Senior Thermal Engineer Liquid Cooling Systems jobs in San Jose – Browse 762 openings on RoboApply Jobs

Senior Thermal Engineer Liquid Cooling Systems jobs in San Jose

Open roles matching “Senior Thermal Engineer Liquid Cooling Systems” with location signals for San Jose. 762 active listings on RoboApply Jobs.

762 jobs found

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Etched logo
Full-time|On-site|San Jose

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 …

Jan 14, 2026
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Archer Aviation logo
Full-time|$172K/yr - $216K/yr|On-site|San Jose, California, United States

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.

Apr 17, 2026
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Archer logo
Full-time|$144K/yr - $180K/yr|On-site|San Jose, California, United States

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.

Apr 17, 2026
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Hark logo
Full-time|On-site|San Jose

About Hark Hark is at the forefront of artificial intelligence, dedicated to developing sophisticated, personalized AI systems. Our goal is to create an AI that is proactive, multimodal, and capable of engaging with the world through various modalities such as speech, text, vision, and long-term memory. We are combining this intelligence with state-of-the-art hardware to establish a universal interface between humans and machines. Unlike current AI, which primarily operates through outdated chat interfaces, Hark is pioneering the next generation of agentic systems that interact seamlessly with people and their environments. To achieve this vision, we are creating multimodal models and cutting-edge AI hardware, designed from the ground up to serve as a cohesive interface for a new era of intelligent systems. About the Role As a Senior Product Design Engineer specializing in thermal systems, you will be responsible for shaping the thermal architecture of our AI-driven consumer devices, guiding projects from initial concept through to detailed architecture and production validation. You will balance critical factors such as performance, battery life, cost, and user comfort while engaging in hands-on simulation, prototyping, and testing to facilitate informed decisions regarding architecture. Your collaboration with industrial design, mechanical, electrical, and software teams will be essential in developing comprehensive thermal solutions.

Apr 14, 2026
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Antora logo
Full-time|$129K/yr - $170K/yr|On-site|San Jose

At Antora, we are revolutionizing industrial energy solutions by developing advanced thermal batteries designed to deliver continuous, low-cost energy for industrial operations. Proudly manufactured in the U.S., our modular thermal batteries provide dependable heat and power, empowering industrial facilities of any size to achieve predictable and profitable decarbonization. We are on a mission to electrify global industry while supporting American manufacturing, reducing energy costs for consumers, and enhancing the competitiveness of U.S. industry.We are expanding our team with individuals who prioritize collaboration and purpose, cherish connection through laughter and joy, and approach their work with humility and openness. Our commitment to fostering a diverse, passionate, and innovative team is unwavering as we strive for a future where every industrial facility worldwide is powered by abundant, clean, low-cost energy.Position SummaryWe are on the lookout for a Senior / Staff Systems Engineer in San Jose—an enthusiastic, inquisitive, and dedicated engineer to join our Technology Development team. Your expertise will contribute to delivering zero-carbon industrial heat and power through our innovative solid-state thermal battery solutions.This role is deeply collaborative and central to system innovation. You will engage across various disciplines to influence the architecture and operational philosophy of Antora’s future offerings. Leveraging first-principles modeling, data analytics, and real-world performance insights, you will accelerate our mission to decarbonize the industrial sector at scale.

Jan 21, 2026
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Archer Aviation logo
Full-time|$152.1K/yr - $190.1K/yr|On-site|San Jose, California, United States

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.

Apr 28, 2026
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Archer Aviation logo
Full-time|$152.1K/yr - $190.1K/yr|On-site|San Jose, California, United States

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.

Mar 9, 2026
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Archer Aviation Inc. logo
Senior Staff Systems Engineer

Archer Aviation Inc.

