Battery Test Engineer - Electrical

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.

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

Astera Labs designs advanced connectivity solutions for AI infrastructure, working closely with hyperscale partners and technology collaborators. The company’s Intelligent Connectivity Platform combines semiconductor technologies such as CXL®, Ethernet, NVLink, PCIe®, and UALink™, all managed by the COSMOS software suite. This platform enables flexible, scalable systems for demanding data center environments. Astera Labs also provides custom solutions for organizations with specialized infrastructure needs. More information is available at www.asteralabs.com. Role overview The Optical Connectivity Solutions Engineer focuses on designing and evaluating high-speed optical transceivers. This work directly supports the development of new communication technologies that drive AI infrastructure forward. Key responsibilities Design high-speed optical transceivers for advanced connectivity applications Evaluate performance and reliability of optical components Support development efforts for next-generation communication technologies Location This position is based in San Jose, CA.

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.

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 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.

Archer, an innovative aerospace company located in San Jose, California, is pioneering the development of an all-electric vertical takeoff and landing aircraft. Our mission is to enhance sustainable air mobility, designing and manufacturing aircraft capable of carrying four passengers with minimal noise pollution.We set ambitious goals and tackle complex challenges, believing that a diverse workplace fosters smarter solutions and deeper insights, driving our collective success. We are committed to creating an equitable and inclusive environment that values our differences and supports all team members.What You’ll DoLead and execute comprehensive abuse testing for cells, modules, and battery packs, focusing on Thermal Runaway, Short Circuit, Over-Temperature, Overcharge, and Overdischarge scenarios.Conduct thorough data analysis and compile detailed reports.Design and develop sub-scale and full-scale test rigs for Safety/Abuse tests, including PCBA/hardware and software integration.Create and deploy custom thermal abuse test equipment and controllers.Develop bespoke test equipment and automation software to facilitate cross-functional battery R&D testing.Utilize NX CAD software for the mechanical design of test rigs.Enhance test development using LabVIEW, Python, and other relevant tools.Assist in the assembly of small-scale buck and prototype builds.Provide support for troubleshooting and preventative maintenance of battery testing equipment and setups.Contribute to failure review processes.Work alongside the battery engineering team on cell, buck, and pack teardown procedures.Innovate and implement new test procedures, executing them effectively.Generate reports for submission to the FAA.

Join our innovative team at Collabera as a Software Test Engineer. In this pivotal role, you will be essential in ensuring the quality and performance of our software products. You will collaborate with developers and product managers to identify bugs, suggest improvements, and contribute to the overall user experience.

Archer Aviation is an innovative aerospace company headquartered in San Jose, California, dedicated to revolutionizing air travel with our all-electric vertical takeoff and landing aircraft. Our mission is to enhance sustainable air mobility, enabling efficient travel while minimizing environmental impact and noise levels.At Archer, we aim high, tackling complex challenges with a belief that a diverse workforce fosters smarter solutions and drives insights that lead to collective success. We are committed to creating an inclusive and equitable workplace that values every team member's uniqueness.What You’ll Do:Assist in the development and preparation of FAA Certification Ground and Flight test plans.Contribute to the creation of test cards.Collaborate with engineers, maintainers, technicians, and program management to ensure safe and efficient test operations.Support the generation of Company and Certification reports.Prepare material for test readiness reviews.Serve as a flight test engineer and/or test conductor during test events both on the aircraft and in the control room.Engage in flight briefs and debriefs for test events.Take part in test setup activities on the flight line.Report and communicate test results to the Flight Test and Engineering teams.Participate in all aspects of the Flight Test Safety Risk Management process.Prepare test operating limitations and advisories in collaboration with relevant engineering disciplines.Attend safety review board (SRB) meetings.

Archer Aviation is a pioneering aerospace firm headquartered in San Jose, California, dedicated to developing an all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to enhance sustainable air mobility, designing and manufacturing an aircraft that can transport four passengers with minimal noise and environmental impact.We aim high and tackle challenging problems, believing that a diverse workforce fosters innovation, insights, and collective success. Our commitment is to create an equitable and inclusive workplace that values our unique perspectives and supports every member of our team.Key Responsibilities:Conduct electrical and environmental testing of prototype and certified batteries for eVTOL aircraft.Collaborate with cross-functional teams to create and implement test plans for flight-critical hardware.Execute acceptance testing on battery modules, packs, and charge port assemblies.Design sub-scale test rigs for mechanical and environmental testing, involving PCBA/hardware and software development.Develop and deploy custom test equipment and controllers.Create bespoke test equipment and automation software to facilitate cross-functional battery R&D testing.Perform mechanical design of test rigs using NX CAD software.Utilize LabVIEW, Python, and other test development tools for testing purposes.Analyze test data and collaborate with engineering teams to share insights.Develop automated test equipment as required.Innovate test procedures and oversee testing execution.Generate reports for FAA submission.

