Join Our Team as a Senior Process EngineerAt Substrate, we are tackling one of the most crucial technological challenges facing the United States today. Positioned at the forefront of advanced manufacturing and innovative physics, our mission is to develop groundbreaking technologies that will revolutionize the semiconductor industry and fortify America’s technological leadership. We pride ourselves on our team of world-class scientists, engineers, and technical experts dedicated to crafting technology for the future.Job OverviewAs a Senior Process Engineer, you will play a pivotal role in conceptualizing and prototyping essential components of our platform through advanced process development and materials characterization. This hands-on position involves working in multiple cleanrooms and user facilities around the vibrant San Francisco Bay Area while also leading the efforts of fellow team members. You will oversee critical aspects of our fabrication process, engaging in both micro- and nanofabrication as well as characterizing the materials and structures you create. This role will encompass various nanofabrication techniques, such as lithography, wet and dry deposition, and etching.Additionally, you will contribute significantly to the establishment of Substrate’s internal research facilities. Your expertise will be instrumental in early-stage development and testing, which are vital to our ambitious mission of reshaping the semiconductor landscape for years to come.

Technical Program ManagerJoin Substrate, a pioneering force in tackling critical technological challenges in the United States. We are positioned at the cutting edge of advanced manufacturing and innovative physics, striving to revolutionize the semiconductor industry and enhance America’s technological prowess. Our team comprises elite scientists, engineers, and technical specialists dedicated to developing groundbreaking technologies.Role OverviewAs a Technical Program Manager, you will lead intricate technical programs from inception to completion, orchestrating efforts among independent scientists, engineers, and technical professionals. This role involves managing multiple interrelated workstreams where hardware development, R&D, manufacturing, and scientific validation unfold concurrently, each dependent on the other.Key ResponsibilitiesDirect technical programs that encompass hardware components and scientific validation across various simultaneous workstreams.Oversee program timelines, budgets, and resource distribution across numerous dynamic projects.Monitor critical interdependencies between R&D, hardware development, scientific validation, and manufacturing readiness.Collaborate closely with multidisciplinary scientists to convert research insights into technical specifications.Partner with hardware engineering teams for component selection, design validation, and manufacturing preparedness.Coordinate with security experts to ensure compliance with privacy and security standards across teams and projects.Manage relationships with vendors, including component suppliers, manufacturers, and testing facilities.Conduct risk assessments and implement mitigation strategies for technical and supply chain vulnerabilities.Facilitate technical evaluations and integration decisions across diverse project contributors.Report program progress, risks, and strategic recommendations to executive leadership.Develop and maintain comprehensive technical program documentation while respecting contributor independence.

Join Our Team as a Mechanical EngineerAt Substrate, we are tackling one of the most pressing technological challenges in the United States. Situated at the nexus of advanced manufacturing and innovative physics, our team is dedicated to developing groundbreaking technologies that will revolutionize the semiconductor industry and enhance America’s technological prowess.As a Mechanical Engineer, you will play a pivotal role in designing and developing ultra-high vacuum (UHV) systems, precision mechanisms, and high-speed motion systems. This is an exciting opportunity for candidates who possess extensive hands-on engineering experience in high-precision manufacturing settings and can navigate complex technical challenges independently. You will collaborate closely with scientists, engineers, and technical specialists across various projects and locations, including external production sites. This position is full-time and office-based.

Senior Electromechanical EngineerJoin Substrate, a pioneering force in addressing critical technological challenges in the United States. We stand at the forefront of advanced manufacturing and innovative physics, developing cutting-edge technologies that are set to transform the semiconductor industry and fortify America's technological leadership. Our team comprises world-class scientists, engineers, and technical experts dedicated to building the future of technology for the nation.As a Senior Electromechanical Engineer, you will spearhead the design and development of next-generation high-precision electrostatic chucks (ESCs) that will drive innovations within semiconductor manufacturing. This role presents an extraordinary opportunity to work at the cutting edge of semiconductor technology, collaborating with a talented team to tackle complex technical challenges and deliver top-tier solutions.

