Block Software Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 341 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Block.
Block
Software Engineer Intern
Intern Average Positive experience Accept offer 4 rounds
Interview process
Technical screen Technical screen Technical screen Technical screen
Interview formats
Coding Coding
Online assessment with three LeetCode medium problems to be solved in 1 hour and 10 minutes. Then, there were three 1 hour technical interviews, all in a pair-programming format (for each interview, questions were incremental, like 1a, 1b, etc). Overall, one of the best interview I've ever done, interviewers and recruiters were supeer nice and helpful.
Confirmed questions1 question
- A chess-related question using 2D dynamic programming.
Block
Software Engineer
Senior Difficult Neutral experience No offer 2 rounds
Interview process
Recruiter call Technical screen
Interview formats
Behavioral Coding Technical
First, I chatted with the recruiter about my background and what I'm looking for. After that, I had a technical front-end interview with two engineers. They asked me to build an application. I think I did okay, I managed to get a working app done, but unfortunately, I didn't get past it. No specific feedback was provided.
Confirmed questions8 questions
- Could you implement a memory game using either a JS framework or vanilla JS, following a provided demo app?
- From scratch, please code the HTML, CSS, and JavaScript for this memory game.
- The game should present N x N cards in a grid, where N is adjustable by the user using a slider.
Block
Software Developer
Mid Average Negative experience No offer 7 rounds
Interview process
Recruiter call Technical screen Technical screen Technical screen Phone screen Technical screen Technical screen
Interview formats
Coding Technical Technical System Design Behavioral
The interview process started with a 30-minute recruiter call. This was followed by a 1-hour coding interview. After that, there was a 4 hour 30 min loop which included a 1-hour technical interview, another 1-hour technical interview, a 30-minute manager round, a 1-hour system design interview, and a 1-hour behavioral interview. In total, there were 7 rounds. At the end, I received an automated rejection email without any feedback.
Confirmed questions2 questions
- Could you solve a Leetcode style question?
- Can you design a hotel booking platform?
Block Software Engineer Interview Questions
Quoted word for word from Block interview reports.
“Given a string like "Words ((firstkey)) more words ((secondkey))" and a hash table mapping firstkey to "firstvalue" and secondkey to "secondvalue", determine if the string includes the keys present in the hash table, returning True or False accordingly.”
Read reports →“Given a graph with weighted edges, what is the maximum path from a specified start to end point?”
Read reports →“Find the common elements in a list of Class Items and sort them to retrieve the top k elements using a Comparator.”
Read reports →“Given currency conversion rates like INR to USD at 0.014 and AUD to USD at 0.72, calculate the conversion rate for USD to INR and AUD to INR.”
Read reports →“Implement the Sieve of Eratosthenes algorithm to find all prime numbers less than N, given the steps: start with the first prime, 2. For each identified prime, mark its multiples as composite. Increment the index and check if the number is marked. If not, it's prime; if marked, skip it.”
Read report →“Given a 2D grid where a robot moves based on directional arrows (<, >, ^, v) until it encounters another arrow, and the destination is marked with '@', can you find and print the index of the destination by tracing the robot's path?”
Read report →“Can you find the differences between two 2D arrays using an algorithm with optimal time complexity?”
Read report →“Can you find the shortest unique prefixes for a given set of words, like finding "pinea" for "pineapple", "pinet" for "pinetree", and "pil" for "pill"?”
Read report →“Could you convert a 2D array of integers into a string graph using spaces and dashes?”
Read report →Formats, difficulty and experience
Across all 341 Block interview reports.