Principal Software Engineer

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.

Join Western Digital as an Analog/Mixed Signal Design Engineer and play a pivotal role in developing innovative technologies that drive the future of data storage solutions. You will work alongside a talented team of engineers to design, develop, and optimize analog and mixed-signal components for cutting-edge products.

Join Our Innovative Team as an Analog/Mixed-Signal Circuit Design Engineer! At SK hynix America, we lead the charge in semiconductor innovation, crafting advanced memory solutions that power everything from smartphones to expansive data centers. As a pioneering force in DRAM and NAND flash technologies, our mission revolves around driving the evolution of mobile technology, enhancing cloud computing, and spearheading future innovations. Our state-of-the-art memory technologies are vital to today’s most sophisticated electronic devices and IT infrastructure, delivering superior performance and user experiences across the digital realm. We invite visionary minds to join us in shaping the future of technology. At SK hynix America, you’ll collaborate with a team dedicated to pioneering cutting-edge memory solutions while upholding a strong commitment to sustainability. We are not merely adapting to technological shifts; we are propelling them forward with substantial investments in artificial intelligence, machine learning, and environmentally conscious operational practices. As we expand our market presence and push the limits of semiconductor technology, we welcome you to be part of our journey in creating next-generation memory solutions that will define the future of computing.

Astera Labs develops advanced rack-scale AI infrastructure, specializing in innovative connectivity for modern AI workloads. The company partners with hyperscalers and ecosystem collaborators to deliver solutions that integrate CXL®, Ethernet, NVLink, PCIe®, and UALink™ semiconductor technologies with the COSMOS software suite. This approach supports unified, flexible systems that scale easily, while custom solutions complement standards-based offerings. Learn more at www.asteralabs.com. Role overview This PhD internship focuses on Analog/Mixed-Signal IC Design (SerDes) and will be based in either Irvine, CA or San Jose, CA. The intern will join a team dedicated to advanced node CMOS products and high-performance connectivity solutions. What you will do Design and verify analog and mixed-signal integrated circuits for advanced node CMOS products Develop and validate circuits such as PLLs, DLLs, ADCs, regulators, amplifiers, transmitters, receivers, and CDRs Ensure circuits meet strict performance standards for connectivity applications Work on analog and clocking blocks for high-speed data interfaces Use industry-standard tools, including Spectre and MATLAB, for design and verification Who we’re looking for Astera Labs seeks a motivated designer with a strong interest in analog and mixed-signal circuit design. Curiosity about advanced connectivity products and a collaborative approach to engineering are important in this role.

Astera Labs designs connectivity solutions for AI infrastructure, partnering with hyperscalers and ecosystem leaders to support modern data systems. The company’s Intelligent Connectivity Platform integrates technologies such as CXL®, Ethernet, NVLink, PCIe®, and UALink™ with the COSMOS software suite, supporting both standard and custom architectures. Role overview This Analog/Mixed-Signal Design Engineer position is for a new graduate, starting in 2026 and based in San Jose, CA. The focus is on designing advanced node CMOS products for high-performance connectivity applications. What you will do Design and verify analog and mixed-signal circuits, including Phase-Locked Loops (PLLs), Delay-Locked Loops (DLLs), Analog-to-Digital Converters (ADCs), voltage regulators, amplifiers, transmitters (TX), receivers (RX), and Clock Data Recovery (CDR) circuits. Develop analog and clocking blocks for connectivity solutions. Use industry-standard tools such as Spectre and MATLAB for design and verification. Requirements New graduate with a strong interest in analog and mixed-signal IC design for connectivity applications. Motivated to work on advanced node CMOS products. Ready to contribute to a collaborative team. Learn more about Astera Labs at www.asteralabs.com.

