Convert the working-student role into a master's thesis tied to the same energy employer — a thesis on a real industrial problem with a named industry supervisor is the single biggest signal lift available before graduation.

Pick one specialism inside structural / energy engineering that compounds with the energy transition (offshore wind structures, grid infrastructure, hydrogen storage) and build a portfolio of two analysis or design exercises around it — separates you from the generic engineering-student pool.

Spend the remaining student years stacking continental-tier internships at 2–3 different name-brand engineering firms rather than long tenure at one — at this stage breadth of employer brands beats tenure depth and seeds the network you currently lack.