IoT Platform Engineer - Energy Systems (f/m/d)

FION Energy GmbH; Berlin; Vor Ort; Vertraulich; Vollzeit

Benefits dieser Stelle

Virtual shares (VSOP)

Real impact with immediate results

Career growth opportunities in a startup environment

Zusammenfassung

FION Energy GmbH in Berlin is looking for a software engineer skilled in IoT and edge systems. This role involves co-designing a cutting-edge platform that optimizes energy storage and management. You will be part of a small team and work closely with the CTO, directly impacting battery operations that deliver real savings to factories. Ideal candidates have 5+ years of experience, strong Linux skills, and familiarity with industrial protocols. The position offers a competitive salary and a hybrid work model.

Qualifikationen

• 5+ years of professional software engineering experience.
• Hands-on experience deploying and managing IoT or edge devices in production.
• Strong experience with physical hardware.

Aufgaben

• Co-design the edge platform from the ground up.
• Work on cloud data and control platform, and integrate edge and cloud.
• Collaborate directly with the CTO and co-founder.

Kenntnisse

Software Engineering

IoT device management

Strong Linux skills

Industrial protocols (Modbus, MQTT)

Ownership mindset

Tools

AWS IoT

Azure IoT Hub

Embedded Linux (Yocto, Buildroot)

Jobbeschreibung

Tasks

FION Energy develops software for the dimensioning, intelligent control, and monitoring of industrial energy storage and PV systems. Our AI-driven platform optimizes battery operations across peak shaving, self-consumption optimization, spot market trading, and flexibility marketing, cutting electricity costs with payback periods of 2-4 years. We're a Berlin-based team with paying customers and batteries already running in the field.

Our mission is to build a truly end-to-end platform - from ML and optimization, through data streaming and control, to the edge device sitting at the customer site. We're looking for an engineer with deep experience in edge and IoT systems to join us as an early hire. You'll work on our cloud data and control platform, our own edge stack, and different edge and cloud integrations - whatever matters most for the business right now. This is a startup role: you should be comfortable switching between strategic thinking and hands-on work.

You'll work directly with the CTO and co-founder.

Requirements

You bring:

• 5+ years of professional software engineering experience


• Hands-on experience deploying and managing IoT or edge devices in production


• You've dealt with the reality of physical hardware in the field


• Strong Linux skills (our edge devices run on it)


• Experience with at least one device integration over industrial protocols (Modbus, MQTT, OPC-UA, or similar)


• An ownership mindset- you want to shape the platform, not just implement tickets

Even better if you have:

• Energy domain knowledge - you understand power, energy, phases, and how the grid works


• Experience with fleet management - OTA updates, device monitoring, remote debugging across many sites


• Familiarity with embedded Linux (Yocto, Buildroot, or similar) and containerized edge deployments


• Experience evaluating and selecting industrial edge hardware


• Experience with cloud IoT platforms (AWS IoT, Azure IoT Hub, or similar)


• Go, Rust, or Java in an IoT/systems context


• German language skills (our customers and partners are German)

Benefits

Ownership: This isn't a role where the architecture is decided and you fill in the blanks. The edge platform is greenfield - you'll co-design it from the ground up.

Real impact, fast: Your code runs physical batteries that save real factories real money. You'll see results the same week you deploy.

Founding trajectory: As FION grows, you grow with it - from hands-on builder to platform lead overseeing a fleet of batteries across the country. What takes 5 years at a large company, you'll have from day one.

Compensation:

• 70,000 - 100,000 EUR annual gross salary (depending on experience)


• VSOP (virtual shares) - you participate in the company's success


• Berlin hybrid (remote from within Germany, possible for the right person)