Software Engineer - Edge & Cloud (m/f/d)

1KOMMA5°

At 1KOMMA5°, we pursue a vision: Living on wind and sunlight forever for free. To achieve this, we are building the energy system of the future with Heartbeat AI. Are you in?

We combine regional craftsmanship and scalable software: we don't think of solar, storage, heat pumps, and e-mobility individually, 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 is how energy is used when it is renewably available and particularly cheap.

By 2030, we aim to switch 1.5 million households to renewable energy. Over 3,000 people work on this every day, at more than 80 locations worldwide, from Finland to Australia.

Do you want to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow.

Your Position

• Full-Stack Development (Edge to Cloud): You will develop the core components for our energy management system Heartbeat AI Enterprise – both locally on our IoT gateways (Edge) and scalable in our cloud-native backend architecture.
• Gateway Programming (Go & Lua): You will write high-performance code for our edge controllers. With Golang, you will build robust system services and communication layers; with Lua, you will create lightweight, dynamically adaptable control scripts and protocol drivers for inverters, BESS, and HVAC systems.
• Cloud Services & Microservices: You will design and program scalable microservices in Go within the cloud backend for processing time-series data, telemetry, and for fleet management of hundreds of customer locations.
• Interfaces & Protocols: You will implement communication protocols for the IoT environment (MQTT, REST/gRPC) as well as for local system communication (Modbus TCP/RTU).
• VPP & Trading Integration: You will enable seamless data flow between local systems (meter readings, flexibilities) and our Virtual Power Plant for automated control based on spot market prices.
• Agile Collaboration: You will work in a cross-functional team closely with system architects, PLC developers, and product management to quickly bring new features for commercial energy management to the platform.

Your Profile

• Completed degree in Computer Science, Software Engineering, or a comparable qualification, or sound professional experience in professional software development.
• Very good programming skills in Golang (Go) (ideally in the cloud and microservices context) as well as practical experience in the scripting language Lua (e.g., for embedded / edge applications).
• Sound understanding of cloud technologies (AWS, GCP, or Azure), containerization (Docker, Kubernetes), and CI/CD pipelines.
• Experience in developing IoT solutions or edge computing applications, preferably on Linux-based systems (e.g., Raspberry Pi, industrial PCs).
• Proficient in common network and IoT protocols (such as MQTT, REST) and ideally experience with industrial communication (Modbus).
• A structured, solution-oriented approach and the motivation to actively contribute to building Europe's largest decentralized Virtual Power Plant.
• Fluent German and English skills, both written and spoken.

Benefits

• You have the opportunity to work in our brand new offices in Hamburg city center, Berlin & Munich and/or remotely.
• Use your technical equipment outside of work in your free time as well.
• You are part of a fast-growing company with a lot of development potential, where you can build something independently and feel your impact.
• Operate in flat hierarchies, take on responsibility during your onboarding, and work directly with members of management.
• With your work, you support the megatrend "Energy and Mobility Transition" and make a concrete contribution to the sustainable transformation of our energy infrastructure.
• Be active and utilize the offer from over 7,600 sports partners with the EGYM-Wellpass.
• Whether city bike or e-bike – with our Jobrad leasing, you remain flexible and travel in an environmentally friendly way.
• Benefit from benefits & discounts through Futurebens.