Full-time|$182.5K/yr - $228K/yr|On-site|San Jose, California, United States

Archer Aviation Inc., situated in the heart of San Jose, California, is at the forefront of aerospace innovation, dedicated to constructing an all-electric vertical takeoff and landing aircraft. Our mission is to revolutionize sustainable air mobility by designing, manufacturing, and operating aircraft capable of transporting four passengers with minimal noise pollution.We aspire to achieve remarkable advancements while tackling complex challenges. We firmly believe that a diverse workforce enhances our intelligence, drives insightful solutions, and propels us toward collective success. Our commitment is to foster an equitable and inclusive work environment that honors our differences and uplifts every member of our team.The RoleIn the role of Senior Staff Systems Engineer within the Air Vehicle group, you will focus on Mechanical Systems. You will engage with various systems including Landing Gear, Cabin, Closures, Environmental Control, Airframe, and Wiring Systems, taking on the responsibility as the Systems Engineer for one of these areas. This position allows you to bridge the gap between high-level aircraft requirements and detailed component design, ensuring seamless interfaces. Your confidence and eagerness to collaborate with multiple disciplines across the organization will be paramount to your success.What you’ll do:Collaborate with diverse engineering teams to design high-reliability, safety-critical systems for aircraft.Lead the preparation of reports to validate system readiness for key milestone reviews.Serve as the primary contact for system-level documentation and reporting.Drive change management initiatives within a complex product structure.Lead efforts to:Conduct operational and functional analyses,Define and decompose system requirements with traceability through overall system architecture,Establish and manage technical/programmatic performance metrics (cost, weight, performance objectives),Ensure full compliance with safety regulations.Collaborate with technical disciplines to develop verification plans, support verification/test planning, and conduct assessments to demonstrate compliance with system requirements.

Feb 5, 2026
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Archer Aviation Inc. logo
Full-time|$140K/yr - $195K/yr|On-site|San Jose, California, United States

Join Archer Aviation, a pioneering aerospace firm located in San Jose, California, dedicated to revolutionizing air mobility with our all-electric vertical takeoff and landing aircraft. Our mission is to promote sustainable air travel while ensuring minimal noise pollution, as our aircraft is designed to safely transport four passengers.We are committed to solving complex challenges and fostering a diverse workplace that fuels innovation and success. Our inclusive environment values differences and supports every team member in their journey towards excellence.As a Senior Propulsion Electrical Systems Engineer, you will lead the lifecycle of Airborne Electronic Hardware (AEH) systems for our electric propulsion units (EPU). This pivotal role connects intricate power electronics design with aircraft certification, encompassing responsibilities like defining requirements, overseeing DO-254 compliance, and conducting thorough verification and validation (V&V) campaigns for high-voltage inverters and motor control hardware. Your contributions will ensure our electric engines adhere to rigorous safety standards and environmental resilience necessary for Part 33/Part 23 certification.

Feb 17, 2026
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Antora logo
Full-time|$104K/yr - $155K/yr|On-site|San Jose, CA

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.

Dec 30, 2025
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Archer Aviation logo
Full-time|On-site|San Jose, California, United States

Archer Aviation is a pioneering aerospace company located in San Jose, California. We are on a mission to revolutionize sustainable air mobility by developing an all-electric vertical takeoff and landing (eVTOL) aircraft. Our innovative design prioritizes not only efficiency but also minimal noise pollution, enabling eco-friendly transportation solutions.At Archer, we value diversity and believe that a varied workforce fosters creativity and enhances problem-solving. We are committed to creating an inclusive environment that celebrates our differences and empowers every team member to contribute to our shared success.We are seeking a skilled Senior Test Engineer to join our Propulsion Team. This pivotal role focuses on the verification and testing of Archer's proprietary Propulsion Tilt-rotor system, which integrates with electric engines and various electric actuation subsystems, including both low and high-voltage power distribution systems. The ideal candidate will have substantial experience in executing complex test campaigns at both the component and integrated system levels.

Apr 2, 2026
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Archer Aerospace logo
Full-time|$140K/yr - $160K/yr|On-site|San Jose, California, United States

Archer Aerospace is building the future of sustainable aviation in San Jose, California. The team is developing an all-electric vertical takeoff and landing (eVTOL) aircraft designed to move four passengers quietly and efficiently, aiming to reshape air mobility with minimal environmental impact. The company values excellence, inclusion, and diversity. Team members are supported and differences are embraced to create an equitable workplace where everyone can succeed. Role Overview The Senior Systems Engineer - Fly By Wire (FBW) will help define, validate, and verify system requirements for Archer’s flight control systems. This role works closely with suppliers to ensure requirements are properly communicated and validated, focusing on flight-critical systems that interact with pilots and other major aircraft components. The position supports FAA compliance and certification efforts for the Archer Midnight eVTOL aircraft. Key Responsibilities Manage system-level requirements and oversee validation and verification activities according to ARP-4754A-based processes. Collaborate with other Systems Engineers to ensure the integrated system meets specifications and is tuned for performance. Support suppliers in developing lower-level requirement sets, working with technical leads and subject matter experts. Participate in integration testing, troubleshooting, and problem-solving across multiple disciplines. Assist in testing at both equipment and aircraft levels, including work at Archer facilities and during flight tests. Help prepare compliance documentation, such as test procedures and reports, to support validation, verification, and certification. Work with cross-functional teams, suppliers, and testing labs to move projects forward.

