(Senior) IoT Cloud Engineer (m/f/d)

<h2>1KOMMA5°</h2> <p>At <strong>1KOMMA5°</strong>, we pursue a clear vision: <strong>Living on wind and sunlight forever for free</strong>. To make this a reality, we are building the energy system of the future with Heartbeat AI. Want to be part of it?</p> <p>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.</p> <p><strong>Want to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow.</strong></p> <p>Learn about our Product &#x26; Tech team!</p> <h2>Deine Position</h2> <p>At 1KOMMA5°, we connect and manage tens of thousands of distributed energy devices at scale. As a (Senior) IoT Cloud Engineer, you will own the cloud side of our IoT Platform that ingests, routes, and observes every message flowing between our gateway fleet and our cloud services.</p> <p>You will work at the intersection of cloud infrastructure, messaging systems, data and IoT engineering, making sure our device-to-cloud highway is reliable, secure, observable, and cost-efficient as the fleet grows. We are a Platform team: your work directly enables product teams across Heartbeat AI to ship features faster, while giving the business a clear, data-driven view of fleet health and performance.</p> <p>Key responsibilities include but are not limited to:</p> <ul> <li>Take ownership of our systems at the intersection of Cloud Services and residential IoT Gateways</li> <li>Operate and evolve our Kubernetes-based IoT Cloud Platform, including the deployment, scaling, and hardening of our connectivity and fleet services</li> <li>Develop and run our Eclipse Hono stack as the messaging backbone between gateways and the cloud</li> <li>Design, build and operate features around fleet management enabling the lifecycle of gateways from production line to field</li> <li>Integrate tightly with Mender to operate safe OTA rollouts across the fleet.</li> <li>Contribute to load and resilience tests to prove the platform scales and to find limits before our customers do</li> <li>Build and own the observability pipelines for the IoT Platform and turn metrics into automated monitors, alerts, and self-healing mechanisms</li> <li>Build data pipelines and BI models to turn raw data into fleet insights</li> <li>Work collaboratively with product managers, data engineers, IoT engineers, as well as cloud engineers to understand problems, support discoveries, and create solutions enabling a scalable virtual power plant</li> <li>Foster a culture of experiment-driven innovation within the team Technologies you will work with include:</li> <li>Cloud &#x26; Infra: Google Cloud Platform, GKE (Kubernetes), Cloud Run, Terraform/IaC</li> <li>Messaging &#x26; IoT: Eclipse Hono, MQTT, Mender</li> <li>Data &#x26; BI: PostgreSQL, BigQuery, SQLMesh, Looker</li> <li>Observability: Datadog, OpenTelemetry</li> <li>Languages: TypeScript (Nest.js), Java, Go</li> <li>DevOps: CI/CD pipelines (GitHub Actions)</li> </ul> <h2>Dein Profil</h2> <p>The successful candidate will have:</p> <ul> <li>Bachelor's or Master's degree in Computer Science, Software Engineering, or related field</li> <li>5+ years of experience building and operating cloud / distributed backend systems in production</li> <li>Strong hands-on experience with Kubernetes (ideally GKE) and modern cloud-native operations</li> <li>Solid understanding of MQTT and device-to-cloud messaging patterns at scale, including back-pressure, QoS, and fan-out</li> <li>Experience designing and running observability pipelines (logs, metrics, traces) for large-scale distributed systems, and turning them into actionable monitors</li> <li>Comfortable working with data and BI tooling — writing SQL, modeling data, and building dashboards that drive decisions</li> <li>Experience with CI/CD, IaC, and platform engineering practices</li> <li>A strong reliability and security mindset</li> <li>Ability to guide architectural decisions and navigate across embedded, hardware, data, and product teams</li> <li>Agile, product-oriented mindset and a strong team player with a bias for action and ownership</li> <li>Strong troubleshooting and analytical mindset</li> <li>Clear and effective communicator in English (German is a plus) Bonus points for:</li> <li>Production experience with Eclipse Hono or a comparable IoT connectivity platform</li> <li>Familiarity with Mender or other large-scale OTA / fleet management systems</li> <li>Experience with SQLMesh and/or Looker (LookML) specifically</li> <li>Familiarity with Google Cloud Platform as the primary cloud</li> <li>Experience running load tests for messaging infrastructure or large-scale distributed systems.</li> <li>Passion for climate tech and distributed energy systems We are an ambitious and dynamic company with a talented team. We require our engineers to be imaginative, enthusiastic, and willing to tackle new challenges as we strive to provide everyone with renewable energy technologies.</li> </ul> <h2>Benefits</h2> <ul> <li>You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen</li> <li>With your work, you accelerate the "energy transition" and hence have a direct impact on our climate</li> <li>Work with and learn from other super-smart colleagues</li> <li>You will enjoy direct contact with core decision-makers</li> <li>You will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups</li> <li>You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich</li> <li>Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass</li> <li>Benefits and discounts are yours with Futurebens</li> <li>Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time</li> </ul> <p>Find <a href="https://www.arbeitnow.com/">Jobs in Germany</a> on Arbeitnow</a>