Technical and Skills Interviews

Beyond Behavioral: Proving Your Abilities

Some roles require demonstrating specific skills during the interview:

  • Coding challenges for software engineers
  • Case studies for consultants and product managers
  • Writing tests for content roles
  • Design exercises for designers
  • Financial modeling for analysts
  • Presentations for sales roles

This chapter covers how to approach these assessments, regardless of your field.

Technical Interviews

What They Test

Knowledge: Do you know the fundamentals?

Problem-solving: Can you work through unfamiliar challenges?

Process: How do you approach problems?

Communication: Can you explain your thinking?

The Mindset

Technical interviews aren't just about getting the right answer. They're about demonstrating how you think.

Interviewers often care more about your approach than your final answer. A candidate who works through a problem methodically, asks good questions, and communicates clearly — even if they don't finish — often outperforms someone who codes silently and gets stuck.

General Principles

Think out loud: Explain your reasoning as you work. "I'm thinking about approaching this by..." "I notice that..." "Let me try..."

Ask clarifying questions: Don't assume. Confirm you understand the problem before diving in.

Start with an approach: Before coding or calculating, outline your plan. "I'm going to start by X, then Y, then Z."

Work methodically: Don't jump around. Solve piece by piece.

Test your work: Walk through your solution with examples. Catch errors before you're asked.

Handle feedback gracefully: If they give hints, take them. If they point out issues, fix them without getting defensive.

Case Studies and Problem-Solving

What They Test

Case studies evaluate your ability to:

  • Structure ambiguous problems
  • Apply logical frameworks
  • Make reasonable assumptions
  • Analyze quantitatively
  • Recommend and justify decisions

The Approach

Clarify the problem: "Let me make sure I understand. The question is..." "Can I ask a few questions before I start?"

Structure your approach: "I'd like to break this into three parts..." "Let me walk through my framework..."

Make assumptions explicit: "I'm going to assume that..." "Is it reasonable to estimate that..."

Do the math: When numbers are involved, show your work. Round for simplicity. Explain your calculations.

Synthesize and recommend: "Based on this analysis, I'd recommend X because..." Don't just analyze — conclude.

AI Prompt: Case Practice

Give me a case study interview question for a [role type] position.

Then let me work through it. After I give my answer, provide feedback on:
1. Did I structure the problem well?
2. Were my assumptions reasonable?
3. Was my analysis logical?
4. Was my recommendation clear and supported?
5. What would have made my answer stronger?

Take-Home Assignments

What They Test

Take-home assignments test your work in realistic conditions:

  • Quality of your output
  • Attention to detail
  • Ability to work independently
  • Professional presentation

Principles

Follow instructions exactly: If they say 3 pages, don't submit 5. If they say 24 hours, don't ask for 48.

Quality over quantity: Better to do less excellently than more sloppily.

Explain your reasoning: Include notes on your approach, assumptions, and trade-offs.

Proofread everything: Typos and errors in a take-home are worse than in a live interview.

Ask questions if genuinely needed: But don't ask so many that you seem unable to work independently.

Time Management

Assignments often take longer than companies estimate. Plan accordingly. Don't start it the night before it's due.

Presentations and Demonstrations

What They Test

For roles involving presenting, selling, or teaching:

  • Communication skills
  • Presence and confidence
  • Ability to structure information
  • Engagement with audience

Principles

Know your audience: Tailor content and level of detail to who's watching.

Structure clearly: Opening, main points, conclusion. Tell them what you'll tell them, tell them, tell them what you told them.

Practice out loud: Rehearse multiple times. Know your timing.

Handle questions well: Listen fully before answering. It's okay to say "I don't know" for questions outside the scope.

Technical checks: Test slides, screen sharing, and any demos before the interview. Have a backup plan.

Role-Specific Assessments

Software Engineering

  • Practice coding problems regularly
  • Use platforms like LeetCode, HackerRank, or similar
  • Practice on a whiteboard or shared screen (not just your IDE)
  • Know your data structures and algorithms
  • Practice system design for senior roles

Product Management

  • Practice case studies and estimation problems
  • Know common frameworks (RICE, jobs-to-be-done, etc.)
  • Be ready to critique products
  • Practice presenting product specs

Data and Analytics

  • Practice SQL if relevant
  • Be ready to interpret data and graphs
  • Know statistical concepts if role requires them
  • Practice explaining technical findings simply

Design

  • Have a portfolio ready to present
  • Be ready to do live design exercises
  • Explain your design process, not just outcomes
  • Accept critique professionally

Sales

  • Practice mock pitches
  • Know your product/service cold
  • Be ready for role-plays with objections
  • Practice closing techniques

Writing and Content

  • Have samples ready
  • Be prepared for timed writing tests
  • Know the company's voice and style
  • Edit mercilessly

Handling What You Don't Know

It's Okay to Not Know Everything

Interviewers don't expect perfection. They want to see how you handle uncertainty.

When Stuck

Say so: "I'm stuck on this part. Let me think about it differently..."

Show your process: "I'm not sure of the answer, but here's how I'd approach finding out..."

Ask for help: "Could I get a hint on which direction to go?"

Stay calm: Getting flustered hurts you. Struggling gracefully helps you.

Be Honest

If you don't know something fundamental, admit it: "I haven't worked with that specific technology, but I have experience with X which is similar, and I'd be able to learn quickly."

Never fake knowledge you don't have. It's usually obvious and always risky.

Preparation Strategies

Know What to Expect

Ask the recruiter or HR:

  • What types of interviews will there be?
  • What should you prepare?
  • How long is each segment?
  • Who will you meet?

Practice Under Realistic Conditions

  • Code on a whiteboard or shared screen, not your IDE
  • Time yourself on practice cases
  • Do mock presentations to real people
  • Simulate interview pressure

Refresh Fundamentals

If it's been a while since you used certain skills, review. Don't assume you remember.

AI Prompt: Technical Practice

I have a technical interview for a [role] position focusing on [skills].

Give me a practice question at the level a [company type] would ask.

After I answer, evaluate my response and tell me:
1. What I did well
2. Where I could improve
3. What a strong answer would include

What's Next

You've answered their questions. Now it's time to ask yours.

Next chapter: Asking great questions — the questions you ask reveal as much as the answers you give.

Behavioral InterviewsAsking Great Questions