Platform Engineering Intern - Mechanical & Thermal

About EtchedEtched is pioneering the world’s first AI inference system specifically designed for transformers, achieving over 10 times the performance with significantly reduced costs and latency compared to traditional models. Our cutting-edge ASIC technology enables the creation of products that are unachievable with GPUs, including real-time video generation models and advanced reasoning agents. With substantial backing from top-tier investors and a team of exceptional engineers, Etched is transforming the infrastructure landscape for the rapidly evolving AI industry.Job SummaryAs a mechanical/thermal engineering intern, you will become an integral part of our mechanical and thermal engineering team, focusing on New Product Introduction (NPI) prototyping, manufacturing fixture development, liquid cooling technologies, and rack-level system design. Our Platform Team is responsible for developing a comprehensive full-stack system that supports Etched Silicon from PCB to Rack. We are looking for interns eager to engage in all facets of mechanical and electrical engineering to help shape the future of high-power ASIC systems.Ideal Candidates Will Have:Progress towards a Bachelor’s or Master’s degree in Mechanical Engineering, Computer Engineering, or a related field.Hands-on experience in building mechanical systems, circuit boards, or similar projects.Familiarity with the board design cycle, high-speed interconnects, power distribution, and system integration.We encourage applications from candidates who may not meet every single qualification.Internship Program Details:12-week paid internship (June - August 2026)Generous housing support for interns relocating to San JoseDaily lunch and dinner provided at our officePosition based in our San Jose, CA officeDirect mentorship from industry leaders and top-tier engineersOpportunity to contribute to addressing some of the most critical challenges of our timeFor inquiries, please contact internships@etched.com

About Archer Aviation Archer Aviation, based in San Jose, California, develops all-electric vertical takeoff and landing (eVTOL) aircraft. The company focuses on sustainable air mobility, designing aircraft that can carry four passengers while minimizing noise. Archer values creative problem-solving and believes that a diverse, inclusive workplace leads to stronger results and a more supportive team environment. Role Overview The Thermal Systems Design Engineer for Hybrid Powertrain will lead the design and development of advanced thermal systems for Archer’s hybrid aircraft. This role involves hands-on engineering, collaboration across disciplines, and responsibility for the system’s full lifecycle, from concept to implementation. Key Responsibilities Design, model, and implement innovative thermal systems for hybrid aircraft. Select technologies and materials suited for complex thermal management challenges. Ensure thermal systems are lightweight, efficient, and cost-effective. Validate performance through rigorous testing and system definition. Work closely with stakeholders to deliver a comprehensive thermal solution. Oversee the thermal system’s lifecycle, coordinating with manufacturing and testing teams. Present design concepts and project updates to stakeholders. Collaborate with supply chain, quality assurance, manufacturing, and stress/FEA engineers.

Archer Aviation develops all-electric vertical takeoff and landing (eVTOL) aircraft in San Jose, California. The company designs and builds vehicles that carry up to four passengers, with a focus on quiet operation and reduced environmental impact. High standards and a willingness to tackle complex challenges shape Archer’s approach. The team values diversity and inclusion, recognizing that a range of backgrounds and perspectives strengthens creativity and results. Every team member’s contribution is welcomed and respected.

Antora is on a mission to revolutionize industrial energy solutions by designing and implementing cutting-edge thermal batteries that provide reliable, low-cost energy for industrial operations. We are looking for a dynamic and driven Senior Mechanical/Process Engineer to join our San Jose, California team. In this pivotal role, you will be instrumental in optimizing our balance of plant (BOP) systems, focusing on cost efficiency and performance enhancements. Your expertise will be integral in developing and refining cost models based on comprehensive technical and commercial data, guiding the design and evolution of high-performance plant processes and systems. You will also take charge of scoping, defining, and designing BOP systems for our commercial thermal energy storage projects. As a key player in our rapidly growing cross-functional organization, your contributions will directly support the deployment and scaling of innovative long-duration energy storage technologies.

Archer Aviation is an innovative aerospace firm located in San Jose, California, focused on developing an all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to enhance sustainable air mobility, creating an aircraft that comfortably accommodates four passengers while minimizing noise.At Archer, we aim high and tackle challenging problems. We believe that a diverse workforce fosters smarter solutions, drives better insights, and ultimately leads us all to success. We are committed to creating an equitable and inclusive workplace that celebrates our differences and supports every team member.

