Product Engineer (Full-Stack)

About the Role A fast-growing, Berlin-based enterprise AI platform startup is looking for a Full-Stack Product Engineer to join the team on-site. This is an early-stage opportunity where you'll own features end-to-end, work closely with the Chief Product Officer, and help deliver AI-powered capabilities that drive adoption across large organizations. The company builds a model-agnostic, security-first platform that enables enterprises to roll out AI safely and at scale — from everyday chat assistants to complex automations and custom agents. Visa sponsorship is available for this role. What You'll Do Contribute to the development of product features across the AI platform, from technical design through to user-facing implementation. Build end-to-end solutions spanning the frontend ( Next.js ), backend ( Node.js ), and database layers. Implement user interfaces including full screens, reusable components, and multi-step user flows. Collaborate with the design team and customers to gather insights and iterate on product features. Maintain and optimize the codebase for performance and user experience. Participate in regular Support Engineer rotations , where engineering team members shift focus to directly support customers and the customer success team. What We're Looking For Required: 2+ years of experience in software engineering. Bachelor's degree in Computer Science or an equivalent technical field. Proficiency with Next.js , TypeScript , and Node.js . Hands-on experience with PostgreSQL , Redis , Prisma , tRPC , and Tailwind CSS . Proven track record of delivering features end-to-end, from concept to production deployment. Experience building AI-powered product features and integrating AI capabilities into enterprise applications. Experience participating in customer support rotations or directly supporting customers during the product lifecycle. Strong CS fundamentals and ability to learn and adapt quickly in a fast-moving environment. Willingness and ability to work on-site in Berlin, Germany (fully remote arrangements are not available for this role). Nice to Have: Experience collaborating with product leadership to shape product direction. Background in enterprise SaaS or B2B AI tooling. Compensation & Benefits Salary: €66,000 – €120,000 per year, depending on experience. Visa sponsorship available. Early-stage equity opportunity at a well-backed AI company. Location This role is on-site in Berlin, Germany . Candidates must be willing to work in-person; fully remote arrangements are not offered.