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Entry Level Mechanical Engineer Startup Jobs in California

Sunday Inc

Mechanical Engineer

Redwood City, CA · On-site

Strong collaboration skills and comfort working in fast-paced startup environments * Bachelor's degree in Mechanical Engineering or related field (Master's a plus, but not required) At Sunday ...

Mach Industries

Mechanical Engineer

Huntington Beach, CA · On-site

$105K - $180K/yr

With a workforce of approximately 220 employees , we operate with startup agility and ambition. Our ... The Role Mach Industries is seeking a Mechanical Engineer to join our team in designing ...

Peregrine Team

Mechanical Engineer I

Los Angeles, CA · On-site

We are seeking a Mechanical Engineer I to support the design, development, and testing of ... This is an entry-level role ideal for engineers early in their careers looking to gain hands-on ...

Aurelius Systems

Mechanical Engineer

San Francisco, CA · On-site

$130K - $180K/yr

Aurelius Systems is a VC backed defense tech startup building autonomous, edge deployed directed ... We need a Mechanical Engineer focused on design ruggedization across Archimedes - survivability ...

Monarch Quantum

Opto-Mechanical Engineer 2

San Diego, CA

$85K - $125K/yr

This is a dynamic, hands-on role for a self-starter who thrives in a fluid startup environment. You ... A bachelor's degree in mechanical engineering, Physics, or a related field. * A minimum of 2 years ...

Monarch Quantum

Opto-Mechanical Engineer 2

San Diego, CA · On-site

$85K - $125K/yr

This is a dynamic, hands-on role for a self-starter who thrives in a fluid startup environment. You ... A bachelor's degree in mechanical engineering, Physics, or a related field. * A minimum of 2 years ...

Monarch Quantum

Opto-Mechanical Engineer 2

San Diego, CA · On-site

$85K - $125K/yr

This is a dynamic, hands-on role for a self-starter who thrives in a fluid startup environment. You ... A bachelor's degree in mechanical engineering, Physics, or a related field. * A minimum of 2 years ...

K2 Space

Satellite Mechanical Engineer

Los Angeles, CA · On-site

$90K - $140K/yr

Bachelor's degree in mechanical, aerospace, or other relevant engineering discipline * Experience with CAD or FEA software packages * Experience with the practical application of GD&T * 2+ years of ...

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Entry Level Mechanical Engineer Startup information

What is the difference between Entry Level Mechanical Engineer Startup vs Entry Level Mechanical Engineer Corporate?

AspectEntry Level Mechanical Engineer StartupEntry Level Mechanical Engineer Corporate
Work EnvironmentFast-paced, dynamic, smaller teamsStructured, larger teams, established processes
ResponsibilitiesBroader scope, hands-on tasks, varied projectsSpecialized tasks, defined roles, routine projects
Workplace CultureFlexible, entrepreneurial, innovativeFormal, process-driven, hierarchical
Required CredentialsBachelor's in Mechanical Engineering, internship experienceBachelor's in Mechanical Engineering, internship experience

In summary, Entry Level Mechanical Engineer Startup roles typically involve a more versatile and fast-paced environment with broader responsibilities, while corporate roles offer structured processes and specialized tasks. Both require similar educational backgrounds and internships, but the work culture and scope differ significantly.

What are the most commonly searched types of Mechanical Engineer Startup jobs in California? The most popular types of Mechanical Engineer Startup jobs in California are:
What are popular job titles related to Entry Level Mechanical Engineer Startup jobs in California? For Entry Level Mechanical Engineer Startup jobs in California, the most frequently searched job titles are:
What job categories do people searching Entry Level Mechanical Engineer Startup jobs in California look for? The top searched job categories for Entry Level Mechanical Engineer Startup jobs in California are:
What cities in California are hiring for Entry Level Mechanical Engineer Startup jobs? Cities in California with the most Entry Level Mechanical Engineer Startup job openings:
Entry Level Mechanical Engineer Startup jobs near you
Infographic showing various Entry Level Mechanical Engineer Startup job openings in California as of May 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.
Mechanical Design Engineer, Energy Storage

Mechanical Design Engineer, Energy Storage

Redwood Materials

San Francisco, CA

Other

Posted 11 days ago

Job description

Mechanical Engineer, Energy Storage

You will be an early member of a new engineering team, taking a hands-on role in the design, development, and integration of a new high-power electromechanical product line at Redwood. This position starts as a senior individual contributor, where you'll be responsible for designing critical mechanical components and systems related to high power electronics, including thermal management, harnessing, enclosures, structures, and reliability while also collaborating closely with electrical, software, and systems engineering teams. As the product builds momentum, you will be instrumental in building and leading a mechanical engineering team, setting the foundation for scaling our product into high volume manufacturing. 

The ideal candidate is highly self-driven, adaptable to a startup environment, and eager to take on both technical and leadership challenges. You're a leader and a doer, excited about working in a dynamic, fast-paced setting, and want to shape the mechanical engineering function within a new department at Redwood. 

If necessary, we will adjust the job level to suit your experience and responsibilities. 

Responsibilities will include:  

  • Lead and execute the mechanical design and development of a high-volume, high-power energy conversion product from concept to deployment, including thermal management, authoring requirements, structural design, packaging/integration of power electronics, and integration with grid infrastructure
  • Act as the primary mechanical engineering expert, driving innovation and solving technical challenges at a large scale
  • Perform mechanical analysis (CFD, FEA, thermal, etc.) to validate designs and ensure performance under real-world conditions
  • Collaborate with electrical and systems engineers to ensure seamless integration of mechanical systems into the overall system architecture
  • Select materials and components, working closely with suppliers and vendors to ensure cost-effective, high-quality solutions
  • Be a hands-on engineering manager, accountable for project goals and timelines
  • Take a leadership role in recruiting, mentoring, and managing a high-performance mechanical engineering team
  • Contribute to a collaborative, fast-paced startup culture, where every team member plays a crucial role in achieving company milestones

 Desired Qualifications:  

  • BS orMS in Mechanical Engineering or a related field
  • 1-3 years of experience in mechanical engineering, with a strong focus in power conversion or energy storage products, ideally for mass production
  • An understanding of the relationship between high voltage electronics and the mechanical systems that support and surround them (e.g. insulation systems and thermal systems) 
  • Proven track record as a senior mechanical engineer, with hands-on design, prototyping, and launch experience in medium-to-high volume production (10,000 units/yr or higher)
  • Proficiency in CAD (e.g., SolidWorks) and analysis tools (CFD, FEA, etc.)
  • Experience developing tools, infrastructure and design practices for a growing team
  • Self-motivated, with the ability to manage your work in a startup environment, balancing multiple priorities and deadlines
  • Excellent communication and interpersonal skills, capable of building relationships with all levels of the organization and presenting to internal and external executives 
  • Passion for sustainability and making the world a better place!

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