Senior Machine Learning Engineer

The opportunity
At Unity were shaping the future of real-time 3D development by enabling creators to harness intelligent autonomous systems. Our next-generation agentic AI - goal-directed adaptive and capable of reasoning and planning in dynamic environments - is transforming how games and simulations come to life.

Were looking for a Senior Machine Learning Engineer to lead the development of these foundational AI systems within the Unity engine empowering creators to build smarter more responsive in-game agents and simulations. Your work will directly drive innovation allowing developers and designers to integrate sophisticated AI behavior seamlessly into their worlds.

This role is perfect for someone passionate about pushing the boundaries of AI multi-agent systems reinforcement learning and intelligent decision-making in complex real-time environments.

What youll be doing

• Design implement and scale AI agents that assist in generating game code and executing goal-directed behaviors.
• Define orchestration logic for single- and multi-agent systems
• Develop reusable agentic frameworks - planning modules memory systems or policy adaptation layers - for creator extensibility.
• Lead high-impact initiatives including hierarchical reinforcement learning for scalable behaviors AI planning and goal inference frameworks for NPCs and simulations and agent memory and world modeling systems for persistent believable behavior.
• Collaborate across internal and external teams to unlock innovative use cases in gaming simulation and interactive storytelling.
• Contribute to the long-term vision and roadmap for Unitys agentic AI offerings ensuring modularity usability and performance across platforms.
• Establish and champion best practices for model quality simulation-based evaluation and ML/AI safety within real-time systems.

What were looking for

• Advanced degree (MS or Ph.D.) in Computer Science Machine Learning or a related field.
• 5 years of hands-on experience developing ML systems in production ideally within real-time or interactive environments.
• Experience with multi-agent systems orchestration or AI tool integration.
• Strong background in one or more of the following: LLM reinforcement learning decision-making under uncertainty AI planning or multi-agent systems.
• Proficiency in at least one general-purpose programming language (e.g. Python C Go Java) and familiarity with ML frameworks (e.g. PyTorch TensorFlow).
• Strong system design skills and the ability to architect performant scalable ML systems.
• Excellent communication and collaboration skills; ability to work effectively with cross-functional teams including engine developers designers and product managers.

You might also have

• Familiarity with game development workflows.
• Publications or open-source contributions in reinforcement learning agent-based modeling or related areas.
• Experience with behavior trees utility AI or hierarchical task planning.
• Passion for the gaming industry and AI applications in games.

Additional information

• Relocation support is not available for this position

Life at Unity
We offer a wide range of benefits designed to support employees well-being and work-life balance. You can read more about them on our career page.

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 1000 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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Required Experience:

Senior IC