Signal Integrity Engineer

Archer 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 promote sustainable air mobility, designing, manufacturing, and operating an aircraft that accommodates four passengers while minimizing noise pollution.We aim high and tackle complex challenges, believing that a diverse workforce enriches our insights and propels us towards collective success. Archer is committed to fostering an equitable and inclusive environment that values differences and celebrates each team member.What You’ll Do:As a Battery Controls Integration Engineer at Archer, your primary responsibilities will include the integration of our high-voltage battery controls system onto test platforms, ensuring the verification of Battery Management System (BMS) safety-critical functions. This role is essential for facilitating the use of electric vertical-takeoff-and-landing aircraft in urban air mobility settings. Your contributions will encompass all stages of the product development lifecycle, including development, implementation, validation, and ongoing improvement.Core Responsibilities and Development Focus:Verification and Testing Strategy: Design and implement verification procedures and test plans across various testing environments including Simulation, Software-in-the-Loop (SIL), and Hardware-in-the-Loop (HIL).Integrated Testing Ownership: Lead the testing of the Battery Management System (BMS) controls hardware/software integrated system functionalities on safety-critical components, utilizing HIL, SIL, and high-voltage (HV) integrated labs.Automation and Infrastructure: Update and maintain automated test cases in alignment with BMS functionality development for effective verification and regression testing, particularly in model-based environments.Test System Development: Offer commissioning and maintenance support for the comprehensive testing infrastructure required for HIL testing of BMS controls, algorithms, and software.Process and Infrastructure Improvement: Take responsibility for the automated testing platform, enhancing efficiency, accuracy, and automation level for BMS control system verification. Contribute to continuous improvement of test infrastructure, including writing and debugging test scripts for HV HIL systems.Cross-Functional Collaboration and Integration:...

Join Archer, a pioneering aerospace company headquartered in San Jose, California, where we are dedicated to revolutionizing sustainable air mobility through the development of all-electric vertical takeoff and landing (eVTOL) aircraft. Our innovative designs prioritize minimal noise and environmental impact while enabling efficient transportation for up to four passengers.At Archer, we are committed to tackling complex challenges and fostering a diverse workplace, believing that inclusivity drives greater insights and collective success. We strive to create an equitable environment that values and celebrates the unique contributions of all our team members.Your Role:As a Battery Controls Engineer, you will be instrumental in defining, validating, implementing, and verifying advanced high-voltage battery charging and thermal management algorithms tailored for our Midnight eVTOL aircraft. You will oversee the entire product development life cycle, from initial concept to final certification.Design and enhance cutting-edge control algorithms for high-voltage battery charging and thermal management.Conduct comprehensive validation of control software through SIL (Software-in-the-Loop), MIL (Model-in-the-Loop), HIL (Hardware-in-the-Loop), and aircraft-level integration testing to ensure optimal system reliability under all operating and environmental conditions.Analyze lab, flight, and field data to troubleshoot complex issues, refine algorithms, and enhance charging performance continuously.Collaborate closely with hardware, software, and systems engineering teams to establish requirements for charge control subsystems.

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.

Archer Aviation, an innovative aerospace firm headquartered in San Jose, California, is on a mission to revolutionize air travel with our all-electric vertical takeoff and landing aircraft. Our commitment to sustainable air mobility drives us to design, manufacture, and operate an aircraft capable of carrying four passengers while minimizing noise pollution.We are passionate about addressing complex challenges and believe that a diverse workforce enhances our problem-solving capabilities, leading to superior insights and success. We strive to foster an equitable and inclusive workplace that celebrates the unique contributions of every team member.Key Responsibilities:Conduct verification and validation of safety-critical software components for the aircraft battery management system (BMS) in alignment with DO-178C standards.Develop and document detailed test plans, cases, and procedures based on software requirements.Perform Software-in-the-Loop (SIL) and Hardware-in-the-Loop (HIL) testing to validate battery algorithms and drivers.Identify, document, and manage software defects using automated tracking systems; collaborate with development teams to analyze root causes and validate resolutions.Create and uphold automated test scripts and frameworks (C/C++, Python) to optimize testing efficiency and coverage.Design and implement tests for verifying software fault detection and diagnostic algorithms, including insulation breakdown, short circuits, and sensor failures.Analyze sensor data (cell voltages, pack current) and test outcomes to ensure accurate state estimation and protective function performance.Engage in software audits and reviews to ensure compliance with DO-178C certification requirements.

