Principal Software Engineer

ZoomInfo is where careers accelerate, and they are seeking a Principal Engineer for their Advertising, Company Intelligence, and Intent team. This role involves designing and implementing core systems for a real-time marketing platform, focusing on high-throughput ad infrastructure, identity resolution, and intelligent systems enhanced by LLMs.

Responsibilities:

• Design and build distributed systems that process, enrich, and respond to billions of behavioral events per day in real time
• Develop high-performance APIs and services that support advertising, identity, and intent features across the Marketing Platform
• Leverage machine learning and large language models (LLMs) to analyze behavioral data, classify content, extract signals, and enable intelligent decision-making
• Build intelligent agents using frameworks like LangGraph or MCP to reason over data and power user-facing insights
• Design and operate data pipelines using tools like Kafka, Kinesis, and ClickHouse to support both streaming and batch workloads
• Drive quality, performance, scalability, and observability across all systems you own
• Collaborate cross-functionally with product managers, data scientists, and engineers to deliver customer-facing features and internal tooling
• Contribute to technical leadership and mentorship of teammates