About EtchedEtched is at the forefront of innovation, developing the world's first AI inference system specifically designed for transformers. Our technology achieves over 10 times the performance of traditional systems while significantly reducing cost and latency compared to a B200. With Etched ASICs, we enable the creation of revolutionary products, such as real-time video generation models and advanced reasoning agents that can handle complex tasks. Supported by substantial investments from leading investors, and driven by a team of top engineers, we are reshaping the infrastructure for one of the fastest-growing industries.Job SummaryWe are looking for a highly skilled Senior Thermal Engineer specializing in Liquid Cooling Systems to enhance our team and spearhead our thermal management initiatives for high-performance systems. In this pivotal role, you will develop and implement cutting-edge thermal management solutions for our advanced data center products. Your proficiency in water cooling, thermal simulations, and cooling system design will be vital in ensuring peak thermal performance and reliability. You will engage with various water cooling components, including internal manifolds, quick disconnects, CDU (Coolant Distribution Units), heat exchangers, and sophisticated thermal interface materials.Key ResponsibilitiesLead the design and optimization of advanced thermal management systems for high-performance data center products, with an emphasis on innovative water cooling solutions.Develop and execute water cooling strategies, including internal manifolds, quick disconnects, CDUs, and heat exchangers, to ensure effective cooling and thermal management for high-power processors and other critical components.Design and oversee direct-to-processor water cooling systems to efficiently dissipate heat and maintain optimal operating temperatures.Perform comprehensive thermal simulations to predict and analyze thermal performance, utilizing results to inform system design and optimization.Select and assess thermal interface materials (TIMs) for various cooling solutions, optimizing their performance to enhance thermal conductivity and heat dissipation.Investigate and implement innovative thermal cooling concepts, such as phase change cooling and other advanced techniques.Supervise the testing and validation of thermal management systems to ensure compliance with performance standards.

Etched develops AI inference systems optimized for transformer architectures. The company’s ASIC technology is designed to deliver significantly higher performance and lower latency than traditional solutions, supporting applications like real-time video generation and parallel reasoning agents. Etched is backed by major venture capital firms and led by an experienced engineering team. Role overview The Advanced IC Packaging Team in San Jose is seeking a Thermo-Mechanical & CFD Simulation Engineering Intern. This internship centers on Chip-on-Wafer-on-Substrate (CoWoS) package development for high-performance computing systems. The role involves hands-on simulation work using ANSYS Mechanical APDL and ANSYS FLUENT. What you will do Create Finite Element Analysis (FEA) models for CoWoS integrated circuit packages in ANSYS Mechanical APDL. Conduct thermo-mechanical stress and strain analyses, including thermal cycling simulations. Evaluate package warpage, solder joint reliability, and interconnect stress. Develop Computational Fluid Dynamics (CFD) models in ANSYS FLUENT to simulate solder reflow. Collaborate with design engineering teams throughout package development.

Archer56 offers an internship in San Jose, California, focused on landing gear engineering. This position supports the design and development of landing gear systems for new aircraft. Interns join a team of experienced engineers and contribute to multiple stages of the engineering process. Role overview This internship centers on practical aerospace engineering work. Interns participate in both design and technical development, gaining exposure to real-world projects in the aviation field. What you will do Assist with the conceptual design of landing gear systems Support activities related to development, testing, and validation Work on hands-on aerospace engineering projects Collaborate with the engineering team on technical assignments

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.

Are you a detail-oriented Mechanical Engineer with a passion for optimizing designs for manufacturability? Join our dynamic team at Etched, where you will play a key role in enhancing our product development process. In this position, you will collaborate with cross-functional teams to ensure our designs meet manufacturability standards, ultimately driving efficiency and quality in our operations.

Archer, headquartered in San Jose, California, develops all-electric vertical takeoff and landing aircraft designed for sustainable air mobility. The company’s aircraft are built to carry four passengers and operate with minimal noise. Archer encourages ambitious problem-solving and values a diverse, inclusive workplace where every team member is supported. Role overview The Senior Platform Engineer joins the platform engineering group and plays a key role in accelerating product development and streamlining operations. This position focuses on integrating development, infrastructure, and AI/ML projects. Major responsibilities involve automation, creating self-service infrastructure, and improving workflow efficiency. What you will do Integrate development, infrastructure, and AI/ML initiatives to support product and operational goals Automate processes and build tools for self-service infrastructure Identify and optimize workflows to increase efficiency across teams Requirements Extensive engineering experience, especially in platform or infrastructure roles Strong interest in supporting colleagues and solving complex, cross-disciplinary challenges