Job Title: Principal Engineer, Signal Integrity and Power IntegrityOffice Location: San Jose, CAWork Model: OnsiteAbout SK hynix AmericaAt SK hynix America, we are pioneers in semiconductor innovation, leading the development of advanced memory solutions that power a wide array of devices, from smartphones to data centers. As a global frontrunner in DRAM and NAND flash technologies, we are driving the evolution of mobile technology, enhancing cloud computing capabilities, and exploring future technologies. Our state-of-the-art memory technologies are crucial for the most advanced electronic devices and IT infrastructures, providing improved performance and superior user experiences across the digital realm.We invite visionary minds to join our mission of shaping the future of technology. Here at SK hynix America, you will collaborate with a team dedicated to pioneering advanced memory solutions while upholding a strong commitment to sustainability. We are not merely responding to technological advancements; we are leading them through significant investments in artificial intelligence, machine learning, and environmentally friendly practices. As we expand our market influence and redefine the boundaries of semiconductor technology, we welcome you to be a part of our journey in creating the next generation of memory solutions that will shape the future of computing.Job Summary:SK hynix America is on the lookout for a Principal Engineer to spearhead the Signal Integrity and Power Integrity (SIPI) strategy for cutting-edge advanced packaging technologies. In this role, you will be responsible for the design, analysis, and validation of next-generation advanced packaging solutions for HBM and beyond, including logic-memory integration. This position requires extensive technical expertise in high-speed interface design, collaboration with global R&D teams, and contributions to industry standards for advanced packaging.Responsibilities:Strategic Leadership: Define and manage the SIPI roadmap for advanced packaging families, ensuring alignment of technical direction with product and business objectives.Architecture & Design: Lead the development of high-performance SiP architectures (HBM, interposer, 3D stacks) and validate power delivery and signal integrity throughout the entire stack—from silicon to substrate.Methodology Development: Innovate and disseminate best-practice SIPI methodologies, including electromagnetic extraction, multi-port S-parameter modeling, and power-network analysis for complex packaging environments.Technical Ownership: Supervise the complete design flow (package definition, simulation, and validation).

Join Renesas Electronics Corporation as a Senior Manager, Analog Engineering in San Jose, California. In this pivotal role, you will lead a team of skilled engineers in the design and development of advanced analog and mixed-signal circuits. You will oversee project timelines, mentor team members, and collaborate with cross-functional teams to deliver innovative solutions that drive our product development forward.

Lumotive is at the forefront of a revolutionary shift in programmable optics, where light is managed with the same intelligence and adaptability as software. Central to this innovation is our groundbreaking flat CMOS-based “general-purpose optic.” Lumotive’s Light Control Metasurface (LCM™) beam forming chips can be programmed to serve various optical functions such as beam steering mirrors, lenses, and beam splitters, effectively replacing cumbersome mechanical optical components with a fully digital, reconfigurable semiconductor. This advancement is set to transform numerous sectors, including 3D sensing, imaging, optical networking, and free-space optical communication, much like the transition from analog to digital in electronics. Programmable optics promise to redefine industries ranging from robotics and autonomous vehicles to AI, defense, and healthcare.Our inaugural commercial application is in LiDAR technology, where our software-defined beam steering chips are already facilitating compact, high-performance solid-state sensors. These sensors are being utilized in smart infrastructure, robotics, and mobility systems through partnerships with leading module manufacturers and solution integrators.With a portfolio exceeding 200 patents and a growing market presence, Lumotive is pioneering the world’s first digital platform for light, thereby reshaping the optical landscape.Position Overview:Lumotive is actively seeking a highly skilled and hands-on Director of Analog Engineering to spearhead the creation of next-generation analog circuitry for beam steering mixed-signal ASIC controllers. This pivotal leadership position is essential for shaping and advancing the development of active transistor matrix arrays and analog channel driver technologies in close collaboration with our optical and ASIC design teams.You will manage the complete lifecycle of mixed-signal IP, from architectural definition and design through layout, tape-out, silicon bring-up, and mass production. This role demands an accomplished technical leader with extensive domain knowledge, outstanding problem-solving abilities, and a proven track record of thriving in a dynamic, interdisciplinary environment.

Join Lumilens as a Senior/Principal Signal Integrity Engineer specializing in Silicon Photonics and AI Interconnects. In this pivotal role, you will collaborate with a talented team to innovate and develop cutting-edge solutions that enhance signal integrity in advanced photonic systems.Your expertise in high-speed digital and analog signal integrity analysis will be invaluable as you lead projects that bridge the gap between technology and application. You will be responsible for designing, modeling, and testing signal integrity for next-generation interconnects, ensuring optimal performance and reliability.