Apr 15, 2026
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Trackonomy Systems logo
Systems Engineer

Trackonomy Systems

Full-time|$120K/yr - $200K/yr|On-site|San Jose

Become a Part of the Trackonomy Team! At Trackonomy, we prioritize your personal and professional growth through diverse responsibilities and a commitment to innovative practices. Join our team and advance your career in an environment that transforms both industries and individual lives. Connection & Community: Every member of Trackonomy is integral to our mission, with each individual valued as a co-founder. Our collective ambition is to create a lasting impact on the world, making every initiative at Trackonomy a significant journey. Growth & Development: Engage in a variety of roles and learn from our experienced leaders. Your drive and enthusiasm will shape your career path here. We cherish innovation and provide unmatched opportunities, ensuring your career is a transformative experience. At Trackonomy, your growth is multidimensional, allowing you to collaborate with and learn directly from senior leaders across different departments. Here, your potential—driven by skill, passion, and performance—will dictate the extent of your role. We believe in meritocracy, providing unique opportunities not commonly found elsewhere. Impact: Trackonomy is committed to delivering impactful technological solutions that enhance our world. From fire prevention to improved security, our innovations not only transform industries but also save lives. Join us and be part of meaningful change.

Feb 25, 2026
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archer56 logo
Full-time|On-site|San Jose, California, United States

archer56 seeks a Senior Electrical Systems Engineer based in San Jose, California. This position centers on creating and improving electrical systems that support the company's technology goals. Role overview Work will involve designing new electrical systems and contributing to the development of advanced solutions. Projects often require a focus on technical progress and ongoing innovation within the organization. Key responsibilities Design and develop electrical systems for new and existing projects Advance technology initiatives within the company Support innovation efforts across engineering teams

Apr 24, 2026
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Antora logo
Full-time|$165K/yr - $180K/yr|On-site|San Jose, CA

Antora is revolutionizing the industrial landscape with cutting-edge thermal batteries designed to ensure continuous operations powered by affordable energy. Our factory-manufactured modular thermal batteries, constructed in the United States, provide dependable heat and power, facilitating the predictable and profitable decarbonization of industrial facilities of all sizes. At Antora, we are electrifying industries worldwide while bolstering U.S. manufacturing jobs, reducing energy costs for consumers, and enhancing the competitive edge of American industries.We are in the process of expanding our skilled team with individuals who prioritize teamwork and mission alignment, appreciate the joy of connection, and build relationships grounded in humility and openness. Our commitment is to cultivate a diverse, passionate, and innovative workforce dedicated to a future where every industrial facility on this planet operates on abundant, clean, and cost-effective energy. Position Overview We are on the lookout for a motivated and enthusiastic individual to join our engineering and project execution team. You will be instrumental in delivering zero-carbon industrial heat and power through our innovative solid-state thermal battery technology. As a collaborative team, we are deeply passionate about our work and aim to make a meaningful impact while nurturing lasting relationships.In the role of Project Engineer, you will manage balance-of-plant (BOP) systems for Antora Energy’s thermal energy storage initiatives across both test and commercial sites. Your expertise will be vital as you become a key technical member of our rapidly expanding organization, leading the deployment of our inaugural commercial-scale projects.

Feb 9, 2026
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Archer Aviation logo
Full-time|$140K/yr - $184K/yr|On-site|San Jose, California, United States

Archer Aviation is at the forefront of aerospace innovation, headquartered in San Jose, California. We are dedicated to revolutionizing air travel by developing an all-electric vertical takeoff and landing aircraft that prioritizes sustainable air mobility. Our aircraft is designed to accommodate four passengers while minimizing noise and environmental impact.We aspire to tackle challenging problems and believe that a diverse workforce fuels our creativity and success. Our commitment to fostering an inclusive and equitable workplace empowers all team members to thrive and contribute to our shared vision.As a Hardware Systems Engineer within our inverter design team, you will play a pivotal role in steering the systems engineering processes necessary for the certification of Airborne Electronic Hardware (AEH). Your collaboration with circuit designers will be crucial in establishing requirements, creating design templates and checklists, reviewing analyses, and ensuring that our hardware meets stringent certification standards.

