We're working with an established international iGaming business that develops online slot games across regulated markets globally. The business is now investing in the next generation of its game-engine technology, with a focus on modernising the underlying architecture, improving mathematical validation and building a new slot game engine from the ground up.
This hire will play a key role in shaping that next engine and the technical direction of the platform.
You'll join a small specialist team alongside another Game Engine Engineer and a Game Mathematician, with significant ownership across architecture, mathematical validation and delivery.
What you'll be doing
Designing and building a new slot game engine from scratch
Owning game-engine projects end to end
Working closely with mathematicians to turn mathematical models into production software
Building simulations to validate game behaviour and expected outcomes
Working with RTP, RNG, probability models and payout logic
Comparing production data against simulations and expected mathematical behaviour




Investigating discrepancies and improving engine architecture
Helping define the technical direction of future game-engine development
What they're looking for
Strong software engineering experience
Proven experience building or owning game-engine, simulation-engine or similarly complex backend systems
Ideally, experience building engine technology from scratch
Strong understanding of mathematical or probability-driven systems
Experience with simulations, RTP, RNG, probability or payout mechanics
High ownership and evidence of delivering complex projects end to end
Ability to work closely with mathematicians and translate mathematical requirements into reliable software
Direct experience within slots, casino or iGaming is highly desirable
The technology stack is C++.
This is not a Unity, Unreal, graphics or gameplay-development role . The focus is on the underlying engine responsible for game logic, mathematics, s

📌 Senior Software Engineer (España)
🏢 Stott and May
📍 España