Senior Data Scientist

Zeta Global’s technology platform supports a real-time bidding system that handles over 100 billion events every day, a reporting system that aggregates and analyzes terabytes of data in real-time, and a learning system that applies machine learning and artificial intelligence techniques to over 40 petabytes of data. These systems work in harmony to serve the right advertisement to the right user at the right time.

Responsibilities

The Artificial Intelligence and Machine Learning team researches and develops the algorithms and models that make our software intelligent, as well as designs, implements, and maintains the code that powers our production systems. Some of the problems we work on include:

• Propensity Modelling: Use rich user data to make predictions, handle rare conversion events (e.g., purchasing a car), and address cold start problems.
• Bidding Strategies: Translate click or conversion scores into bids for first-price, second-price, or dynamic-floor auctions, incorporating pacing for time-based and holiday-specific variations.
• A/B Testing: Ensure fair comparisons, determine statistical significance, and weigh results across multiple campaigns.
• CLTV & Churn Prediction: Define target variables for churn events and translate customer journeys into useful model features.

Requirements

• Fluent in Python and SQL.
• Ability to write clean, concise, modular, and testable code.
• Industry experience developing and deploying practical machine learning models.
• Experience building enterprise-grade machine learning and data platforms.
• Excellent oral and written communication in English, with a passion for collaborating with other engineers.
• Independent engineer capable of owning projects from idea to design and final implementation.

Qualifications

• Preferably a Master’s degree in Science or Engineering (e.g., Computer Science, Mathematics, Physics, Statistics).

Nice to Have

• Experience with build automation technologies like GitLab CI.
• Experience with orchestration technologies like Docker and Kubernetes.
• Experience building HTTP and gRPC APIs.
• Experience with services like Spark and HDFS.
• Experience in an e-commerce or digital advertising technology business.
• Familiarity with agile methodologies and working in a remote & asynchronous team.

About Zeta Global

Zeta Global is a data-powered marketing technology company with a heritage of innovation and industry leadership. Founded in 2007 by entrepreneur David A. Steinberg and John Sculley, former CEO of Apple Inc and Pepsi-Cola, the company combines the industry’s 3rd largest proprietary data set (2.4B+ identities) with Artificial Intelligence to unlock consumer intent, personalize experiences, and help clients drive business growth. Our technology runs on the Zeta Marketing Platform, which powers end-to-end marketing programs for some of the world’s leading brands. With expertise across all digital marketing channels—Email, Display, Social, Search, and Mobile—Zeta orchestrates acquisition and engagement programs that deliver scalable, repeatable, and sustainable results.