# Senior RF Test Engineer at Commonwealth Fusion Systems (CFS)

- Company: Commonwealth Fusion Systems (CFS)
- What the company does: The world's largest and leading commercial fusion energy company. Backed by Khosla.
- Company website: https://cfs.energy/
- Type: Startups
- Level: Senior
- Location: Devens, MA
- Work setup: On-site
- Pay: $110K to $185K base salary per year (USD)
- Posted: 2026-09-11
- Apply by: 2026-10-26
- Apply: https://jobs.lever.co/cfsenergy/e4b4149e-2bdb-4f40-b865-d946945d065e
- Page: https://www.1752.vc/careers/jobs/commonwealth-fusion-systems-cfs-senior-rf-test-engineer/

## About the role

This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.

## What they're looking for

- Bachelor’s degree in Electrical Engineering, Physics, or a related field
- 7+ years of hands-on experience testing high-power RF systems, radar, particle accelerators, electric vehicles, or heavy industrial power electronics
- Proven hands-on experience safely working with high voltage components, energy storage (e.g., supercapacitors), and troubleshooting complex analog and digital circuits at the component level
- Proficiency in C++ and Python, with the ability to read code and thoroughly understand software deployments before testing them
- Proven intuition for high-power RF environments
- Ability to lift up to 50lbs

Tags: Electrical Engineering