Average salary: $68,028 /yearly

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  •  ...unrealistic expectations. We need dedicated engineers to burn down risk and improve...  ...with extreme practicality, keep reading! Mechanical Engineers at Zipline go deep in their area...  ...much more. What You'll Do Mechanical interns can own a variety of big problems... 
    Internship
    Full time
    Work at office
    Local area
    Flexible hours

    Zipline

    San Francisco, CA
    9 days ago
  •  ...millions from top-tier investors and staffed by leading engineers, Etched is redefining the infrastructure layer for the...  ...fastest growing industry in history. Job Summary Our mechanical/thermal engineering interns will work within the mechanical and thermal engineering... 
    Internship
    Summer work
    Summer internship
    Work at office
    Relocation

    Etched

    San Jose, CA
    6 days ago
  • $30 per hour

     ...its Allies a definitive edge and deter future conflicts. Fall 2026 Mechanical Engineering Co-Op Join us for a dynamic, hands-on experience developing next-generation missile systems. As an intern, you'll contribute directly to the design, testing, and integration... 
    Internship
    Hourly pay
    Permanent employment
    Temporary work
    Local area
    Immediate start
    Relocation

    Castelion Corporation

    Torrance, CA
    5 days ago
  •  ...Job Description Job Description Design West Technologies Inc. of Tustin, CA has an immediate need for a Mechanical-Engineering Intern for Summer 2026. The successful candidate will be responsible for providing support to R&D projects for the Department of Defense... 
    Internship
    Summer work
    Work at office
    Immediate start

    Design West Technologies, Inc.

    Tustin, CA
    3 days ago
  •  ...Job Description Job Description Title: Mechanical MEP Engineer Location: Miami, FL or Omaha, NE or New York, NY Company: Schnackel...  ...Participate in meetings and conference calls with clients and the internal team when necessary. Use AutoCAD/Revit and other... 
    Internship
    Work at office

    Schnackel Engineers Inc

    Pasadena, CA
    16 days ago
  • $22 - $33 per hour

     ...A high-speed aircraft manufacturer is seeking an intern in mechanical engineering to join the Fluids Team in Los Angeles. Responsibilities include structural design for aircraft subsystems, performing analyses, and collaborating with various teams. Candidates must be... 
    Internship
    Hourly pay

    Ring

    Los Angeles, CA
    2 days ago
  • $20.5 - $27 per hour

    Job Summary CalPortland is seeking a summer intern for the Oro Grande cement plant. This internship is ideal for a student interested in mechanical engineering. The intern will have the opportunity to work with the plants mechanical/maintenance department. This intern will... 
    Internship
    Summer internship
    Work at office
    Flexible hours

    CalPortland

    Oro Grande, CA
    5 days ago
  • $22 - $33 per hour

     ...A high-speed aircraft manufacturer in Los Angeles is seeking a Mechanical Engineering Intern to join their Fluids Team. The intern will engage in structural design for hydraulic and fuel systems of hypersonic aircraft, perform analyses using FEA, and collaborate cross-... 
    Internship
    Hourly pay

    Hermeus

    Los Angeles, CA
    1 day ago
  •  ...Clarita, California, is looking for a Manufacturing & Test Engineer Intern to gain hands-on experience in the aerospace industry. The role...  ...professionals. Candidates should be juniors or seniors in Mechanical or Electrical Engineering programs, proficient in CAD and Microsoft... 
    Internship
    Work at office

    ITT Inc. - English US

    Santa Clarita, CA
    1 day ago
  • An innovative robotics firm in San Francisco is seeking a Mechanical Engineering intern focused on designing and improving robotic hands. Responsibilities include hands-on design work, conducting engineering analysis, and collaborating on rapid prototyping. Ideal candidates... 
    Internship

    Foundation Robotics Labs Inc.

    San Francisco, CA
    5 days ago
  • $70.4k

    Second Order Effects, Inc in El Segundo, California is looking for a Mechanical Engineering Intern for Fall 2026. In this role, you will engage in designing, developing, and testing mechanical systems for customers, working closely with a mentor throughout your internship... 
    Internship
    Flexible hours

    Second Order Effects, Inc

    El Segundo, CA
    4 days ago
  • $140k - $160k

     ...research into real-world, safety-critical systems. Senior Engineer, Mechanical Engineering Implantable Neuroelectronics Team (IRTU)...  ...the implantable device, including enclosures, feedthroughs, internal component packaging, and structural interfaces. • Drive miniaturization... 
    Internship
    Full time
    Contract work
    Temporary work
    Flexible hours

    Synchron Inc.

    San Diego, CA
    14 days ago
  •  ...Morgan Hill is seeking a Summer 2025 Microelectronics Process Engineer Intern. This part-time internship offers a hands-on opportunity to...  .... The ideal candidate is an undergraduate enrolled in a Mechanical Engineering program or equivalent with knowledge of material... 
    Internship
    Part time
    Summer work
    Summer internship
    Monday to Thursday

    Amtech Microelectronics Inc

    Morgan Hill, CA
    1 day ago
  • $25 per hour

     ...Intern Program Work and train with the industry's finest professionals! FlatironDragados' Intern Program provides challenging...  ...work opportunities for college students majoring in Civil Engineering, Mechanical Engineering and Construction Management. What You Will Be Doing... 
    Internship
    Contract work
    For subcontractor

    FD.io

    San Diego, CA
    1 day ago
  • $29 per hour

    Mechanical Engineer Intern (Fall 2026) Internships at Astranis typically last twelve weeks and are hourly roles designed for students currently enrolled at a four‑year university. As an Intern, you will be given an opportunity to work on hard problems and contribute to... 
    Internship
    Hourly pay
    Permanent employment