About EtchedEtched is revolutionizing the AI landscape with the world’s first AI inference system specifically designed for transformers. Our technology offers more than 10x improvement in performance while significantly reducing costs and latency compared to traditional systems. With our cutting-edge ASICs, we enable innovations that are unfeasible with GPUs, such as real-time video generation models and advanced reasoning agents. Supported by substantial investments from leading venture capitalists and staffed with top-tier engineers, we are reshaping the core infrastructure of the fastest-growing industry in history.Job SummaryJoin our Manufacturing Test Engineering team as a Failure Analysis Test Engineer, where you will take charge of electrical debugging and failure analysis for our AI systems. You will play a crucial role in ensuring smooth product introductions from New Product Introduction (NPI) through to high-volume production. Your collaboration with hardware, ASIC, diagnostics, test, and reliability engineering teams will be vital in enhancing diagnosability, manufacturing predictability, yield processes, material improvements, and overall product reliability.Your primary focus will be on enhancing the diagnosability and repair efficiency of PCBA and L10 Servers, striving to uphold the highest quality and reliability standards for our AI hardware.Key ResponsibilitiesDiagnose and repair electronic assemblies (PCBA) down to the component level.Work collaboratively with Contract Manufacturers (CMs) and ODMs to address capability gaps, enhance yield, and qualify new components.Set up and operate various test equipment including oscilloscopes, spectrum analyzers, network analyzers, and digital multimeters (DMMs).Maintain detailed records of failure data, repair actions, and updates to debug procedures.Collaborate with design and production teams to troubleshoot recurring issues and enhance product yield.Partner with Component Engineering, Supply Chain, and Hardware teams to guide component selection and minimize manufacturing risks early in the design phase.Conduct board bring-up and debugging, utilizing Design of Experiments (DOE) and hands-on lab work.Review and contribute to Process FMEA and Design FMEA, providing valuable diagnostics input.

Join Etched as a Design For Test (DFT) Engineer, where you will play a crucial role in enhancing product reliability and testability. You will collaborate with cross-functional teams to develop innovative testing strategies and ensure the highest quality standards are met throughout the design lifecycle.

Archer Aviation Inc. is a pioneering aerospace company located in San Jose, California, dedicated to developing an innovative all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to revolutionize sustainable air mobility, engineering aircraft capable of transporting four passengers while maintaining an eco-friendly, low-noise operation.At Archer, we set ambitious goals and tackle complex challenges, believing that a diverse workforce enhances creativity, drives superior insights, and ultimately leads us to success. We are committed to fostering an inclusive workplace that values and celebrates our differences, ensuring all team members feel supported.About the Role:In this role, you will lead the enhancement of our High Voltage Electric Propulsion System production, which is integral to our eVTOL aircraft. This position involves overseeing one of the most technically advanced and automated manufacturing systems within our facility.Your Responsibilities:Direct the development of End-of-Line (EOL) and in-process testing protocols for High Voltage batteries and electric motors, focusing on performance, safety, and system integration.Architect and implement manufacturing test strategies, including hipot, insulation resistance, winding verification, electromagnetic performance, and Energy Storage Systems (ESS).Specify, validate, and commission production test equipment, ensuring successful installation, Factory Acceptance Testing (FAT), and production readiness.Program, maintain, and optimize Automated Test Equipment (ATE), including test sequences, pass/fail logic, and data collection systems.

Archer Aviation is a pioneering aerospace company located in San Jose, California, dedicated to developing an innovative all-electric vertical takeoff and landing aircraft. Our mission is to enhance the advantages of sustainable air mobility by designing, manufacturing, and operating an electric aircraft that accommodates four passengers while minimizing noise pollution.We are ambitious in our goals and face complex challenges, believing that a diverse workforce fosters intelligence, drives insights, and ultimately leads us all to success. We are committed to creating an equitable and inclusive workplace that values our differences and supports every team member.Key Responsibilities:Conduct testing on motor and drive units using specialized dynamometer setups.Configure equipment and devices for specialized tests with proficiency in:Analog I/ODigital I/OCAN systemsLow and High voltage systemsDiagnose and troubleshoot test setups across mechanical, electrical, and software domains.Collaborate with design engineering to create custom test configurations.Design and fabricate basic lab fixtures and tools.Acquire, install, organize, and maintain testing equipment.Ensure a clean, safe, and functional lab and workshop environment.Perform regular maintenance on testing equipment.Assist engineering teams with prototype development, proof of concept studies, and process validation.Effectively communicate with cross-functional teams to achieve project milestones.

