Principal Research Engineer, Unreal Assistant

What You’ll Do: We’re looking for a Principal Al Engineer who builds products that integrate Al into Unreal Engine. You’ll design and ship the full stack of systems that let LLMs act inside the engine (from end to end, not just a single layer), bringing depth in game engine architecture, cloud services, and how LLMs actually work.

In this role, you will: Design and build LLM-driven agents and tools that operate directly inside Unreal Engine, including engine-side C++/Python tooling and editor scripting Architect and extend the cloud-hosted agent harness, services, and database that mediate between LLMs and the engine Work across the full stack (engine tooling, cloud backend, and the web UI used to drive and monitor agents) to ship end-to-end features Evaluate and integrate emerging LLM capabilities (tool use, multi-agent orchestration, context management) into Epic’s engine and pipeline tooling Define technical direction for the reliability, safety, and evaluation of LLM-driven engine automation Partner closely with engine, tools, and backend engineers, and mentor others on both game engine internals and LLM system design

What we’re looking for: Strong software engineering background with hands-on experience in a game engine (Unreal Engine strongly preferred), including engine architecture and tooling/editor scripting Practical experience building or shipping products powered by LLMs (agents, tool-calling, RAG, prompt/context engineering), or a strong conceptual understanding of how LLMs work Experience with cloud-native services and infrastructure: web APIs, databases, and service architecture and deployment Excellent programming skills across C++ (engine-side) and Python and/or a web backend language Ability to work full-stack and reason about tradeoffs across engine code, backend services, and a web front end Excellent written and verbal communication skills BS/MS in Computer Science or a related field EPIC JOB + EPIC BENEFITS = EPIC LIFE Our intent is to cover all things that are medically necessary and improve the quality of life. We pay 100% of the premiums for both you and your dependents. Our coverage includes Medical, Dental, a Vision HRA, Long Term Disability, Life Insurance & a 401k with competitive match. We also offer a robust mental well-being program through Modern Health, which provides free therapy and coaching for employees & dependents. Throughout the year we celebrate our employees with events and company-wide paid breaks. We offer unlimited PTO and sick time and recognize individuals for 7 years of employment with a paid sabbatical.

ABOUT US: Epic Games is a leading interactive entertainment company. For over 30 years we’ve been making award-winning games and engine technology that empowers others to make visually stunning games and 3D content that bring environments to life like never before. Epic’s award-winning Unreal Engine technology not only provides game developers the ability to build high-fidelity, interactive experiences for PC, console, mobile, and VR, it is also a tool being embraced by content creators across a variety of industries such as media and entertainment, automotive, and architectural design. As we continue to build our Engine technology and develop remarkable games, we strive to build teams of world-class talent. Like what you hear? Come be a part of something Epic! Epic Games deeply values diverse teams and an inclusive work culture, and we are proud to be an Equal Opportunity employer. Learn more about our Equal Employment Opportunity (EEO) Policy here. Note to Recruitment Agencies: Epic does not accept any unsolicited resumes or approaches from any unauthorized third party (including recruitment or placement agencies) (i.e., a third party with whom we do not have a negotiated and validly executed agreement). We will not pay any fees to any unauthorized third party. Further details on these matters can be found here.