Fourth Power

2026 Summer Mechanical Engineering Intern 

Mechanical Engineering Intern

Pursuing mechanical engineering; CAD experience; lab/test environment familiarity; strong communication.

Principal Systems Engineer

10+ years in systems engineering; formal requirements management, risk identification, and interface control; BS in Mechanical, Electrical, or Chemical Engineering or equivalent.

Engineering Technician

5+ years in industrial equipment maintenance or mechanical assembly; proficient with machine shop tools; proficient with MS Excel/Word/Outlook; experience writing procedures; strong organization and communication; able to lift up to 25 lbs.

Title	Location	Date
2026 Summer Mechanical Engineering Intern Internship Middleton, Massachusetts, United States · Onsite	Middleton, Massachusetts, United States Onsite	Apr 9, 2026
Principal Systems Engineer Full Time · 10+ YOE Middleton or Bedford · Onsite	Middleton or Bedford Onsite	Mar 24, 2026
Engineering Technician Full Time · 5+ YOE Middleton, Massachusetts, United States · Onsite	Middleton, Massachusetts, United States Onsite	Mar 2, 2026

Activities	thermal energy storageutility-scale battery manufacturingrenewable energy integrationpower generation equipmentgrid technology development
Headquarters	US
Industries	Energy StorageRenewable Energy
Name	Fourth Power
Employees	25
Type	Private
Tagline	Manufacturing ultra-high temperature thermal batteries for grid-scale storage.
Founded	2,021
Website	gofourth.com
Latest Funding Round	Series A
Latest Funding Year	2,025
Latest Funding Amount	20,000,000
Latest Investors	Munich Re Ventures

Fourth Power

About Fourth Power