execution of software systems pivotal for the high-volume manufacturing of next-gen optical transceivers (800G, 1.6T, and beyond). This role encompasses building and scaling the software infrastructure that enhances yield, testing, calibration, and production efficiency throughout our photonics manufacturing ecosystem.This vital leadership position resides at the crossroads of software, manufacturing, and hardware systems. You will define and implement manufacturing software frameworks that facilitate end-to-end production—from wafer-level testing and module assembly to final system validation—ensuring high yield, reliability, and throughput at scale.The perfect candidate will possess extensive experience in manufacturing software, test automation, and production systems within semiconductor, optical transceivers, or high-performance hardware environments, along with a proven track record in supporting hyperscale customer deployments.

About Lumilens Lumilens builds photonics infrastructure for AI supercomputing. The team develops technology from chip-to-chip optical interconnects to scalable photonic engines, aiming for faster, cooler, and more efficient computing. Backed by Mayfield and led by experienced industry leaders, Lumilens operates as a well-funded startup. The company focuses on rethinking the optical layer from the silicon up. Engineers at Lumilens work closely together to address complex challenges in optics, systems, and scalability. The company is in an early growth phase, offering the chance to shape foundational technology. Role Overview: Software Engineer – Computer Vision & Robotics This position centers on developing advanced systems for intelligent automation within Lumilens’s manufacturing and photonics platforms. The role combines robotics, AI, and high-performance software to build frameworks that help machines perceive, learn, and interact with complex physical environments. The engineer will design and implement manufacturing automation systems, integrate computer vision and AI algorithms into real-world applications, and optimize performance for simulation, training, and edge deployment. Collaboration with hardware, manufacturing, and systems teams is essential to move intelligent automation from prototypes to scalable production. What You Will Do Develop and deploy software for manufacturing automation using computer vision and AI. Integrate vision and robotics algorithms into production systems. Optimize software for simulation, model training, and deployment on edge devices. Work closely with hardware and manufacturing teams to scale automation solutions. What We Look For Strong experience in computer vision and robotics software development. Hands-on expertise with ROS (Robot Operating System) and distributed systems. Track record of building reliable, real-time software for robotics, autonomous vehicles, or automated manufacturing. Location San Jose

Lumilens is seeking an innovative and driven Lead Systems Application Engineer to join our dynamic team in San Jose. This role is essential for leading the development and implementation of advanced software solutions tailored for our systems applications. You will collaborate with cross-functional teams to enhance product functionality and improve user experience.

Join Lumilens as an IC Package FEA Engineer, where you will play a pivotal role in the design and analysis of advanced semiconductor packaging solutions. We are looking for innovative minds who are passionate about pushing the boundaries of technology and contributing to cutting-edge projects.

Join Lumilens as the Director of Silicon Test Engineering, where you'll lead a talented team in the development of cutting-edge silicon testing strategies. In this pivotal role, you will oversee the design, implementation, and optimization of test processes to ensure the highest quality standards are met. Your leadership will directly contribute to the advancement of our innovative technologies.

Join Lumilens as a Principal Engineer in Manufacturing Test PlatformAt Lumilens, we are at the forefront of developing transformative photonics infrastructure that underpins the next generation of AI supercomputing. Our innovations span from cutting-edge chip-to-chip optical interconnects to scalable photonic engines, all aimed at ushering in a new era of computing that is faster, cooler, and significantly more efficient. As a well-funded startup supported by Mayfield and led by industry veterans who have pioneered transformative technologies, we offer a ground-floor opportunity to revolutionize the optical layer from the silicon level up. Join a team of world-class engineers tackling some of the toughest challenges in optics, systems, and scalability. Every line of code you write, every design decision you make, and every breakthrough you achieve will play a crucial role in shaping the infrastructure of the future. If you are seeking a mission-driven role, an energetic environment, and a chance to make a substantial impact, embark on this exciting journey with us. We’re just getting started.Position OverviewIn this pivotal role, you will develop diagnostics and manufacturing software for the design, testing, and productization of cutting-edge photonics solutions for data centers. Collaborating closely with various optical transceiver engineering teams, you will guide projects from initial concept through to final production, ensuring our optical transceiver solutions effectively reach the market.This position requires a solid and diverse software background coupled with a good understanding of hardware design and manufacturing practices. We also encourage applications from candidates with deep expertise in related areas who are eager to learn and grow.Key ResponsibilitiesDesign, implement, and validate manufacturing tests for mass production of photonic products aimed at data centers.Create high-level software abstractions to interface with low-level hardware components.Develop reusable test scripts and modules to validate firmware behavior, execute regression tests, and support new product introduction (NPI) testing and hardware bring-up.Conduct root-cause analysis of reported failures and isolate issues.Monitor, collect, and analyze data to identify issues and propose solutions that enhance system reliability and efficiency.Integrate with databases or dashboards for visualizing and analyzing test results.

Join Lumilens as a Principal Engineer in Advanced Package Technology and take the lead in shaping innovative solutions in the field of advanced packaging. In this pivotal role, you will leverage your extensive expertise to drive the development and implementation of cutting-edge package technologies. Collaborate with cross-functional teams to enhance product performance and reliability, while ensuring compliance with industry standards.

