110 mechanical engineer senior jobs found

Company Description: Critical Energy is an innovative, early-stage, venture-backed cleantech company on a mission to accelerate the global energy transition through abundant, low-cost clean energy. Founded by an ex-SpaceX engineer, Critical Energy designs and manufactures factory-built, modular power plants. These rapidly deployable systems convert heat into electricity using a closed-loop thermodynamic cycle and can be installed in just weeks. Critical Energy's technology delivers high-efficiency, 24/7 power for geothermal applications and waste heat recovery (including from data center gas turbines), making clean energy practical and cost-effective for demanding sectors like AI hyperscalers and data centers. Backed by top climate and technology investors, Critical Energy is scaling rapidly. Our Mission: To build an abundant, low-cost, 100% clean energy future through groundbreaking geothermal innovation. We are a team of passionate engineers, designers, and visionaries...

TKDA is a 100% employee-owned engineering, architecture, and design firm. We are expanding our presence in California and across the West Coast and are seeking a seller-doer Project Manager / Senior Mechanical Engineer/ Regional Client Service Lead to help lead and grow our engineering practice while managing client relationships and projects. The individual selected for this position will be responsible for providing technical oversight and project leadership in the riverside office, as well as contributing significantly to the growth of engineering services within California. Additional responsibilities include working with our national market leads and regional Vice President to develop new client relationships, particularly within the manufacturing and food and beverage sectors and expand existing accounts in California. Areas of technical expertise shall be relevant to mechanical design include HVAC, plumbing, and associated facility systems. Although engineering expertise is...

Job ID: 113496 DRS Daylight Solutions business provides industry-changing mid-infrared laser light technology for government and commercial markets, including: defense and security; life sciences; and industrial process control. As a mid-IR technology pioneer, Daylight Solutions has delivered more mid-IR systems to more applications world-wide than any other company. Job Summary The Senior Mechanical Engineer at Daylight will be responsible for supporting the design and analysis of lasers, robotics, tooling and fixtures. They should have a strong understanding of robust opto-mechanical design practices including precision mechanism, kinematics, lasers, and thermal control. They will support the design, analysis, documentation and testing of optical/laser products, systems, and/or subsystems. Working with a multi-disciplinary design team, they will execute on optical and mechanical modeling, prototyping, calculations, FEA, and testing. The successful candidate would be...

Job Summary: The Senior Mechanical Engineer (HVAC) is responsible for the overall evaluation, design, research, building, testing, and improving of mechanical and electrical systems. Responsibilities include using CAD software and other technical tools and processes to produce detailed designs, collaborating with other professionals and functions to ensure designs are successful, and ensuring all projects remain within budgetary and time constraints. Duties and Responsibilities: Collaborate with clients and other team members to determine project scope. Collaborate with internal teams to create design sketches, layouts, and plans. Use computer-assisted design (CAD) software to create preliminary and detailed drawings of the product. Study the test data and make comparisons with similar designs. Perform building system analysis and design. Apply mechanical engineering theory and adhere to codes. Address conditions and challenges encountered at job sites. Ensure plans and...

ABOUT ROCKET LAB Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more - all with the goal of opening access space. The rockets and satellites we build, and launch enable some of the most ambitious and vital space missions globally, supporting scientific exploration, Earth observation and missions to combat climate change, national security, and exciting new technology demonstrations. Our Electron rocket has become the second most frequently launched U.S. rocket annually and has delivered more than 230 satellites to orbit, all while we work to develop Neutron, our upcoming medium-lift, reusable launch vehicle for larger constellation deployment. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used...

GROW WITH US AND STAY EXTRAORDINARY: Launch your career to new heights with Innoflight-one of San Diego's fastest-growing Aerospace and Defense innovators. Here, visionary minds engineer the future of space technology through pioneering, compact, and cyber-secure solutions. From software-defined radios to cutting-edge cryptographic systems and avionics, everything we build powers the next era of New Space. Join our small, agile, and mission-driven team where your work has real impact and your growth has no limits. We're not just reaching for the stars-we're engineering them. Let's innovate the infinite, together. A DAY IN THE LIFE: As a Senior Mechanical Engineer I at Innoflight, you will serve as a principal-level contributor providing technical leadership for the design, analysis, and integration of complex mechanical systems for aerospace and spaceflight applications. You will drive system-level solutions across multiple programs, resolve challenging engineering problems,...

