(Senior) Lab 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 about our Product & Tech team! Deine Position At 1KOMMA5°, we connect and manage distributed energy devices at scale. As a Lab Engineer, you will build and configure test setups with integrated PV systems, batteries, heat pumps, and EV chargers. Alongside maintaining and calibrating test equipment, you will develop testing procedures for OEM component compatibility within the Heartbeat platform. Your role also involves providing 3rd-level support, documenting procedures and results, offering guidance to lower-level support teams, and contributing to the improvement of testing methodologies at our Berlin lab. Key responsibilities include but are not limited to: Planning and execution of development-related tests with hardware for an integrated energy control platform OEM and feature integrations: technical exploration with cross-functional teams; coordination and execution of system integration testing Release testing: test conception, coordination, and execution Design and construction of test benches; assemble and configure