tobspr Games

Principal C++ Engineer (Factory Simulation)

In short

Principal C++ Engineer role owning the factory simulation for a new co-op game built in Unreal Engine 5, with the simulation itself written in raw C++. The job centers on architecting a deterministic simulation that scales to hundreds of thousands of player-placed buildings, covering data layout, threading, serialization, and CPU performance budgets, while coordinating closely with the networking engineer and mentoring other engineers. Posted by tobspr Games, fully remote within Germany.

Factory simulation game
Principal | Negotiable salary | Full-time | Remote within Germany 🇩🇪
Description
We're looking for a Principal C++ Engineer to own the factory simulation of our next game. The game is built in Unreal Engine 5, but the simulation will be self-contained and written in raw C++.
Players will place hundreds of thousands of machines, belts, pipes, and more across a large world, and every one of them has to deterministically update on every player's device in a co-op session. You'll design that simulation module from the ground up as one of the first engineers on a new game team, working closely with the Engineering Team Lead and the Game Design department.
Responsibilities
•Design and build a deterministic factory simulation that scales to hundreds of thousands of player-placed buildings
•Own the sim architecture: data layout, tick model, threading, and serialisation format
•Work with the Networking Engineer so the sim and co-op are designed together, not bolted on later
•Set and meet the CPU performance budget for the sim on our minimum specification target
•Review code and mentor other engineers on C++ and architecture
Required Skills
•Experience in professional C++ environments where you have architected, implemented, and maintained performant modules which are built on by other engineers, and lived with the consequences of your design choices
•Deep knowledge of data-oriented design, multithreading, and performance, including CPU profiling and applying algorithmic complexity-based analysis to select the right data structures
•Built a deterministic or lockstep system, or can show how you'd approach one
•A track record of mentoring engineers and making architectural decisions in writing that others could follow and challenge
Nice to Have
•2+ shipped game titles
•Worked on a factory, automation or simulation-heavy game
•Worked in Unreal Engine, especially with Mass Entity or a custom ECS in Unreal
What we offer
•Fully Remote: We employ directly inside Germany
•Flexible working hours!
•Paid overtime, on the rare occasions it happens
•A hardware budget to ensure you have the ergonomic setup and hardware you need to work comfortably
•A monthly personal growth allowance for courses, books or other learning material
•Focus days to research or learn new skills
•A yearly team gathering to meet and collaborate in person
•A yearly salary review to keep your pay in line with the market, and an automatic increase of 2% per year

Stop applying.
Get referred.

$10 in free credits

In just 60 seconds, fully on autopilot — Eraldt's AI agents read your CV, map the roles you fit, find live vacancies and the people who can refer you, write personal emails, and get you referred.

This isn't an application: your CV doesn't go to the company, and we don't promise a referral for this exact role.

Discover who else lands interviews on autopilot