Technical Interview Preparation Resources

When I prepare for technical interviews, I prefer a small stack of resources that each serve a different purpose. The goal is not to consume everything on the internet. It is to build pattern recognition, then practise applying those patterns under time pressure.

Coding practice

For algorithmic interviews, LeetCode is still the easiest place to get repetition. The problem is that repetition alone can become random. That is why I like NeetCode or similar pattern-based groupings on top of it. They help organise problems into reusable structures such as sliding window, binary search on answer, graph traversal, interval merging, and dynamic programming. When I want fuller explanations rather than just more problems, Cracking the Coding Interview remains useful because it teaches the thinking process, not only the final solution.

The important discipline is to review solved problems properly. After each one, write down the signal that should have told you which pattern to use. That turns practice into recall training instead of passive familiarity.

System design and object-oriented design

For system design interviews, I like to combine interview-specific material with one deeper systems book. System Design Interview volumes 1 and 2 and Grokking the System Design Interview are useful because they model the pace and vocabulary of actual interviews: clarifying requirements, estimating scale, choosing storage, and discussing tradeoffs. To avoid turning that into memorised diagrams, pair it with Designing Data-Intensive Applications. DDIA explains replication, partitioning, consistency, streaming, and indexing at the level where tradeoffs start to make sense.

For object-oriented design, Head First Design Patterns is still one of the better ways to understand responsibilities and composition. Supplement that with problem-based material from Educative or InterviewReady so you practise turning requirements into collaborating objects rather than reciting pattern names.

Behavioural and mock interviews

Behavioural preparation is usually under-practised. Use the STAR method to structure stories, but do not let the answer sound templated. Collect a set of concrete experiences about conflict, failure, ownership, mentoring, and tradeoffs. Then rehearse them aloud. The weak point in behavioural interviews is often not the story itself. It is the lack of a crisp, reflective delivery.

Mock platforms such as Interviewing.io, Pramp, or Meetapro are valuable because they expose timing pressure and communication gaps you will not notice alone. Even one or two mock rounds can show whether you explain before coding, ask clarifying questions, or freeze when interrupted.

A practical prep loop

A good weekly loop is simple: coding practice several times a week, one system design session, one behavioural review, and regular mock interviews as the date approaches. Job boards matter far less than this loop. The best resource stack is the one that gives you repeated feedback from different angles without wasting your energy on overlap.