Sr. Staff Software Engineer, Pinterest Assistant

Responsibilities

• Define and drive the technical vision and architecture for the backend systems powering Pinterest Assistant, ensuring they scale reliably as the product reaches millions of users.
• Lead the design and implementation of the core Assistant platform including orchestration, memory and personalization, context management, APIs, tool integrations, and backend infrastructure.
• Drive technical strategy, identifying foundational platform investments that unlock new Assistant capabilities while improving developer velocity, reliability, and scalability.
• Partner closely with Product
• Design, Frontend engineers, ML engineers, and Infrastructure teams to build a deeply personalized, multimodal conversational experience.
• Shape the architecture for AI-powered applications, including retrieval, context assembly, tool execution, memory, and model orchestration, in partnership with ML teams.
• Establish engineering best practices for production LLM and agent systems, including observability, logging, evals, safety mechanisms, rollout strategies, and incident response.
• Mentor engineers, raising the technical bar through architecture reviews, technical guidance, and thoughtful engineering leadership.
• Navigate ambiguity and make pragmatic architectural decisions that balance rapid product iteration with long-term maintainability.
• Influence technical direction beyond the immediate team by collaborating across teams and helping shape Pinterest’s broader AI platform strategy.

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