Thermo-Mechanical & CFD Simulation Engineering Intern

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.

Join Western Digital as a Mechanical Simulation Engineer, where you will have the opportunity to work on cutting-edge technology in a dynamic and collaborative environment. As part of our team, you will contribute to the development of advanced mechanical systems, utilizing simulation tools to optimize designs and ensure product performance.

Archer Aviation Inc., based in San Jose, California, develops all-electric vertical takeoff and landing (eVTOL) aircraft. The company focuses on sustainable air mobility, designing aircraft that carry four passengers while minimizing noise. This team values diverse perspectives and strives for excellence in solving complex aerospace challenges. Archer fosters an inclusive environment where each team member's contributions are recognized and celebrated. Role overview The Senior CFD Engineer will focus on aerodynamic design and simulation for fixed-wing eVTOL aircraft. This role centers on using Computational Fluid Dynamics (CFD) to advance Archer’s vehicle performance and design. What you will do Conduct aerodynamic design and simulations for Archer eVTOL aircraft using CFD tools Optimize aerodynamic shapes for various vehicle components Develop and maintain high-fidelity models of the aircraft Create high-quality surfaces for Outer Mold Line (OML) definition Correlate and validate CFD results with lower-fidelity simulations, flight test data, and wind tunnel experiments Support aerodynamic design throughout all phases, from concept to certification

Archer Aviation is a pioneering aerospace company headquartered in San Jose, California, focused on developing an innovative all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to propel the future of sustainable air mobility by creating aircraft that transport four passengers with minimal noise and environmental impact.We are committed to engaging in challenging engineering problems and fostering a diverse workplace that enhances our ability to innovate. We believe inclusivity is essential for success, and we strive to create an environment where every team member's unique perspectives are valued and celebrated.Key Responsibilities:Conduct aerodynamic design and simulations for Archer's eVTOL aircraft utilizing Computational Fluid Dynamics (CFD).Perform aerodynamic shape optimizations for various components of Archer vehicles.Develop and uphold high-fidelity models for Archer's eVTOL aircraft.Create high-quality surfaces for Outer Mold Line (OML) definition.Validate CFD simulation results against lower-fidelity simulations, flight test data, and wind tunnel experiments.Assist in the aerodynamic vehicle design process throughout all project phases, from conceptualization to certification.

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

Archer Aviation develops all-electric vertical takeoff and landing (eVTOL) aircraft for four passengers, with an emphasis on low noise and sustainable air travel. Based in San Jose, California, the company is committed to making environmentally friendly mobility more accessible. Archer values diverse perspectives and aims to create an inclusive workplace where everyone can thrive. Role overview The Staff Modeling & Simulation Engineer will advance vehicle modeling, simulation, and analysis for Archer's eVTOL aircraft. This role supports technical development and works across teams to help ensure vehicle performance and safety. Main responsibilities Vehicle performance & modeling: Develop and refine vehicle performance models, conduct trade studies at the vehicle level, and set and validate performance requirements. Handling & maneuvering: Assess flying and handling qualities, determine maneuvering parameters, and verify the aircraft meets responsiveness and safety standards. Dynamics & aeromechanics: Carry out system identification and linearization of complex vehicle dynamics. Analyze aeromechanics and aeroelasticity to support stability. Flight controls support: Support flight control system design, including notch filter development and defining operational envelopes. Simulation & hazard analysis: Characterize aircraft performance and capabilities through simulation, supporting Functional Hazard Analyses (FHAs) at the vehicle level. Data analysis & model validation: Analyze flight test data, identify sources of inaccuracies in models, and improve vehicle physics models. Systems integration: Collaborate with internal and external suppliers to integrate systems into vehicle simulations, including dynamics, powertrain, actuation, sensors, and environmental modeling.

