Systems Engineer Intern

Job Title: Systems Engineer/Integration and Test Intern

Job Type: Summer 2026 Internship

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

Business Unit: Datron

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

About Fisica Inc.

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 highly motivated Systems Engineer/ Integration and Test Intern to support the development, integration, and sustainment of ground-based systems or Battery Management systems for satellite and space communications. You will play a critical role in the architecture, design, implementation, and operations of ground station infrastructure supporting mission-critical applications. This internship will take place in the summer of 2026 with flexibility for a May or June start time.

Key Responsibilities

• Define system requirements and interfaces for ground station infrastructure, including antennas, RF systems, modems, and network elements.
• Define system requirements and interfaces for Battery Management Systems or Ground based stations.
• Develop Testing Scripts/Test Procedures for Ground Based Stations/Battery Management Systems
• Provide Testing Support for the test out of Ground Based Stations/Battery Management Systems
• Develop interface control documents (ICDs), systems specifications, and test plans.
• Coordinate with hardware and software engineers, program management, customers, and subcontractors.
• Troubleshoot system-level issues and support root cause analysis during integration and operations.
• Assist in performing link budget analysis, RF chain evaluations, and data flow assessments.
• Contribute to mission planning and ground system automation improvements.
• Support program milestones, design reviews (SRR, PDR, CDR), and delivery schedules.
• In-Office Work Required.
  
  

Education And Experience Required

• Achieving bachelor’s degree in systems engineering, electrical engineering, aerospace engineering, or a related field.
• Utilized system modeling tools (e.g., SysML, MATLAB, STK).
• Knowledge of electrical circuitry, test scripting, software languages, Python, C , C
• Excellent written and verbal communication skills.
• 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

• Familiarity with cloud-based ground systems (e.g., AWS Ground Station).
• Active security clearance or ability to obtain one.
• Knowledge of RF and Ground Based Stations.
• Knowledge of Battery Management Systems (Li-Ion Controllers) .
  
  

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 .