Integrations Engineer - Embedded Systems Engineer (multi-platform) (f/m/d)

About the Position

Integrations Engineer - Embedded Systems Engineer (multi-platform) (f/m/d)

Berlin

Full-time

Permanent employee

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About the Role

As an Integrations Engineer (Multi-Platform), you'll develop application software for our two hardware platforms. You'll also make sure that software works smoothly with our cloud software, from the field level up to the cloud, before our products reach customers. Your work will reduce failures in the field and raise the quality of what we deliver.

Please note that this is a Berlin-based role. You will be expected to work from our hardware lab 1-2 times per week.

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Responsibilities

• Design and develop system services for our hardware platforms
• Coordinate and implement the interfaces to our cloud components
• Run prototype tests and support field tests
• Build and maintain CI/CD pipelines for cross-compilation across both platforms
• Ensure firmware quality before devices are rolled out to the field
• Create and maintain product and test documentation
• Work closely with the firmware, cloud, and hardware teams

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Requirements

Technical skills:

• Experience developing embedded software for Linux-based systems, ideally across several target architectures (e.g. ARM and MIPS)
• Familiarity with cross-compilation toolchains and different build systems (e.g. Yocto/BitBake and OpenWRT-based environments)
• Knowledge of designing software for resource-constrained systems (memory, flash, performance)
• Proficiency in C/C++ and/or other languages used in embedded systems
• Experience with network protocols and services in an embedded context (e.g. VPN, MQTT, systemd/NetworkManager)

Background:

• Degree in embedded software, electronics, computer engineering, or a related field
• 5+ years of experience in embedded systems, hardware-level development, or testing
• Fluent in English; German is a plus

How you work:

• Hands-on and have practical experience with hardware
• Test and validate software carefully before it's rolled out to a large device fleet
• Enjoy finding and solving problems at the interfaces between components
• Work analytically: find errors systematically and document them clearly
• Set up workflows on your own and keep improving systems
• Communicate well and enjoy working with different teams and external partners
• Willing to come into our hardware lab at our Berlin office at Schlesisches Tor 1-2 times a week

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Nice to Have

• Experience with Teltonika RutOS or similar router/gateway platforms
• Experience with fleet management and deployment infrastructure (e.g. certificate management, OTA updates)

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We Offer

• Urban Sports Club or Become1 vouchers – a monthly bonus to support your lifestyle.
• Work flexibility & Home office – Work from home, at our Berlin office at Schlesisches Tor, or up to 40 days a year worldwide.
• Personal growth & professional development – whether through your personal learning budget, exciting on-the-job challenges, or our open feedback culture.
• Direct impact through your work – join us in actively driving the energy transition and contribute to the fight against climate change every single day.
• We value our team – that’s why regular team events are a core part of our culture.
• The best team Berlin has to offer – and maybe even beyond. Don't believe us? Find out for yourself and apply now!

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About the Company

We are Green Fusion. We help the housing industry to make the heating and energy transition more sustainable – for a green future without compromise. By providing intelligent automation and optimization for a building's entire energy ecosystem, we reduce CO₂ emissions where it matters most. Whether it’s heat pumps, PV systems, or hybrid setups: our product serves as the interface between hardware and software, making maximum sustainability economically viable. Together, we are transforming the building sector and making efficient, climate-neutral energy the new standard.

While we are still considered pioneers today, with you by our side, we will soon dominate the market! Starting in the DACH region, and then across all of Europe. You can expect a motivated, open-minded, and vibrant team that is passionate about actively shaping the energy transition and growing together.

We believe diverse teams build better solutions. That's why we welcome applications from everyone, regardless of gender, nationality, ethnic and social background, religion or belief, disability, age, sexual orientation or identity. And if you don't tick every box on this list, apply anyway: we know no one matches a job description perfectly, and we'd love to hear from you.

We look forward to your application – our team will get in touch with you soon!