Archer is an innovative aerospace firm located in San Jose, California, dedicated to creating an all-electric vertical takeoff and landing aircraft. Our goal is to enhance sustainable air mobility, designing, manufacturing, and operating an aircraft capable of transporting four passengers with minimal noise production.We aim high and tackle challenging problems, believing that a diverse workforce fosters smarter solutions, deeper insights, and collective success. Archer is committed to nurturing an inclusive and equitable environment that values differences and supports every member of our team.What you will do:Manage Archer's integrated lab environments to support validation and verification processes, including quality assessments, human factors evaluations, and test pilot training.Work collaboratively across internal teams and with suppliers to integrate, instrument, and maintain the configuration of simulation models within a real-time hardware-in-the-loop environment.Develop simulation models of various systems and integrate them into the overarching framework.Create and implement graphical user interfaces to facilitate control of the real-time simulation environment.Support the execution of test plans and automation of testing procedures.

Archer Aviation is a pioneering aerospace company located in San Jose, California, dedicated to the development of an innovative all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to revolutionize sustainable air mobility, providing an exceptional travel experience while minimizing environmental impact.At Archer, we are driven by high aspirations and challenging objectives. We recognize that a diverse workforce enhances creativity and innovation, leading us to greater success. We are committed to fostering an inclusive and equitable workplace that embraces our unique perspectives and celebrates the contributions of every team member.Key Responsibilities:Design and develop advanced flight simulation physics models for eVTOL aircraft.Conduct vehicle-level trade studies to inform design decisions.Enhance the fidelity of system electrical, thermal, and performance models using data from lab and flight tests to facilitate vehicle certification.Collaborate with both internal and external suppliers to integrate their systems into our comprehensive vehicle simulation framework.Assist in design and analysis activities to ensure compliance with business and regulatory requirements at a high confidence level.

Join Archer Aviation, a pioneering aerospace company located in San Jose, California, dedicated to revolutionizing sustainable air mobility through our innovative all-electric vertical takeoff and landing aircraft. Our mission is to provide efficient, eco-friendly air travel, capable of carrying four passengers with minimal noise.At Archer, we aim high and tackle complex challenges. We believe that a diverse workforce enhances creativity and leads to better solutions. We are committed to fostering an equitable and inclusive workplace that values our differences and supports every team member's growth.Responsibilities:Design and develop Flight Simulation Physics Models for VTOL aircraft powered by electric and hybrid electric powertrains.Conduct vehicle-level trade studies to assess various design alternatives.Refine kinematic multi-body flight physics models, including aerodynamics, powertrain, aircraft systems, electrical, thermal, and performance model fidelity, ensuring alignment with lab and flight test data for vehicle certification.Collaborate with internal and external suppliers to seamlessly integrate their systems into our comprehensive vehicle simulation.Perform vehicle-level simulations and performance analyses using Python and MATLAB/Simulink environments.Model potential vehicle failure modes and evaluate their impact on mission objectives.Assist in design and analysis tasks to ensure high confidence in meeting business and regulatory requirements.Conduct simulations for a variety of internal engineering applications, including aircraft loads, structural design, propeller dynamics, and powertrain duty cycles.Generate performance estimates for the aircraft to be incorporated into the aircraft flight manual, flight management systems, and airline operations.

Archer Aviation Inc., located in San Jose, California, is revolutionizing the aerospace industry with our all-electric vertical takeoff and landing aircraft. Our mission is to enhance sustainable air mobility by designing, manufacturing, and operating a state-of-the-art aircraft capable of carrying four passengers while ensuring minimal noise output.At Archer, we aspire to achieve remarkable heights, tackling challenging problems while fostering a diverse and inclusive workplace that drives innovation and collective success. We are committed to creating an equitable environment that values our differences and supports every team member.What You’ll DoExecute Worst Case Circuit Analysis (WCCA) and margin analysis on critical control and measurement circuits, including microcontrollers, resolver interfaces, PMICs, power trees, voltage/current sensors, and digital communication protocols (CAN, SPI, etc.).Conduct circuit simulations using SPICE and MATLAB to evaluate designs under varying component tolerances, temperature extremes, and voltage fluctuations.Lead Design Failure Mode and Effects Analysis (DFMEA) for control and sensor boards, collaborating with Safety and Reliability teams to identify and mitigate potential risks.Analyze the impact of single-event upsets and latch-ups on essential system functionalities.Perform electrical stress analysis and component derating assessments.Assist the design team with analytical validation of power management architectures, sensor interfaces, and MCU-based control circuits.Work closely with hardware, controls, firmware, safety, and reliability teams to ensure compliance with aerospace performance and certification standards.Generate technical documentation and analysis reports to support design reviews and adhere to DO-254/DO-160 compliance.

