Senior Staff Software Engineer

What you'll do

• Define and drive the technical vision and architecture for backend systems powering Pinterest Assistant.
• Lead the design and implementation of core platform components including orchestration, memory, and personalization.
• Identify foundational platform investments to improve developer velocity, reliability, and scalability.
• Shape the architecture for AI-powered applications including retrieval, context assembly, and model orchestration.
• Establish engineering best practices for production LLM and agent systems, including observability and safety mechanisms.
• Mentor engineers and raise the technical bar through architecture reviews and technical guidance.
• Influence the broader AI platform strategy by collaborating across multiple engineering and product teams.
• Apply latest advances in LLMs and agentic systems to consumer product development.

What we're looking for

• Bachelor’s degree in a relevant field such as computer science or equivalent experience.
• 10+ years of backend software engineering experience leading large, ambiguous systems for consumer experiences as a senior IC.
• 3+ years of experience as a technical lead driving architecture and development of large-scale distributed backend systems.
• Strong backend engineering experience in Python, TypeScript, Node, or similar languages and ecosystems.
• Experience building platforms or foundational infrastructure that enables product teams to move faster.
• Strong understanding of modern model-driven systems and experience partnering with machine learning engineers on AI-powered products.
• Strong leadership, communication, and cross-functional collaboration skills.
• Experience building AI-powered or LLM-based products at scale (preferred).