Senior Software Engineer at Mechanize | San Francisco

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.

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.

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.

Role overview AECOM is hiring a Senior Mechanical Engineer in San Francisco. This role leads project work and collaborates with teams across disciplines. The focus: designing, developing, and implementing mechanical systems that support efficiency and sustainability goals.

ABOUT PAX At PAX, we are dedicated to transforming lives through outstanding consumer experiences. Our commitment to innovation, scientifically-backed quality, and award-winning design has established us as a leader in the industry for nearly two decades. Millions trust our high-performance products, which are crafted for precision, purity, and consistency. Our culture revolves around prioritizing people, making impactful contributions together, and enjoying the journey. We believe that exceptional products, a fulfilling employee experience, and robust operational rhythms are interconnected. PAX has garnered accolades for its brand, culture, and products from esteemed publications, including The New York Times’ Wirecutter, TIME, Fast Company, GQ, Gear Patrol, mg Magazine, and High Times. Furthermore, we are proud to be certified Plastic Negative across all product lines by rePurpose Global, ensuring that we remove twice as much plastic from nature as we use in our products. ROLE OVERVIEW As a Senior Mechanical Engineer reporting to the Director of Mechanical Engineering, you will spearhead the design of innovative, cost-effective, and reliable products that meet delivery schedules. You will also troubleshoot and enhance existing products while collaborating closely with engineering colleagues to devise optimal solutions for complex design, structural, thermal, and battery life challenges. Proficiency in sketching and prototyping new concepts, along with familiarity with engineering best practices, will be essential. You may also guide and oversee the work of junior team members. Our products are celebrated for their exquisite design, high quality, and reliability. Our Mechanical Engineers play a vital role in shaping the architecture and detailed design of all our products, working in tandem with the Hardware team to realize the product vision. This role is pivotal in leading the development of future innovations. Key Responsibilities: Collaborate with cross-functional teams to develop high-quality products that exceed customer expectations. Partner with Industrial Design to evaluate product features for manufacturability and recommend efficient processes and equipment. Lead the development of mechanical product architectures, assemblies/modules, parts, and accessories. Design detailed mechanical components, including complex assemblies and sub-systems. Conduct feasibility studies to ensure designs meet mechanical robustness, scheduling, and cost targets. Oversee both internal and external prototyping efforts. Facilitate design reviews and promote engineering best practices.

Join The Bot Company as a Mechanical EngineerAt The Bot Company, we are on a mission to create an innovative robot designed to enhance everyday life in homes around the world.Based in the vibrant city of San Francisco, our compact team of engineers, designers, and operators comes from esteemed organizations such as Tesla, Cruise, OpenAI, Google, and Pixar. With a proven track record of delivering products to hundreds of millions of users, we know how to craft exceptional products and experiences.Our streamlined team structure fosters quick decision-making and eliminates unnecessary bureaucracy. Every team member is a contributor with significant scope, ownership, and accountability, working collaboratively across multiple domains to drive rapid iteration and execution.Candidate ExpectationsIn all roles at The Bot Company, we seek candidates who display remarkable sharpness and the capacity to thrive in fast-paced, high-pressure environments. Candidates should demonstrate:Exceptional mental acuity: Quick thinkers who learn swiftly and can reason across diverse domains.Engineering curiosity: A natural inclination to explore and understand how systems function, even beyond one’s specialty.High performance mindset: The ability to excel amidst ambiguity and high demands.Role Overview: Mechanical EngineerAs a Mechanical Engineer, you will be responsible for designing the mechanical systems, structures, and mechanisms that bring our robots to life. This position is ideal for individuals with exceptional mechanical intuition, rapid prototyping skills, and a history of delivering reliable hardware at scale.

Join Gridware as a Mechanical Research Engineer, where your innovative spirit and engineering expertise will contribute to groundbreaking projects in the energy sector. You will be responsible for conducting research, developing prototypes, and collaborating with a team of skilled engineers to advance our technology solutions.

Join Crusoe as a Mechanical Engineer and play a pivotal role in designing innovative solutions that drive efficiency and sustainability in energy technology. In this position, you will collaborate with cross-functional teams to develop and optimize mechanical systems, ensuring peak performance and reliability.

