Principal Software Engineer (m/f/d)

1KOMMA5°At 1KOMMA5°, we pursue a clear vision: Living on wind and sunlight forever for free. To make this a reality, we are building the energy system of the future with Heartbeat AI. Want to be part of it? We bring together regional craftsmanship and scalable software: We don't think of solar, batteries, heat pumps, and e-mobility as isolated components, but control them as an intelligent, integrated overall system in our virtual power plant. Directly connected to the electricity market – in real time, fully automated. This way, energy is used when it is available from renewables and particularly cost-effective. By 2030, our goal is to transition 1.5 million households to renewable energies. Over 3,000 people are working towards this every day, at more than 80 locations worldwide, from Finland to Australia. Want to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow. Learn more about our Product & Tech team! Deine PositionIn tech we have two main work streams: • Heartbeat: Building a virtual power plant levering our energy manager “Heartbeat” and evolving the customer experience app around this • Operating System for installation companies: Digitisation of operations and processes from ground operations to rooftop installations At 1KOMMA5°, we are looking for a top-tier Principal Software Engineer who leads with clarity, decisiveness, and deep technical insight. You will shape and own critical architectural decisions, drive alignment across teams, and ensure execution at the highest technical standard. Key responsibilities include but are not limited to:• Shape the organisation's technical strategy and innovation efforts • Accountable for consistent execution of technical decisions by setting clear direction and holding teams accountable for implementation • Ensure continuously that our software architecture is shaped in close alignment with product management to support current and future product