Mechanical Engineer
Mariana Minerals
About Mariana Minerals Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making. The Role Mariana Minerals is looking for a highly motivated Mechanical Engineer to join our San Francisco Pilot Plant team. You will support the design, installation, and maintenance of first-of-its-kind refining processes for critical minerals. This position plays a critical role in bridging R&D and Operations, ensuring our equipment and work processes are robust, safe, cost-effective, and suitable for commercial production. What You'll Do Drive design, fabrication, installation, modification, startup, and commissioning of new equipment and pilot plant systems. Troubleshoot mechanical issues and implement practical solutions to maintain safe, reliable, and efficient plant operations. Work closely with process engineers and R&D scientists to translate process requirements into equipment modifications, mechanical designs, and plant improvements. Create and maintain engineering documentation, including P&IDs, process and control narratives, equipment specifications, drawings, CAD models, and equipment manuals. Identify opportunities to improve equipment reliability, maintainability, and operational performance Support the development of software and to help drive rapid equipment design, plant reliability, and safe operation Travel to Mariana sites to support new projects, start-up/commissioning, and troubleshooting initiatives What You'll Bring B.S., M.S., or PhD in Mechanical Engineering or a related field Experience in automated manufacturing, operations, process scale-up, or plant design in minerals processing, chemicals, specialty materials, oil & gas, or related industries Demonstrated experience driving equipment design, commissioning, operations, and reliability Ability to wear multiple hats and take on additional scope in areas such as process engineering, operations, maintenance, and project execution Strong troubleshooting and problem-solving skills in hands-on plant environments Strong commitment to Health, Safety, and Environmental compliance and mechanical integrity standards Excellent technical writing, communication, and teamwork skills Comfortable working in fast-paced environments and managing ambiguity Our culture is built on four principles: Everyone Gets Home Safe. We never put speed or cost ahead of people. Extreme Ownership. We take full responsibility for outcomes, relentlessly driving toward solutions. Engineer Out Requirements, then Automate. We simplify, optimize, and then automate for scale. Share Your Legos. We collaborate openly, share knowledge, and empower each other to build bigger, better solutions. Join us as we build the future of responsible mineral sourcing and supply! #J-18808-Ljbffr Mariana Minerals
$121.65k - $194.3k
...United States | San Francisco, CA, United StatesDepartment: Mechanical EngineeringBusiness Unit: ANA United StatesWork Type: HybridDate... ...the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.We are...SuggestedFull timePart timeWork at officeLocal area$71.68k - $146.79k
...with Syska Hennessy Group! As a global leader in consulting, engineering, and commissioning services, we specialize in MEP, information... ..., challenging, and rewarding career. We are looking for a Mechanical Engineer II - IV in our San Francisco, CA or Sacramento, CA offices...SuggestedWork at officeRemote workWork from homeFlexible hours$145k - $165k
...a team that’s setting the pace for responsible, transformative cloud infrastructure.Crusoe is seeking a talented and driven Mechanical Engineer with 2-5 years of experience to join our dynamic data center construction team. This role will be instrumental in ensuring the...SuggestedTemporary workFor contractors$115k - $150k
At Ouster, we build sensors and tools for engineers, roboticists, and researchers so they can make the world safer and more efficient.... ...and need your help!We are looking for a proactive and skilled Mechanical Engineer to develop mechanical systems for our current and future...SuggestedWork experience placementLocal area- Mechanical Engineer - Mission Critical Our Mechanical Engineering team is looking to add an experienced team member to our group of talented engineers. The Mechanical Engineer builds on foundational experience to take independent ownership of portions of project design,...SuggestedWork at officeWork from homeFlexible hours
- Mechanical Engineer - Mission CriticalOur Mechanical Engineering team is looking to add an experienced team member to our group of talented engineers. The Mechanical Engineer is a technical expert and design leader responsible for shaping high-performance, integrated mechanical...Work at officeWork from homeFlexible hours
- ...Gulfstream Strategic Placements, LLC seeks an HVAC Project Manager to lead large mechanical and plumbing projects in a dynamic, growth-focused firm. You will mentor project engineers and field crews, drive project estimation, and foster strong GC/Owner relationships to...
