Principal Applied Scientist

The opportunityAt Unity, we are expanding beyond real-time 3D creation into intelligent, enterprise-grade agentic systems that power complex workflows. We are building next-generation AI agents that are adaptive, context-aware, and capable of long-horizon reasoning across large-scale environments and tools.

We are looking for a Principal Applied Scientist to lead research and development in agentic AI systems for enterprise-level workflow automation and augmentation. This role will focus on context engineering, persistent memory architectures, and retrieval systems that enable AI agents to operate reliably across long-running, multi-step tasks.

You will help define how scalable, production-ready AI agents reason, remember, and act within complex enterprise environments — shaping Unity’s long-term agent ecosystem for creators and enterprise customers alike.

This role is ideal for someone passionate about long-context reasoning, structured memory systems, retrieval-augmented architectures, and the design of resilient, continuously learning agents.

What you'll be doing

• Lead the design of enterprise-grade agentic AI systems capable of long-horizon reasoning, multi-step planning, and autonomous workflow execution, translating advanced research into scalable production solutions.


• Architect and advance context engineering and memory frameworks, including persistent, episodic, and semantic memory systems, retrieval-augmented generation (RAG), and long-context optimization strategies that balance accuracy, latency, and cost.


• Build and evaluate large-scale AI models in production, with deep expertise in multimodal or LLM-based systems, retrieval pipelines, and environment-grounded reasoning using modern ML frameworks (e.g., PyTorch, TensorFlow).


• Drive cross-functional impact and technical leadership, defining evaluation benchmarks, ensuring system reliability and governance readiness, mentoring senior talent, and shaping the long-term vision for Unity’s enterprise AI ecosystem.

What we're looking for

• Advanced academic or equivalent industry expertise in Computer Science, Machine Learning, AI, or related fields, with deep specialization in agentic AI systems, long-horizon reasoning, and context management.


• Strong architectural experience in memory and retrieval systems, including persistent context frameworks, RAG pipelines, knowledge-grounded AI, and scalable multi-session agent behavior design.


• Proven production experience building and deploying large-scale models, with strong proficiency in Python and modern ML frameworks (e.g., PyTorch, TensorFlow, JAX), and a clear understanding of enterprise AI trade-offs (latency, cost, reliability, governance, observability).


• Demonstrated technical leadership and cross-functional collaboration, including designing evaluation frameworks for reasoning accuracy and agent reliability, and partnering effectively with engineering, product, and enterprise stakeholders.

You Might Also Have

• Experience building enterprise AI copilots or workflow automation agents, with a strong foundation in distributed systems, large-scale infrastructure, and advanced architectures such as vector databases, knowledge graphs, hybrid search, reinforcement learning, planning systems, or tool-using agents.


• Experience designing production-ready AI systems for enterprise environments, including compliance, privacy, governance, and reliability considerations, with a strong passion for building scalable AI that augments human productivity.

Additional information

• Relocation support is not available for this position


• Work visa/immigration sponsorship is not available for this position

Life at UnityWe 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 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 an equal opportunity employer committed to fostering an inclusive, innovative environment with the best employees. Therefore, we provide employment opportunities without regard to age, race, color, ancestry, national origin, disability, gender, or any other protected status in accordance with applicable law. 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.

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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