Product Engineer

About the Role We're a pre-seed energy technology company on a mission to make energy free for European households. As a licensed electricity retailer, we build an AI-first, full-stack platform that enables hardware companies and energy providers to launch dynamic electricity plans — abstracting all legal and operational complexity into a clean API layer. We're looking for a product-focused engineer who sits at the intersection of customer discovery, end-to-end delivery, and engineering culture. You'll own mission-critical problems for energy retailers and turn complex domain challenges into intuitive, production-grade experiences. This is an early-stage role with real ownership and outsized impact. What You'll Do Sit with customers to dissect problems and develop product intuition that directly guides engineering decisions. Ship end-to-end solutions across the full stack, taking features from discovery all the way to production. Leverage AI-native development tools (e.g., Claude Code, Cursor) as force multipliers to accelerate delivery and increase your impact. Own zero-to-one problems — such as dunning workflows, customer portal re-engineering, and billing engine improvements. Prioritize and curate the roadmap: decide what to build, what to skip, and when to kill an initiative. Solve core energy retail challenges including billing, procurement, retention, and cost optimization. Shape engineering culture, tooling, and processes, and help raise the bar as the team grows. Adapt quickly to new tools and methods and bring the broader team along to the frontier. What We're Looking For Must-haves: 2+ years of software engineering experience delivering full-stack, end-to-end products to production. A demonstrated track record of shipping real product work — we assess what you've built, not just your résumé. Proven experience owning zero-to-one problems from discovery through to production. Hands-on experience with AI-native codebases and AI-assisted development tools (e.g., Claude Code, Cursor). Strong full-stack capabilities and comfort owning end-to-end systems. High ownership mindset with the ability to thrive in ambiguity and early-stage environments. Strongly preferred: Experience solving billing, procurement, customer retention, or cost-optimization problems for an energy retailer or similar consumer-facing domain. Experience shaping engineering culture, tooling, and processes on a small or early-stage team. Nice to have: Experience building or contributing to core products in high-engineering-bar environments or successful open-source projects. Background in energy technology, smart hardware integrations (e.g., EVs, heat pumps), or European energy markets. Compensation & Benefits Salary: €80,000 – €120,000 per year, depending on experience. Early-stage equity opportunity on a mission-driven team. Visa sponsorship: Not available — candidates must have the right to work in Germany. Location This is a fully on-site role based in Berlin, Germany . We work together in person; remote-only arrangements are not available for this position.