Product Engineer (Full-Stack)

About the Role

Join a pre\-seed energy tech startup based in Berlin that is reshaping how European households manage and reduce electricity costs. As a Product Engineer, you will sit at the intersection of customer discovery, end\-to\-end delivery, and engineering culture — turning complex energy retail domain challenges into intuitive, production\-grade experiences. This is a high\-ownership, high\-impact role on a small, mission\-driven team where your work directly moves the business.

What You'll Do

• Engage directly with customers to dissect problems and develop product intuition that guides engineering decisions.


• Ship end\-to\-end solutions across the full stack, taking features from discovery through to production.


• Leverage AI\-native development tools (e.g., Cursor, Claude Code) as force multipliers to accelerate delivery and increase impact.


• Own zero\-to\-one problems such as dunning workflows, customer portal re\-engineering, and billing infrastructure.


• Prioritize and curate the build backlog — deciding what to build, what to skip, and when to kill initiatives.


• Solve core energy retail challenges: billing, procurement, customer retention, and cost optimization.


• Shape engineering culture, tooling, and processes, and help raise the bar as the team grows.


• Stay at the frontier of new tools and methods and bring the rest of the team along.

What We're Looking For

Must\-haves:

• Demonstrated track record of shipping real product work end\-to\-end — we assess what you've built, not just years on a résumé.


• 2\+ years of software engineering experience delivering full\-stack products to production.


• Proven experience with AI\-native development tools and AI\-assisted coding workflows.


• Experience solving billing, procurement, customer retention, or cost\-optimization problems in an energy retail or similar consumer\-facing domain.


• High ownership mindset, strong judgment, and comfort operating in ambiguity in an early\-stage environment.

• Experience shaping engineering culture, tooling, or processes on a small or early\-stage team.


• Contributions to high\-engineering\-bar environments or successful open\-source projects.


• Background in European energy markets, smart home hardware ecosystems (EVs, heat pumps, solar), or regulated utility sectors.

Compensation \& Benefits

• Salary: €80,000 – €120,000 (USD equivalent) annually, depending on experience.


• Opportunity for outsized equity and impact at an early\-stage, venture\-backed startup.


• Note: Visa sponsorship is not available for this role.

Location

This is an on\-site role based in Berlin, Germany. Remote\-only applicants will not be considered. The team works together in person in central Berlin.

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