The Key Account Manager (m/w/d) is responsible for developing and expanding international markets in high-voltage cable accessories, maintaining long-term relationships with energy providers, identifying new business opportunities in energy transmission projects, managing complex international tenders and sales processes, monitoring market trends, and collaborating with internal departments, while ensuring compliance and building trusted customer relationships. Requirements include several years of experience in technical international sales, knowledge of energy transmission, project management skills, strong communication, negotiation skills, and fluency in German and English, plus a willingness for international travel.