Archer Aviation is an innovative aerospace company located in San Jose, California, dedicated to creating an all-electric vertical takeoff and landing aircraft. Our mission is to accelerate the advantages of sustainable air mobility. We are designing, manufacturing, and operating a state-of-the-art all-electric aircraft capable of transporting four passengers while minimizing noise pollution.We are committed to tackling challenging problems and believe that a diverse workforce enhances our intelligence, stimulates better insights, and ultimately leads to collective success. Archer fosters an equitable and inclusive environment that appreciates our differences while supporting and celebrating every team member.Key Responsibilities:Lead hardware and software integration as well as development tests for high-performance aerospace power electronics (DC-DC, DC-AC, AC-DC) products.Specify, design, and execute electrical testing of product modules and boards utilized in airborne power conversion and distribution systems.Develop clear test plans and procedures, execute test cases, and produce test reports for board/module bring-up, design verification, and system integration. Additionally, support other testing activities, including end-of-line, environmental/electrical stress, and safety-of-flight tests.Oversee tester design from conception through production, collaborating with cross-functional teams. Maintain end-to-end ownership of tester hardware to characterize and validate the features, functions, and performance of complex high-voltage converters—covering specification, design, build, manufacturing, and operation.Create development test cases for modules and boards.Design test stations, addressing both hardware and software requirements.Manage test station build, bring-up, troubleshooting, operation, and maintenance.Consolidate, visualize, review, and analyze test station data.Perform failure analysis on modules/boards to identify root causes and lead cross-functional teams in developing solutions.Support flight test data review and analysis for airborne power electronics products.Drive continuous design and performance enhancements for power electronics products, providing constructive and precise feedback to the teams.

Join our innovative team at antora as a Senior R&D Test Engineer. In this role, you will be at the forefront of developing cutting-edge technologies and solutions. You will collaborate with cross-functional teams to design, execute, and analyze tests for new products, ensuring they meet the highest standards of quality and performance. This position offers an exciting opportunity for growth and the chance to make a significant impact in the tech industry.

Join our dynamic team as an Assistant Manager - Optical in San Jose, where you will play a crucial role in providing exceptional customer service and managing optical operations. As an Assistant Manager, you will support the store manager in overseeing daily activities, ensuring compliance with company policies, and leading a team of dedicated associates.You will have the opportunity to enhance the customer experience by assisting with product selection, managing inventory, and creating a friendly and welcoming environment.

Archer Aviation Inc., located in San Jose, California, is pioneering the future of sustainable air travel by developing an innovative all-electric vertical takeoff and landing aircraft. Our mission is to revolutionize air mobility while minimizing environmental impact, and we are committed to creating an aircraft that can transport four passengers with near-silent operation.We believe that ambitious goals require diverse perspectives. Our inclusive workplace fosters creativity and collaboration, allowing us to tackle complex challenges effectively. We celebrate our differences and strive to build an equitable environment for all team members.Responsibilities:Collaborate closely with team leads, suppliers, and engineers across design, stress, and materials & processes to develop airframe structures throughout the product development lifecycle.Design, develop, and execute testing protocols for both composite and metallic structures.Create test fixtures and setups utilizing CAD software, specifically NX.Conduct structural analysis of airframe components using established handbook methodologies and Finite Element Analysis (FEA).Correlate test findings with predictive models to ensure accuracy and reliability.Prepare comprehensive technical documentation, including analysis reports, test plans, and results documentation.

We are seeking a skilled Datacom Test Automation Networking Engineer to join our dynamic team in San Jose, CA.The ideal candidate will possess 7-10 years of robust experience in Networking, Datacom, and IP domains, with a proven track record working on routers, switches, datacenters, or SDN/NFV in roles such as Dev-tester, System Tester, or Software Developer Tester (SDET).This role requires hands-on experience with L2 protocols including Ethernet, VLAN, xSTP, and others, as well as L2.5/L3 protocols such as RIP, OSPF, and BGP.You should have a strong background with Cisco, Juniper, Ericsson, Nokia-Alcatel, Brocade, or similar Routing/SDN platforms and demonstrate expertise in testing these devices.Critical to this role is your proficiency in test automation using Python, with strong coding skills for both test scripting and functionality development.Familiarity with developing open-source automation frameworks like ROBOT, Pybot, and Pycharm is essential, alongside hands-on experience with tools like Spirent, IXIA, and iPerf.As part of your responsibilities, you will analyze designs, write test scripts, and execute comprehensive testing plans, while effectively debugging and providing root cause analysis for network elements.A customer-focused approach and the ability to design detailed test plans and cases will be vital for success in this role, along with strong verbal and written communication skills.