Company Overview:TENEX is a pioneering provider of Managed Detection and Response (MDR) solutions, leveraging AI and automation to offer scalable cybersecurity services. Our mission is to empower organizations by enhancing their cybersecurity defenses through cutting-edge threat detection and rapid incident response. Our team consists of seasoned professionals with extensive expertise in cybersecurity, automation, and AI-driven technologies. Supported by top-tier investors, we are experiencing rapid growth and are on the lookout for exceptional talent to help us transform the MDR landscape.As the Director of Platform Engineering at TENEX, you will play a pivotal role in shaping the technical vision, architecture, and implementation strategy for our high-performance cybersecurity platform. You will be responsible for ensuring the scalability, reliability, security, and operational excellence of the infrastructure that supports our AI-driven MDR services, while leading the teams that design and maintain our core systems, data pipelines, and engineering standards.At TENEX, we prioritize our culture, which is built on collaboration and community. Learn more about our values and how we embody them daily by visiting our culture deck at culture.tenex.ai.

About EtchedEtched is pioneering the development of the world's first AI inference system specifically designed for transformers, achieving over 10x higher performance along with significantly reduced costs and latency compared to traditional solutions like B200. Our cutting-edge ASIC technology empowers the creation of products that were previously unfeasible with GPUs, enabling real-time video generation models and highly advanced deep reasoning agents. Supported by substantial investments from top-tier investors and staffed by leading engineers in the industry, Etched is at the forefront of revolutionizing the infrastructure layer for the fastest-growing sector in history.Job OverviewWe are on the lookout for a skilled and enthusiastic Platform Validation Engineer to join our team. In this role, you will focus on validating the functionality of system hardware and printed circuit boards (PCBs), ensuring optimal power and signal integrity across all interfaces. Your responsibilities will include collecting and analyzing lab data to verify hardware performance, supporting post-silicon characterization, and guaranteeing reliable operation across multiple subsystems, such as PCIe and I2C.Key ResponsibilitiesConduct thorough system hardware and PCB functional verifications to ensure all features align with design specifications, including validation of power and signal integrity margins.Gather and analyze lab data to confirm power delivery, signal integrity, and the overall robustness of the system.Assist in post-silicon validation by identifying critical performance metrics and performing PVT, power, and thermal characterizations.Assess PCIe performance, focusing on signal integrity, eye opening measurements (EOM), and bit error rate (BER) to ensure sufficient operating margins.Detect hardware issues, execute root cause analyses, and facilitate resolutions in collaboration with cross-functional teams.Design and implement DOE experiments to troubleshoot hardware problems and enhance system performance.Validate power sequencing, microcontroller functionality, and perform analyses on power efficiency, noise, and transients.Conduct detailed characterizations of I2C bus systems to ensure compliance with design requirements.Document and track PCB issues and validation results, ensuring effective communication with relevant stakeholders.Work closely with design, firmware, and system engineering teams to guarantee comprehensive hardware quality.

Western Digital is on the lookout for a skilled Mechanical Engineer with a minimum of 5 years of experience to design, develop, and validate mechanical components and assemblies for our Hard Disk Drive (HDD) product line and innovative data storage solutions. The selected engineer will lead precision mechanical design efforts for head-disk assemblies (HDA), actuators, base castings, and enclosures while adhering to rigorous performance and reliability standards.Key Responsibilities:HDD-Specific Design & Development:Craft precision mechanical components for HDD systems, including:Head Stack Assembly (HSA) involving actuators, flex circuits, and voice coil motorsBase casting and top cover assembliesSpindle motor integration and mounting systemsShock dampening and vibration isolation structuresBreather filters and contamination control featuresUtilize advanced CAD (SolidWorks/NX) to develop parts with tight tolerancesApply geometric dimensioning and tolerancing (GD&T) for drawings and 3D models, ensuring communication of ideal part specifications with allowable variations to meet functional requirements.Design components for ultra-clean operating environments (Class 10/100 cleanroom).Leverage 3D printing and rapid prototyping techniques to conduct design validation testing.Analysis & Simulation:Conduct Finite Element Analysis (FEA) on structural components to optimize shock resistance and stiffness.Perform modal analysis to avoid resonance in actuator systems.Execute tolerance stack-up analysis for critical assemblies.Testing & Validation:Design test fixtures and develop testing protocols for design validation.Carry out environmental tests for shock, vibration, and thermal cycling.Lead failure mode analysis and implement corrective actions (FMEA, root cause analysis).Cross-Functional Collaboration:Engage with recording heads, media, firmware, and servo teams for seamless system integration.Collaborate with suppliers to establish specifications and maintain quality 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.