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.

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.

Archer Aviation Inc. is a pioneering aerospace company headquartered in San Jose, California, dedicated to developing an all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to revolutionize sustainable air mobility, creating a quieter and eco-friendly mode of transportation that can accommodate up to four passengers.At Archer, we strive for excellence and face complex challenges, and we believe that fostering a diverse workplace enhances our creativity and insights, ultimately driving our collective success. We are committed to establishing an equitable and inclusive environment that values our differences and celebrates every team member.What You’ll Do:As a BMS Integration Engineer, you will be responsible for the integration of hardware and software components for Archer's high voltage battery management system (BMS). Your contributions will encompass all stages of the product development lifecycle, including development, implementation, validation, and ongoing enhancements.In this role, you will…Collaborate closely with hardware engineers and software developers to activate new features in the labTransform schematics and datasheets into pseudocode, timing diagrams, and interface specificationsEngage hands-on in the lab to establish equipment and instrumentation as neededDiagnose and resolve cross-functional hardware-software issuesSupport the battery testing team and mechanical teams during critical battery pack evaluations at test locationsCreate automated fault injection tests and fixtures to evaluate safety-critical diagnosticsCompile design feedback to inform improvements for future versions of the BMS hardware

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.

At Archer, we are pioneering the future of aviation with our all-electric vertical takeoff and landing aircraft, designed to enhance sustainable air mobility. Our innovative engineering team is dedicated to creating an aircraft that accommodates four passengers with minimal noise pollution.We believe that tackling complex challenges requires a diverse team, and we are committed to fostering an inclusive workplace that values and celebrates our unique perspectives. Join us in our mission to revolutionize air travel.Key Responsibilities:As an Electrical Analysis Engineer, you will play a critical role in the analysis of circuits within Archer's high voltage battery management system. Your contributions will directly impact the safety and reliability of our innovative aircraft.Conduct thorough circuit schematic analyses, collaborating with safety engineers to identify potential single-point failures.Evaluate the system-level implications of individual component failures within printed circuit board assemblies (PCBAs).Aggregate power consumption data of the BMS PCBAs across various operational modes and correlate findings with laboratory tests.Perform worst-case accuracy analyses on measurement circuits.Utilize circuit simulation tools to model and analyze hardware circuits to support accuracy evaluations.Employ software for automated circuit analysis to facilitate schematic-level Failure Modes and Effects Analyses (FMEAs).Assess the system-level impacts of single-event upsets and latch-ups.Collaborate with reliability engineers to understand electrical operating conditions and determine failure rates.Carry out electrical stress analyses and component derating evaluations for individual components.Work closely with design engineers to ensure BMS hardware meets Archer's stringent safety, accuracy, and reliability standards.

About Archer Archer, based in San Jose, California, designs and builds all-electric vertical takeoff and landing aircraft. The company focuses on sustainable air mobility and aims to transport four passengers while reducing noise pollution. Archer values diversity and strives to create an inclusive workplace where every team member’s perspective contributes to smarter solutions. Role Overview The Thermal Analysis Engineer for Battery Systems will support the design and performance of battery packs and modules for Archer’s aircraft. This position involves simulation, testing, and collaboration across multiple engineering teams to ensure reliable and safe thermal management. Main Responsibilities Run thermal analysis and simulations on battery packs and modules using advanced CAE tools. Develop simulation methods and workflows to improve team productivity. Design and optimize battery thermal management systems, including cold plates and phase change materials, to achieve high performance and safety. Plan and conduct thermal testing to validate and refine analytical models. Work closely with mechanical, electrical, control, and systems engineering teams to integrate thermal solutions and models. Prepare detailed reports and presentations documenting findings, design recommendations, and test results.

