Stellendetails

Our software decides every 15 minutes what a battery should do. You own the layer that makes it happen: our EMS, the interface between our optimizer and every battery we connect. Whether we build our own EMS or integrate existing ones is a call you'll help us make.

- Own our EMS integration layer: one clean interface that connects any storage system (inverter, BMS, site controller) to our optimizer

- Onboard new vendors over Modbus, MQTT and vendor APIs, so the next battery is a config, not a project

- Commission systems on site until the battery follows the plan to the kW

- Build our own edge box on standard hardware (think Raspberry Pi on a DIN rail)

YOU WILL HAVE FUN IF YOU ARE

Builder with agency

- Get-shit-done mentality: you'd rather drive to the site than wait for a support ticket

- High ownership: the EMS interface is yours, from the vendor call to go-live

Mission-driven

- Passionate about energy transition and climate impact

- Thrive in early-stage chaos (e.g. "Can you be in Ingolstadt tomorrow at 8?")

YOU WON'T HAVE FUN IF YOU

- Like to follow processes. We don't have any.

- Want to work remotely. We're in the office 5 days/week, and regularly on site at customers.

- Want to stay on one side of the wall. This is half software, half hardware.

QUALIFICATIONS

- Hands-on experience with energy management systems (EMS) for battery storage, PV or C&I sites. Ideally you've built or integrated one yourself. Similar experience counts too (e.g. SCADA, EV charging, building automation or industrial controls): a lot of that knowledge transfers directly

- Solid Python and embedded Linux (networking, VPN, remote updates)

- Industrial protocols: Modbus TCP/RTU, MQTT, REST

- Electrical basics: inverter, BMS, grid connection point. Bonus: PV/battery commissioning

- Fluent German, because installers and customers speak German

Don't worry if you don't have all of the above. We prefer fast learners over high experience.

PERKS

- Super small team, super early: you shape the culture

- You own the EMS and the hardware: how we connect batteries and which box we ship is your call

- Direct customer access: see your code move a megawatt-hour battery

- €70–100K salary + equity as full time · €24/h as working student