At Mechanize, we are pioneering the development of Reinforcement Learning (RL) environments tailored to train AI models for real-world applications. Our ambition is to facilitate the complete automation of the economy, partnering with leading AI laboratories. Discover more at mechanize.work.As a Software Engineering Intern at Mechanize, you will play a pivotal role in assisting our team to develop these groundbreaking RL environments. If you have a solid command of Python programming and possess a keen intellect, we would love to hear from you.We are currently seeking interns for Winter 2026, Spring 2026, and Summer 2026.No prior experience in machine learning or AI is necessary.Curious about our interview process? Learn more here: https://www.mechanize.work/how-our-interview-process-works/

Join mechanize as a Senior Software Engineer, where you'll contribute to innovative software solutions that shape the future of technology. In this role, you will lead projects, mentor junior developers, and collaborate with cross-functional teams to deliver high-quality software products. Your expertise will drive architectural decisions and enhance our development processes.

Standard Cell Design LeadJoin Substrate, a pioneering force in addressing critical technological challenges in the U.S. We are at the forefront of advanced manufacturing and innovative physics, dedicated to reshaping the semiconductor landscape and enhancing America's technological prowess. Our team comprises world-renowned scientists, engineers, and technical experts committed to creating transformative technology.As the Standard Cell Design Lead, you will spearhead the development and optimization of standard cell libraries while overseeing cell characterization and library validation initiatives. This role demands a profound knowledge of digital cell design, layout, and timing characterization, along with a robust understanding of library requirements for digital design workflows. You'll collaborate with various teams across multiple locations, including external fabrication facilities, in this full-time, onsite position.

At Mechanize, we are on a mission to revolutionize the economy through the automation of real-world tasks. We specialize in building reinforcement learning (RL) environments designed to enhance AI models, enabling them to tackle complex challenges. Our innovative solutions are trusted by leading AI laboratories. Discover more about our work at mechanize.work.As a Junior Software Engineer at Mechanize, you will play a key role in developing RL environments that cater to the needs of the top AI labs. This position is ideal for individuals who are nearing graduation or have 0-2 years of experience in software engineering, and possess proficiency in Python programming.Prior experience in machine learning or AI is not a requirement.Curious about our interview process? Learn more about it here.

At Mechanize, we specialize in developing reinforcement learning (RL) environments that empower AI models to execute real-world tasks efficiently. Our mission is to drive the complete automation of the economy, providing innovative solutions to leading AI laboratories. Discover more about our work at mechanize.work.As a Senior Software Engineer at Mechanize, you will contribute to the creation of RL environments that are pivotal in the field of AI model training. Ideal candidates will have 2-5 years of software engineering experience with proficiency in Python programming. Previous experience in machine learning or AI is not a prerequisite.For insights on our interview process, visit: Interview Process at Mechanize.

Astranis is at the forefront of satellite technology, designing and launching advanced satellites that push the boundaries of human exploration into the cosmos. Our spacecraft provide dedicated, secure networks for a diverse range of elite clientele, including large corporations, government entities, and the U.S. military. With five satellites successfully in orbit and an exciting pipeline of launches ahead, we are addressing a robust backlog of over $1 billion in commercial contracts.Astranis has emerged as the go-to partner for satellite communications, meeting the high standards of clients who demand exceptional uptime, data security, network visibility, and tailored solutions. Having secured over $750 million in funding from industry-leading investors such as Andreessen Horowitz, Blackrock, and Fidelity, our team of 450 dedicated engineers and entrepreneurs is passionate about revolutionizing satellite technology from our expansive headquarters in Northern California.Mechanical EngineerAs a Mechanical Engineer at Astranis, you will play a pivotal role in the design, evaluation, testing, and assembly of spacecraft components and mechanical systems. A strong problem-solving aptitude, hands-on experience, and a passion for innovative design are essential. Experience with spacecraft, mechanisms, or composites is advantageous but not mandatory.ResponsibilitiesDesign, evaluate, procure, assemble, and test primary structures, bracketry, and mechanisms for Astranis spacecraft. This includes components made from both composite and metallic materials, utilizing various manufacturing processes.Develop specifications for components and systems, including load requirements, interfaces, and functional criteria.Conduct mechanical and thermal analysis for spacecraft systems to ensure optimal performance.Collaborate with team members to integrate components and systems into the spacecraft, while documenting and refining processes to enhance future builds.