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.

Archer Aviation Inc. is developing all-electric vertical takeoff and landing (eVTOL) aircraft in San Jose, California. The company aims to advance sustainable air mobility by producing and operating a four-passenger aircraft designed to lower noise pollution. Archer values ambitious engineering, welcomes complex technical challenges, and fosters an inclusive, equitable workplace where every team member's input matters. Role overview The Staff Engineer, Flight Modeling & Simulation, will focus on developing and refining simulation models that support the design, certification, and operation of Archer’s eVTOL aircraft. Key responsibilities Develop advanced flight simulation physics models tailored for eVTOL aircraft. Conduct vehicle-level trade studies to inform design decisions. Enhance electrical, thermal, and performance model accuracy by incorporating lab and flight test data to support vehicle certification. Collaborate with internal teams and external suppliers to integrate their systems into the overall vehicle simulation framework. Contribute to design and analysis efforts to help meet both business and regulatory requirements with a high degree of confidence.

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

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 enhance the advantages of sustainable air mobility through cutting-edge design, manufacturing, and operation of aircraft that can transport four passengers with minimal noise impact.We aspire for greatness, tackling challenging issues head-on, and firmly believe that a diverse workforce enhances our intelligence, drives superior insights, and ultimately leads us all towards success. We are committed to fostering an equitable and inclusive workplace that values our differences and supports every team member.What you’ll do:Design, develop, and sustain Continuous Integration and Continuous Deployment (CI/CD) workflows and automated testing pipelines for the GNC and Vehicle Simulation teams using tools such as GitHub Actions and TeamCity.Assist in creating and maintaining automated toolchains for generating, compiling, and deploying Simulink and MATLAB code across various environments, including desktop simulations, Hardware-in-the-Loop (HIL) setups, and flight computers for both subscale and full-scale vehicles.Architect new, and oversee existing, High-Performance Computing (HPC) infrastructure to facilitate extensive Monte Carlo simulations, batch regression testing, and parallelized simulations and evaluations.Oversee key software interfaces between the "Virtual Vehicle" (Simulink models) and downstream platforms, including managing Interface Control Documents (ICDs), data dictionaries, and signal mapping to embedded middleware.Create C/C++ wrapper functions, S-functions, and harnesses to ensure smooth integration of compiled code and external libraries within the MATLAB/Simulink framework.Act as a cross-functional engineering multiplier: Utilize your expertise in aerospace principles to contribute directly to vehicle simulation modeling, physics tooling, or GNC integration tasks as required.Serve as the primary technical liaison between the Flight Dynamics & Control (FD&C) team and the Platform embedded software team, ensuring the accurate translation of complex algorithms into real-time execution.

Archer Aviation is a pioneering aerospace company located in San Jose, California, dedicated to the development of an all-electric vertical takeoff and landing (eVTOL) aircraft. Our mission is to enhance sustainable air mobility by creating aircraft that can transport four passengers with minimal noise and environmental impact.We are driven by ambitious goals and complex challenges, and we believe that a diverse workforce fosters innovation, enhances insights, and propels us toward collective success. Our commitment to an equitable and inclusive environment celebrates the unique contributions of each team member.What You Will Do:Conduct low, mid, and high-fidelity aerodynamic simulations for Archer's eVTOL aircraft.Develop linear and non-linear aerodynamic models to forecast aircraft behavior and performance across the flight envelope.Analyze experimental data from flight tests or wind tunnel experiments to identify model error sources, validate, and enhance aerodynamic models.Create efficient methodologies to integrate flight test data into aerodynamic simulation models of varied fidelity and complexity.Contribute to the advancement of Archer's aerodynamic software stack, optimizing methods and workflows.Collaborate with cross-functional teams and pilots for updates to flight simulator aerodynamic modeling and issue resolution.

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.

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.

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.

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.