Core Engine Programmer
IOI
- Location
- Hybrid (Brighton, Brighton, UK · Barcelona, Barcelona, ES)
- Employment
- Full-time
- Level
- Mid Level
About the role
IO Interactive is an independent game developer behind the HITMAN franchise, seeking a Core Engine Programmer to architect and evolve their proprietary Glacier engine. This role involves designing core systems, optimizing performance, and shaping the technical roadmap for ambitious upcoming titles.
Skills
Full job details
IO Interactive is seeking an experienced Core Engine Programmer to join our Engine team as we develop the technical foundation for ambitious upcoming projects. This role is central to our platform strategy, requiring deep expertise in engine architecture and systems design.
Our Glacier engine is powering the next generation of ambitious titles, and we need a seasoned engine programmer to lead the evolution of our core systems. This isn't about maintaining legacy code, it's about architecting the engine infrastructure that will scale across multiple high-profile projects for years to come. You'll have direct input into our technical roadmap, ownership over critical systems, and the autonomy to make decisions that shape how our engine grows. This is a role for someone who thrives on solving complex architectural challenges at scale.
What you will do
Design, develop, and maintain core engine systems including entity management, resource systems, and engine infrastructure
Play a key role in evolving our proprietary Glacier engine for current and future game projects
Write maintainable and robust C++ code that will support multiple titles across multiple console generations
Optimize for memory and performance across the entire codebase, with focus on scalability and platform constraints
Develop, adopt, and maintain profiling and diagnostic tools to support studio-wide performance culture
Collaborate with the Technical Director and Engine team to establish and maintain the technical roadmap
Support platform expansion initiatives and port core systems to new technologies and platforms
Mentor junior colleagues and foster knowledge-sharing across all technical domains
Strengthen and enforce studio coding practices and standards
Who you are
3+ years of engine programming experience using C++
Shipped at least 1 AAA title as an Engine Programmer
Strong knowledge of algorithms, data structures, memory management, and multithreading
A master of debugging complex, cross-system issues in large codebases
Console development experience with understanding of platform-specific constraints
Proven ability to break down tasks, estimate scope, and assess work across engineering
Excellent communicator who can work effectively in a distributed, international team
Why join us
We are actively investing in our engine platform to support multiple ambitious projects. You'll work with world-class engineers on problems that directly impact the player experience, have autonomy over critical technical decisions, and shape the future of our Glacier engine across the studio.
About IO Interactive
IO Interactive is an independent videogame development and publishing company with studios in Copenhagen, Malmö, Barcelona, and Brighton. As the creative force behind some of the most talked-about multiplatform video games in the last decade, we are committed to creating unforgettable characters and experiences – all powered by our award-winning, proprietary Glacier technology.
IOI is a studio that values in-person collaboration. Being together helps us focus our collective energy on our immediate goals. For us, being both in-office as well as connected across our studios helps us integrate our teams faster, strengthen relationships, and improve knowledge-sharing. We believe that the more time we spend together, the more quality and progress we achieve for our games and players.
We know that to achieve those goals, we need courage, talented people and a great working environment – and we do our utmost to have all of that. Across our multiple studios, we’re working on several projects. Crucially though, we’re all one team. We value the work and impact that each person brings to the table and we actively encourage new ideas, whilst listening to your insights along the way.
We have a dedicated team of People Managers, who look after you as an individual and as an employee. With more than 40 nationalities, we know that everyone is different and we are proud to have a reputation for being a friendly workplace with highly-talent people.