Mechanical Engineer at Atomic Semi | San Francisco

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.

About Atomic SemiAtomic Semi is pioneering the creation of a compact and rapid semiconductor fabrication facility.Our vision leverages contemporary technology and innovative simplifications to realize this goal. By developing our own tools, we aim for swift iterations and enhancements.We are assembling a small cadre of outstanding, hands-on engineers across various disciplines including mechanical, electrical, hardware, computer science, and process engineering. Our ambition is to master the entire stack—from the atomic level to architectural designs. Our team is driven by optimism and a commitment to pushing the boundaries of technology.We embrace the philosophy that smaller, faster, and self-built solutions are superior.Our belief in our capabilities is unwavering; our lab is equipped with 3D printers, an array of sophisticated microscopes, e-beam writers, general fabrication tools, and we are ready to invent anything that we find lacking.Founded by Sam Zeloof and Jim Keller, Atomic Semi is led by pioneers in the semiconductor industry, with Sam recognized for producing chips in his garage, and Jim boasting a 40-year legacy of leadership in the field.About the TeamOur automation engineering team is tasked with developing robotic systems to efficiently produce semiconductor packaging devices. We engage in designing, prototyping, building our own fabrication equipment, and innovating novel manufacturing processes. Our specialized team, skilled in electrical, mechanical, physics, and chemistry, collaborates closely to achieve our objectives.About the RoleAs a Mechanical Engineer - Automation at Atomic Semi, you will be responsible for generating and prototyping robotic components and systems from the ground up. Your projects will encompass precision small motion manipulation, integrating automation into existing machines, and overseeing complete system development and implementation.

Join Atomic Semi as a Prototype MachinistAt Atomic Semi, we are revolutionizing the semiconductor industry by creating a small, agile fabrication facility powered by cutting-edge technology. Our vision is to innovate and enhance semiconductor production through our unique in-house tools and methodologies.We are assembling a dynamic team of skilled engineers from various disciplines, including mechanical, electrical, hardware, computer, and process engineering. We aim to master every aspect of the semiconductor stack—from the atomic level to overall architecture. Our optimistic approach drives us to continuously explore new technological frontiers.Join us at our San Francisco office and be part of a team that believes in the power of small and fast solutions. With advanced 3D printers, a diverse range of microscopes, e-beam writers, and general fabrication equipment, we are fully equipped to innovate. If something is missing, we will create it ourselves.Founded by visionary leaders Sam Zeloof and Jim Keller, we are on a mission to redefine semiconductor production.

About Atomic SemiAtomic Semi is innovating the semiconductor industry by creating a compact and efficient semiconductor fabrication facility.Leveraging existing technology with strategic simplifications, we are committed to developing our own tools to facilitate rapid iteration and enhancement.Our team comprises exceptional hands-on engineers specializing in mechanical, electrical, hardware, computer, and process engineering. We take pride in managing the entire stack—from atomic structures to architectural designs. Optimism fuels our ambition to continuously push technological boundaries.We believe that smaller, faster, and self-built solutions are key to success.Our lab is equipped with state-of-the-art 3D printers, a variety of advanced microscopes, e-beam writers, and general fabrication equipment. We are prepared to invent any missing tools as needed.Atomic Semi was founded by Sam Zeloof and Jim Keller, industry leaders with a track record of innovation and excellence in semiconductor technology.About the TeamOur software team is pivotal in ensuring the seamless operation of our fab, developing the code that controls, manages, automates, and orchestrates the hardware essential for chip production.About the RoleWe are on the lookout for a Rust Software Engineer to contribute to the development of next-generation high-performance tools for chip fabrication and design. Your work will integrate real-time collaboration, computational geometry, GPU-accelerated visualization, simulation, interactive editing, and data processing.This multifaceted, hands-on position will involve tasks ranging from low-level systems and data synchronization to high-performance rendering, creating rich UI/UX editing tools, and establishing distributed infrastructure. The software you develop will empower engineers to design and comprehend tangible physical systems.We welcome candidates across various experience levels—from outstanding early-career engineers to seasoned professionals. The key attribute we seek is a proven track record of creating real-world applications and a passion for technological innovation.

Join Atomic SemiAt Atomic Semi, we are on a mission to revolutionize the semiconductor industry by creating an agile, state-of-the-art semiconductor fabrication facility.Harnessing the power of modern technology and innovative simplifications, we are dedicated to building our own tools for rapid iteration and enhancement.Our dynamic and collaborative team consists of top-notch engineers specializing in various domains such as mechanical, electrical, hardware, and computer engineering. We embrace the philosophy that we can manage everything from atomic elements to architectural designs.With a focus on quality and speed, we believe that smaller and faster is always better. We are committed to inventing solutions that meet our unique requirements, using a range of advanced technologies including 3D printers, sophisticated microscopes, e-beam writers, and a full spectrum of fabrication equipment.Founded by industry visionaries Sam Zeloof and Jim Keller, we are driven by a passion for innovation and excellence.Role OverviewAs a Fullstack Software Engineer, you will play a crucial role in developing our primary web application that operates the fab. Your focus will be on creating user-friendly features that empower process engineers to seamlessly interact with hardware, workflows, and data.

