Hire engineers with documented battery / ev experience. A structural engineer who has only worked on commercial buildings is not the same hire as one who has worked on industrial plant — sector context changes the work.
Discipline tells you what an engineer can calculate. Industry tells you whether they have met the constraints your sector actually imposes — the approvals, the operating environment, the failure modes that matter, and the conventions your reviewers expect to see.
Filter on battery / ev experience alongside discipline and standard. An engineer who has delivered in your sector will ask better questions in the first conversation, which is usually the clearest signal you will get before you hire.
This sector is in the taxonomy and open for profiles. Post your project — engineers with adjacent sector experience will be matched and can demonstrate transferability.