Software Test Engineer

About ZscalerZscaler stands at the forefront of zero trust security, recognized globally as a leader in safeguarding digital environments. Major enterprises, critical infrastructure entities, and government organizations trust Zscaler to protect users, branches, applications, data, and devices while driving digital transformation. Our extensive network of over 160 data centers worldwide powers the Zscaler Zero Trust Exchange platform, which employs advanced AI to thwart billions of cyber threats and policy violations daily—unlocking productivity and simplifying operations for modern businesses.At Zscaler, the impact of your contributions is valued more than your title. We cultivate an environment of transparency and promote constructive, candid discussions to accelerate the evolution of ideas. Our high-performing teams are committed to delivering impactful results swiftly and with excellence. We foster a culture focused on customer obsession, collaboration, ownership, and accountability.Embracing an “AI Forward, People First” philosophy, we empower our team members to reach their full potential. If you are motivated by purpose, enjoy tackling complex challenges, and aspire to create a positive global impact, we welcome you to join Zscaler and help shape the future of cybersecurity. RoleWe are seeking a Senior Software Engineer to join our Shared Platform Services team. This hybrid position is based in San Jose, CA, reporting directly to the Senior Manager of Software Engineering QA. In this role, you will be pivotal in leading functional, system, and automation testing for Zscaler's innovative features while enhancing our automation infrastructure to improve quality and operational efficiency.

At Archer Aviation, headquartered in San Jose, California, we are pioneering the future of air mobility with our innovative all-electric vertical takeoff and landing aircraft. Our commitment to sustainable transportation is reflected in our design, which prioritizes minimal noise while accommodating four passengers.We are driven by ambitious goals and complex challenges, and we recognize that a diverse workforce enhances our problem-solving capabilities and overall success. Our mission is to foster an equitable and inclusive workplace that celebrates the uniqueness of every team member.Key Responsibilities:Lead the architecture and management of Archer’s lab integration environments to support validation and verification activities, including quality assessments, human factors evaluations, and test pilot training.Collaborate effectively across various internal teams and suppliers to integrate, instrument, and maintain simulation models within real-time hardware-in-the-loop environments.Oversee the comprehensive configuration of simulation environments (e.g., SIL, HIL, CeRT, Iron Bird), focusing on data analysis and correlating simulation results with flight test data.Design and optimize simulation pipelines incorporating CI/CD practices for automated deployment, execution, and monitoring.Integrate third-party software and hardware systems into unified simulation architectures.Establish technical standards, mentor junior engineers, and cultivate a collaborative, high-performance engineering culture.Direct the design and creation of graphical user interfaces for controlling real-time simulation environments.Lead task breakdown, technical planning, and troubleshooting of intricate issues across real-time and distributed systems.Shape tool architecture to enhance lab configuration and automation.Qualifications:Minimum of 9 years of experience in simulation software development and systems integration.Bachelor's degree or higher in Aerospace, Software, Electrical Engineering, Computer Science, or a related discipline.Proven experience as a technical leader within an engineering team, providing effective guidance in project planning and execution.Advanced skills in C/C++ and Python programming languages.Extensive expertise in MATLAB/Simulink environments.Significant experience in developing real-time HIL testing infrastructures.

Join our dynamic team at StemXpert1 as an Integration Test Engineer specializing in Python. In this role, you will be pivotal in ensuring the robustness and reliability of our software products through rigorous testing methodologies. Collaborate with cross-functional teams to define test strategies, develop automated test scripts, and provide actionable insights to enhance product quality.

Astera Labs Inc., listed on NASDAQ as ALAB, creates connectivity solutions tailored for AI infrastructure. The company partners with hyperscalers and other technology leaders to advance modern AI systems. Its Intelligent Connectivity Platform integrates CXL®, Ethernet, NVLink, PCIe®, and UALink™ technologies, all supported by the COSMOS software suite. Learn more at www.asteralabs.com. Role overview The ATE Test Engineer Internship for 2026 is located in San Jose, CA. This role is intended for students or early-career engineers who have a strong foundation in software that interacts with hardware. Interns will focus on developing and executing production tests for System on Chip (SoC) products, working closely with Astera Labs’ engineering team. What you will do Work with experienced engineers to design and implement production tests for SoC products Contribute to testing strategies and draft parts of Automated Test Equipment (ATE) programs Coordinate with manufacturing partners on test execution Participate in deploying and running ATE solutions Requirements Experience with programming languages such as C++ and Python Understanding of computer architecture Interest in software solutions for hardware operations Strong communication and teamwork skills Proactive approach to problem-solving Growth path This internship provides exposure to the entire product lifecycle, from design through high-volume production, and can serve as a stepping stone to a full-time ATE Test Engineer position.

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.

About the RoleBonsai Robotics is on the lookout for a talented Senior Robotics Software Engineer specializing in simulation. In this key role, you will be responsible for developing and managing our sophisticated simulation infrastructure. The successful candidate will design high-fidelity virtual environments that facilitate quick development, testing, and validation of our autonomy stack, thereby minimizing reliance on physical field testing and speeding up iterations across perception, planning, and control systems.What You'll DoDevelop and maintain simulation environments that accurately replicate real-world conditions, including orchards, row crops, uneven terrain, and varying lighting and weather.Create SIL/HIL testing frameworks that ensure comprehensive testing of the full autonomy stack.Establish and sustain high-fidelity sensor models (cameras, GPS/RTK, IMUs, LiDAR) that are calibrated against actual hardware.Develop tools for automated scenario generation, regression testing, and CI integration.Work collaboratively with perception, controls, and platform teams to define simulation needs and bridge the sim-to-real gap.Model vehicle dynamics and terrain interactions for a variety of robotic form factors.

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.

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.

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

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 Archer Aviation Archer Aviation, based in San Jose, California, is developing an all-electric vertical takeoff and landing (eVTOL) aircraft designed for sustainable air mobility. The company aims to create a quiet, environmentally conscious aircraft that seats four passengers. Archer values ambitious goals, technical challenges, and a workplace that welcomes diverse perspectives and backgrounds. Role Overview: Battery Test Engineer - Electrical The Battery Test Engineer - Electrical will focus on the testing and validation of battery and battery management system (BMS) components for Archer's eVTOL aircraft. This role involves hands-on work with prototype and certified hardware, as well as collaboration with multiple engineering teams. Main Responsibilities Conduct systems and integration testing for prototype and certified battery and BMS components. Work with teams across BMS, Controls, Engines, Flight, Integration, and Systems to develop and execute testing plans for flight hardware. Assist with regression testing activities. Support testing related to electromagnetic compatibility (EMC), short circuit, and electrical design infrastructure. Develop and test mission profiles for battery systems. Help build digital testing infrastructure for data storage and analysis. Analyze test data and collaborate with engineering teams to drive improvements. Design and implement automated test equipment as needed. Support electrical infrastructure design for Production and Reliability labs. Prepare technical reports for FAA regulatory submissions.

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.

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.