Sr. Software Development Engineer, Guidance & Personalization

Key job responsibilities

• Personalization at scale — building and maintaining structured models of advertiser behavior, goals, and preferences that update continuously across millions of accounts and inform real-time decisions
• Real-time ML inference — systems that evaluate and rank recommendations, guidance, and actions at high volume with tight latency constraints across distributed infrastructure
• Explainable AI systems — infrastructure that makes automated decisions auditable and legible to end users, not just to engineers. This includes stable data models for tracking decision inputs, surfacing confidence signals, and rendering explanations that advertisers can inspect and act on
• Multi-agent coordination — APIs and contracts that allow multiple specialized AI agents to contribute outputs into a unified experience, with quality enforcement at the delivery layer
• Event-driven data pipelines — high-volume ingestion, processing, and serving of advertising signals that feed both the ML models and the real-time recommendation systems

About the team

We're looking for a Sr. Software Development Engineer to join the Personalization & Guidance team. The team builds AI-native systems that make advertising more intelligent, transparent, and effective for advertisers.

Basic Qualifications

• 5+ years of non-internship professional software development experience
• 5+ years of programming with at least one software programming language experience
• 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
• Experience as a mentor, tech lead or leading an engineering team

Preferred Qualifications

• 5+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience
• Bachelor's degree in computer science or equivalent