Fresh Consulting is a design-led, software development and hardware engineering company, offering end-to-end digital services to help companies innovate. We bring together amazing UX designers, sophisticated developers, digital strategists, and top-notch engineers to help companies create fresh experiences that connect humans, systems, and machines. We've been growing fast and need someone to help us continue to manage the delivery of high-quality work in a fast-paced environment. See more at freshconsulting.com Visit freshconsulting.com/portfolio to see our project work across several industries. View and apply to all jobs - https://freshconsulting.applytojob.com/apply/ or visit freshconsulting.com/careers Title: Senior Mechanical Engineer Location: Onsite in Sunnyvale, CA Benefits: Employee benefits at 100% including Medical, PTO, Holiday Pay, 401K Plan and much more! Hours: Minimum 40 Hours/Week Job Description Lead exploration, prototyping, maturing and implementation of...

Fulfil is a well-funded, rapidly growing, and inclusive company that has developed a custom automation robotics system to pick and pack online orders of groceries and other consumables, bringing delight and a value proposition to consumers that doesn't exist today. Additionally, its unique design and technology is purpose-built to solve today's environmental problems in the world's food supply chain. Founded by a team with previous startup success and backed by top-tier VCs, we are committed to reducing waste, improving environmental impact, and reducing emissions with truly new technology. Our first commercial product launch went live in 2024, we deployed more in 2025 and are in line for even more in 2026. We can't do it alone -- we're seeking curious, capable, passionate team members motivated by the opportunity to create lasting impact on the world through their work. This role offers ample growth opportunities while working side-by-side with an impassioned, multi-disciplinary...

SENIOR MECHANICAL ENGINEER Mesh Optical Technologies was founded on the belief that optical photons will be at the center of advanced technologies in the coming century. Making advanced technology ubiquitous means building at scale, and that's exactly what we're doing at Mesh. We are seeking a Senior Mechanical Engineer to lead development of major mechanical subsystems across our optical hardware platform. This is a senior individual contributor role reserved for engineers who demonstrate exceptional technical depth, ownership, and execution capability. You will independently drive complex mechanical challenges from first principles through production ramp, influencing subsystem architecture and ensuring performance, reliability, and manufacturability. Senior Mechanical Engineers at Mesh are trusted to solve ambiguous, high-impact problems and set the technical standard for mechanical design within their scope. RESPONSIBILITIES: Independently own mechanical development of...

U.S. Citizenship is Required. Ability to qualify for a US Department of Defense Top Secret security clearance required. Candidate must be SAP and SCI program eligible. This is an on-site position located in Goleta, CA. Toyon Research Corporation is an industry leader in the areas of complex space and missile systems analysis, aerothermodynamics, payload design and development, and ground and flight testing. Our Aerospace Systems Group provides innovative technical solutions to support aerospace programs for the Department of Defense (DoD) and their agencies. We are seeking a Senior Mechanical Engineer to lead development of advanced electro-mechanical designs from R&D to production. Responsibilities Perform design, development, and testing of mechanical systems for space applications Collaborate with the Program Manager to define project objectives, timelines, and deliverables Lead multidisciplinary teams to optimize system performance and reliability Define system...

At Vast, our mission is to contribute to a future where billions of people are living and thriving in space. Vast is developing next-generation space stations to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. Using an incremental, hardware-rich and low-cost approach, Vast is rapidly developing its multi-module Haven Station. Haven Demo's 2025 success made Vast the only operational commercial space station company to fly and operate its own spacecraft. Next, Haven-1 is expected to become the world's first commercial space station when it launches, followed by additional Haven modules to enable permanent human presence by 2030. Our team is all-in, committed to executing our mission safely and on time. If you want to work with the most talented people on Earth furthering space exploration for humanity, come join us....

About Quartus Quartus Engineering Incorporated (www.quartus.com) is a leading provider of engineering services and integrated hardware solutions for a wide range of clients and industries. We employ advanced computer-aided engineering tools in the areas of optics, structural, thermal, and coupled analyses. We couple our engineering analysis capabilities with design, prototype, integration and test capabilities to create solutions for our clients that are of extraordinary value. What will you do? As an Opto-Mechanical Senior Engineer in our Semiconductor sector, you will design and develop robust mechanics for high performance optical systems in challenging environments. You will work as part of a team of creative cross-disciplinary engineers to meet project and customer requirements and gain exposure to a wide variety of optical systems from non-contact optical metrology to industrial automation and everything in between. At Quartus, you will be involved in the entire project...