Archer Aviation is developing all-electric vertical takeoff and landing (eVTOL) aircraft in San Jose, California. The company’s mission centers on creating sustainable air mobility solutions, with aircraft designed to carry four passengers while minimizing noise for quieter, cleaner transportation. Archer values diversity and inclusion, encouraging every team member’s perspective and fostering equity throughout the workplace. Role overview The Senior Staff Engineer - Battery Cell Stack will lead the design and development of high-voltage battery pack components for both commercial and defense eVTOL aircraft. This position plays a key role in shaping battery technology for multiple aircraft programs. What you will do Oversee the full design process for high-voltage battery pack components across several aircraft platforms. Collaborate with CAE engineers, quality assurance, testing, supply chain, and manufacturing teams to align on project goals. Engage in hands-on prototyping, assembly, and root cause analysis during the design cycle. Work with integration and certification teams to ensure battery systems meet FAA certification standards. Create and refine battery design solutions that fulfill strict aerospace requirements. Establish and promote design standards and best practices for Archer’s battery systems. Mentor junior engineers working on battery design. Develop and maintain the battery hardware technology roadmap for future products and applications.

About Archer Aviation Archer Aviation, based in San Jose, California, is developing all-electric vertical takeoff and landing aircraft designed to transport four passengers with low noise and minimal environmental impact. The company is committed to advancing sustainable air mobility and values a diverse, equitable, and inclusive workplace where every team member can grow professionally. Role Overview The Battery Test and Build Technician will support the design, assembly, and testing of battery systems and related components. This hands-on role involves building prototypes, supporting equipment assembly, and assisting with battery charging operations for ongoing projects. What You Will Do Build battery packs, cell bucks, and components for Battery BMS, including design and testing tasks. Assist with assembling Battery EOL (End of Line) equipment. Support mechanical builds for advanced project testing. Fabricate securing hardware and harnesses for use with testing equipment and assets. Construct test fixtures for cells, bucks, and packs. Perform small-scale buck and prototype builds. Assist with battery pack charging operations. Location San Jose, California, United States

About Hark Hark is at the forefront of artificial intelligence, developing innovative, personalized intelligence systems that are proactive, multimodal, and capable of engaging with the world via speech, text, vision, and persistent memory. We are merging this intelligence with cutting-edge hardware to forge a universal interface that connects humans and machines. Unlike conventional AI that operates through outdated chat boxes and devices, Hark is pioneering the future with agentic systems that engage naturally with individuals and their environments. Our mission is to create multimodal models and next-generation AI hardware, meticulously designed as an integrated interface for a new era of intelligent systems. About the Role As an Integration Engineer, you will take ownership of the integrations layer that empowers Hark's AI agent to be genuinely effective in real-world applications. Your responsibility will be to connect our AI to the tools, services, and data sources that users rely on daily. Your work will involve designing and implementing the protocols, connectors, and execution primitives that enable Hark to perform real actions, such as managing emails, calendars, and third-party API interactions. The true potential of our agentic system hinges on its ability to connect and act. This role offers significant ownership within a compact team where you will collaborate directly with platform engineers and model researchers. The integrations you develop will set the parameters for Hark's capabilities. Responsibilities Design and construct the integration layer connecting Hark's agent to third-party services, including email, calendars, productivity tools, communication platforms, and developer tools. Oversee the complete lifecycle of integrations: from authentication flows to API clients, schema normalization, action execution, and robust error handling. Ensure reliability beyond just the happy path. Establish and implement tool and action protocols that allow the agent to engage with external systems in a secure and consistent manner. Facilitate the seamless addition of new integrations. Collaborate closely with platform engineers to ensure that connectors are integrated smoothly into the agent runtime, ensuring fast, observable, and appropriately sandboxed tool execution. Work in partnership with model researchers to define tool schemas and action semantics that models can reliably interpret, as the quality of the interface directly influences model behavior. Instrument integrations for reliability and accuracy, tracking failures, surfacing regressions, and ensuring rapid feedback loops with the team. Identify high-leverage integration opportunities to maximize impact.

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).

