1KOMMA5°

We are looking for you as an addition to our tech-team in Berlin, Munich or Hamburg. 1KOMMA5° is building Germany’s largest one-stop-shop for sale, installation and services related to solar, heat pumps, electricity and charging infrastructure. And they are all connected! Be a part of our mission!
Become a part of our mission and learn more about our Product & Tech team!

ABOUT US

“At 1KOMMA5°, our vision is to accelerate CO2 neutral life for all! We created an easy one-stop-shop to buy and install solar, charging stations and heat pumps, with the purpose of liberating all European homes from the shackles of fossil fuels. With Heartbeat, we make clean energy smarter. Connecting our customers into one powerful clean energy operating system to enable flexible tariffs and to ultimately follow the rhythm of wind and sun!” - Philipp Schröder (CEO 1KOMMA5°)

• Build and maintain the foundational software stack for our IoT gateway using Yocto-based Linux builds.
• Develop and optimize Go-based services for MQTT message brokering and integration with Eclipse Hono for telemetry and command flows.
• Implement logging and metrics collection pipelines to provide observability and troubleshooting capabilities for large-scale deployments.
• Implement and maintain secure OTA update pipelines using Mender, ensuring safe rollback and version management.
• Design and maintain secure boot and hardware safeguards to guarantee trusted firmware execution.
• Collaborate with hardware engineers on board-level design, validation, and certification of the gateway.
• Ensure compliance with security and connectivity certifications relevant to large-scale IoT deployments