Booking.com is seeking a Principal Software Engineer I – Data & AI – Marketplace to set the technical vision for the AI Application Platform and the intelligence products it enables. This role requires deep domain knowledge in data and AI engineering, spanning data pipelines, feature stores, model serving, experimentation, and outcome measurement. You will collaborate with product, data science, machine learning, and platform engineering teams to deliver scalable, high-availability AI capabilities that drive measurable business impact. Responsibilities include defining engineering patterns and standards across the full lifecycle, guiding architectural decisions, and serving as a technical lead on cross-functional projects. You will transform concepts into concrete artifacts, align stakeholders, and coach other engineers while enforcing strong technical standards. Requirements include 10+ years of software development experience with at least 3 years in a technical leadership role, hands-on experience building and operating production ML/AI systems (including GenAI and foundation models in production), and fluency across the data and AI stack. This role is based in Amsterdam, Netherlands with a hybrid work arrangement.

Booking.com is seeking a Principal Software Engineer I – Data & AI – Marketplace to set the technical vision for the AI Application Platform and the intelligence products it enables. This role requires deep domain knowledge in data and AI engineering, spanning data pipelines, feature stores, model serving, experimentation, and outcome measurement. You will collaborate with product, data science, machine learning, and platform engineering teams to deliver scalable, high-availability AI capabilities that drive measurable business impact. Responsibilities include defining engineering patterns and standards across the full lifecycle, guiding architectural decisions, and serving as a technical lead on cross-functional projects. You will transform concepts into concrete artifacts, align stakeholders, and coach other engineers while enforcing strong technical standards. Requirements include 10+ years of software development experience with at least 3 years in a technical leadership role, hands-on experience building and operating production ML/AI systems (including GenAI and foundation models in production), and fluency across the data and AI stack. This role is based in Amsterdam, Netherlands with a hybrid work arrangement.