Senior C++ Engine Architect — Real-Time Simulation

Code Metal; Boston; On-site; GBP 104,000 - 149,000; Full time

Benefits offered by this job

Health care plan

401k matching

Relocation assistance

Hybrid or remote work

Paid time off

Job summary

Code Metal is seeking a senior engine developer to architect and optimize a large-scale C++ runtime for a next-generation wargaming platform. You will own core engine health, implement an ECS for massive simulations, and design robust interfaces for physics, AI, sensors, and environments.

The role blends systems programming with performance engineering in a hybrid/remote setting. You will lead architecture reviews, mentor engineers, and stay hands-on in profiling, debugging, and code reviews

Qualifications

• Extensive professional C++ development in performance-critical production software.
• Experience in game-engine or real-time simulation environments.
• Shipping at least one commercial game/engine or interactive product.
• Ownership of foundational engine systems beyond gameplay features.
• Experience with physics engines, ECS, or similar runtime architecture.
• Strong command of modern C++, including concurrency and low-level debugging.
• Understanding of data-oriented design and memory locality.
• Experience with engine loops, task systems, and runtime scheduling.
• Ability to optimize for CPU, memory, latency, and frame-time budgets.
• Experience with profiling and debugging tools to diagnose issues.

Responsibilities

• Architect and implement the core C++ runtime behind a large-scale wargaming platform.
• Own structure, performance, and health of a substantial engine codebase.
• Design and evolve an ECS for large numbers of simulation entities.
• Build data-oriented storage, lifecycle management, queries, and scheduling.
• Define engine interfaces for physics, AI, sensors, weapons, and environments.
• Create extension points for model developers without destabilizing core engine.
• Design simulation loops, time stepping, event processing, and deterministic replay.
• Develop multithreaded execution systems to safely parallelize workloads.
• Optimize memory layout, serialization, and data movement.
• Profile and improve CPU, memory, latency, throughput, and simulation rate.
• Build spatial indexing, collision candidate, and visibility infrastructure.
• Integrate external physics and mathematical models into runtime.
• Develop checkpointing, save/restore, and reproducible replay.
• Architect networked/distributed simulation including state transfer.
• Build tooling for inspection, debugging, and cost profiling.

Skills

C++ development

Game-engine development

Entity-Component System

Performance optimization

Profiling & debugging

Multithreading

API design

SDKs & extensions

C++ memory layouts

Distributed simulation

Tools

Profiling tools

CUDA / GPU compute

Job description

Code Metal is seeking a senior engine developer to architect and optimize a large-scale C++ runtime for a next-generation wargaming platform. You will own core engine health, implement an ECS for massive simulations, and design robust interfaces for physics, AI, sensors, and environments.

The role blends systems programming with performance engineering in a hybrid/remote setting. You will lead architecture reviews, mentor engineers, and stay hands-on in profiling, debugging, and code reviews