Who we are Neros is a defense technology company rebuilding America's drone industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built at massive scale. Our team culture is fast, hands-on, and obsessed with closing the gap between design and deployment. As drones transform the character of warfare, Neros is delivering the systems the West needs to compete on the modern battlefield and deter the adversaries of democracy. We're hiring engineers, operators, and builders who want to move fast, take on extreme ownership, and get capability into the hands of warfighters in months, not years. What you will be doing As a Senior Mechanical Engineer at Neros, you will own key components and subsystems within our products, starting from the conceptual design phase all the way through mass production. This is a dynamic and exciting role at a rapidly growing startup and presents an opportunity to be a...

As a team, we've launched five satellites into orbit, signed ten commercial deals worth over $1 billion in revenue, raised over $750 million from top global investors, and recruited a team of over 400 world-class engineers. We all work out of our (legendary) San Francisco office, which was once used to build ships during the World Wars. Our satellites, which operate from geostationary orbit (GEO), weigh only 400 kg and utilize a proprietary software-defined radio payload. Each satellite can connect over two million people, and we're very excited for the impact we'll soon have in the Philippines, Mexico, and more! Backed by substantial funding and a passionate, collaborative team, we offer a rewarding work environment where you'll learn and make a significant impact, no matter where you are in your career. Senior Mechanical Engineer As an Astranis Senior Mechanical Engineer you will own the complete lifecycle of various subsystems on our spacecraft. Whether it is incremental...

**Applicants must be U.S. Citizens or U.S. Permanent Residents (Green Card holders) to meet customer and regulatory requirements** Who We Are We are pioneering modular motion technologies to power the next generation of innovation for Industrial, Aerospace and Defense. If you're excited about disrupting legacy industries, and passionate about motor control technology, let's chat! We are at the forefront of innovation, crafting exclusive motion control components that propel the industrial, aerospace, and defense sectors into the future. A couple other things: We are open to relocating you We have great benefits We are well funded, and already generating revenue We are located in beautiful Torrance, CA and just moved into a new large hangar facility What you'll do: We are seeking a versatile, high-impact Engineer to lead the development of mission-critical hardware. This is a "full-lifecycle" role where you will own everything from the initial conversion of ambiguous...

About Brelle "Energy for what moves us" defines our mission at Brelle. We develop frontier technology that pushes what's possible in electrified performance. Based in California, Brelle engineers next-generation platforms for supercars and superbikes, working alongside leading high-performance brands across the US and Europe. Our innovations are built on a novel pack architecture, a full-stack software platform, and an advanced approach to automated manufacturing. Joining the team means working on making electric vehicles-on the road and on the racetrack-lighter, more engaging, safer, and capable of charging in minutes. Our engineering teams are structured like small Skunkworks teams - nimble, cross-functional, and technical. Engineers are encouraged to explore new concepts and materials and expected to rapidly go from concept idea to prototype. Brelle engineers are given a high level of autonomy to develop and release their parts across programs. Role Responsibilities...

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge. For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses. These buses hold the payloads of our customers and are flown on launch vehicles. Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society: ranging from earth observation to communications and more. We'd love for you to join us on our mission of providing humankind access to the galaxy beyond our planet. About the Role Apex is seeking a skilled Mechanical Design Engineer to join our satellite engineering team. In this...

Company Overview Imagine a piloted air taxi that takes off vertically, then quietly carries you and your fellow passengers over the congested city streets below, enabling you to spend more time with the people and places that matter most. At Joby, we've been working to make that dream a reality since 2009 and we're now in the final stages of certifying our aircraft with the FAA. With plans to launch our aircraft in the US and Dubai, we're now scaling manufacturing and preparing for the launch of our commercial service. Overview We are seeking a Manufacturing Engineer to support our R&D-focused machine shop, weld shop, and waterjet shop , which delivers rapid-turn metal parts for prototype aircraft, flight hardware, test hardware, tooling, and specialized equipment. This role works directly with internal engineering teams and shop personnel to translate incomplete or evolving engineering definitions into manufacturable designs. The Manufacturing Engineer will play a...