Join the Sleep Fitness RevolutionAt Eight Sleep, we are dedicated to maximizing human potential through the power of optimal sleep. As the pioneering sleep fitness company, we are transforming the concept of restful sleep by developing cutting-edge hardware, software, and AI technologies that facilitate personalized, data-driven recovery experiences. Our innovative products enhance mental, physical, and emotional performance, making us the choice of high achievers, professional athletes, and health enthusiasts across over 30 countries.Recognized as one of Fast Company's Most Innovative Companies in 2019, 2022, and 2023, and honored twice in TIME's “Best Inventions of the Year,” we operate with a high-performance mindset: fast, focused, and dedicated to impactful results. We believe in continuous improvement—shipping products is just the beginning; we refine and enhance them obsessively to ensure our members sleep better and wake up stronger.Every position at Eight Sleep offers a unique opportunity to contribute to groundbreaking technology, collaborate with exceptional talent, and influence a future where sleep is a dynamic asset for improved living. If you're ready to leave the mundane behind and push the boundaries of innovation, this is your moment. Join us in leading the transformation of global sleep practices and unlocking human capabilities.High Standards, Unwavering CommitmentWe embrace intensity because our mission demands excellence. At Eight Sleep, we adopt the mentality of the world’s elite performers: focused, relentless, and striving to be at the peak of our craft. This is not a conventional 9-to-5 job. Our team is deeply committed, often dedicating over 60 hours a week—driven not by obligation but by our investment in our mission. We are here to innovate rapidly, push boundaries, and deliver uncompromising results. If you thrive in high-pressure environments and seek to engage in the most significant work of your career, you'll find your place here. If you're seeking a cushy role—this is not the one for you.The RoleWe are in search of a talented Staff Mechanical Engineer to spearhead new product development from concept to production. You will be part of a tight-knit, mission-driven team with considerable autonomy in decision-making. With our rapid growth, there are significant opportunities for career advancement.This role is based out of our San Francisco Office 5 days a week.

Be Part of the Team Revolutionizing Autonomy in ConstructionAt Bedrock Robotics, we are at the forefront of transitioning artificial intelligence from theoretical frameworks to practical applications. Our team consists of seasoned professionals who have been instrumental in launching Waymo, scaling Segment to a $3.2 billion acquisition, and driving Uber Freight to $5 billion in revenue. We are currently implementing autonomous systems on heavy construction machinery nationwide, expediting timelines for multi-billion dollar infrastructure projects while enhancing safety on job sites. With $350 million in funding, we are swiftly addressing the growing demand for housing, data centers, manufacturing facilities, and tackling the construction sector's labor shortages.This is where cutting-edge algorithms meet robust engineering. You will collaborate with experienced construction professionals and world-renowned engineers to tackle real-world challenges that simulations cannot address. If you're eager to leverage innovative technology to solve significant issues alongside a dedicated team, we would be thrilled to welcome you aboard.Job OverviewAs a Mechanical Systems Integration Engineer, your primary responsibility will be the physical integration of sensors, computational hardware, actuators, and auxiliary subsystems onto our next-generation autonomous construction machines. You will work collaboratively with electrical, software, manufacturing, operations, and supply chain teams to convert system-level requirements into robust mechanical designs optimized for scalability, reliability, manufacturability, industrial design, and operational efficiency in challenging real-world environments—enduring vibrations, shocks, dust, debris, and various weather conditions.Main ResponsibilitiesMechanical Integration Design: Create mounting brackets, enclosures, and structural interfaces for sensors (cameras, LiDAR, radar, IMUs), computational units, and ancillary hardware on vehicle platforms.3D CAD Design: Develop intricate part and assembly models utilizing Onshape, including GD&T-compliant drawings for fabrication and vendor sourcing.Routing & Packaging: Collaborate with cross-functional teams to determine physical routing paths for wire harnesses, fluid lines, and cooling components within constrained mechanical envelopes.Environmental Protection: Design and select suitable sealing, gasketing, and protective enclosures (IP-rated) to shield sensitive electronics from moisture, dust, and contamination.Prototype Build Support: Assist in the building and testing of prototypes to validate design assumptions and ensure functionality.

