Technical interviews test how you think as much as what you know. Preparing in the right order saves time.
1. Read the job and list the topics
Note the languages, tools and areas in the job description. Prioritise those over everything else.
2. Revisit the fundamentals
For software roles that usually means data structures, algorithms, databases, basics of operating systems and networks, and the language you will be asked in. For other fields, revise the core concepts of your subject. Interviewers often go deep on whatever you list on your resume, so know your own projects well.
3. Practise with a clock
Solve problems at a steady pace and then explain your answer aloud. Start easy, then increase difficulty. Practising out loud matters because many people can solve a problem silently but struggle to describe it.
4. Learn to think out loud
Restate the problem, ask clarifying questions, describe a simple approach first, then improve it. State the time and space cost in plain words. Interviewers want to follow your reasoning.
5. Prepare to talk about your projects
Be ready to explain what the project does, why you made certain choices, what went wrong and what you would change.
6. When you do not know
Say so, share what you do know that is related, and explain how you would find out. Guessing confidently is worse than reasoning honestly.
7. Prepare the setting
For online rounds, check the platform, your internet, a charged laptop and a quiet room. Keep water nearby and a pen and paper for working things out.