Join Archer Aviation, a pioneering aerospace company located in San Jose, California, dedicated to revolutionizing air mobility through our all-electric vertical takeoff and landing aircraft. Our mission is to enhance sustainable air travel, enabling four passengers to fly with minimal noise and maximum efficiency.At Archer, we set ambitious goals and tackle complex challenges. We value diversity within our team, believing it fosters innovation and drives success. We are committed to creating an equitable and inclusive workplace that celebrates the unique contributions of every team member.What You’ll Do:Design structural components and oversee the integration of propulsion systems for full-scale prototype aircraft.Create detailed designs for metallic parts and assemblies to support propulsion mounting, structural interfaces, and overall system integration.Lead the prototype development process, managing requirements, design, BOM, procurement, assembly, and testing.Conduct structural analysis and hand calculations to verify component performance, load paths, and interfaces.Execute Finite Element Analysis (FEA) on metallic structures and mounting systems to validate design integrity.Collaborate with suppliers to select Commercial Off-The-Shelf (COTS) solutions for mounts, fasteners, brackets, and more.Develop comprehensive verification testing strategies and ensure your designs undergo rigorous testing protocols.Create and review technical drawings, plans, and specifications to ensure quality and accuracy.Support the documentation and development of project requirements.Manage supply chain processes and lead procurement efforts for your design components.Work collaboratively with our multi-disciplinary engineering team to drive innovative solutions.

Archer Aviation is an innovative aerospace company located in San Jose, California. We are on a mission to revolutionize sustainable air mobility through the design and manufacture of an all-electric vertical takeoff and landing (eVTOL) aircraft capable of carrying four passengers with minimal noise emissions.At Archer, we are driven by high aspirations and challenging problems. We believe that a diverse workforce enhances our intelligence, fosters better insights, and ultimately contributes to our collective success. We are committed to creating an equitable and inclusive environment that values our differences and celebrates every member of our team.About the RoleWe are looking for a skilled Mechanical Systems Engineer – Actuators to take the lead in designing, integrating, and validating high-performance electromechanical actuators for our prototype aircraft. This position necessitates a profound understanding of actuator system architecture, requirements development, and performance analysis, alongside multidisciplinary collaboration across electrical, controls, and thermal domains. As part of our prototype engineering team, you will be instrumental in laying the groundwork for our production engineering efforts.What You’ll DoDesignOversee the design and development of high-performance, flight-critical electromechanical actuation systems from initial concept to flight testing.Collaborate with suppliers to determine make vs. buy strategies.Conduct trade studies to enhance system architecture and reduce mass.Work alongside suppliers and peer design leads in actuator control, flight controls, GNC, power systems, airframe, and software to create an optimized integrated system for the aircraft.Develop and evaluate CAD models, drawings, and engineering specifications.Create and maintain actuator-system specifications and detailed component requirements.Establish and sustain system-level models to validate actuator performance.Analysis & ValidationDesign test plans and develop test benches for component development and validation.Analyze test results and implement design enhancements based on findings.Act as the primary technical authority for diagnosing and resolving critical design and development challenges.LeadershipGuide the team in best practices and innovative approaches to actuator systems engineering.

Archer Aviation is a pioneering aerospace company located in San Jose, California, focused on developing an all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to revolutionize sustainable air mobility, creating a future where air travel is quiet and efficient, allowing for the transportation of four passengers with minimal environmental impact.We believe that tackling ambitious challenges requires diverse perspectives, and we are committed to fostering an equitable and inclusive workplace. We celebrate the uniqueness of our team members, which we see as a vital component of our success.Responsibilities include:Lead the mechanical design of high-power electrical assemblies, such as DC-DC converters, chargers, and motor controllers, from concept to final design.Collaborate with mechanical, systems, electrical, safety, and manufacturing engineers to optimize designs for overall vehicle performance.Tackle electric propulsion design challenges, including thermal management, high voltage electrical isolation, interconnects, and environmental sealing.Execute detailed designs of components like plastic housings, metal brackets, insulation systems, high voltage connectors, and structural supports.Conduct design analyses to ensure compliance with requirements through heat transfer, thermal analysis, structural calculations, and failure mode analysis.Develop engineering test plans for prototypes.Create assembly and component drawings, and partner with suppliers for manufacturing.Lead prototype builds and design validation testing.

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 FloQast as a Senior Staff Engineer, Data, and become an integral part of our technical leadership team. In this role, you will spearhead the design, implementation, and continuous enhancement of FloQast’s core data platform. You will set the standards for data ingestion, governance, storage, processing, and access that empower our product and analytics systems. Your contributions will establish a robust, scalable, and secure data foundation that enables our engineering, product, and business operations teams to thrive.Note: Visa sponsorship is not available at this time.