AppZen stands at the forefront of autonomous spend-to-pay software, leveraging patented artificial intelligence to meticulously process data from thousands of sources. Our innovative solutions empower organizations to gain comprehensive insights into enterprise spending, facilitating more informed business decisions. By integrating seamlessly with existing accounts payable, expense, and card workflows, AppZen transforms data into actionable insights, ensuring rapid processing and minimizing instances of fraud and unnecessary expenditures. Trusted by global enterprises, including one-third of the Fortune 500, our invoice, expense, and card transaction solutions replace manual finance processes, enhancing the speed and agility of businesses worldwide. Discover more at www.appzen.com.As an Integration Engineer at AppZen, you will play a pivotal role in designing, implementing, and maintaining integrations between our platform and client enterprise systems. This hands-on technical position demands a focus on delivering robust and scalable integration solutions. You will collaborate closely with customer technical teams, craft code, configure iPaaS platforms, troubleshoot production issues, and ensure seamless data flow across systems. If you thrive on solving intricate integration challenges and take pride in the direct impact of your work on customer success, this is the ideal role for you.

About EtchedAt Etched, we're pioneering the world's first AI inference system uniquely designed for transformers, offering over 10 times the performance with significantly reduced costs and latency compared to B200 systems. Our custom ASICs empower the development of groundbreaking products, including real-time video generation models and highly sophisticated deep reasoning agents. With substantial backing from top-tier investors and a team of exceptional engineers, we are revolutionizing the infrastructure layer essential for today's rapidly evolving industry.Job SummaryWe are on the lookout for a talented Rack Level Integration Engineer to take a pivotal role in the qualification and integration of various components within our data center racks. In this position, you will manage the rack-level integration for our Sohu system product, which includes top-of-rack (ToR) switches, advanced water cooling systems, Coolant Distribution Units (CDUs), heat exchangers, and rack management functionalities. Your responsibilities will include hands-on lab work for racking and stacking, setting up high-touch rack configurations, and ensuring optimal performance, reliability, and readiness for deployment.Key ResponsibilitiesIntegrate and configure all components within a data center rack, including servers, storage systems, networking equipment, power solutions, and cooling systems.Configure and integrate top-of-rack switches for effective rack operation.Manage and integrate high-power water cooling systems, including CDUs and heat exchangers.Set up, test, and qualify comprehensive rack solutions to ensure they meet performance, reliability, and efficiency standards.Integrate and configure smart PDUs to facilitate efficient power distribution and ensure compatibility with rack-level power management.Maintain a thorough understanding of rack-level management functions, including monitoring, control, and automation of components.Perform hands-on lab racking and stacking, including the assembly and setup of intricate rack configurations.Create and sustain detailed documentation for rack-level integrations, covering specifications, installation procedures, test results, and issue tracking.Collaborate closely with cross-functional teams including mechanical engineers, systems engineers, vendors, and integrators to ensure seamless operation at the rack level.Regularly engage with contract manufacturers in Taiwan, both remotely and on-site.

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 Archer Aviation Archer Aviation designs and builds all-electric vertical takeoff and landing (eVTOL) aircraft in San Jose, California. The company focuses on sustainable air mobility, aiming to move four passengers quietly and with minimal environmental impact. The team values ambitious problem-solving and believes that a diverse, inclusive workplace is essential for innovation and success. Every team member’s perspective contributes to the company’s progress. Role Overview: Integration and Verification Engineer, Turbogenerator This engineer leads the verification of integrated hybrid powertrain systems, with a focus on the turboshaft/turbogenerator powertrain and its related components. Main Responsibilities Direct the verification process for integrated hybrid powertrain systems. Apply systems engineering methods to validate the turboshaft/turbogenerator powertrain, including batteries, motors, and complex mechanical parts. Manage verification activities during both bench testing and aircraft integration, including the start of flight test campaigns. Offer technical input in design reviews, especially regarding testing and operational needs for the turbogenerator. Work closely with suppliers, engineers, and other stakeholders to keep verification activities safe and on schedule. Monitor third-party stakeholders to ensure they meet deadlines and uphold safety standards.

Axiado is looking for a System Engineer focused on Platform Integration in San Jose. This position centers on designing and implementing integrated systems that support the company's technology solutions. Role overview The System Engineer will work closely with teams across multiple functions to ensure that platforms connect smoothly and perform reliably. The work involves both planning and hands-on implementation of integration strategies. What you will do Design integrated systems that support Axiado's technology products Implement solutions to connect platforms effectively Collaborate with other teams to maintain seamless integration and system performance Collaboration This role requires ongoing communication with engineering, product, and other departments to deliver integrated solutions that meet company objectives.