Impulse is a San Francisco-based team of engineers, designers, and innovators dedicated to making sustainable choices at home more accessible and appealing. The company focuses on designing high-performance products that support scalable home electrification and blend seamlessly into daily routines. As a VC-backed startup, Impulse is laying the groundwork for lasting change in a pivotal industry and welcomes those who want to help shape its future. Role overview The Mechanical Engineer will work from Impulse’s headquarters in the Design District of San Francisco. This role centers on designing, architecting, and supporting the manufacturing of new products. Collaboration is key: expect to work closely with software developers, product managers, and company leadership. Regular on-site presence is required, though working remotely 1-2 days per week may be possible for the right candidate. What you will do Develop hardware products as part of a growing company with a forward-looking mission. Create durable architectures that shape both current and future product lines. Work with cross-functional teams throughout product definition and development. Build and test functional prototypes to refine designs. Engage in hands-on design and testing of new and experimental technologies. Support ongoing production and improvement efforts, focusing on design and manufacturing processes for both existing and upcoming products. Contribute to bringing production-ready devices to market. Oversee volume manufacturing for a new category of products. Requirements Minimum of 7 years’ experience in mechanical engineering. Demonstrated success developing and launching high-quality products in consumer electronics, automotive, or IoT sectors. Advanced skills in mechanical CAD software, particularly SolidWorks. Strong communication abilities, including explaining complex technical concepts to varied audiences. Location This position is based in the Design District of San Francisco, CA. Regular commuting to the San Francisco HQ is expected. While on-site work is preferred, some remote work (1-2 days per week) may be considered.

Join our dynamic team at Plaud Technologies as a Mechanical Engineer. We are seeking a highly motivated individual to contribute to innovative engineering solutions. You will be responsible for designing, analyzing, and implementing mechanical systems that enhance our products and services.The ideal candidate will have a strong foundation in mechanical engineering principles, experience with CAD software, and a passion for problem-solving. If you're looking to make a significant impact in a collaborative environment, we want to hear from you!

Company Overview:At Specter, we are pioneering a groundbreaking software-defined control plane tailored for the physical world. Our mission begins with safeguarding American enterprises by providing them with unparalleled insight into their physical assets.We are developing an interconnected hardware-software ecosystem built on advanced multi-modal wireless mesh sensing technology, significantly reducing the cost and time required to deploy sensors by a factor of 10. Our platform aims to serve as the perception engine for a company’s physical presence, facilitating real-time visibility of perimeters and enabling autonomous operations management.Founded by passionate innovators, Xerxes and Philip, who bring experience from leading organizations like Anduril, Tesla, Uber, and the U.S. Special Forces, we are a rapidly expanding team committed to empowering our partners in the evolving landscape of physical AI and robotics.

About Atomic SemiAtomic Semi is pioneering the development of a compact, high-speed semiconductor fabrication facility.Utilizing current technology and a few strategic simplifications, we are set to construct the tools ourselves to enable rapid iteration and enhancement.Our goal is to assemble a small, elite team of hands-on engineers across various disciplines—mechanical, electrical, hardware, computer, and process engineering—to take ownership of the entire technology stack from atoms to architecture. We are optimistic about the future and committed to pushing the boundaries of what technology can achieve.We believe that smaller, faster, and self-built solutions are the key to advancement.Equipped with state-of-the-art 3D printers, a diverse range of microscopes, e-beam writers, and general fabrication tools, we have the capability to invent anything that might be missing along our journey.Atomic was founded by Sam Zeloof, known for his garage chip-making, and Jim Keller, a seasoned leader in the semiconductor industry for over 40 years.About the RoleAs a Mechanical Engineer at Atomic Semi, your primary responsibilities will include designing, refining, and constructing specialized equipment for semiconductor fabrication.We seek hands-on engineers to tackle diverse challenges, from heavy design tasks to integrating mechanical, optical, and electronic components, as well as automating production processes. Our philosophy is to build and test solutions rapidly—in days or weeks, not months—with a focus on practical solutions that address real production needs.We are hiring across multiple experience levels for various specialized teams:The Positioning Team: This team is dedicated to systems-level engineering, designing, prototyping, and building semiconductor fabrication equipment and subsystems related to lithography, motion, and metrology.The Vacuum Team: This team handles the design, prototyping, validation, and scaling of core semiconductor fabrication equipment, including tool families such as Anneal, Deposition, Etch, and Supporting Infrastructure, with objectives ranging from fundamental design to automation readiness.

