Technology Track

Software Engineering Interview Prep

Software engineering interviews at top tech companies are a specific skill you can train for. We coach you on system design, algorithms, and the communication patterns that turn good answers into offers.

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1,000+ candidates coached into top-tier firms

What We Cover

Data structures and algorithms (arrays, trees, graphs, dynamic programming)

System design for L4-L6+ candidates

Coding interview patterns and problem-solving frameworks

Behavioural interviews and leadership principles

Company-specific preparation (Google, Meta, Amazon, Apple, Netflix)

Object-oriented design and API design

Common Software Engineering Interview Questions

Design a URL shortening service like bit.ly.

How would you design the news feed for a social media platform?

Given an array of integers, find two numbers that add up to a target sum.

Design a rate limiter for an API.

Explain the trade-offs between SQL and NoSQL databases.

How would you design a distributed cache system?

Implement an LRU cache.

Walk me through how you would scale a system from 1,000 to 10 million users.

What happens when you type a URL into your browser?

Design a real-time chat application.

These are real questions asked in software engineering interviews. Our coaching covers how to structure and deliver winning answers.

What Top Firms Look For

Problem-solving ability, can you break down complex problems and find efficient solutions?

Code quality, clean, readable, well-structured code matters more than speed

System design thinking, especially for L5+ roles, can you design at scale?

Communication, explaining your thought process clearly is as important as the solution

Collaboration signals, how do you work with others to solve problems?

Growth mindset, top companies want engineers who learn quickly and adapt

A Day in the Life: Software Engineering

A software engineer at a top tech company spends their day writing code, reviewing pull requests, and participating in design discussions. Mornings typically start with standup and code reviews. The core of the day involves building features, debugging issues, and writing tests. Afternoons may include design reviews for larger projects, 1:1s with your manager, and cross-team collaboration. On-call rotations add incident response to the mix. Hours are typically 40-50 per week at most companies, with flexibility on when and where you work.

How to Break Into Software Engineering

The standard path is a CS degree → internship → full-time offer, but many alternative routes exist

Bootcamp graduates can break in through smaller companies first, then level up to FAANG

LeetCode-style preparation is necessary but not sufficient, system design matters at L5+

Open-source contributions and side projects demonstrate genuine engineering interest

Referrals significantly increase your chances, networking in tech communities (meetups, Discord, Twitter) pays off

What it pays

On the software engineering ladder, a entry sits at a midpoint around £75k in cash and a principal near £305k. Equity is missing from these bands and is most of senior technology compensation. A grant vests over four years and moves with the share price, so two people on identical offers a year apart can end up far apart. Compare offers on annualised equity, never on the headline grant. Note also that Amazon runs a level behind: their SDE I is L4 where Google and Meta start at 3.

Software engineering pay, level by level

Guides for this track

The written material behind the coaching, free to read.

Software Engineering Interviews at Trading Firms and Banks10 min read

Frequently Asked Questions

How long does it take to prepare for a software engineering interview?

For candidates with a CS background, 4-8 weeks of focused practice is typical. This includes 2-3 weeks on data structures and algorithms (targeting 100-150 LeetCode problems), 1-2 weeks on system design (for L5+ roles), and 1-2 weeks on behavioural prep. Career changers from bootcamps should plan for 8-12 weeks.

Is LeetCode enough to pass a coding interview?

LeetCode builds pattern recognition, but it is not sufficient on its own. Top candidates also master communication (explaining your thought process out loud), time management (knowing when to move on), and edge case handling. System design is equally weighted at senior levels. Behavioural interviews can make or break borderline candidates.

When should I start preparing for system design interviews?

System design becomes important at L5/senior level and above. If you are targeting senior roles, dedicate 2-3 weeks specifically to system design. Cover fundamentals (load balancing, caching, databases, message queues), then practise designing 8-10 common systems (URL shortener, news feed, chat app, etc.). Focus on trade-off discussions, not memorising architectures.

What does L3VLUP SWE interview coaching include?

Our coaching covers coding interview strategy (patterns, not memorisation), system design walkthroughs, behavioural interview preparation (STAR method with tech examples), and company-specific preparation for Google, Meta, Amazon, Apple, and other top firms. Each session includes live problem-solving with real-time feedback on both correctness and communication.

This week in your seat

Open NewsViz

“Tell me about something happening in this market” is coming in some form. Pick one story, read the source, and have a view on it.

Your Coach: Surojit Chakraverti

Citigroup · Rothschild & Co · Hedge Fund CIO

Surojit is a hedge fund CIO (Third Wave Capital, previously Redline) and former investment banker who worked at Citigroup and Rothschild — with his core deal experience in M&A at Citi and Rothschild. He has personally coached over 1,000 candidates into roles at Goldman Sachs, Blackstone, KKR, Google, McKinsey, and dozens of other top-tier firms.

Every software engineering coaching session is tailored to your specific targets, timeline, and experience level. No generic advice, just the insider knowledge that separates offers from rejections.

Ready to Ace Your Software Engineering Interview?

Get 1:1 coaching from professionals who have been through the process and sat on the other side of the table. No generic advice, just what actually works.

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Coached by Surojit Chakraverti — Citi, Rothschild, Third Wave Capital

Interview Prep →

Tell me when Software Engineering roles open

Most of these assess on a rolling basis, so the fortnight after a window opens is worth more than the deadline printed at the end of it. We watch the boards daily and email you the day one goes live.

One email when a window opens, plus a short weekly round-up in season. Free, and you can leave at any point.