Who are we?

Hypersonic Labs is building HELIX, the ultimate open-world multiplayer sandbox. We are a remote-first, international team and have raised $11M from top gaming VCs.

About the role

As a Senior Gameplay Software Engineer, you will take the lead in developing core gameplay systems while supporting our UGC platform. You’ll work closely with Lua scripters to provide a seamless experience for creators, ensuring they have the tools needed to build complex, engaging multiplayer games. Your focus will also include ensuring the platform is scalable, optimized for cross-platform play, and ready for deployment on consoles.

This is a remote position, open to candidates who are based in the UK and Europe.

What You Will Be Doing

• Lead the development of core gameplay systems, including character movement, physics, AI, and player interaction mechanics.

• Collaborate with Lua scripters to integrate and enhance UGC gameplay mechanics, ensuring creators can easily build and modify game systems.

• Optimize multiplayer systems for performance, scalability, and real-time synchronization across large player bases.

• Support UGC development by creating modular gameplay systems that are easily accessible and customizable through Lua scripting.

• Build modular, reusable code to empower creators and improve the scalability of the platform.

• Ensure cross-platform compatibility, including preparation for deployment on current-generation consoles (PlayStation 5, Xbox Series X|S).

• Work with the UI/UX team to provide intuitive interfaces for game creators to build and interact with UGC content.

• Debug and optimize gameplay code to tackle performance bottlenecks and improve overall multiplayer experiences.

• Stay current with the latest Unreal Engine 5 advancements, integrating new technologies to enhance UGC creation tools.

What We Will Need From You

• Experience in game development, focusing on gameplay and multiplayer systems.

• Expertise in Unreal Engine (preferably Unreal Engine 5), including proficiency in Blueprints and C++.

• Experience with UGC platforms and the development of systems that support player-created content, especially with Lua scripting.

• Strong understanding of multiplayer networking and synchronization, including client/server architecture.

• Experience working with AI systems, physics, and player interaction mechanics, such as inventories or in-game economies.

• Ability to write clean, modular, and maintainable code with an emphasis on performance and scalability.

• Familiarity with console development and optimizing performance for current-generation gaming consoles.

Nice to have

• Experience working with user-generated content (UGC) platforms or creator driven tools.

• Expertise in performance optimization for large, open-world multiplayer environments.

• Familiarity with role-playing mechanics, progression systems, or in-game economies.

• Passion for gaming and a drive to create powerful tools that empower a global community of creator