Join Kargo as a Mechanical Design Engineer and contribute to innovative projects that shape the future of technology. We are looking for a talented engineer with a passion for mechanics and design, who thrives in a collaborative environment. In this role, you will be responsible for developing high-quality mechanical designs while ensuring adherence to industry standards and best practices.

ABOUT PAX LABSAt PAX, our mission is to elevate consumer experiences through innovative products that honor the plant. For nearly 20 years, we have crafted high-performance devices designed with precision, purity, and reliability, trusted by millions globally.Our company culture prioritizes our people, collaboration, and enjoyment in the workplace. We believe that exceptional products and a fulfilling employee experience are intrinsically linked. PAX has received accolades from leading publications including The New York Times’ Wirecutter, TIME, Fast Company, GQ, and High Times, highlighting our commitment to quality and innovation. We are proud to be certified Plastic Negative by rePurpose Global, ensuring that we remove twice as much plastic from nature as we use in our products.ROLE OVERVIEWAs a Mechanical Engineer reporting to the Director of Mechanical Engineering, you will play a pivotal role in designing innovative components and subassemblies for our new products that are not only cost-effective but also reliable and timely. Your expertise will also extend to troubleshooting and enhancing existing products, collaborating with fellow engineers to devise solutions for complex structural, thermal, illumination, and usability challenges. Proficiency in sketching, prototyping, and familiarity with mechanical engineering principles, product development best practices, and design documentation is essential.Our products are celebrated for their aesthetic appeal, durability, and innovative technology. As a Mechanical Engineer, you will be instrumental in shaping the architecture and design of all our products, working closely with the Hardware team to realize our product vision. This role is fundamental to the future development of PAX products.KEY RESPONSIBILITIES:Engage in the design and development of mechanical product architectures, including assemblies, modules, parts, and accessories.Participate actively in decision-making processes pertaining to mechanical product design and architecture.Conduct structural, tolerance, thermal, and fluid analyses to inform design decisions.Generate detailed 3D and 2D drawings, including specifications that clearly define components and subassemblies.Collaborate with industrial designers to evaluate product details for manufacturability and propose improvements.

Astranis is at the forefront of space innovation, developing state-of-the-art satellites that extend humanity's exploration capabilities into high orbits. Our satellites deliver reliable and secure communication networks to a diverse clientele, including large corporations, government entities, and military organizations. With five satellites currently in orbit and several more on the horizon, we are addressing a substantial backlog of over $1 billion in commercial contracts.As the preferred satellite communications partner for clients with rigorous demands for uptime, data integrity, and customized solutions, Astranis has successfully secured over $750 million in funding from esteemed investors like Andreessen Horowitz, Blackrock, and Fidelity. Our dedicated team of 450 engineers and entrepreneurs works passionately from our expansive 153,000 sq. ft. headquarters in Northern California, USA, to design, build, and operate our cutting-edge satellites.Mechanical Integration EngineerJoin our Mechanical Integration team at Astranis and play a pivotal role in constructing components, subsystems, and complete satellites. Collaborate closely with designers, technicians, and testing teams to shape the future of satellite communication while also having the chance to redefine our manufacturing processes.

Join Bright Machines as a Senior Mechanical Engineer, where you will play a pivotal role in designing and developing innovative automated solutions. Your expertise will contribute to our mission of transforming manufacturing through advanced technology.

About Poseidon Aerospace:Poseidon Aerospace is at the forefront of innovation, specializing in the design and operation of unmanned aircraft for commercial logistics and defense purposes. Our flagship platforms, the Heron seaplane and the Egret STOL aircraft, are engineered to transport up to two tons of payload over distances exceeding a thousand nautical miles. Based in San Francisco, we also have satellite offices in Washington, DC, and Maine, fostering a dynamic work environment focused on cutting-edge aerospace technology.Join Our Team:We invite aspiring engineers with less than a year of full-time, post-graduation experience to apply for our Mechanical Engineer (New Graduate) position. This is an excellent opportunity to launch your career in a thriving industry.Your Role:As a Mechanical Engineer, you will play a pivotal role in designing the structural and mechanical systems essential for the functionality and manufacturability of our composite aircraft. Your responsibilities will encompass CAD design, mechanism development, and finite element analysis, all aimed at creating lightweight and reliable structures suitable for flight and marine environments. This position requires a combination of analytical thinking and hands-on collaboration with our manufacturing, aerodynamics, and testing teams to transition designs from concepts to tangible flight hardware.