Electrical Engineer Intern

Job Title: Electrical Engineer Intern

Job Type: Summer 2026 Internship

Job Location: San Leandro, CA (This position is 100% onsite)

Business Unit: ATI

Schedule: 9/80: Employees work 9 out of every14 days – totaling 80 hours worked – and have every other Friday off.

About Fisica Inc.

Fisica ATI, in San Leandro, CA, develops cutting edge pulsed power systems, x-ray radiation sources, high-voltage switches & power-conditioning components. These core technologies are applied to build systems for flash x-ray imaging, electron beam sterilization, fusion, and simulating radiation environments, such as space or a nuclear blast, to study how electronics, optics, and materials are affected by x-ray radiation. The largest pulsed power systems built here produce millions of amps at millions of volts, delivered within hundreds of nanoseconds. Succeeding at these fast-paced, demanding conditions requires a talented team of curious, self-motivated, and passionate scientists, designers, technicians, and engineers. Fisica conducts both R&D and manufacturing to serve a mix of government and commercial customers.

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 pulsed power engineering intern to join our team and help with the design, development, and testing of pulsed power systems (see https://www.youtube.com/watch?v=p18VCY21OUI). The machines we work with generate x-rays to simulate radiation environments in well-shielded testing areas with nanosecond pulse durations. The ideal candidate enjoys hands-on work in a lab environment, data analysis, and spirited discussions on data interpretation with the team. As an intern you would work closely with experienced pulsed power scientists and technicians to learn how to safely contribute to design goals and develop an understanding of these high voltage systems. There will be opportunities to contribute to developed systems and designs of future systems.  Come help our team develop, build, test, and run the next generation of pulsed power systems! The internship will take place in the summer of 2026 with flexibility for a May or June start time.

Key Responsibilities:

• Contributes to the design, assembly, testing, and/or delivery of large, pulsed power machines.
• Apply standard electrical engineering, mechanical engineering, theories, and techniques.
• Perform circuit analysis & mechanical analysis to predict performance & validate test results.
• Work within small teams to conduct tests on pulsed power machines and radiation sources.
• Communicate results of experiments or simulations to the team.
• Detailed note taking and organization
• Follow safety protocols and take required safety training.

Education and Experience Required:

• Rising junior or senior seeking a bachelor’s degree in electrical engineering, physics, mechanical engineering, or related field.
• Detail oriented and good at both following and questioning directions.
• Driven by technical curiosity & an eagerness to learn, especially related to electrical/mechanical systems
• Effective communication in oral and written technical English.
• Physical abilities: lab work involving standing, bending, lifting, walking, reaching, etc.

• In-Office Work Required.

• The ability to obtain a future Security Clearance is required for the role. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Preferred Qualifications:

• Experience or interest in mechanical analysis, CAD, reading assembly drawings, and using basic tools
• Experience or interest in circuits, diagnostics, or related fields.
• Experience or interest in setting up & troubleshooting experimental equipment such as vacuum systems, data acquisition systems (sensors/monitors, oscilloscopes, delay generators etc.), & electrical systems.
• Experience or interest in data analysis of physical time series data
• Comfortable using basic hand/electrical tools and reading engineering drawings
• Enjoy figuring out how things work, taking things apart and putting back together.
• Experience with circuit simulation tools, programming, or scientific simulation software (i.e. Python, MATLAB, SPICE, CST).

Benefits & Opportunities:

• Gain real-world, impactful experience on cutting-edge aerospace and defense technology.
• Opportunity for mentorship from industry veterans and experts.
• Competitive compensation package and potential eligibility for full-time employment offers upon graduation.
• Exposure to a wide range of engineering processes from concept to production manufacturing and testing.

In compliance with pay transparency requirements, the salary range for this role is $28.00/hr. - $35.00/hr. This is not a guarantee of compensation or salary, as the final offer amount may vary based on factors including but not limited to experience and geographic location. 

EEO Statement

Fisica is proud to be an Equal Opportunity Employer. Fisica is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, military and veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. Fisica maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

 Fisica is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.