Game Developer Interviews: How to Prepare for the Technical Rounds, the Design Talk and the Portfoli

Game studios interview differently from most software companies. A typical loop for a gameplay or engine programmer mixes classic coding questions with math, performance trade-offs, a portfolio walkthrough and often a conversation about design that feels closer to a creative review than a tech screen. Candidates who prepare only for LeetCode-style questions are often surprised by how much of the day is spent explaining why a mechanic feels the way it does. 1. Expect math that is applied, not abstract Vectors, dot and cross products, matrices, quaternions and basic collision checks come up constantly. Interviewers rarely want a proof. They want to hear you reason aloud: how would you find whether an enemy is in front of the player, how would you smoothly rotate a camera toward a target, what happens to your movement code if the frame rate drops to 20. Practise saying these answers out loud with a small sketch, because explaining the geometry clearly matters as much as getting the formula right. 2. Know where the frame budget goes Performance questions are almost guaranteed. Be ready to talk about a 16.6 ms frame, what eats into it, and how you would profile a stutter. Mention concrete tools you have used, such as Unity Profiler, Unreal Insights, RenderDoc or a platform profiler, and describe one real optimisation you made: what you measured, what you changed, and the before and after numbers. Object pooling, data-oriented layouts and avoiding allocations in the update loop are common talking points, but only if you can connect them to a problem you actually solved. 3. Treat the portfolio like a technical design document Most game interviews include a walkthrough of your own projects, from a shipped title or a game jam entry. Pick two projects and prepare a three-minute story for each: the goal, the hardest technical problem, the trade-off you chose and what you would do differently. Interviewers will interrupt and dig, so know your own code well enough to explain a system without opening it. 4. Prepare for the design conversation Even engineers are asked what game they are playing right now and what they would change about it. This is not small talk. Studios want people who think about the player experience. Choose a game in the studio's genre, have one specific mechanic you admire and one you would improve, and explain both in terms of player feel and implementation cost. 5. Do not ignore the behavioural round Crunch, cross-discipline work with artists and designers, and handling feedback on something you care about are all common themes. Short STAR-style stories about a disagreement with a designer, a feature you cut and a bug you found late will cover most of these questions. Getting help in the moment Game interviews move fast between math, code and design, and it is easy to lose the thread when an interviewer switches topics. Linkjob AI (https://linkjob.ai) gives real-time help during live job interviews and technical interviews, surfacing structure and key points while you talk, so you can stay clear and focused across very different rounds. Pair that with practice on the areas above and you will walk into a studio loop ready for whatever the next question is.