ABOUT US:At Astro Mechanica, we are pioneering the future of aerospace technology with a commitment to creating faster and more interconnected travel solutions. Our mission is to democratize high-speed flight, making supersonic travel not only flexible and accessible but also sustainable. We envision a world where rapid, on-demand global mobility is the norm for transporting people and goods. To bring this vision to life, we are fusing our advanced airframe and engine technologies, including our innovative Duality™ propulsion system, with a new operational framework that ensures supersonic transport is as efficient and economical as today’s commercial air travel. In the near term, our focus is on developing adaptable high-speed systems to bridge performance gaps for the United States government.WHO WE ARE:We are a dedicated team of passionate engineers entrenched in the aerospace sector. Our flat organizational structure encourages collaboration among generalists and specialists alike, fostering a culture where innovative ideas flourish. We operate at a rapid pace, driven by a commitment to building transformative technology in a pragmatic and skilled environment.WHO YOU ARE:Astro Mechanica is on the lookout for a seasoned Senior Mechanical Engineer who is ready to take ownership of hardware design from the conceptual phase through to production. The right candidate will possess a deep understanding of how their designs impact surrounding systems and will tackle technical challenges with a first-principles approach. Your contributions will directly influence the configuration and performance of our Duality™ engine.In this position, you will lead the journey of our cutting-edge jet engine and its subsystems from early prototypes to flight qualification, vehicle integration, and actual flight. You will embody the philosophy of testing as you fly.WHAT YOU’LL DO:Conduct design trade studies while considering system-level impacts.Complete detailed designs supported by structural, thermal, and fluid analyses.Lead design reviews and gather feedback from stakeholders.Build prototypes directly, design necessary tooling, and create work instructions.Perform hardware tests and analyze data to confirm compliance with requirements and performance metrics.Efficiently diagnose hardware issues and identify corrective actions.WHAT WE’RE LOOKING FOR:10+ years of hands-on experience with fluid dynamics and mechanical design in aerospace applications.

Join our innovative team at Physical Intelligence as a Mechanical Design Engineer. In this role, you will leverage your expertise in mechanical design to develop cutting-edge solutions that enhance our product offerings. Collaborating with cross-functional teams, you will be responsible for the design, analysis, and testing of mechanical systems, ensuring they meet our high standards of quality and performance.

Become a Catalyst for Sleep InnovationAt Eight Sleep, we are on a transformative journey to unlock human potential through revolutionary sleep solutions. As pioneers in the sleep fitness industry, we are redefining wellness by combining cutting-edge hardware, software, and artificial intelligence. Our mission is to empower individuals to achieve peak mental, physical, and emotional performance by turning sleep into a personalized, data-driven recovery experience. Trusted by elite athletes and health enthusiasts in over 30 countries, our innovations have been recognized by Fast Company as one of the Most Innovative Companies in 2019, 2022, and 2023, and by TIME as one of the “Best Inventions of the Year” twice. We operate as a high-performance team: fast, focused, and driven by meaningful impact. We don’t just deliver products; we continuously evolve, refine, and obsess over the details that enhance our members' sleep quality and overall vitality.Every position at Eight Sleep offers the opportunity to innovate at the forefront of technology, collaborate with top-tier talent, and contribute to a future where sleep is not merely a passive activity, but a powerful tool for improved living. If you're ready to step beyond the ordinary and are passionate about pushing the boundaries of what's possible, this is your chance to lead the change in how the world sleeps and thrives upon waking.Commitment to ExcellenceAt Eight Sleep, we embrace a culture of intensity because our mission demands it. We embody the mentality of the world’s top performers—relentless, focused, and striving to be the best in our field. This is not a typical 9-to-5 role; our team is dedicated, often contributing 60+ hours a week—not out of obligation, but out of passion. We are here to innovate swiftly, challenge limits, and deliver excellence without compromise. If you thrive in high-pressure environments and aspire to do the most impactful work of your career, you will feel right at home here. If you prefer an easier path—this isn’t the place for you. Your ResponsibilitiesWe seek an exceptional leader for our mechanical and product design engineering team based in San Francisco. In this role, you will spearhead the development of intricate electromechanical products, including our flagship offering, the Pod, along with an ambitious pipeline of innovative products yet to be realized. The ideal candidate will possess extensive experience in bringing successful products from concept to market. This position reports directly to the Chief Product Officer. This position requires full-time attendance at our San Francisco office, five days a week.

Join Syska Hennessy Group and watch your engineering visions become reality through landmark projects across the globe! As a renowned leader in consulting, engineering, and commissioning services, we focus on highly technical buildings and the intricate systems that power them. We are currently on the lookout for a Lead Mechanical Engineer to become an integral part of our team at our San Francisco, CA or Sacramento, CA office.In your role as Lead Mechanical Engineer, you will serve as the primary point of contact for our clients, contractors, architects, and project teams. You will oversee project assignments, manage teams, and ensure efficient coordination throughout the project lifecycle.Our vibrant work culture encourages professional growth, offering a supportive environment complemented by a diverse workforce. Enjoy competitive compensation, a flexible work schedule with Monday to Thursday in the office for 9 hours and Friday for 4 hours remotely, and engaging social events, making it the perfect setting for a fulfilling and challenging career. Experience in Mission Critical, Science + Technology, Healthcare, and Project Management is highly valued.