Join Aizen as Our Principal Product DesignerAt Aizen, we are dedicated to simplifying the complexities of artificial intelligence while enhancing its capabilities. Our comprehensive platform effectively streamlines the AI pipeline—encompassing data ingestion, orchestration, model training, deployment, and monitoring—empowering businesses to concentrate on what truly matters: creating and scaling exceptional AI solutions without hassle.We embarked on this journey to eliminate cumbersome AI workflows and fragmented solutions that obstruct AI adoption. Today, our platform is trusted by businesses ranging from dynamic startups to established Fortune 500 corporations, enabling them to effortlessly scale their AI operations. By transforming the way AI is developed, deployed, and managed, we are making AI more accessible and impactful than ever. If you’re passionate about building innovative technology, tackling real-world challenges, and collaborating with a world-class engineering team, we would love to connect with you.About Our TeamFounded by a group of serial entrepreneurs with extensive experience in data storage, distributed systems, and real-time AI architecture, Aizen's team has successfully built and scaled technology companies, some of which have led to notable $1B+ exits. We have designed Aizen from the ground up to simplify the AI pipeline, enhance performance, and make AI genuinely accessible for enterprises of all sizes.Role OverviewWe are seeking a talented Principal Product Designer to spearhead our design initiatives at Aizen. In this individual contributor role, you will champion the design vision for our platform, collaborating closely with a skilled team of engineers to create intuitive, aesthetically pleasing user experiences. Your contributions will lay the groundwork for our design system and be crucial in transforming intricate AI workflows into streamlined, user-friendly interfaces.This position offers a unique opportunity to influence product development from the ground up at an early-stage startup, allowing you to make a significant impact on our team, products, and design culture—shaping the aesthetic and functional aspects of AI-powered tools for enterprises globally.Key ResponsibilitiesEstablish and Implement the Design Vision – Define and execute a comprehensive design strategy for the Aizen platform, ensuring a seamless, intuitive, and visually engaging user experience.Develop and Manage the Design System – Create a scalable design system from scratch to ensure consistency, efficiency, and a robust design foundation throughout the product.Collaborate with Cross-Functional Teams – Work alongside product managers, engineers, and stakeholders to deliver user-centric solutions.Conduct User Research and Testing – Gather user feedback to inform design decisions and refine user experiences.

About EtchedEtched is pioneering the development of the world's first AI inference system specifically designed for transformer models, achieving over 10x the performance and significantly lower costs and latency compared to traditional methods like B200. With our proprietary ASICs, you can create revolutionary products, such as real-time video generation models and highly sophisticated reasoning agents. Supported by substantial investments from top-tier investors and driven by a team of leading engineers, Etched is transforming the infrastructure for the fastest-growing industry of our time.Job OverviewWe are looking for a talented Substrate IC Package Layout Design Engineer to join our dynamic team. In this role, you will oversee the complete design process of intricate IC substrate packages, catering to high-power consumption and high-speed signaling requirements. The ideal candidate will bring substantial experience in large substrate designs (>50mm), complex power delivery networks, and high-speed signaling solutions (up to and exceeding 50GHz). You will collaborate closely with silicon, signal integrity, power integrity, and system engineering teams to co-design state-of-the-art substrates with OSAT providers, with a strong emphasis on optimizing power delivery through substrate technology.Key ResponsibilitiesLead the design and development of sophisticated IC substrate layouts for high-performance AI processors and accelerators.Design complex multi-layer substrate packages (>50mm) with high pin counts and intricate routing requirements.Ensure robust power delivery designs capable of supporting custom silicon solutions exceeding 700W.Develop high-speed signal routing solutions that facilitate >50GHz signaling while minimizing issues such as loss and crosstalk.Work alongside SI/PI engineers to determine signal integrity and power integrity requirements, implementing effective solutions within the substrate layout.Optimize CoWoS (Chip-on-Wafer-on-Substrate) designs for enhanced thermal and electrical performance.Collaborate with chip design, packaging, and manufacturing teams to ensure design feasibility and manufacturability.Conduct design validation and verification processes to ensure compliance with specifications.

San Jose or LA, CA (Hybrid)At FloQast, we are on a mission to transform the way accounting teams function by leveraging AI-native workflows. Our platform is a trusted operating system for thousands of global organizations, streamlining complex financial processes into swift, reliable, and scalable systems.We are seeking a Principal Software Engineer who not only develops software but also influences platform architecture, enhances team productivity, and drives significant innovation.This pivotal role involves making architectural decisions that will impact the entire FloQast application ecosystem and propel innovation across our product offerings.

Join our innovative team at Renesas Electronics as a Principal Product Engineer. In this pivotal role, you will be responsible for leading the design and development of cutting-edge semiconductor products. You will collaborate closely with cross-functional teams to ensure product excellence and alignment with our strategic vision.