    Pow.bio

    San Francisco, CA
    1 day ago
  • $28 per hour

     ...been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope. As a Mechanical Engineering Intern based at Rocket Lab's site in Long Beach, California, you will have the opportunity to support the design, development,... 
    Internship
    Hourly pay
    Permanent employment
    Full time
    Local area
    Relocation
    Flexible hours

    Rocket Lab Corporation

    Long Beach, CA
    12 days ago
  • $105k - $126k

    A semiconductor startup in San Francisco is seeking full-stack Mechanical Engineering Interns for the fall term. This role involves designing and building semiconductor fabrication equipment, providing hands-on experience and exposure to interdisciplinary engineering projects... 
    Internship

    Atomic Semi

    San Francisco, CA
    4 days ago
  • Astranis is seeking a Thermal Engineer Intern for Fall 2026. The intern will work on designing and testing satellite hardware/software as...  ...team. Ideal candidates are pursuing a B.S. or M.S. in mechanical or aerospace engineering. Responsibilities include thermal analysis... 
    Internship
    Hourly pay

    Pow.bio

    San Francisco, CA
    2 days ago
  • $29 per hour

    Pow.bio is looking for a CAD Engineer/Librarian Intern for Fall 2026 in San Francisco, California. This internship offers a chance to work on...  ...Candidates should hold a B.S. degree or pursue an M.S. in mechanical or aerospace engineering. The role emphasizes hands-on hardware... 
    Internship
    Hourly pay
    Permanent employment

    Pow.bio

    San Francisco, CA
    1 day ago
  • $33 per hour

     ...A leading space technology company in El Segundo, California is looking for a Mechanical Engineering Intern. This role offers the chance to work on critical spaceflight hardware and contribute to impactful projects in a collaborative environment. Ideal candidates are currently... 
    Internship
    Hourly pay

    Varda Space Industries

    El Segundo, CA
    1 day ago
  • $20 - $45 per hour

    Space Kinetic Corp. is seeking a SETA Engineering Intern focused on mechanical engineering and aerospace research. The intern will support research activities, perform analyses, and assist with engineering documentation and presentations. The ideal candidate is currently... 
    Internship
    Hourly pay

    Space Kinetic Corp.

    Los Angeles, CA
    4 days ago
  • Amphenol Corporation is seeking a Field Sales Engineer Intern for the 2026 Summer Internship Program in Santa Clara, CA. As an intern, you...  .... Ideal candidates are pursuing a Bachelor's degree in Mechanical or Electrical Engineering. Knowledge of the interconnect solutions... 
    Internship
    Full time
    Summer work
    Summer internship

    Amphenol Corporation

    Santa Clara, CA
    1 day ago
  •  ...environments. Our robots operate in production settings, which means mechanical design must be practical, manufacturable, and tightly...  ...as it does designing. About the role As a Mechanical Engineering Intern at Droyd, you’ll work hands-on on real robotic hardware. You... 
    Internship
    Full time

    Droyd

    San Francisco, CA
    4 days ago
  • $32.31 per hour

     ..., encourages diverse perspectives, develops our people, and fosters a collaborative team environment. Responsibilities As a Mechanical Engineer at a Marathon refinery, you will become familiar with industry codes and best practices, build critical thinking skills, and... 
    Internship
    Hourly pay
    Full time
    Summer work
    Local area
    Visa sponsorship
    Work visa

    Marathon Petroleum Corporation

    Martinez, CA
    4 days ago
  • $28 per hour

     ...Internship We’re looking for curious, driven, and hands‑on mechanical engineering students who want to learn from a team of engineers, builders...  ...redefining what’s possible in aviation. As a Mechanical Engineering Intern at Pyka, you’ll be embedded directly with the Mechanical... 
    Internship
    Hourly pay
    Summer internship

    Pyka

    Alameda, CA
    2 days ago
  • Mesh Optical in Gardena, California, is looking for an Associate Mechanical Engineer (Intern/Co-Op) to actively contribute to designing and building optical products. Interns will experience real engineering work alongside a multidisciplinary team. Ideal candidates are... 
    Internship
    Hourly pay

    Mesh Optical

    Gardena, CA
    1 day ago
  • Ideal Candidate: 2 YOE, hands on engineering, validation and qualifying equipment. Top 3 Must Have Skill Sets: Nice to have skills: (manager...  ...engineering design recommendations.; Skills: ? previous intern experience is a plus? experience with automation is a plus, as... 
    Internship

    ACL Digital

    Thousand Oaks, CA
    5 days ago
  • $25 - $35 per hour

     ...00 relocation stipend is available for interns currently residing more than 50 miles from...  ...We are currently seeking an ambitious engineering student to join our Component Test...  ...monitor test equipment to conduct tests on mechanical, electrical, and thermal components.... 
    Internship
    Hourly pay
    Full time
    Work at office
    Local area
    Relocation
    Work visa
    Relocation package

    Jobr

    Garden Grove, CA
    5 days ago
  • RBC in Torrance, California is offering an internship for students pursuing a Bachelor’s degree in Mechanical or Aerospace Engineering. Interns will engage in various responsibilities including creating tooling designs, summarizing test data, and troubleshooting processes... 
    Internship

    RBC

    Torrance, CA
    4 days ago
  • About the role We are seeking a motivated and detail-oriented Engineering Intern to support our hardware teams. This internship provides a...  ...opportunity to gain hands‑on experience in embedded systems, mechanics, systems engineering, software development, and propulsion... 
    Internship

    etc

    San Francisco, CA
    2 days ago