Systems engineering jobs

Systems engineers turn what a machine must do into written requirements, define the interfaces between its mechanical, electrical, and software parts, and prove through testing that the assembled whole meets them. In clean energy most such jobs sit with companies building a new product, from fusion developer Thea Energy to makers of battery storage, solar trackers, and wind towers.

What the jobs involve

• Systems engineers and architects own requirements, interface control documents (ICDs), and design reviews. At Thea Energy they define the control architecture of a stellarator or the process interfaces of its fuel cycle.
• Integration engineers bring subsystems together: at FlexGen they link the HybridOS controls to a battery storage plant's hardware and write the test plans; at Ulteig and Isotrol they connect PLCs, SCADA, and substation relays and commission them on site.
• Verification engineers write test plans and compare results with models, as Array Technologies' entry-level Systems Engineer I does for solar trackers, or check a battery pack against its requirements, as at Gotion.
• Subsystem owners take one system from requirement to verified product, such as the internals of Modvion's wooden wind turbine towers.

Who is hiring

Product developers lead: Thea Energy in Kearny, New Jersey, FlexGen and Gotion in batteries, Array Technologies in Chandler, Arizona, Sol-Ark in Allen, Texas, and Modvion in wind. Ulteig and Isotrol hire integrators for renewable plants and substations. Commonwealth Fusion Systems, Plug Power, and Fluence advertise systems roles regularly; in Europe, CorPower Ocean (wave energy, Stockholm) and Kitepower (airborne wind, Delft) have done so.

Skills and qualifications

Most posts ask for a degree in mechanical, electrical, or systems engineering; Array takes graduates with internship or project experience and exposure to FEA. Product roles ask for requirements management, FMEA, and design reviews; fusion roles want experience on facilities such as ITER or W7-X, battery roles functional safety under ISO 26262. Integrators need PLC programming, SCADA platforms such as Ignition, and protocols such as DNP3, Modbus, and IEC 104. Rondo Energy and NRG have asked for INCOSE certification (ASEP or CSEP), and model-based roles name SysML and tools such as Cameo or Capella.

What is changing

Fusion companies raised a record $4.48bn in the 12 months to July 2026 and now employ over 16,000 people, according to the Fusion Industry Association. As they move from design to building machines, they need more people who can hold interfaces and test plans together.