Archer Aviation is a pioneering aerospace firm headquartered in San Jose, California. We are at the forefront of developing an all-electric vertical takeoff and landing (eVTOL) aircraft, revolutionizing sustainable air mobility. Our mission is to create a quieter, more efficient urban air transportation solution capable of carrying four passengers with minimal environmental impact.At Archer, we are driven by ambitious goals and complex challenges. Our commitment to workplace diversity enhances our innovative capabilities and fosters a culture of inclusivity and teamwork that we believe is vital for success. We strive to create an equitable environment that celebrates the unique contributions of every team member.The OpportunityAs the technical leader in our quality team, you will play a pivotal role in defining the quality standards and process controls for our inaugural certified aircraft, Midnight. Your expertise will be crucial in helping us achieve the highest safety levels akin to commercial airlines while making urban air transport accessible to everyone, thus setting a benchmark for the emerging advanced air mobility sector. This is a contract position with an expected duration of approximately six months.What You’ll DoAs the lead Metrologist at Archer, you will report to the Head of Quality and be responsible for the development and management of the metrology program.Drive the development and implementation of metrology tools to ensure that Midnight adheres to its design specifications.Lead the creation of an aircraft inspection plan during the testing phase at both our San Jose and Covington facilities.Oversee the verification processes for the Midnight program, utilizing a risk-based approach to inspection, including design reviews and tolerance stack-up analyses.Champion the development and deployment of advanced metrology equipment such as laser trackers and Faro arms.Specific tasks include establishing critical wing dimensions with laser trackers, implementing GearPro on CMMs at Archer, and creating training programs for inspectors to measure vital propeller features.Collaborate effectively with cross-functional teams to embed quality principles into all business processes.

Join KIOXIA as a Principal Standards Engineer specializing in SSD Industry Standards, where you will be at the forefront of defining globally recognized specifications for innovative storage solutions. This pivotal role will allow you to advance KIOXIA's strategic interests while shaping the future of the storage industry. You'll engage in monitoring, analyzing, reporting, and crafting technical proposals that influence product interoperability and cutting-edge features.In this role, you will collaborate with international teams within KIOXIA and engage with customers and competitors alike to align product development with industry standards. Your contributions will drive the standardization of KIOXIA’s groundbreaking features, enhancing speed, capacity, and security across various applications.Key Responsibilities:Lead the establishment and implementation of KIOXIA’s standardization strategy across the Enterprise, Client, and Datacenter storage segments.Act as a principal technical contributor representing KIOXIA in standards committees and technical forums.Drive the creation and advancement of technical proposals within relevant standards organizations.Facilitate internal technical alignment among Engineering, Marketing, and Product teams to ensure that standards efforts support product roadmaps and customer needs.Evaluate external technical proposals and guide internal positioning and response strategies.Engage with customers, suppliers, and industry partners to influence standards development and achieve consensus.Oversee standards documentation, proposal tracking, and internal knowledge sharing.Enhance KIOXIA’s visibility and technical leadership through active participation in standards initiatives.Identify emerging standards bodies and technologies where KIOXIA can take a leadership role.Organize and lead regular internal standards review meetings, including setting agendas, tracking decisions, and following up on action items.

archer56 is hiring a Senior Design Assurance and Quality Engineer in San Jose, California. This role centers on maintaining high quality standards throughout engineering projects, supporting the company’s focus on excellence and customer satisfaction. Key Responsibilities Carry out detailed quality assessments for products and processes Develop, implement, and sustain quality assurance procedures Work closely with teams from different functions to ensure projects align with industry standards Take the lead on initiatives that drive continuous improvement and boost product reliability Requirements Background in design assurance and quality engineering Keen attention to detail and a strong commitment to quality Ability to perform well in a fast-moving setting Experience leading quality improvement efforts and collaborating with varied teams

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.

Archer Aviation, based in San Jose, California, develops all-electric vertical takeoff and landing aircraft. The company focuses on advancing sustainable air mobility, designing vehicles that carry four passengers and operate with low noise. Archer values a diverse team and aims to create an inclusive workplace where different perspectives drive better solutions. The company encourages collaboration and respects the unique contributions of every employee. Role Overview The Senior Battery Design Engineer will lead efforts to design high voltage battery pack components for multiple aircraft programs, including both commercial and defense projects. This role covers the full design process, from initial concept through completion. What You Will Do Lead design of high voltage battery pack components across various aircraft programs, from concept to final product. Collaborate with CAE engineers, quality assurance, testing, supply chain, and manufacturing teams to ensure strong design and product quality. Provide hands-on support for prototyping, assembly, and troubleshooting throughout the design cycle. Work with integration and certification teams to meet all FAA certification requirements. Develop innovative battery designs tailored to the demands of aerospace applications.