Product Engineer - Heartbeat

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About the role

As part of one of the teams around Heartbeat AI, you will help build the virtual power plant leveraging the energy manager "Heartbeat", and continuously ship innovative energy market solutions to customers. This is a builder role at the intersection of engineering and product: you co-own the product, define what gets built together with your cross-functional team, ship it fast, and use AI as a force multiplier along the way.

What you'll do

• Own feature development end-to-end, from problem framing through production deployment to long-term maintenance
• Define feature scope together with PMs and engage with the "why", not just the "what"
• Drive technical decisions and guide fellow engineers on architectural choices
• Keep feedback loops short: prototype, ship to real users, observe, adjust
• Use AI tools to amplify your impact and explore AI-powered product opportunities where they make sense
• Push back when something doesn't make sense and propose a better direction
• Improve developer experience by reducing tech debt, automating workflows, and documenting decisions and runbooks

What you'll need

• Solid backend engineering skills with a strong grasp of distributed systems; TypeScript experience is a plus but not required
• Experience with at least one frontend framework
• Familiarity with cloud infrastructure, CI/CD pipelines, and observability tooling; you understand how your code runs in production
• Proven ability to own features end-to-end, from rough problem statement to shipped, maintained product
• A product and customer mindset: you think about user problems, not just implementation elegance
• Experience working in cross-functional teams with product managers and designers
• You actively seek input from your peers and create visibility where it's lacking
• Comfortable with ambiguity and proactive about asking for what you need to get the job done

Nice to have

• Flutter or mobile development experience
• Data engineering fundamentals (BigQuery, data pipelines)
• Hands-on experience with energy systems, IoT, or climate tech
• German language skills
• Experience building AI-powered product features (LLMs, agents)
• Prior experience in a startup or scale-up environment

What they offer

• Work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich
• EGYM Wellpass for health and fitness
• Job bike leasing
• Discounts through Futurebens
• Direct contact with core decision-makers
• Opportunity to impact the energy transition and climate

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