Gulfstream Strategic Placements, LLC
San Francisco, CA1 day ago - ...the industry's best investors, we move fast and build full-stack systems that matter. About the role We're looking for a Mechanical Engineer to be the backbone of how Gradient Robotics turns designs into working hardware. This is intentionally a hands-on ownership...Part timeInternshipWorldwide
Gradient Robotics
San Francisco, CA3 days ago $104.95k - $178.67k
...with Syska Hennessy Group. As a global leader in consulting, engineering, and commissioning services, we specialize in MEP, information... ...transportation, and commissioning. We are seeking a Senior Mechanical Engineer to join our team in San Francisco or Sacramento, CA....For contractorsWork from homeFlexible hours- ...become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction... ...better world. Join us.Job DescriptionAre you ready to lead the mechanical design of high-performance buildings that shape communities and...Work at officeLocal areaWorldwideFlexible hours
$155k - $190k
The Opportunity:Glumac, a Tetra Tech Company, is hiring a Senior Mechanical Engineer for our Mechanical Team in San Francisco, CA. This role is ideal for an experienced mechanical engineer with an established local client network who wants to lead meaningful, high-impact...Full timeFor contractorsLocal areaWorldwideVisa sponsorshipWork visa2 days per week$148k - $174k
...elevate design, push boundaries and create a more resilient future. The San Francisco office of SmithGroup is looking for a Senior Mechanical Engineer to join our team. Working with us, you will: Serve as the engineering leader through all stages of a project of any size and...For contractorsWork at officeLocal area$142.31k - $227.7k
...technologies. Known for developing the original TASER energy weapon, the Axon engineering team is tasked with continual excellence to keep the organization at the forefront of the market.Sr. Mechanical Design Engineers at Axon have full design ownership over next generation...Work experience placementFlexible hours$140k - $160k
...meaning - to Arup, to your career, to our members and to the clients and communities we serve. Our West Coast mechanical team is looking for a Senior Mechanical Engineer to join our multi-disciplinary team, with a focus on Life Science/Laboratory work. Arup is known for...Local areaRemote workFlexible hours$110k - $160k
...our communities, and our planet. If this sparks your interest, you’re in the right place.DLR Group has an opening for a Senior Mechanical Engineer.Locations: San Francisco, CAPosition SummaryAs a Senior Mechanical Engineer, you will be responsible for leading design of...Work at office- ...Mechanical Engineer Intern Join a team where engineering excellence drives opportunity. At Affiliated Engineers, Inc. (AEI), we bring together expertise and innovation to solve the most complex challenges. Since 1978, we've supported mission-driven organizations in...Summer workInternshipWork at officeFlexible hours
Affiliated Engineers, Inc
San Francisco, CA3 days ago - ...roof. Our robots operate in production settings, which means mechanical design must be practical, manufacturable, and tightly... ...testing as it does designing. About the Role As a Mechanical Engineering Intern at Droyd, you will work hands-on on real robotic...Full timePart timeInternship
Droyd Robotics
San Francisco, CA4 days ago - ...capabilities with the constraints of physical systems to improve peoples' lives. About the Role We are seeking a Senior Mechanical Engineer to lead the design, integration, and sustaining engineering of mechanical subsystems in robotic platforms. You will work...
OpenAI
San Francisco, CA1 day ago - ...Mechanical Engineering Intern Foundation is developing the future of general purpose robotics with the goal to address the labor shortage. Our mission is to create advanced robots that can operate in complex environments, reducing human risk in conflict zones and enhancing...Internship
Foundation
San Francisco, CA14 hours ago $150k - $275k
...Mechanical Engineer Substrate is addressing one of the most important technological problems facing the United States. At the intersection of advanced manufacturing and cutting-edge physics, we are developing technologies that will reshape the semiconductor industry...Full timeWork at officeLocal areaSubstrate Inc
San Francisco, CA1 day ago$90k - $226k
...revolutionize how humans interact with their digital world. Team Description: The Convoy team, a specialized group within the Robot Mechanical Engineering team, is working on developing a first-of-its-kind brain-controlled assistive robotic arm (ARA). Our focus is on developing...Full timeTemporary workInternshipFlexible hours- Mechanical Engineer - HealthcareOur Mechanical Engineering team is looking to add an experienced team member to our group of talented engineers. The Mechanical Engineer is a technical expert and high-level engineer who experienced in healthcare, responsible for technical...Work at officeWork from homeFlexible hours
- ...global scale. We haven’t publicly announced this specific project yet.We are seeking a highly capable, driven, and passionate mechanical engineer to design and develop high performance electric motors. The primary application of these motors is unmanned aerial vehicle (...Hourly payWork at officeLocal areaRemote workWork from homeFlexible hours3 days per week
- ...Senior Mechanical Engineer As a Senior Mechanical Engineer within the Mechanical Department, you will own the design and execution of complex mechanical subsystems that directly influence the economics, reliability, and scalability of our core technology. This role...Hourly payFull time
Heirloom Carbon
Brisbane, CA14 hours ago $155k - $175k
...ambitious goals. You'll get an opportunity to work on electro-mechanical systems in close collaboration with the electrical and... ...cost optimization Ideal Candidates Degree in Mechanical Engineering, Robotics, or Mechatronics with 3+ years of industry experience...Work at officeMytra
Brisbane, CA4 days ago- ...-level AI capabilities with the constraints of physical systems to improve peoples’ lives.About the RoleWe are seeking a Mechanical Design Engineer to lead the development of motor mechanical designs and prototype hardware for advanced robotic systems. You will own stator...
OpenAI
San Francisco, CA2 days ago - Mechanical (Plumbing, Piping, HVAC) Engineer, PE Currently looking for an experienced Mechanical (Plumbing, Piping, HVAC) Engineer, PE. We are a large, Mechanical Contractor that specializes in large Design-Build Plumbing/HVAC projects. The ideal candidate will hold a...For contractors
- ...right at home. If you're looking for something easier –this isn't it. The Role We're looking for an experienced Senior Mechanical Engineer to develop products from concept through to production. You'll be part of a small, mission-driven team and have significant ownership...Full timeWork at officeImmediate startWorldwideFlexible hoursNight shift
Eight Sleep
San Francisco, CA3 days ago $120k - $177k
...from robots to smart infrastructure - building a safer and more efficient world. The Industrial Autonomy Team is seeking a mechanical engineer to design and validate the rugged enclosures, mounts, thermal solutions, and structural hardware powering products for...Full timeContract workWork experience placementLocal areaOverseasOuster
San Francisco, CAa month ago- ...Mechanical / Payload Design Engineer (Space Systems) Your work could be operating on the lunar surface within the next 12-18 months. We’re supporting a pioneering aerospace team building next-generation payload systems for an upcoming lunar mission. This is a rare...Full timeSan Francisco, CAmore than 2 months ago
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