(Senior) Software Engineer - Device Connectivity (Go) (m/f/d)

1KOMMA5°

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

Key responsibilities include but are not limited to:

• Own the technical integration of inverters, batteries, charging infrastructure, and heat pumps into our Heartbeat energy management system, driving projects end-to-end to deliver solutions on time.
• Ensure seamless communication and interoperability between different OEM devices.
• Implement communication protocols such as Modbus TCP, OCPP, MQTT, EEbus.
• Develop, deploy, and maintain services on our IoT gateway using Go programming.
• Diagnose network issues across LAN/WAN, VPN, firewalls, and protocols, and turn that understanding into resilient edge services.
• Conduct testing of our energy management system in our lab in Berlin.
• Collaborate with cross-functional teams to ensure software meets performance and reliability standards.
• Provide expert-level support to both internal and external stakeholders.
• Foster a culture of experiment-driven innovation within the team

Your profile

• Bachelor's or Master's degree in Computer Science, Electrical/Electronics Engineering, Control Engineering or related field.
• Proven experience in IoT development and integration, with a focus on integrating diverse OEM devices.
• Hands-on experience in the development of software modules for IoT devices.
• Experience with Go programming is highly preferred.
• Proficiency in communication protocols such as Modbus TCP, OCPP, and MQTT.
• Solid understanding of local area networks (TCP/IP, LAN/WLAN) and experience with device discovery and scanning mechanisms within home networks.
• Familiarity with DevOps practices and tools, including continuous integration and deployment (CI/CD) pipelines.
• Prior exposure to energy management systems is desirable.
• Outstanding, proactive communication skills: you excel at engaging stakeholders and initiating cross-team collaboration
• Excellent troubleshooting and problem-solving skills.
• Experience quickly finding your way around in cross-functional teams in a fast pace, interdisciplinary working environment
• An agile and result-oriented mindset and you consider yourself a team player
• Very good knowledge of spoken and written English, German is a plus

• Experience in network or systems administration (routing, firewalls, DNS, DHCP) in a production environment.
• Familiarity with cloud platforms (ideally Google cloud) and their integration in IoT solutions.
• Previous experience in providing support to international stakeholders.
• Certifications related to IoT and energy management

Benefits

• You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen
• 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