Atomic Semi builds compact, high-speed semiconductor fabrication facilities in San Francisco. The team brings together engineers from mechanical, electrical, hardware, computer, and process backgrounds, all focused on refining technologies and processes for rapid iteration and improvement. With advanced tools like 3D printers, microscopy instruments, e-beam writers, and a full suite of fabrication equipment, Atomic Semi emphasizes hands-on problem solving and continuous development. The company was founded by Sam Zeloof and Jim Keller, both recognized for their deep expertise in semiconductor technology. Role overview The Office Coordinator plays a central role in keeping Atomic Semi’s San Francisco office running efficiently. This person supports daily operations, allowing engineers and staff to concentrate on their work. As the first point of contact, the coordinator helps create a welcoming and organized environment. Success in this role depends on strong multitasking, attention to detail, and organizational skills. Key responsibilities Manage front desk activities, greet visitors, coordinate calendars, and act as the main contact for vendors. Oversee office supplies and amenities, including placing grocery orders, organizing Monday breakfasts, weekly lunches, and handling regular restocking. Supervise the day porter and janitorial staff, set cleaning schedules, and address facility issues as they come up. Maintain an organized workspace to support productivity. Location This position is onsite at Atomic Semi’s San Francisco office.

About Atomic SemiAtomic Semi is on a mission to revolutionize semiconductor manufacturing with a compact, agile fabrication facility.Leveraging current technologies and innovative simplifications, we are developing our own tools to enhance rapid iteration and improvement.Our exceptional team of hands-on engineers spans various disciplines including mechanical, electrical, hardware, computer science, and process engineering. Together, we embrace the challenge of owning the entire stack from atoms to architecture. We are driven by optimism and a commitment to pushing the boundaries of technology.We firmly believe in the mantra: smaller is better, faster is better, and building it ourselves is better.Our lab is equipped with state-of-the-art 3D printers, a diverse array of microscopes, e-beam writers, and general fabrication tools. When faced with gaps, we invent solutions as we progress.Founded by Sam Zeloof and Jim Keller, Atomic Semi blends garage ingenuity with decades of semiconductor expertise.About the RoleAs a Business Operations Generalist, you will be pivotal in enhancing our operational framework by supporting diverse projects across all functions. Your role will involve daily ad hoc support for internal services and longer-term cross-functional initiatives with both internal and external stakeholders, all aimed at fostering the growth and operational excellence of Atomic.You will collaborate with various stakeholders to tackle complex challenges, create new processes, gather and interpret data, and empower others in similar endeavors. Success in this dynamic environment necessitates a proactive approach, adaptability, and an ability to navigate shifting priorities and open-ended challenges.Joining our small yet impactful Business Operations team, you will have the opportunity to make substantial contributions across multiple functions from the outset, extending beyond traditional operational roles. This position is ideal for someone eager to learn, thrive in a fast-paced setting, take ownership, and help lay the groundwork for a rapidly scaling company.

About Atomic SemiAtomic Semi is pioneering the development of a compact and agile semiconductor fabrication facility.With today’s technology, alongside a few innovative simplifications, we are capable of realizing this vision. We will create our own tools, allowing for rapid iterations and enhancements.Our goal is to assemble a small, exceptional team of hands-on engineers to drive this initiative forward. Our team is composed of experts in mechanical, electrical, hardware, computer, and process engineering. We will manage the entire stack, from atoms to architecture, with a forward-thinking approach that pushes the boundaries of technology.Our philosophy emphasizes that smaller, faster, and self-built systems are superior.We are confident that our team and lab can create anything we envision. Equipped with 3D printers, diverse microscopes, e-beam writers, and general fabrication tools, we are committed to inventing whatever tools we may need along the way.Founded by Sam Zeloof and Jim Keller, Atomic Semi combines Sam's garage chip-making prowess with Jim's extensive 40-year leadership in the semiconductor industry.About the RoleWe are in search of an Infrastructure & Site Reliability Engineer to design, construct, deploy, and oversee the on-premises backend infrastructure that drives our rapid semiconductor fabrication process.This multifaceted role encompasses all elements of backend infrastructure and services.Our infrastructure philosophy prioritizes minimalism, clarity, on-site operations, and proximity to hardware. Expect a focus on bare-metal Linux, systemd, and single-file binaries rather than extensive use of Docker, cloud services, or Kubernetes. Proficiency in Rust, Go, and Python will be beneficial.We welcome candidates from various experience levels—ranging from outstanding early-career engineers to seasoned professionals. We are not fixed on a specific background; what is paramount is your proven ability to build real systems, enthusiasm for hands-on engineering, and a strong display of engineering excellence. If you are passionate about performance engineering, developing complex features from the ground up, and swiftly mastering new domains, this is an exciting opportunity for you.A portfolio or GitHub account is generally required to apply: demonstrate the projects you’ve undertaken!

