Technical Interviews in Tech: How to Prepare & Explain Your Thinking
To pass a technical interview in 2026, you need to demonstrate not just technical knowledge, but the ability to solve problems out loud. Hiring managers look for communication, understanding of system constraints (System Design), and the ability to ask clarifying questions before jumping into code.
If you passed the HR interview (human resources screening), congratulations! Now you're entering the big leagues — the technical interview. The interviewer's goal is to understand one simple thing: how does your brain work when you encounter a problem you don't know?
Rule 1: Never Jump Straight to Code (Ask Clarifying Questions)
The most common mistake candidates make in technical interviews is hearing the question and immediately starting to type frantically. Interviewers intentionally give vague questions to see if you know how to gather requirements.
- "How many users is this system supposed to serve? (Scale)"
- "Is runtime speed (Time Complexity) more important than memory savings (Space Complexity)?"
- "How do we handle edge cases, like empty or invalid input?"
Rule 2: Think Out Loud
In a technical interview, silence is your biggest enemy. If you stare at the screen silently for 10 minutes and then write a solution, the interviewer doesn't know how you got there. Verbalize your thought process.
Rule 3: Start With a Naive Solution (Brute Force) and Improve
Stuck trying to find the most brilliant algorithm? Let it go. It's better to present a working solution (even if it's slow and clunky) than to write nothing. This approach signals practicality and results-orientation.
Rule 4: Getting Stuck Is Natural — Ask for Guidance Wisely
Engineering managers know interview settings are stressful. If you're stuck, don't panic. Make the interviewer your partner. Say: "I understand I need to filter the data here, but I'm getting a bit tangled. Could you point me in the right direction?" This shows you have no ego and excellent teamwork ability.
How to Actually Show Up Prepared
Technical knowledge can be read in books, but technical communication skills must be practiced. Our Interview Prep system at Custro lets you run full interview simulations against an AI-powered engineering manager.
Don't leave your technical interview to chance. Join now and start training at Custro.