Machine Coding Round: Evaluation Criteria
What interviewers look for when evaluating your machine coding round. Here is the breakdown.
Machine Coding Round: Evaluation Criteria
What do interviewers look for when evaluating your machine coding round? Here is the breakdown.
1. Functionality (40%)
- Does the component work as specified?
- Are all required features implemented?
- Does it handle user interactions correctly?
- Does it produce the correct output?
This is the most important criterion. A non-working solution scores low regardless of code quality.
2. Code Quality (25%)
- Is the code clean and readable?
- Is it modular (small functions, separated concerns)?
- Are variable names meaningful?
- Is there duplicate code?
- Is the code well-organized?
3. Edge Cases (15%)
- Did you handle empty input?
- Did you handle no results?
- Did you handle errors?
- Did you handle boundary conditions?
4. UI/UX (10%)
- Does it look good?
- Is it intuitive to use?
- Are there hover states, transitions?
- Is it responsive?
- Are there empty/loading/error states?
5. Approach (10%)
- How did you structure the code?
- Did you plan before coding?
- Did you communicate your approach?
- Did you make good trade-offs (time vs perfection)?
How to Score High
| Criterion | How to Score High |
|---|---|
| Functionality | Build all required features. Get it working. |
| Code quality | Small functions, clear names, separated concerns. |
| Edge cases | List and handle them. Show empty/error states. |
| UI/UX | Basic CSS, hover states, centered, responsive. |
| Approach | Plan first, communicate, build core first. |
Red Flags (Score Low)
- Non-working solution.
- One giant function.
- No edge case handling.
- No CSS (raw HTML).
- No testing.
- No communication.
The Takeaway
Evaluation: functionality (40%), code quality (25%), edge cases (15%), UI/UX (10%), approach (10%). Get it working first (functionality), write clean code (small functions, clear names), handle edge cases, add basic CSS, plan and communicate. A working, clean solution with edge cases and basic CSS scores high.
Functionality (40%, does it work?), code quality (25%, clean and modular?), edge cases (15%, did you handle them?), UI/UX (10%, looks good?), and approach (10%, how did you structure and communicate?).
Functionality. A non-working solution scores low regardless of code quality. Get the core working first, then improve code quality, add edge case handling, and polish the UI.
Build all required features (functionality), use small functions and clear names (code quality), handle edge cases, add basic CSS (UI/UX), and plan and communicate your approach. A working, clean solution with edge cases and basic CSS scores high.
Non-working solution, one giant function, no edge case handling, no CSS (raw HTML), no testing, and no communication with the interviewer. These indicate a weak candidate.
About 10% of the evaluation. It is not the most important, but a polished UI (basic CSS, hover states, centered, responsive) scores higher than raw HTML. Spend the last 10 minutes on CSS after functionality works.
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