Senior Fullstack Engineer

About the Role Join a B2B AI communications SaaS team as a Senior Fullstack Engineer, building voice AI products for businesses. You will own customer-facing features from concept through deployment and help shape the product roadmap. What You'll Do Build and evolve full-stack product features using NestJS, TypeScript, React, and Node.js. Take features from discovery and prototyping through production release. Engage with customers through support, feedback sessions, and user testing to understand their needs. Prioritize and scope work around immediate customer value, then iterate based on feedback. Contribute to feature prioritization and product roadmap decisions. Ship improvements frequently while maintaining focus on reliable, customer-facing software. What We're Looking For At least 5 years of full-stack engineering experience building and delivering SaaS products. Strong hands-on experience across both backend and frontend engineering, including TypeScript, React, and Node.js; NestJS experience is preferred. Experience owning end-to-end features, from technical and product decisions through deployment. Experience working directly with customers and using feedback, experiments, and metrics to inform product decisions. Native German proficiency and fluent English. Experience with AI or LLM integrations, fast-moving product teams, or European AI and data privacy considerations is useful. Compensation & Benefits Annual base salary: €80,000 to €120,000. Visa sponsorship is not available. Location Remote within Germany.