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

1KOMMA5˚; Berlin; Remote; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Remote work Germany-wide

Offices in Hamburg Berlin Munich

EGYM Wellpass

Futurebens discounts

Company bike leasing

Job summary

1KOMMA5° is building the energy system of the future with Heartbeat AI. We seek a skilled Go/Lua developer to build edge-to-cloud components and robust edge services for IoT devices and inverters.

You will design scalable microservices in Go, implement MQTT/REST/gRPC interfaces, and help integrate data with our Virtual Power Plant. Fluency in German and English is required.

Qualifications

• Degree in Computer Science, Software Engineering, or comparable qualification.
• Strong programming in Go and Lua for embedded/edge applications.
• Experience with cloud tech, containers, CI/CD, and IoT protocols.

Responsibilities

• Develop core components for Heartbeat AI Enterprise from edge to cloud.
• Write high-performance edge controller code with Go and Lua.
• Design scalable microservices in Go for time-series data and fleet ops.
• Implement protocols for IoT ecosystem (MQTT, REST/gRPC) and Modbus.
• Integrate data flow between local systems and Virtual Power Plant based on market data.
• Collaborate in a cross-functional team to deliver new features.

Skills

Go programming

Lua scripting

Cloud technologies

Docker/Kubernetes

CI/CD pipelines

IoT/edge computing

German & English

Education

Degree in Computer Science or Software Engineering

Tools

Golang

Lua

AWS/GCP/Azure

Docker

Kubernetes

MQTT

REST/gRPC

Modbus TCP/RTU

Job description

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.

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

Your profile

• 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