Feb 5, 2026
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Archer Aviation logo
Full-time|$140K/yr - $170K/yr|On-site|San Jose, California, United States

Archer Aviation 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 enhance sustainable air mobility, and our cutting-edge aircraft is designed to transport four passengers with minimal noise pollution.We set ambitious goals and tackle complex challenges, believing that a diverse workforce drives smarter solutions and deeper insights. We are committed to fostering an equitable and inclusive environment that values our differences and supports the success of all team members.Who We Are Seeking:We are in search of a skilled Senior Test Engineer to join our Flight Control Systems Team. This position emphasizes the verification and testing of Archer's advanced fly-by-wire flight control system, including its subsystems and integration with various aircraft systems such as avionics, power distribution, and engines. Candidates should possess robust testing experience and the capability to execute complex test campaigns effectively.Your Responsibilities:Develop a thorough understanding of the flight control system, its architecture, and the detailed design of all subsystems and components.Create and implement requirements-based tests for the eVTOL Flight Control System.Collaborate with team members to correlate test results with analytical predictions.Analyze test data to validate the performance of tested components.Ensure testing adheres to FAA, DoD, and other aviation standards.Confirm that the scope of tests aligns with aircraft certification requirements.Compile technical reports that detail test outcomes.

Feb 5, 2026
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Archer Aviation logo
Full-time|$152.1K/yr - $190.1K/yr|On-site|San Jose, California, United States

Archer Aviation is a pioneering aerospace firm based in San Jose, California, focused on designing and manufacturing an all-electric vertical takeoff and landing aircraft. Our mission is to propel the future of sustainable air mobility, creating an aircraft capable of carrying four passengers while minimizing noise pollution.We aim high, tackling complex challenges, and we believe that a diverse workforce enhances our intelligence, fosters better insights, and ultimately leads to collective success. We are committed to fostering an equitable and inclusive workplace that values our differences and celebrates every team member.We are looking for a highly skilled Staff IT Systems Engineer to support our Systems Engineering, Endpoint Engineering, and Digital Workplace initiatives. In this role, you will be responsible for delivering an exceptional technology experience for our employees, ensuring operational excellence in our core IT services, and driving the advancement of our digital workplace strategy as we grow.

Mar 24, 2026
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Electric Hydrogen logo
Full-time|$145K/yr - $195K/yr|Hybrid|San Jose, California, United States

Electric Hydrogen is on a mission to produce molecules that will help decarbonize our planet! Our exceptional team is our greatest asset, allowing us to deliver hydrogen through renewable electrolysis for heavy industries, at costs lower than fossil fuels.We are seeking a Senior Control Systems Engineer to become a vital member of our team. In this role, you will be responsible for the development and maintenance of control system documentation, which includes P&IDs, control narratives, I/O lists, loop diagrams, and cause-and-effect matrices for our large-scale electrolyzer systems. This position offers the flexibility of working onsite/hybrid at our San Jose, CA office or remotely from Houston, TX, reporting directly to the Director of Software Engineering.

Feb 27, 2026
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Archer Aviation logo
Full-time|On-site|San Jose, California, United States

Archer Aviation is at the forefront of aerospace innovation, based in San Jose, California. We are pioneering the development of an all-electric vertical takeoff and landing aircraft, with a commitment to enhancing sustainable air mobility. Our aircraft design focuses on transporting four passengers while minimizing noise pollution.We aim high and tackle challenging problems, believing that workplace diversity fuels our intelligence, enhances insights, and propels our collective success. Our commitment to fostering an equitable and inclusive environment ensures that we celebrate and support the unique contributions of all team members.Key Responsibilities:As a Senior BMS Hardware Systems Engineer, you will spearhead the development and execution of airborne electronic hardware systems for Archer's high voltage Battery Management System (BMS). Your expertise will ensure compliance with rigorous safety, reliability, and certification standards essential for eVTOL aircraft. You'll be tasked with creating and managing detailed electronic hardware requirements and design documentation, directly influencing the certification and safe operation of Archer's battery systems that power the future of urban air mobility.Collaborate across engineering disciplines to support the implementation of high-reliability, safety-critical systems for aircraft design.Develop comprehensive hardware requirements and traceability matrices aligned with system and certification standards (DO-254, ARP4754A).Define and decompose hardware system requirements, ensuring traceability through the overall system architecture.Create robust system/subsystem interface definitions.Coordinate with regulatory bodies and Designated Engineering Representatives (DERs) during the development and review of AEH certification substantiation artifacts.Work closely with the electrical design team to ensure product alignment with business requirements.Engage in design reviews, hardware qualification, and root cause analysis to guarantee robust and certifiable hardware performance.

Feb 12, 2026

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