About the Role Join a growing European B2B AI communications company as a Senior Fullstack Engineer, building customer-facing voice AI software. You will own features from early discovery through deployment and help shape product priorities through direct customer insight. What You'll Do • Build and evolve full-stack features using TypeScript, NestJS, Node.js, and React. • Take features from concept and prototyping through production deployment. • Engage with customers through support, feedback sessions, and user testing to understand their needs. • Break down opportunities into focused releases, gather feedback, and iterate quickly. • Contribute to feature prioritization and the voice AI product roadmap. • Ship software frequently while maintaining a strong focus on customer value. What We're Looking For • At least 5 years of full-stack engineering experience delivering SaaS products and end-to-end web features. • Production experience with TypeScript, React, and Node.js; NestJS experience is preferred. • Experience owning customer-facing software from technical decisions through release. • Native German proficiency and fluent English. • Strong product judgment, including customer discovery, feature prioritization, and using feedback or metrics to guide decisions. • Comfort working in a fast-moving environment with frequent releases and direct customer interaction. • Experience with LLM integrations, early-stage startups, or European AI compliance considerations is a plus. Compensation & Benefits Base salary: €80,000 to €120,000 annually. Visa sponsorship is not available. Location Remote within Germany.