# R&D Test Engineer - Electrical Power Systems 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: Mid level
- Location: Devens, MA
- Work setup: On-site
- Pay: $107K to $160K base salary per year (USD)
- Posted: 2026-11-04
- Apply by: 2026-12-19
- Apply: https://jobs.lever.co/cfsenergy/cbb51cae-2dfc-45a1-96d0-748ea45293dc?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/commonwealth-fusion-systems-cfs-r-and-d-test-engineer-electrical-power-systems/

## About the role

The role of a Test Engineer is to seamlessly flex between multiple disciplines and groups to effectively execute tests and projects on aggressive schedules supporting Commonwealth Fusion System’s mission. This engineer will be primarily responsible for testing and retiring risks for CFS’ HTS magnets. They must have a fundamental understanding of mechanical, electrical, materials, fluids and software engineering, or some combination thereof. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Bachelor's degree in engineering or science field is required, electrical engineering, mechanical engineering or similar, or applied physics degree
- 5+ years experience designing/building/commissioning specialized electrical apparatus or equipment
- 2+ years using electrical analysis software such as PLECS, LTSPICE, ETAP, Simulink or similar
- Aptitude for applying electromagnetic fundamentals to understand system behavior, such as: parasitic inductance/capacitance, EMI coupling, dielectric breakdown, etc
- Familiarity with electrical standards such as building codes (NEC/NFPA 70), personnel safety (OSHA, NFPA 70E), equipment safety standards (IEC, IEEE, etc)
- Experience working with high-power electronics, such as rectifiers, DC/DC converters, inverters, etc

Tags: R&D Test

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/commonwealth-fusion-systems-cfs-r-and-d-test-engineer-electrical-power-systems/