Principal AI/ML Engineer

Responsibilities

• Lead the design and implementation of scalable, high-performance ML solutions for AdTech use cases, including real-time bidding and targeting.
• Architect end-to-end machine learning pipelines from data ingestion and training to real-time, low-latency inference.
• Define the technical roadmap for AI/ML, evaluating emerging technologies such as deep learning and Large Language Models (LLMs).
• Develop intelligent systems using AI agents and agentic workflows to automate campaign processes like audience segmentation and bid adjustments.
• Partner with engineering, product, and data science teams to translate marketing objectives into production-ready ML features.
• Ensure system robustness and stability in high-concurrency environments through rigorous monitoring and optimization.
• Provide technical mentorship and guidance to engineers and data scientists to foster engineering excellence.

Requirements

• 10+ years of experience in software engineering or data science.
• 3-5 years in a principal engineer or lead ML role, preferably within AdTech or MarTech.
• Deep expertise in the programmatic advertising ecosystem (DSP, RTB, SSP, and ad exchanges).
• Proficiency in Java, Go, or Python.
• Hands-on experience with machine learning frameworks such as PyTorch or TensorFlow.
• Strong experience with big data and streaming frameworks like Apache Spark, Kafka, or Hadoop.
• Expertise with cloud platforms, specifically AWS.
• Experience with both SQL and NoSQL databases (e.g., PostgreSQL, Cassandra, DynamoDB, Redis).
• Familiarity with containerization and orchestration using Docker and Kubernetes.

Preferred Qualifications

• Experience applying LLMs and generative AI to advertising (e.g., ad copy generation or creative optimization).
• Experience designing agentic workflows for autonomous decision-making in marketing.
• Expertise in ML model serving for latency-critical, real-time inference applications.
• Familiarity with modern data lake formats such as Apache Iceberg or Apache Hudi.
• Knowledge of microservices architecture and event-driven design patterns.

Benefits

• Unlimited PTO
• Excellent medical, dental, and vision coverage
• Employee Equity
• Employee Discounts, Virtual Wellness Classes, and Pet Insurance

About the Company

Zeta Global (NYSE: ZETA) is the AI-Powered Marketing Cloud that leverages advanced artificial intelligence and trillions of consumer signals to help marketers acquire, grow, and retain customers. Through the Zeta Marketing Platform (ZMP), we unify identity, intelligence, and omnichannel activation into a single, sophisticated platform.