The 30-Day SWE Interview Prep Schedule (2026)

Blog / The 30-Day SWE Interview Prep Schedule (2026)

What's the best way to prepare for an interview process when you're 30 days out?Let's assume you have a 40-plus hours work week and also don't want to spend every waking minute in front of a screen.Based on those constraints a typical study plan should aim for 90 minutes on the 5 weeknights and one 4-hour block on a weekend day.That's 11.5 hours per week and over four weeks that's exactly 46 hours.So what is the best way to spend those 46 hours?Without a doubt the most time efficient way of preparing for any interview is to practice the exact set of questions asked by that company.If the company you are applying to appears in this list, well then it's very straightforward.Simply study as many of those questions as possible before your interview.However, if the company you are applying to is not in that list, there is another way!Firstly, checkout job posting websites like Indeed and Glassdoor and see if anyone has posted about the interview process.If you don't find anything there, don't worry, there is still a way forward! That way is to prepare for the industry standard interview process which typically consists of four rounds.

Behavioral
Data Structures & Algorithms
High Level Design / Low Level Design
Culture Fit

1. Behavioral

This is a standard first round interview, held by either an internal recruiter or HR employee. This is done to confirm that they are not progressing candidates who are either lacking the required experience or the motivation to join the company.

2. Data Structures & Algorithms

Ever since Google started asking DSA questions in the mid 2000s they have become a staple of software engineering interviews. Even in the age of AI, companies still like to see that you can reason through an algorithm line by line and explain the time and space complexities.

3. High Level Design / Low Level Design

This round varies by company so it is worth doing some research online to see if any candidates have discussed the interview process. To be safe we have built the 30 day study plan to cover both.

4. Culture Fit

This is the final boss, but can be trickier than people expect. This is usually done by either a founder or CTO to ensure that you will be a good fit on whatever team you will be landing on.So now that we know the outline of the interview process what is the best way to break down the study across the 30 days?

The 30 day breakdown

Week	Days	Focus Area	Problems	Question Bank
1	1-7	Data Structures & Algorithms	2330 mins per question	TechPrep 100
2	8-14	System Design	7 completed90 mins per question	Most commonly asked System Design
3	15-21	Low Level Design	790 mins per question	Most commonly asked LLD
4	22-30	Behavioral	3020 mins per question	Behavioral Playbook

Now let's look at each week and understand why we've divided it up like this.

Week 1

Data structures & algorithms is a must study topic. For each question try to have attempted the question and studied the editorial solution in under 30 minutes. TechPrep 100 is a list of the 100 most commonly asked interview questions ordered by most frequently asked. By studying 20+ questions from this list you cover all the major DSA question types and it is by far the most efficient way of preparing for DSA interviews.

Week 2

System design is tricky and most candidates fall over at this round, but once you've seen the common design patterns it becomes a lot easier. This system design list is also ordered by most frequently asked so studying them in order is optimal if you don't know which specific questions the company likes to ask. Firstly you should watch the solution video and read through the editorial write up. Once you feel you have a good understanding, try out the system design whiteboard which walks you through the design exactly like how an interviewer will. It also provides fine tuned AI feedback on your answers which helps your system design go from average to excellent very quickly!

Week 3

Low level design coding rounds have become increasingly popular as a way for interviewers to quickly gauge your ability to write clean, modular, and extendable code. Often times the hardest part isn't understanding the question or the actual solution logic but rather the time pressure. Getting used to reading the question, figuring out how to solve it, and writing the code in 45-60 minutes is challenging. The best way to get used to this, is simply to practice as many LLD questions as you can. Unfortunately, there are no shortcuts here.But once you've done a few you will start to notice common patterns which makes it much easier. Also be sure to use the timer as you practice to make sure you can get it done within 60 minutes.

Week 4

Preparing for behavioral interviews is often overlooked by many software engineers and therefore, is a great way for you to stand out amongst other candidates. If you can prepare all the questions in the Behavioral Playbook following the guidance outlined in each of the sample solutions you will be in a great place. The benefit of preparing behavioral answers is once you've done it once, you can reuse them for every interview, you only need to change the company specific answers.So there you have it, your 30 day interview prep schedule to land software jobs in 2026.If you want to try it out we have built it out exactly as one of our custom roadmaps.And finally...Best of luck!