Join the Future with Atomic SemiAt Atomic Semi, we are pioneering the development of a compact and rapid semiconductor fabrication facility. Leveraging existing technologies and innovative simplifications, we aim to construct our own tools for swift iteration and enhancement.Our mission is supported by a small, exceptional team of hands-on engineers specializing in various fields including mechanical, electrical, hardware, computer engineering, and process design. Together, we take ownership of the entire stack, from atomic structures to overarching architectural designs. We are optimistic about technological advancements and are committed to pushing the boundaries of what's possible.We believe in the power of small, fast, and self-built solutions. Our state-of-the-art lab is equipped with 3D printers, diverse microscopes, e-beam writers, and general fabrication tools. If we find that something is missing, we’ll innovate and create it ourselves!Founded by Sam Zeloof and Jim Keller, Atomic Semi combines garage ingenuity with decades of semiconductor industry leadership.Open Invitation for Exceptional TalentWe are continuously on the lookout for remarkable individuals who can contribute to our full-stack product development, which encompasses numerous engineering disciplines. Here’s a glimpse of the areas we are involved in:Mechanical systems (high precision mechanical design, control systems, fluids, temperature & vibration control, optics)Electrical systems (RF, high voltage, FPGAs)Software (firmware, low-latency controls, data analysis, robotics and automation)Nanofabrication (process engineering, chemistry, device physics, transistor modeling)Our pace is rapid, and our needs evolve quickly. If you believe you can help us build something extraordinary, we would love to hear from you!Life at Atomic SemiAs an early-stage hardware startup backed by solid funding and world-class advisors, we operate from our lab and office located in San Francisco, CA.

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.

About Atomic SemiAtomic Semi is at the forefront of advancing semiconductor manufacturing with a focus on building a compact, agile fabrication facility.Leveraging current technology and innovative simplifications, we are determined to create our own tools for rapid iteration and enhancement.Our exceptional team comprises a diverse array of engineers specializing in mechanical, electrical, hardware, computer, and process engineering. Together, we are committed to owning the entire stack from atomic structures to architectural designs. We thrive on optimism and are eager to push the boundaries of technological innovation.We believe in the motto: smaller is better, faster is better, and building it ourselves is better.Our lab is equipped with advanced 3D printers, an extensive selection of microscopes, e-beam writers, and general fabrication tools. If we identify any gaps, we will invent the necessary solutions.Founded by Sam Zeloof and Jim Keller, Atomic Semi is driven by a passion for innovation. Sam gained recognition for his garage-built chips, while Jim boasts over 40 years of leadership in the semiconductor sector.About the RoleWe are seeking enthusiastic Mechanical Engineering Interns for the upcoming fall term, commencing in September. The internship requires a commitment of 4 to 8 months. As we reconstruct the chip fabrication process from the ground up, you will engage in significant and meaningful projects. Our engineering endeavors span multiple disciplines including structures, optics, robotics, heat transfer, physics, and chemistry. As a startup, we provide interns with substantial ownership and critical missions.The ideal candidate will have practical experience in at least one of these domains and broad exposure to others. Our philosophy emphasizes rapid prototyping and testing—projects should be built and evaluated in days or weeks, not months. To apply, a portfolio showcasing your completed projects is required. If you have successfully delivered a medium-to-high complexity system through personal projects or prior internships, you would be an excellent fit for our team.

About Atomic SemiAtomic Semi is pioneering the development of a compact and rapid semiconductor fabrication facility.Utilizing current technologies and innovative simplifications, we aim to create our own tools, enabling swift iterations and continuous enhancements.Our team comprises exceptional, hands-on engineers across various disciplines—mechanical, electrical, hardware, computer, and process engineering. We are committed to owning our entire operational stack, from atomic structures to architectural designs. Our optimistic outlook drives us to push the boundaries of technology.We believe that smaller, faster solutions are superior, and that building our own tools is the best path forward.Equipped with advanced 3D printers, an extensive range of microscopes, e-beam writers, and general fabrication tools, we are ready to invent whatever is necessary throughout this journey.Founded by Sam Zeloof and Jim Keller, our vision is backed by Sam’s garage-chip manufacturing experience and Jim’s four decades of leadership in the semiconductor industry.About the RoleAs a Backend Infrastructure Engineer, you will develop the core systems that drive our fabrication products, with a focus on backend architecture, data models, and hardware integrations.

Join Us at Atomic Semi!Atomic Semi is revolutionizing the semiconductor industry by developing a compact and efficient semiconductor fabrication facility. With today's technology and innovative simplifications, we are poised to create tools that will allow us to iterate rapidly and enhance our processes.Our dedicated team of hands-on engineers spans various disciplines, including mechanical, electrical, hardware, computer, and process engineering. We pride ourselves on our ability to manage the entire stack—from atoms to architecture. Our optimistic outlook drives us to continually push the boundaries of technology.At Atomic, we believe that smaller and faster solutions are superior, and we are committed to building our own tools to achieve this vision. Our lab is equipped with state-of-the-art 3D printers, a diverse selection of microscopes, e-beam writers, and a range of fabrication equipment. If there's something we need, we'll invent it.Founded by renowned industry leaders Sam Zeloof and Jim Keller, Atomic Semi draws on decades of experience and innovation.

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.