Mechanical Engineer Internship

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2200 Mechanical Engineering Intern Simi Valley, CA, US

3 days ago Requisition

Salary Range: $28.00 To $35.00 Hourly

Job Title:Mechanical Engineer Intern

Job Type: Winter 2027 - Internship

Job Location:Simi Valley, CA (This position is 100% onsite)

Business Unit: Space Vector

Schedule:9/80:Employees work 9 out of every
14 days – totaling 80 hours worked – and have every other Friday off.

Fisica, Inc. is a premier manufacturer of advanced defense products, specializing in the design and production of airborne and ground-based antennas, as well as cutting-edge electromagnetic systems and simulators. Headquartered in San Leandro, California, with additional operations in Simi Valley, Fisica plays a vital role as a trusted partner to leading defense primes and the U.S. Department of Defense.

Our company operates as
- ATI, Randtron, Datron and Space Vector
—each bringing deep expertise and innovation to the defense sector. Led by a seasoned management team, Fisica is committed to excellence in engineering, manufacturing, and mission-critical solutions that enhance national security.

At Fisica, we foster a strong, collaborative work culture that values individual contributions and empowers our employees. Our commitment to innovation, integrity, and teamwork makes us a leader in the defense industry and an exceptional place to build a career.

Overall

Summary:

We are seeking a motivated and hands-on Mechanical Engineering Intern to join our dynamic engineering team for the Summer of 2026. This internship offers a unique opportunity to apply classroom knowledge to real-world projects, work alongside experienced engineers, and gain invaluable industry experience in the aerospace and defense sector. The ideal candidate has a basic understanding of mechanical and/or electro-mechanical disciplines and is eager to learn in a fast-paced, collaborative environment.

The internship will take place in the summer of 2026 with flexibility for a May or June start time.

As a Mechanical Engineering Intern, you will work under the guidance of a mentor and assist engineering teams with a variety of tasks. Your responsibilities may include:

• Participate in the design, development, and analysis of mechanical components and systems for aerospace applications, including high-energy pulsed power systems, large ground-based satellite antennas, military aircraft antennas, and/or space batteries systems.
• Create and modify 3D CAD models and generate technical drawings in accordance with industry drafting standards.
• Participate in prototype fabrication, assembly, and testing.
• Perform laboratory activities including test planning, execution, data acquisition, and analysis.
• Perform basic engineering calculations (structural and thermal analysis) using hand-calcs and/or simulation tools to support design efforts.
• Collaborate with other functional teams (electrical, physics, manufacturing) on design, research, and development projects.
• Document design progress, test results, and engineering processes through technical reports and presentations.
• In-Office Work Required.

Education and Experience

Required:

• Candidates must be currently pursuing a bachelor’s degree in mechanical engineering, aerospace engineering, or a related technical field.
• Minimum GPA of 3.0.
• A basic understanding of fundamental mechanical engineering principles.
• Basic proficiency with 3D CAD software.
• Enjoy hands-on mechanical work and a willingness to work in both an office and R&D lab environment.
• Strong problem-solving abilities, attention to detail, and an inquisitive nature.
• Excellent written and…