The Senior Staff Engineer role in the Ads & Promos Delivery team focuses on leading the technical direction for AI-first experiences in ad ranking and relevance systems. This position involves designing and building advanced machine learning models to enhance the ads marketplace, ensuring that ads are selected and personalized effectively. The role requires collaboration across teams to translate research into production systems while maintaining strict performance standards. As DoorDash expands into new markets, this position offers a unique opportunity to influence the future of ad relevance using cutting-edge AI techniques.

• 5+ years of experience building, deploying, and scaling ML and AI models for large-scale, user-facing or data-intensive products.
• Proficiency in using AI coding tools in the full software development lifecycle.
• BS, MS, or PhD in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Deep expertise in one or more areas such as deep learning, large language models, or natural language processing.
• Strong programming skills in Python, Java, or C++, with hands-on experience using ML frameworks.

• Apply state-of-the-art machine learning and LLM techniques to various problems.
• Evaluate ML and LLM models through offline analysis and online experimentation.
• Own the full model lifecycle from research to production, including data analysis and model development.
• Collaborate closely with product managers, data scientists, and designers to enhance AI-driven systems.
• Stay updated on ML and AI innovations and translate research into scalable systems.