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Interview Day Checklist — Night Before, Coding Framework, C++ Signals, Mindset

Interview day complete framework. Night before: review priority index, skim core topics, rehearse SAR stories, write LRU Cache + Thread-Safe Queue cold from memory. Morning: light review (SOLID one-liners + 8 pattern triggers), prepare 3 interviewer questions. Coding round 6 steps: 1. Listen (don't interrupt); 2. Clarify (input/constraints/edge cases); 3. Brute force first (show the progression); 4. Talk while coding (narrate reasoning); 5. State complexity unprompted; 6. Test edge cases (empty, single, negatives, duplicates). C++ fluency signals: const& params, auto& range-for, emplace_back, (int)v.size() cast, RAII with unique_ptr. When stuck: say what you know → simplify to smaller case → ask for direction (not answer). Self-correcting bugs out loud = strong senior signal. Mindset: 3 things — communication (clarity > correctness), decomposition, awareness. 'I am showing how I think, not taking a test.'

🔑 Key line

Night before: SAR stories + write LRU Cache + Thread-Safe Queue from memory. Coding round: listen → clarify (2min) → brute force → talk while coding → state complexity → test edge cases. C++: const&, auto& range-for, emplace_back, RAII. Mindset: communication > correctness; decompose the problem; self-correct out loud.

The code

// Interview Day Checklist — C++ Senior Engineer

// THE NIGHT BEFORE:
// ✓ Read 00_INDEX.md — know topic priority order
// ✓ Skim 01_cpp_core.md OOP + 02_multithreading.md deadlock section
// ✓ Re-read 3-4 leadership SAR stories (11_leadership_mentorship.md)
// ✓ Re-read architecture delivery framework (10_architecture_project_ownership.md)
// ✓ Write LRU Cache from memory without looking
// ✓ Write Thread-Safe Queue from memory without looking

// THE MORNING OF:
// ✓ Read SOLID + Singleton (05_design_patterns.md)
// ✓ Skim 8 patterns — recall Two Sum + Reverse Linked List solutions
// ✓ Prepare 3 questions to ask interviewer at the end

// DURING CODING ROUND:
// 1. LISTEN — let them finish the question, don't interrupt
// 2. CLARIFY — input type, constraints, edge cases, return type
//    'Is the input sorted? Can there be duplicates? Return if no solution?'
// 3. BRUTE FORCE FIRST — 'naive is O(n²), let me think about optimizing'
// 4. TALK WHILE CODING — say what you're doing, never silent
// 5. STATE COMPLEXITY — always, unprompted: 'O(n) time, O(n) space'
// 6. TEST YOUR CODE — walk through with an example before saying done
//    Test: empty input, single element, duplicates, negative numbers
// C++: mention RAII, avoid raw pointers, use const&, range-for

// QUESTIONS TO ASK INTERVIEWER (always have 3 ready):
// 'What does the codebase architecture look like for the component I'd own?'
// 'What's the biggest technical challenge the team faces right now?'
// 'How does the team handle on-call and production incidents?'
// 'What does success look like in the first 3-6 months?'
// 'What's the deployment frequency and CI/CD setup?'

// PRE-INTERVIEW MINDSET (say to yourself):
// 'I am not trying to pass a test — I am showing how I think.'
// 'A wrong approach explained well beats a right answer said silently.'
// 'Every clarification question signals experience, not uncertainty.'

// AFTER EACH ROUND (if there are multiple):
// Note: what topic they focused on, what you struggled with
// Don't overthink what you said — focus on the next round
// If you missed something: 'I should add...' if they haven't moved on

What this lesson walks through

01The night before — what to review and practice
02The morning of — light review + 3 questions ready
03During the coding round — 6-step framework
04C++ fluency signals — what to say and write
05Handling pressure — when you're stuck or made a mistake
06Interview mindset — the 3 things that matter most

The night before is for consolidation, not cramming. Read the priority index to remind yourself of the order interviewers care about. Re-read your 3-4 SAR leadership stories until they flow naturally. The most important practice: write LRU Cache and Thread-Safe Queue completely from memory. Don't look. These are asked so frequently that you should be able to write them in under 15 minutes cold. If you can't, practice them once more tonight.

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