Staff Engineer – Heartbeat AI (m/f/d)

Stack

Responsibilities

• ▹Own technical direction across Heartbeat AI's engineering domain (Mobile Apps, Energy Data, IoT Platform, and beyond), keeping architecture aligned with product direction
• ▹Be accountable for consistent execution of technical decisions, setting clear direction and holding the team accountable for implementation
• ▹Set the technical bar for the team, stepping into the hardest problems yourself
• ▹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 systems and APIs so AI agents operate as first-class users with machine-readable contracts and structured errors
• ▹Drive Heartbeat AI's shift to agentic engineering, so agents execute safely while humans stay accountable
• ▹Own the architecture of the AI systems that power the product itself, from the EMS to the energy tariff

Requirements

• ▹Extensive hands-on experience in software development with multiple general-purpose programming languages, minimum 5 years
• ▹A proven track record of architecting scalable and secure systems with a strong commitment to quality
• ▹Extensive experience designing and implementing APIs that enable seamless integration
• ▹An agile and result-oriented mindset with a strong emphasis on collaboration and teamwork
• ▹Experience communicating with stakeholders in business terms
• ▹Experience driving technical alignment in fast-paced environments, including critical technical decisions
• ▹Experience designing systems and APIs for agent consumption, with structured errors and clear contracts
• ▹Capability to guide an engineering team through a major workflow shift

Soft skills

About the company

1KOMMA5° is building the energy system of the future with Heartbeat AI: controlling solar, batteries, heat pumps, and e-mobility as an intelligent, integrated virtual power plant, directly connected to the electricity market in real time. The goal is to transition 1.5 million households to renewable energy by 2030, with over 3,000 people at more than 80 locations worldwide.