Principal Data Engineer – Machine Learning

The opportunity
Unity is the world’s leading platform for creating and operating interactive, real-time 3D (RT3D) content. Creators—ranging from game developers to architects, filmmakers, and automotive designers—use Unity to build immersive, cross-platform experiences for mobile, PC, console, and AR/VR devices. Over 70% of the top 1,000 mobile games are powered by Unity, and content built on the platform is downloaded more than 3.7 billion times per month.

We’re looking for a Principal Data Engineer with deep expertise in machine learning infrastructure to help shape the data systems behind our next generation of ML-driven products, including ads optimization and personalization. This is a high-impact role where you’ll design scalable pipelines, mentor other engineers, and partner closely with product and data science to turn ambitious ideas into production-ready systems.

What you'll be doing

• Design, build, and optimize real-time and batch data pipelines tailored for ML workflows.
• Partner with data scientists, product managers, and engineers to translate business goals into scalable data models and algorithms.
• Architect and maintain robust data infrastructure for ingestion, storage, processing, and serving ML-ready datasets.
• Lead technical initiatives, define best practices, and mentor engineers across teams.
• Ensure data security, privacy, and compliance across all ML and AdTech systems.

What we're looking for

• Robust experience in data engineering or ML infrastructure, ideally in large-scale or AdTech environments.
• Strong skills in Python, Scala, or Java; experience with Spark, Flink, Kafka, and distributed systems.
• Cloud experience, preferably GCP (AWS acceptable).
• Familiarity with ML frameworks like TensorFlow or PyTorch and deploying models at scale.
• Proven track record of technical leadership and cross-functional collaboration.

You might also have

• Experience translating ML research into scalable production systems.
• Knowledge of MLOps practices—model deployment, monitoring, and experimentation frameworks.
• Ability to communicate technical concepts to both technical and non-technical stakeholders.

Additional information

• Relocation support is not available for this position.

Life at Unity
Unity [NYSE: U] is the leading platform to create and grow games and interactive experiences. Creators, ranging from game developers to artists, architects, automotive designers, infrastructure experts, filmmakers, and more, use Unity to bring their imaginations to life across multiple platforms, from mobile, PC, and console, to spatial computing.

As of the third quarter of 2024, more than 70% of the top 1,000 mobile games were made with Unity, and in 2024, Made with Unity applications had an average of 3.7 billion downloads per month. For more information, please visit Unity.

Unity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrate our employees across age, race, color, ancestry, national origin, religion, disability, sex, gender identity or expression, sexual orientation, or any other protected status in accordance with applicable law. Our differences are strengths that enable us to support the growing and evolving needs of our customers, partners, and collaborators. If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience, please fill out this form to let us know.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

This position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.

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