Senior Mobile Engine Engineer — C++ Optimization

Level.me; Austin, Northern (TX, KY); Hybrid; USD 150,000 - 230,000; Full time

Job summary

Level.me is seeking a senior C++ engine engineer to optimize a forked Godot-based engine for mobile and constrained hardware. You will determine essential functionality, remove what isn’t needed, and rewrite components to improve performance and binary size.

You’ll profile CPU/GPU/memory, work on memory allocators, rendering, and platform graphics APIs (iOS/Metal, Android/Vulkan/OpenGL ES), and collaborate across teams to push startup times and battery efficiency on a range of devices.

Qualifications

• Strong professional C++ experience.
• 7+ years of game engine or runtime experience, including comfort working below the gameplay/application layer.
• iOS and/or Android shipping experience is a plus.
• Experience with constrained hardware and a strong understanding of mobile hardware limitations.
• Experience profiling and optimizing for CPU, GPU, memory, loading, asset footprint, binary size, and frame rate.
• Experience modifying underlying engine or runtime technology (not just building features on top of one).
• Experience debugging device-specific problems across different hardware generations.
• Strong architecture and systems design skills.
• For candidates from Unity or Unreal backgrounds: demonstrated experience going below the engine's abstractions (e.g., native C/C++ work, IL2CPP, native plugins, or modified engine source), not solely C#/Blueprint-level mobile shipping experience.

Responsibilities

• Get inside our engine and determine what functionality is actually needed for our product, and what can be removed, rewritten, or optimized.
• Profile and optimize engine and runtime performance across CPU, GPU, memory, binary size, loading time, and (where relevant) battery/power.
• Modify underlying engine/runtime technology to meet mobile and constrained-hardware requirements.
• Work on memory allocators and footprint, asset streaming, lazy/asynchronous loading, texture compression, and rendering optimization.
• Address draw calls, GPU pipelines, shaders, CPU/GPU synchronization, multithreading, and frame pacing.
• Work with platform graphics APIs (iOS/Metal, Android/Vulkan/OpenGL ES) and debug device-specific problems.
• Improve startup and load time, binary/package size, and performance across a range of device generations and capabilities.
• Make architecture and systems design decisions specific to lower-powered hardware constraints.
• Actively experiment with and adopt AI-assisted development tools to improve engineering workflows.

Skills

C++

Game engine

7+ years

iOS

Android

Constrained hardware

Profiling

Optimization

Engine modification

Debugging

Architecture

Bare engine work

Godot

Unreal Engine

Power optimization

AI tools

Job description

Level.me is seeking a senior C++ engine engineer to optimize a forked Godot-based engine for mobile and constrained hardware. You will determine essential functionality, remove what isn’t needed, and rewrite components to improve performance and binary size.

You’ll profile CPU/GPU/memory, work on memory allocators, rendering, and platform graphics APIs (iOS/Metal, Android/Vulkan/OpenGL ES), and collaborate across teams to push startup times and battery efficiency on a range of devices.