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Field Service Representative III (FSR III) – Future Opportunities

Torrance, California, United States
Full Time On-site

Summary

Job Description

Job Summary: 

The Field Service Representative III (FSR III) is a senior-level technician providing advanced technical, operational, and training support for Epirus HPM-CUAS systems. FSR IIIs act as the technical lead during field operations and deployments, conduct detailed system diagnostics, and interface directly with program offices and engineering teams. This position combines hands-on expertise with leadership, mentorship, and customer-facing responsibilities. 

Responsibilities:  

  • Lead installation, commissioning, and sustainment of deployed systems. 
  • Conduct advanced fault isolation, software configuration, and system-level troubleshooting. 
  • Serve as primary field point-of-contact for customer operations and mission support. 
  • Deliver New Equipment Training (NET) and mentorship to junior FSRs. 
  • Provide detailed feedback to engineering and logistics for continuous product improvement. 
  • Support operational assessments, testing, and extended OCONUS deployments. 

Basic Qualifications: 

  • Typically requires a minimum of 5 years of related experience with a Bachelor’s degree; or 3 years and a Master’s degree; or a PhD without experience; or equivalent work experience. 
  • Proven experience supporting complex defense or communications systems. 
  • Ability to lead small teams in remote or austere environments. 
  • Active Secret clearance: TS/SCI eligibility preferred. 

Preferred Skills and Experience: 

  • Hands-on experience with counter-UAS or directed energy systems. 
  • Strong leadership and mentoring ability. 
  • Experience developing field procedures, checklists, or technical documentation. 
  • FAA Part 107 certification (or willingness to obtain). 
  • Routine manual lifting of objects 50-80 pounds such as boxes and other equipment. Perform work in unusual and sometimes difficult positions such as climbing ladders; high lift equipment up to 40 feet, crawl spaces, above ceilings, etc. Manual dexterity required for frequent reaching, climbing, and lifting of moderate objects, operation of power and manual tools/equipment, and operating office equipment. 
  • Typical overseas assignments are frequently performed in both internal and external environments with a variety of weather conditions. Ability to work under extreme hot or cold weather conditions with exposure to dust or dirt is routine and may require the use of protective personal equipment (PPE). 
  • This position will require overseas travel. Candidates should be willing to be on travel / TDY away from their home location 90 – 120-day durations, in hazardous duty locations. 
  • FAA Part 107 certification 

ITAR REQUIREMENTS:

  • To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.   

At Epirus, you’ll work with technical peers and great people—and get first crack at some of the defining technology challenges of our time. Here, “impossible” is just a challenge. We're a diverse, fast-growing team of change-makers fueling the future of energy with revolutionary solutions. Join us and rewrite the rules. 

As required by the Equal Pay Transparency Act, Epirus provides a reasonable range of minimum compensation for roles that may be hired. Actual compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, and specific office location. 
For the state of California only, the range of starting pay for this role is:
$99,000—$120,900 USD

About Epirus

Epirus

Epirus is a fast-growing defense technology company building next-generation directed energy systems designed to counter modern battlefield threats, especially drone swarms and electronic attacks. The company is best known for its flagship system, Leonidas, a high-power microwave platform that disables electronics at range and represents a shift toward “one-to-many” counter-drone defense capabilities in modern warfare.

For job seekers, Epirus offers the chance to work on highly advanced systems at the intersection of electronics, software, AI, and defense engineering. The company hires across robotics, electrical engineering, RF systems, software development, systems engineering, manufacturing, and defense program roles—making it especially attractive to engineers, veterans, and cleared professionals who want to build technologies used directly in national security missions.

Unlike traditional defense contractors, Epirus operates with a startup-style, mission-driven culture focused on speed, ownership, and rapid deployment of technology into real-world environments. Employees work in a highly technical environment where hardware and software are tightly integrated, and where innovation is driven by urgent operational needs rather than long development cycles.

As militaries increasingly prioritize counter-drone, electronic warfare, and autonomous defense systems, Epirus continues to grow its footprint through new contracts, partnerships, and production scaling. For professionals looking to join a high-growth defense startup building cutting-edge electromagnetic and AI-enabled defense systems, Epirus stands out as one of the most closely watched companies in the modern defense technology ecosystem.

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