Multiplayer Programmer

2 Hours ago • All levels • Game Programmer

Job Summary

Job Description

IO Interactive seeks a Multiplayer Programmer to enhance their in-house Glacier engine by adding multiplayer capabilities. Responsibilities include designing and implementing network/multiplayer features, collaborating with AI and gameplay teams, working with the online team on backend infrastructure, and building/maintaining the network layer. The role involves working on projects like Project 007, Project Fantasy, and Hitman, requiring experience in software/engine or multiplayer/network programming and solid C/C++ knowledge. Understanding of multiplayer technology concepts (firewall traversal, data compression, etc.) and experience with large codebases is crucial.
Must have:
  • Multiplayer game development experience
  • Solid C/C++ programming skills
  • Understanding of multiplayer technologies
  • Experience with large codebases
  • Collaboration with cross-functional teams

Job Details

IO Interactive is seeking a Multiplayer programmer to help implement multiplayer functionalities in our Glacier Tech on our backbone team. We are currently working on three exciting game projects: Project 007, Project Fantasy and Hitman. Project 007 is a brand-new James Bond video game featuring an entirely original Bond story, and Project Fantasy is an ambitious new IP for console and PC that will revolutionize the online fantasy RPG genre.

As we work on these exciting projects, we need a skilled professional to assist us in the development of our state-of-the-art propriety game development engine, Glacier.

What you will do:

  • You will help enhance our in-house Glacier engine by adding multiplayer capabilities. This involves working on the design and implementation of network/multiplayer features for the engine and our games that need multiplayer support.
  • You’ll collaborate closely with the AI and gameplay teams to develop network-aware features and ensure smooth workflows and setups.
  • You will work with the online team to help create, manage, and monitor backend infrastructure.
  • Your team will be responsible for building and maintaining the network layer, ensuring the smooth delivery of multiplayer features.

Who you are:

    • You have experience as a software, engine, or multiplayer/network programmer and have contributed to the development of at least one multiplayer game.
    • You have solid knowledge of C/C++ programming.
    • You understand key multiplayer technology concepts like firewall traversal, data compression, encryption, distributed algorithms, latency compensation, and more.
    • You are comfortable working within large, existing codebases and integrating new technologies.


Who we are:


IO Interactive is an independent videogame development and publishing company with studios in Copenhagen, Malmö, Barcelona, Istanbul 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 50 nationalities, we know that everyone is different and we are proud to have a reputation for being a friendly workplace with highly-talent people.

Learn more about our Glacier engine.

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About The Company

IO Interactive is a 25-year old, AAA independent game studio, creators of HITMAN, Kane & Lynch, Mini Ninjas and Freedom Fighters. We are currently working on Project 007, Project Fantasy, and continue to develop Glacier, our award-winning game engine.


We are a diverse team of designers, producers, artists, programmers and operations supporters from 40+ different nationalities, working on cutting-edge technology and state-of-the-art game design.


The creative teams involved in producing our games are supported by our tech department, which delivers our own Glacier engine, and the incubation department, which helps the team to prototype new and exciting features, game mechanics, or even brand new IPs.


We know that the gaming world is in constant change – and so is IOI - but no matter what we do, we can assure you that it will not be boring.


IO Interactive was established in September 1998. The IO Interactive technology team consists of programmers, software engineers and mathematicians with considerable experience in game programming and 3D graphics. Graphic designers, artists and animators are recruited from the game and entertainment industry, as well as the best art schools from all over the world.

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