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

Das ist der Job

1KOMMA5At 1KOMMA5, we pursue a clear vision: Living on wind and sunlight forever for free.

Darum lohnt es sich

Apply now and help us shape the energy world of tomorrow.Learn more about our Product & Tech team!Your missionAt 1KOMMA5, we connect and manage tens of thousands of distributed energy devices at scale.

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.Key responsibilities include but are not limited to:Take ownership of our systems at the intersection of Cloud Services and residential IoT GatewaysOperate and evolve our Kubernetes-based IoT Cloud Platform, including the deployment, scaling, and hardening of our connectivity and fleet servicesDevelop and run our Eclipse Hono stack as the messaging backbone between gateways and the cloudDesign, build and operate features around fleet management enabling the lifecycle of gateways from production line to fieldIntegrate tightly with Mender to operate safe OTA rollouts across the fleet.Contribute to load and resilience tests to prove the platform scales and to find limits before our customers doBuild and own the observability pipelines for the IoT Platform and turn metrics into automated monitors, alerts, and self-healing mechanismsBuild data pipelines and BI models to turn raw data into fleet insightsWork 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 plantFoster a culture of experiment-driven innovation within the teamTechnologies you will work with include:Cloud & Infra: Google Cloud Platform, GKE (Kubernetes), Cloud Run, Terraform/IaCMessaging & IoT: Eclipse Hono, MQTT, MenderData & BI: PostgreSQL, BigQuery, SQLMesh, LookerObservability: Datadog, OpenTelemetryLanguages: TypeScript (Nest.js), Java, GoDevOps: CI/CD pipelines (GitHub Actions)Your profileThe successful candidate will have:Bachelor's or Master's degree in Computer Science, Software Engineering, or related field5+ years of experience building and operating cloud / distributed backend systems in productionStrong hands-on experience with Kubernetes (ideally GKE) and modern cloud-native operationsSolid understanding of MQTT and device-to-cloud messaging patterns at scale, including back-pressure, QoS, and fan-outExperience designing and running observability pipelines (logs, metrics, traces) for large-scale distributed systems, and turning them into actionable monitorsComfortable working with data and BI tooling — writing SQL, modeling data, and building dashboards that drive decisionsExperience with CI/CD, IaC, and platform engineering practicesA strong reliability and security mindsetAbility to guide architectural decisions and navigate across embedded, hardware, data, and product teamsAgile, product-oriented mindset and a strong team player with a bias for action and ownershipStrong troubleshooting and analytical mindsetClear and effective communicator in English (German is a plus)Bonus points for:Production experience with Eclipse Hono or a comparable IoT connectivity platformFamiliarity with Mender or other large-scale OTA / fleet management systemsExperience with SQLMesh and/or Looker (LookML) specificallyFamiliarity with Google Cloud Platform as the primary cloudExperience running load tests for messaging infrastructure or large-scale distributed systems.Passion for climate tech and distributed energy systemsWe are an ambitious and dynamic company with a talented team.

Benefits You are part of an international, dynamic, and highly motivated team of people who have proven to make things happenWith your work, you accelerate the "energy transition" and hence have a direct impact on our climateWork with and learn from other super-smart colleaguesYou will enjoy direct contact with core decision-makersYou will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleupsYou work remotely (Germany-wide), with offices in Hamburg, Berlin or MunichCreate a healthy balance alongside your work and enjoy all the benefits of the EGYM WellpassBenefits and discounts are yours with FuturebensWhether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same timeAbout us"At 1KOMMA5, our vision is to accelerate CO2 neutral life for all!

Connecting our customers into one powerful clean energy operating system to enable flexible tariffs and to ultimately follow the rhythm of wind and sun!" - Philipp Schröder (CEO 1KOMMA5) To make this a reality, we are building the energy system of the future with Heartbeat AI.

Want to be part of it?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?

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.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 require our engineers to be imaginative, enthusiastic, and willing to tackle new challenges as we strive to provide everyone with renewable energy technologies. We created an easy one-stop-shop to buy and install solar, charging stations and heat pumps, with the purpose of liberating all European homes from the shackles of fossil fuels.

With Heartbeat, we make clean energy smarter.