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Engineering

Game Developer mock interview

Programs the systems and gameplay that make video games work and feel fun. Day to day they build mechanics in an engine like Unity or Unreal, work with designers and artists, optimise performance and fix bugs found in playtesting. A good interview for this role tests whether you can show that work, not just name it.

Ava, the AI interviewer, will ask you questions on game engine proficiency, gameplay programming, performance & optimisation and math for games and 4 more skills, follow up on what you say, and finish with a report that quotes your own words back to you.

Start a game developer practice interview

Skills assessed in a game developer interview

  • Game engine proficiency

    Role skill

    Speaks fluently about a major engine's architecture, tools and limits, with examples of shipped or substantial projects.

  • Gameplay programming

    Role skill

    Builds responsive, tunable mechanics, structures code so designers can iterate, and talks about game feel.

  • Performance & optimisation

    Role skill

    Profiles on target hardware, understands frame budgets, draw calls, memory and garbage collection, and fixes the real bottleneck.

  • Math for games

    Role skill

    Uses vectors, interpolation, rotations and basic physics correctly and explains them intuitively.

  • Debugging & tools

    Role skill

    Reproduces rare bugs methodically using logging, replays and debug views, and builds tools that speed up the team.

  • Multiplayer & networking

    Role skill

    Explains latency, client prediction, server authority and reconciliation, and thinks about cheating and bandwidth.

  • Collaboration with designers & artists

    Behavioural

    Translates creative goals into technical solutions, offers cheaper alternatives respectfully and keeps creative partners in the loop.

  • Iteration & feedback

    Behavioural

    Treats playtest feedback as valuable, changes direction without ego, and iterates quickly on what is not fun.

Sample game developer interview questions

8 of the 13 questions Ava can ask for this role, one or more per skill. In a real session she adapts them to your level and follows up on your answers.

  1. Q1Game engine proficiencyEntry level

    Which game engine have you used most, such as Unity or Unreal, and what's something you built in it that you're proud of?

    A strong answer: Hands-on familiarity with the engine's main concepts, a concrete project, their specific contribution, and something they learned.

  2. Q2Math for gamesEntry level

    How would you make an enemy turn to face the player smoothly instead of snapping around instantly?

    A strong answer: Finding the direction vector, interpolating rotation over time scaled by frame time, a turn speed limit, and awareness of quaternions or angle wrap-around.

  3. Q3Gameplay programmingEntry level

    How would you make a character's jump feel responsive and fun rather than floaty? What would you tweak?

    A strong answer: Gravity and fall speed, variable jump height, coyote time, input buffering, quick acceleration, and exposing values for tuning.

  4. Q4Performance & optimisationMid level

    Your game drops below its target frame rate in one busy level. How do you find out what's causing it?

    A strong answer: Profiling on target hardware, checking whether it's processor or graphics bound, looking at draw calls, physics, scripts and garbage collection spikes, and fixing the biggest cost first.

  5. Q5Debugging & toolsMid level

    Tell me about a tool or editor extension you built to make your team faster. What problem did it solve?

    A strong answer: A real pain point, a practical solution, how users adopted it, and the time or bugs it saved.

  6. Q6Multiplayer & networkingMid level

    In a multiplayer game, how do you keep movement feeling responsive for a player with high latency while staying fair?

    A strong answer: Client-side prediction, server authority, reconciliation when they disagree, interpolation for other players, and lag compensation trade-offs.

  7. Q7Collaboration with designers & artistsAny level

    Tell me about a time a designer or artist wanted something that was technically expensive. How did you find a solution together?

    A strong answer: Understanding the creative goal, explaining constraints simply, prototyping options, offering cheaper ways to achieve the same feel, and reaching agreement.

  8. Q8Iteration & feedbackAny level

    Tell me about a feature that playtesting showed wasn't fun. What did you change?

    A strong answer: Openness to feedback, finding the underlying reason, quick experiments, and being willing to cut or rework their own work.

What a strong game developer answer looks like

  • Game engine proficiency

    Speaks fluently about a major engine's architecture, tools and limits, with examples of shipped or substantial projects.

  • Gameplay programming

    Builds responsive, tunable mechanics, structures code so designers can iterate, and talks about game feel.

  • Collaboration with designers & artists

    Translates creative goals into technical solutions, offers cheaper alternatives respectfully and keeps creative partners in the loop.

How the practice works

  1. Step 1

    Choose your level

    Pick intern through lead. The game developer question bank is labelled for 3 entry-level, 5 mid-level and 3 senior questions (plus 2 for any level), and Ava leans toward the ones that fit.

  2. Step 2

    Answer out loud or by typing

    Ava asks 4 or 7 main questions, depending on the length you choose, such as the game engine proficiency question above. You can also add a short coding exercise. Typing is always available if you can't speak.

  3. Step 3

    Get feedback you can act on

    Each skill is scored against the evidence you gave, with the specific points from your answers. In practice mode you also get a check against the situation, task, action and result structure, a stronger version of each answer built only from what you said, and what to practise next.

Try the game developer interview

Frequently asked questions

Which skills does the Game Developer mock interview cover?
Game engine proficiency, Gameplay programming, Performance & optimisation, Math for games, Debugging & tools, Multiplayer & networking, Collaboration with designers & artists and Iteration & feedback. The first 6 are role skills; collaboration with designers & artists and iteration & feedback are the behavioural part.
What kind of questions will I get?
Questions come from a bank of 13 written for this role. An entry-level one is “Which game engine have you used most, such as Unity or Unreal, and what's something you built in it that you're proud of?” and a senior one is “How would you protect a competitive online game from players who cheat by modifying their game client?”.
How will my performance & optimisation answer be judged?
Against what strong evidence looks like for that skill: profiles on target hardware, understands frame budgets, draw calls, memory and garbage collection, and fixes the real bottleneck. Anything you don't mention is not credited, and nothing is invented for you.
Is this useful for Unity developer or Unreal developer roles?
Yes. Unity developer, Unreal developer, game dev and game engineer are treated as close to game developer, so the same skills and questions apply. You can also type any other role on the setup screen.
Is it free, and do I need an account?
Starting practice is free, and a free account is required before the interview begins. The feedback is guidance for your preparation, not a prediction of any hiring decision.

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