Staff Engineer - Heartbeat AI

**1KOMMA5°** At **1KOMMA5°**, we pursue a clear vision: **Living on wind and sunlight forever for free**. 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? Apply now and help us shape the energy world of tomorrow.** Learn [more](https://1komma5.com/de/ueber-uns/jobs/tech/) about our Product & Tech team! **Deine Position** * Own technical direction across Heartbeat AI's engineering domain (Mobile Apps, Energy Data, IoT Platform, and beyond), keeping architecture aligned with product direction * Accountable for consistent execution of technical decisions within your domain, setting clear direction and holding the team accountable for implementation * Set the technical bar for the team, stepping into the hardest problems yourself rather than just directing others * Translate business and product requirements into technical solutions * Mentor and challenge engineers within Heartbeat AI to accelerate their growth * Build a high-performing engineering culture within the Heartbeat AI team * Embed security and reliability as direct customer value * Architect our systems and APIs so AI agents operate as first-class users with machine-readable contracts and structured errors that let agents self-correct * Drive Heartbeat AI's shift to agentic engineering, reshaping how the team works so agents execute safely while humans stay accountable * Own the architecture of the AI systems that power the product itself, from our EMS to our energy tariff Technologies you will work with include: * AI-assisted development with Cursor and agentic coding workflows * Cloud & Infra: Google Cloud Platform, GKE (Kubernetes), Cloud Run, Terraform/IaC, Vercel * Messaging & IoT: Eclipse Hono, MQTT, Mender * Data & BI: PostgreSQL, BigQuery, SQLMesh, Looker * Observability: Datadog, OpenTelemetry * Languages: TypeScript (Nest.js, Next.js), Java, Go, Flutter * DevOps: CI/CD pipelines (GitHub Actions) * Linear, Notion, Figma, Miro **Dein Profil** * Extensive hands-on experience in software development with multiple general-purpose programming languages for a minimum of 5 years * A proven track record of architecting scalable and secure systems, demonstrating a strong commitment to quality * Extensive experience in designing and implementing APIs that enable seamless integration and system communication * An agile and result-oriented mindset, with a strong emphasis on collaboration and teamwork * Experience communicating with stakeholders in business terms and understanding the technical implications of their requirements * Experience driving technical alignment within a team in fast-paced environments, including making and following through on critical technical decisions * Experience designing systems and APIs for agent consumption, with structured errors and clear contracts that let agents self-correct * Capability to guide an engineering team through the shift to agentic engineering, reshaping workflows so agents execute safely while humans stay accountable for every outcome * Experience architecting AI/ML-driven or data-intensive systems (e.g. forecasting, real-time data pipelines), ideally in an energy or IoT context * Strong verbal and written communication skills in English, with proficiency in German considered a plus **Benefits** * You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen * With your work, you accelerate the "energy transition" and hence have a direct impact on our climate * Work with and learn from other super-smart colleagues * You will enjoy direct contact with core decision-makers * You will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups * You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich * Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass * Benefits and discounts are yours with Futurebens * Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time * Individualised opportunities for professional development * Reporting directly to the CTO Find more [English Speaking Jobs in United Kingdom](https://www.arbeitnow.co.uk/english-speaking-jobs) on Arbeitnow