About Etched Etched builds the first AI inference system tailored for transformers. The company’s custom ASICs deliver over 10x the performance of standard solutions, with lower costs and latency than a B200. These chips enable products like real-time video generation models and advanced reasoning agents. Etched is backed by major investors and staffed by engineers focused on reshaping AI infrastructure. Role Overview: Design Verification Engineer - SoC This San Jose-based role sits within the Systems and Performance Verification team. The Design Verification Engineer ensures Etched’s custom IPs, including systolic arrays, DMA engines, and NoCs, are ready for silicon. The work spans verifying performance, collaborating with architects and designers, and supporting the entire hardware-software stack. Expect to tackle complex verification challenges alongside colleagues in architecture, RTL, and software/firmware. What You Will Do Work with architects and RTL designers to verify performance features against models, both before and after silicon. Collaborate with software teams to spot and resolve performance bottlenecks. Create test plans and develop tools for performance tuning, correlation, and verification. Maintain and improve architectural performance models. Write tests in SystemVerilog, Python, or vectors to debug and align RTL with performance models. Develop checkers in SystemVerilog or Python to verify performance features. Implement coverage monitors and analyze results to ensure thorough testing. Investigate and tune performance issues on silicon. Lead end-to-end performance tuning to optimize hardware use, software efficiency, and architectural fit across the ASIC design lifecycle. What Makes a Strong Candidate Understanding of digital design, RTL, and ASIC design flows. Hands-on experience with performance verification tools and methodologies. Strong analytical and problem-solving abilities. Comfort working on several projects at once and adapting to shifting priorities.

About EtchedEtched is pioneering the development of the world’s first AI inference system specifically designed for transformers, achieving over 10 times the performance and significantly reduced cost and latency compared to a B200. Our ASICs enable the creation of products that are unattainable with traditional GPUs, such as real-time video generation models and highly sophisticated deep reasoning agents. Supported by substantial investments from leading venture capitalists and a team of top-tier engineers, Etched is transforming the foundational infrastructure of one of the fastest-growing industries globally.Job SummaryAs an RTL Design Engineer at Etched, you will play a vital role in validating the performance and efficiency of our AI chips. Your responsibilities will include developing and executing design verification strategies for both current and forthcoming ASIC designs. Collaborating with cutting-edge machine learning architectures, you will thrive in our dynamic environment, gaining rapid expertise in advanced technologies while contributing significantly to Etched’s success.Representative ProjectsDesign and implement a block to efficiently handle floating point mathematical operators.Collaborate with the microarchitecture team to ensure compliance with timing and area specifications.You May Be a Good Fit If YouPossess a minimum of 5 years of experience in RTL development.Have a solid background in high-speed digital logic.Are proficient in standard RTL design and synthesis tools.Have familiarity with verification processes and writing test benches.Are eager to learn about transformers and the latest advancements in artificial intelligence.Are ready to start immediately.Preferred Qualifications (Nice-to-Have)Experience with PCIe, Ethernet, or HBM technologies.Understanding of transformer models and machine learning concepts.Knowledge of numerical representations and functions.Ability to program in Python or another scripting language.

About EtchedAt Etched, we are at the forefront of innovation, developing the world’s first AI inference system that is meticulously designed for transformers. Our technology offers over 10x the performance of traditional systems like the B200, while significantly reducing costs and latency. With our advanced ASICs, we empower the creation of groundbreaking products, enabling real-time video generation and complex reasoning models that surpass the capabilities of GPU-based systems. Supported by substantial investments from prominent industry leaders and a team of top-tier engineers, Etched is reshaping the infrastructure of the fastest-growing sector in history.Job SummaryWe are seeking highly skilled Physical Design Engineers to join our dynamic team. In this pivotal role, you will take charge of block-level implementation and verification, spearhead timing closure and PPA optimization, oversee third-party design collaborations, and enhance our design workflows and iteration speed.Key ResponsibilitiesGain a comprehensive understanding of the physical design processExecute PD flows to achieve block closure, support ASIC infrastructure, automate PD processes, and refine CAD toolsCollaborate with RTL Designers to provide insightful Physical Design feedback aimed at enhancing PPADevelop and manage dashboards that track project convergence related to PDOptimize tool workflows by partnering with EDA vendors to adopt the latest featuresTake responsibility for achieving block-level closureOversee the outsourcing of physical design tasks to third-party service providersYou may be a great fit if you possess the following qualifications:5-10+ years of relevant experience in Physical DesignProficiency with tools, workflows, and design methodologies spanning RTL synthesis to GDSII sign-offExperience in back-end design and timing closure on advanced process nodes (5nm and below)Familiarity with Cadence (Innovus, Genus) or Synopsys (ICC2, Fusion Compiler) automated RTL-to-GDSII flowsKnowledge of sign-off tools (PrimeTime, Tempus, Voltus, etc.)Expertise in UPF-based low power design methodologies, power verification, synthesis, scan insertion/ATPG, formal verification, floorplanning, placement, CTS, routing, IR drop, and EM/antenna analysisCreative problem-solving skills with a first-principles approach