Senior Engineer, Engine

LEGO Digital Play · London Office

Senior Engineering Hybrid Posted 2026-08-19 Full time

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Senior Engineer, Engine - LEGO Digital Play

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"@type": "JobPosting",

"title": "Senior Engineer, Engine",

"description": " LEGO Digital Play will bring the LEGO Brand into digital entertainment in new, innovative, and wholly-owned ways. Our mission is to ensure the LEGO Brand remains as powerfully a part of children’s lives in the coming decades as it has ever been. We aim to reach every kid on the planet, their parents, and adult fans of LEGO—and provide them with meaningful, magical, and playful new experiences.

Central Technology is the engineering heart of LEGO Digital Play, a venture within the LEGO ecosystem dedicated to pioneering creative and joyful digital experiences. Our teams build the foundational platforms, tools, and capabilities that power LEGO s Digital Future. We work at the intersection of play, applied AI, and developer tooling to bring the LEGO Brand to a new generation of digital builders. It s a rare opportunity to shape something from the ground up within one of the world s most loved brands.

We are at the earliest phases of this new company, offering a unique opportunity to build a new entity for the world s most beloved and trusted brand. Our culture is open, collaborative, intellectually rigorous, and creatively vibrant.

Role Summary LEGO Digital Play is shaping the future of digital play by taking inspiration from the LEGO Brand’s System in Play and reimagining it for the digital world. Our portfolio is built on a foundation of safety that will ultimately inspire the builders of tomorrow.

We are looking for a Senior Engineer – Engine to help design and build our core runtime technology. This role is highly hands-on and focused on the implementation of critical engine systems, including simulation, performance optimization, rendering, runtime infrastructure across multiple environments, and the tooling that surrounds them Key Responsibilities Design and implement core engine systems, including runtime architecture, simulation systems, and performance-critical components, whether developing new systems or extending and integrating capabilities on top of existing game engines or engine technologies.

Develop and optimize simulation and physics systems supporting large-scale interactive experiences.

Build systems that support server-authoritative architectures, enabling efficient simulation across both client and backend environments.

Implement and optimize rendering and graphical systems across multiple platforms Contribute to the development of data-oriented engine systems, focusing on performance, scalability, and efficient memory usage.

Design and implement streaming systems for runtime code, assets, and world data.

Build and maintain the tooling that surrounds the engine — editors, inspectors, debuggers, profilers, build systems, and asset pipelines — treating internal engineering teams as first-class users and optimizing for their iteration speed.

Work across low-level and high-level programming environments, building performance-critical systems in low-level languages while enabling higher-level scripting and tooling layers for other engineering teams.

Collaborate closely with the broader platform engineering teams to ensure seamless integration between engine runtime and backend services.

Contribute to building a high-velocity engineering environment that enables rapid iteration on a platform through strong engineering practices such as automated testing, automated performance validation, continuous integration, and robust development pipelines.

Leverage and contribute to AI-powered development workflows, using AI-assisted coding, debugging, and prototyping techniques to accelerate development and improve engineering productivity.

Prototype and experiment with new engine technologies to validate architectural and technical decisions.

Contribute to a collaborative engineering culture where ideas are openly discussed and technical decisions are driven by shared ownership of the platform.

Required Qualifications Strong experience in software engineering within the gaming industry.

Strong experience developing game systems or low-level game technology, either building new engine components or extending capabilities on top of existing engines.

Proven, hands-on experience building engine and developer tooling — editors, asset and build pipelines, profilers, or debug and inspection tools — with a track record of measurably improving how quickly other engineers can work.

Expertise in systems programming, performance optimization, and multithreaded architectures.

Strong knowledge of game engine runtime systems, including rendering pipelines, simulation, or asset pipelines.

Experience implementing data-oriented architectures (ECS) and performance-critical engine systems.

Experience with physics engines or simulation systems used in real-time games.

Familiarity with server-authoritative multiplayer architectures and networked simulation models.

Experience optimizing CPU and GPU performance across different hardware platforms.

Experience working with multiple game engines (Unity, Unreal, proprietary engines, or similar), including their editor and tooling layers.

Strong debugging and profiling skills for complex runtime systems.

Experience working in high-velocity engineering environments using practices such as automated testing, continuous integration, and performance validation pipelines.

Ability to work effectively in collaborative engineering environments, contributing to open technical discussions and shared problem solving.

Preferred Qualifications Experience working on a LEGO Game or another major licensed-IP title.

Experience owning a toolchain used daily by a large engineering or content organization.

Experience shipping to console platforms and working within platform certification requirements.

Experience with web runtime targets such as WebAssembly, WebGL, or WebGPU.

Experience integrating scripting languages or sandboxed execution environments into an engine runtime.

Contributions to open-source engine, graphics, or tooling projects.

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LEGO Digital Play will bring the LEGO Brand into digital entertainment in new, innovative, and wholly-owned ways. Our mission is to ensure the LEGO Brand remains as powerfully a part of children’s lives in the coming decades as it has ever been. We aim to reach every kid on the planet, their parents, and adult fans of LEGO—and provide them with meaningful, magical, and playful new experiences.

Central Technology is the engineering heart of LEGO Digital Play, a venture within the LEGO ecosystem dedicated to pioneering creative and joyful digital experiences. Our teams build the foundational platforms, tools, and capabilities that power LEGO's Digital Future. We work at the intersection of play, applied AI, and developer tooling to bring the LEGO Brand to a new generation of digital builders. It's a rare opportunity to shape something from the ground up within one of the world's most loved brands.

We are at the earliest phases of this new company, offering a unique opportunity to build a new entity for the world's most beloved and trusted brand. Our culture is open, collaborative, intellectually rigorous, and creatively vibrant.