Hamburg Hybrid (50/50) | 50.000 – 55.000 € p.a. (Full-time) | German C1 Do you want customers to feel well taken care of — and be the person who makes that happen? Join suena energy as Customer Success Manager (f/m/x)! Customer Success is what keeps our customers close and confident — the foundation for partnerships that last and grow — and the single channel that routes every request internally, so the rest of the team stays focused instead of being pulled in every direction. suena energy is a green tech startup specializing in algorithmic energy trading for energy storage systems and renewables. Our vision : a world where clean energy is used reliably, economically, and intelligently - and where we actively accelerate the energy transition by enabling batteries and renewables to power our grids. With our AI-based optimization and trading software, we maximize the value and market participation of large-scale energy storage and renewable assets in short-term electricity and balancing markets - while minimizing risk for operators. We're a 50+ person team that's fast-paced by nature, but the kind of place where people actually look out for each other. Following our successful Series A, we're investing in expanding our team – and Customer Success is next: over the past months, Lars built the function from scratch, and now we're adding a junior and a regular CS to turn it into a real team. Keep the operational backbone running – ticketing, HubSpot, and our data room (Dock), clean and up to date. Take customer questions and route them internally – the "travel agent" who gets every request to the right people fast. Support onboarding – ensure a smooth handover from Sales and give new customers a clear picture of what happens next. Prep and grow into running QBRs – pull the data together with Data Science and show customers how their asset is performing. Work hand in hand with Sales and Ops – the glue that keeps everyone coordinated. Shape a function that's still taking form – spot what's unclear, sharpen processes, bring your own ideas. Energy background – you bring relevant experience or a solid understanding of the energy trading industry and can connect the dots. You can read the numbers and make them make sense – you understand a performance dashboard and explain it to a customer in plain language. Calm, warm, and real – our customers are engineers and asset operators; they trust substance, not a sales show. Organized and reliable – you keep track of what's open and don't let things slip. Up for building, not just running – you see an unfinished CS function as a plus, not a problem. A genuine team player – you pull the same rope with Sales and Ops. German at C1 or native level, plus solid English (B2) – most customer communication runs in German; English is our internal working language.