(Senior) Lab Engineer (m/f/d)
Confirmed on the employer's own hiring board on Oct 22, 2026. First seen by Alion on Oct 22, 2026. 1Komma5 scores B on the Alion truth index.
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!
Your mission
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 setups that simulate single-home environments (PV, battery, heat pump, EV charger)
Definition of test KPIs, documentation and evaluation of results
Develop and improve lab testing software, test automation, methodologies, and procedures
Guide junior lab engineers in daily tasks and support their technical and professional development through mentoring
Your profile
The successful candidate will have:
Completed studies in electrical engineering or mechatronics, 4+ years of experience in assembly, testing, or maintenance of electrical systems, preferably in renewable energy
Elektrofachkraft (EFK) qualification and proficiency reading electrical schematics and technical documentation
Hands-on experience with multimeters, oscilloscopes, and power analyzers
Experience collaborating with development, support teams and stakeholders to troubleshoot technical issues
Valid driver’s license Class B
Strong documentation skills, with the ability to record and communicate test procedures, results, and best practices
Fluency in English and German, both written and verbal
Bonus points for:
Familiar with state of the art AI development using Tools like Claude Code, Cursor and other development tools
We are an ambitious and dynamic company with a talented team. We require our engineers to be imaginative, enthusiastic, and willing to tackle new challenges as we strive to provide everyone with renewable energy technologies.
Benefits
You are part of a dynamic team with people who prove every day that they can make things happen and move companies forward with great positive impact
You move in flat hierarchies and have short decision-making paths. You can learn a lot quickly and get involved at different levels
You will be welcomed by a friendly and familiar team
You are part of the energy transition and recognize in your daily work what purpose it serves
You can work in one of our offices in Hamburg, Berlin or Munich
You create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass
Benefits and discounts are yours with Futurebens
Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time