Join the dynamic team at DoorDash Labs, the forefront of innovation within DoorDash, dedicated to transforming last-mile logistics through cutting-edge automation and robotics. We are on the lookout for a passionate Senior Mechanical Engineer who will be instrumental in designing, developing, and validating mechanical systems for our advanced unmanned platforms. Ideal candidates will possess substantial experience in mechanical design, structural analysis, CAD, and rapid prototyping, with a history of delivering effective solutions in fast-paced production environments.

Join the Multiply Labs Team as a Mechanical Engineer!Multiply Labs, a groundbreaking startup located in San Francisco, California, is backed by elite investors such as Casdin Capital, Lux Capital, and Y Combinator. Our vision is to create the world's most advanced robotic systems to facilitate the manufacturing of life-saving therapies.We are at the forefront of transforming cell therapy production by innovating robotic technologies that automate and enhance the scalability of these critical medical treatments. Our solutions enable biopharmaceutical companies to efficiently produce cell therapies without extensive modifications to their existing processes, thereby lowering regulatory hurdles and costs. Traditional methods often exceed $1 million per patient—our robotics make these essential therapies more affordable and accessible.About the RoleAs a Mechanical Engineer within Multiply Labs, you will leverage your engineering acumen and leadership skills to design consumable components for complex automated machinery. Your responsibilities will encompass designing robotic cartridges, adapters, and single-use fluid transfer sets that facilitate robotic integration with standard consumables used in cell therapy manufacturing (e.g., fluid transfer bags, bioreactors, cell isolators, reagent vials). You will collaborate closely with a multi-disciplinary team of hardware and software engineers to develop both current and future generations of our robotic systems, overseeing everything from component selection to prototype development and production. Success in this role hinges on your ability to iterate and optimize designs through first-principle engineering methodologies. With multiple exciting projects at various stages of development, strong documentation and organizational skills will be essential for facilitating effective decision-making and project coordination.

Astranis is revolutionizing satellite communications by creating advanced satellites that operate at high orbits, thereby expanding humanity's capabilities within the solar system. Our satellites deliver dedicated, secure networks to a diverse range of sophisticated clients globally, including large enterprises, sovereign governments, and the US military. With five satellites currently in orbit and a robust pipeline of launches ahead, we are committed to fulfilling over $1 billion in commercial contracts.Astranis stands out as the premier satellite communications partner for clients demanding high standards in uptime, data security, network visibility, and bespoke solutions. Having raised over $750 million from prestigious investors such as Andreessen Horowitz, Blackrock, and Fidelity, our team of 450 engineers and entrepreneurs is dedicated to the design, construction, and operation of our satellites from our expansive 153,000 sq. ft. headquarters in Northern California.Senior Mechanical EngineerAs a Senior Mechanical Engineer at Astranis, you will take complete ownership of various subsystems throughout the lifecycle of our spacecraft. You will collaborate with multiple teams to realize both incremental improvements and the introduction of innovative systems.In addition to your individual contributions, you will also mentor and train junior mechanical engineers, fostering their development on various projects. A strong background in problem-solving, hands-on testing skills, and experience in spacecraft or aerospace engineering are essential for this role.

Meter seeks a Product Design Mechanical Engineer based in San Francisco. This position centers on designing and refining mechanical systems that shape the company’s product offerings. Role overview The engineer will work on both new and existing product designs, aiming to deliver mechanical solutions that address customer needs. Collaboration with other teams is a key part of the job, ensuring that mechanical components fit well within broader product goals. What you will do Create and improve mechanical systems for Meter’s products Work closely with cross-functional teams to align design efforts Focus on solutions that enhance customer experience and product performance Location This role is based in San Francisco.

Eight Sleep builds hardware, software, and AI solutions to help people recover better each night. The company’s products reach users in over 30 countries and have received recognition from Fast Company and TIME for innovation and design. Many athletes and health-focused individuals use Eight Sleep to improve their sleep and performance. The team works with urgency and precision, setting ambitious goals and dedicating significant time to reach them. This is an environment for those who thrive on high expectations and are motivated by meaningful, challenging work. Attention to detail and a drive for continuous improvement are valued here. Role overview The Director of Mechanical Engineering leads the mechanical and product design engineering team in San Francisco. This position oversees the development of complex electromechanical products, including the Pod and upcoming devices. The Director manages projects from initial concept through production and reports directly to the Chief Product Officer. This is a full-time, in-office role requiring onsite presence five days a week. What you will do Lead and mentor the mechanical and product design engineering team Manage end-to-end development of electromechanical products Oversee new product launches, from concept to production Collaborate closely with the Chief Product Officer and cross-functional teams Requirements Extensive experience guiding products from concept to launch Demonstrated leadership in mechanical or product design engineering Comfort working in a high-commitment, high-expectation setting Ability to work onsite in San Francisco five days a week