[Hiring] Full-Stack Developer @1KOMMA5˚

Role Description

Your mission:

• Full-Stack Development (Edge to Cloud): You develop the core components for our energy management system Heartbeat AI Enterprise – both locally on our IoT gateways (Edge) and scalably in our cloud-native backend architecture.
• Gateway Programming (Go & Lua): You write high-performance code for our edge controllers. With Golang, you build robust system services and communication layers; with Lua, you create lightweight, dynamically adaptable control scripts and protocol drivers for inverters, BESS, and HVAC systems.
• Cloud Services & Microservices: You design and program scalable microservices in Go within the cloud backend to process time-series data, telemetry, and manage fleet operations across hundreds of customer sites.
• Interfaces & Protocols: You implement communication protocols for the IoT ecosystem (MQTT, REST/gRPC) as well as for local equipment communication (Modbus TCP/RTU).
• VPP & Trading Integration: You 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 work closely in a cross-functional team with system architects, PLC developers, and product management to swiftly bring new commercial energy management features to the platform.

Qualifications

• A degree in Computer Science, Software Engineering, or a comparable qualification, or sound professional experience in professional software development.
• Strong programming skills in Golang (Go) (ideally in a cloud and microservices context) as well as practical experience in the Lua scripting language (e.g., for embedded / edge applications).
• Solid 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).
• Confident handling of common network and IoT protocols (such as MQTT, REST) and ideally experience with industrial communication (Modbus).
• A structured, solution-oriented mindset and the motivation to actively contribute to building Europe's largest decentralized Virtual Power Plant.
• Business-fluent German and English skills, both written and spoken.

Benefits

• You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen.
• With your work, you accelerate the "energy transition" and hence have a direct impact on our climate.
• Work with and learn from other super-smart colleagues.
• You will enjoy direct contact with core decision-makers.
• You will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups.
• You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich.
• 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.