Principal Machine Learning Engineer, Unity
$239.1-323.4k
Game development platform
Open for applications
Game development platform
1001+ employees
Open for applications
$239.1-323.4k
1001+ employees
Company mission
Democratize game development and enable everyone to create rich interactive content.
Role
Who you are
- Advanced degree (Ph.D. preferred) in Computer Science, Machine Learning, Statistics, or a related field—or equivalent practical experience
- Proven track record of delivering impactful ML solutions in production, particularly in large-scale, high-throughput systems (e.g., ad tech, recommendation systems, marketplaces)
- Deep expertise in machine learning frameworks and tools (e.g., PyTorch, TensorFlow, etc.) and a strong understanding of modern model architectures
- Strong analytical and problem-solving skills, with the ability to formulate and validate complex hypotheses using large datasets
- Excellent communication skills, capable of articulating technical concepts to both technical and non-technical audiences
- Experience leading ML initiatives and mentoring other engineers or researchers
- Familiarity with data pipelines, model ops, and cloud ML deployment
What the job involves
- We are seeking a Principal Machine Learning Engineer to help define and implement the next generation of ML systems for Unity Ads.
- In this senior role, you will lead the design, development, and deployment of machine learning models that power our ad network, marketplace, and audience targeting tools.
- You’ll also play a key role in shaping our overall ML strategy, collaborating closely with product, engineering, and research teams
- Architect and deploy scalable, production-grade machine learning systems to optimize ad delivery, bidding strategies, and user engagement
- Drive the technical direction of ML initiatives—identifying key opportunities, defining roadmaps, and mentoring team members across disciplines
- Translate state-of-the-art research into practical solutions, ensuring Unity remains at the forefront of ML performance and innovation in the ad tech space
- Partner cross-functionally with data science, product, and engineering teams to align ML capabilities with strategic business goals
- Lead experimental design, performance evaluation, and model tuning for high-impact use cases
- Define requirements for data infrastructure, tooling, and processes to support advanced ML initiatives
- Promote best practices for model development, testing, deployment, and monitoring
Our take
Unity Technologies is one of the world's leading game engines. The platform helps artists and developers in gaming to render 3D worlds in real time.
In recent years Unity has expanded its scope by bringing its technology to new industries, including car companies, and film and TV studios who are using Unity to manage production virtually. Having completed an IPO in 2020, Unity’s capabilities are also being used by companies such as Apple and Android to create better AR experiences.
In 2021, 72% of the top 1000 mobile games and 50% of games across mobile, PC and console were made with Unity. Having completed substantial post-IPO funding in 2025, the company now operates on over 20 different platforms, is active in 190+ countries and territories across the world and continues to develop its technologies and capabilities.
Freddie
Company Specialist at Welcome to the Jungle
Insights
4% employee growth in 12 months
Company
Funding (last 2 of 7 rounds)
May 2019
$125m
SERIES E
Jun 2018
$145m
SERIES D
Total funding: $893.5m
Company HQ
Yerba Buena, San Francisco, CA
Leadership
Matthew Bromberg
(CEO)Currently on the Board of Directors for Bumble. Previously Senior Advisor at Blackstone, was on the Board of Directors at Monzo and was the COO of Zynga.
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