Senior Principal Engineer – AI Content Systems(all genders)

ABOUT BABBEL LABS Babbel Labs is building the future of language learning. We're an AI-first, independent company within the Babbel group, based in Berlin. Our teams bring AI, R&D and product together to ship experiences that set a new standard for how people learn. YOUR LEARNING JOURNEY IN THIS ROLE Babbel Labs is looking for a Senior Principal Engineer to define and drive the long-term technical strategy for AI-powered content systems across the organisation. This is a Senior Principal-level Individual Contributor role with organisation-wide scope. You will own the technical direction for AI-powered content systems and lead the work across multiple teams, products, and domains. You will combine strategic leadership with hands-on technical impact through architecture ownership, design reviews, coaching, prototyping, and direct involvement in the most complex challenges. Working across AI, content, product, and platform engineering, you will define the technical vision, establish shared standards, align teams around key decisions, and ensure that AI-enabled systems are scalable, reliable, secure, and measurable in their impact on both the business and learner outcomes. How You'll Make an Impact - Define and drive the long-term technical strategy for AI-powered content systems, ensuring alignment with Babbel Labs' business objectives and product vision. - Shape architectural direction across multiple teams and domains, making key decisions on platforms, tooling, AI infrastructure, and build-versus-buy approaches that will influence how AI capabilities are developed and scaled. - Lead the design of robust frameworks for AI evaluation, quality measurement, governance, observability, security, and operational reliability, enabling the responsible adoption of AI across the organisation. - Partner closely with senior leaders across Engineering, Product, Content, and Data to translate strategic priorities into executable technical roadmaps and investment decisions. - Ident