The hottest Interview Prep Substack posts right now

Use a simple, reusable framework (scoping, functional and non‑functional requirements, data model, API design, high‑level design, drill‑downs) to structure every system design answer.
Prioritize data flow and architecture over UI framework debates; fully understand and scope the problem before drawing or choosing implementation details.
Practice with real worked examples and focused prep notes so you can confidently handle common iOS system design prompts and make your study time efficient.

Focus on your skills rather than specific job titles. Job titles change all the time, so search by what you can do instead.
Prepare well for interviews ahead of time. Make a study plan and find out the topics to focus on, so you don’t get stressed last minute.
Build real connections with people in your field. Attend events, follow up with new contacts, and engage on platforms like LinkedIn to create opportunities.

Given a non-negative integer as a string, you can remove k digits to form the smallest number.
Removing specific digits strategically can create the desired smallest number, as illustrated in the examples.
It's important to consider string manipulation, integer typecasting, and a greedy approach when solving this type of problem.

Interviews are short—use your 30–45 minutes ruthlessly and keep your introduction to 30–60 seconds so you have time for focused answers.
Center every answer on your role, decisions, and measurable impact; keep background brief and use 'I' so the interviewer can assess what you personally did.
Practice concise, well-paced answers to avoid rambling, and choose high-impact examples (including incidents, outages, or complex bugs) not just large formal programs.

Preparation is key for Technical Program Management (TPM) interviews. You should practice personalizing your answers based on your experiences rather than just memorizing them.
Understanding the types of questions you'll face can help a lot. Interviews often include hypothetical scenarios and technical questions, so being ready for these can make you feel more confident.
Having a strong elevator pitch is important. This is your chance to introduce yourself and explain what you bring to the table in a quick and engaging way.

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Mock interviews are valuable for interview preparation and can help in improving performance.
Watching experts and observing their approach to defining problems can be beneficial for learning.
When designing systems, it's crucial to consider monetization strategies and not overlook the economic aspects.

This post discusses a coding problem posed by Google. It involves squaring the elements of a sorted list of integers and returning them in sorted order.
The problem requires taking a sorted list of integers, squaring each element, and outputting the results in a sorted array.
Sample input given is [-9, -2, 0, 2, 3], which should result in the output [0, 4, 4, 9, 81].