Principal Machine Learning Engineer, Ads & Promos Delivery

What you'll do

• Design and build next-generation AI-first ranking systems using state-of-the-art techniques.
• Set long-term technical vision and drive cross-team alignment for AI projects.
• Own the full lifecycle of ML models from research to production, ensuring scalability.
• Evaluate ML models rigorously through offline analysis and online experimentation.
• Translate cutting-edge research into scalable, production-ready systems for ads relevance.

What we're looking for

• 5+ years of experience building and scaling ML/AI models for large-scale products.
• Deep expertise in deep learning, LLMs, information retrieval, ranking systems, or NLP.
• Strong programming skills in Python, Java, or C++ with ML frameworks like PyTorch or TensorFlow.
• Extensive experience across the full ML lifecycle from data analysis to model deployment.
• Proven ability to collaborate and communicate effectively in fast-paced cross-functional teams.
• Experience designing and deploying LLM-based systems including prompt engineering and RAG architectures.
• Demonstrated contributions to the ML community through open-source projects, publications, or applied research.