Type · Algorithmic
Design and implement a rate limiter for API requests. The limiter should restrict the number of requests a user can make within a given time period (e.g., 100 requests per minute).
How to Pass the bunch Software Engineer Interview in 2026
Growth · Software Engineer Interview Guide
Sign up to see ATSHeadquartered in GermanyInterview language: English
The bunch DNA (TL;DR)
The 'Building the Backbone of Private Markets' ethos at bunch drives the evaluation for candidates who demonstrate a deep understanding of financial infrastructure. Interviewers seek evidence of strategic thinking for Native Private Markets Infrastructure and the capacity to innovate beyond Replace Legacy Fund Operations, often probing for specific examples of improving complex systems.
The bunch Interview Loop
Your onsite loop will typically consist of 5 rounds.
- 1
Round 1
Recruiter ScreenMotivation, role fit, logistics. - 2
Round 2
Coding ScreenLeetCode-medium algorithmic problems under time pressure. - 3
Round 3
System DesignDistributed systems, trade-offs at scale, architecture under constraints. - 4
Round 4
Onsite CodingLeetCode-hard problems, reasoning about defects, code clarity, edge cases. - 5
Round 5
Behavioral / LeadershipPast evidence of ownership, influence, resolving conflict.
The Danger Zone: Top Reasons Candidates Fail
Based on our database of bunch interview outcomes, avoid these common traps:
- Not handling concurrency correctly if multiple requests arrive simultaneously.
- Not handling edge cases like empty transaction lists or invalid time windows.
- Failing to account for false positives and the user experience impact.
- Assuming a single database can handle the load and consistency requirements.
Test Yourself: Real bunch Questions
Three real prompts pulled from our database.
Type · System Design
Design a notification service for Bunch that alerts users about important events like successful payments, low balances, or upcoming bill due dates. How would you ensure high deliverability and handle potential spikes in traffic?
Type · Coding
Given a list of user IDs and their associated transaction amounts, implement a function to find the top K users who have spent the most in the last month. Handle potential ties.
+ many more questions, signals, and worked examples
Sign up to unlock the full bunch grading rubric
bunch Interview Question Bank
A sample from our database, grouped by round. Sign up to see the full set.
9 of 12 questions shown
1
Recruiter Screen
1- 1
Type · Motivation
Why are you interested in joining Bunch, a fintech company focused on simplifying group payments and expense splitting?
2
Coding Screen
3- 2
Type · Algorithmic
Given a list of transactions, each with a timestamp, amount, and user ID, write a function to calculate the total amount spent by each user within a given time window (e.g., the last 24 hours). - 3
Type · Algorithmic
Implement a function to detect duplicate transactions based on a combination of user ID, timestamp (within a small tolerance, e.g., 5 seconds), and amount. Assume transactions are coming in a stream. - + 1 more questions in this round (sign up to unlock)
3
System Design
3- 4
Type · System Design
Design a system to track and display real-time balances for millions of users across various accounts (e.g., checking, savings, credit cards) in a fintech app like Bunch. Consider accuracy, latency, and fault tolerance. - 5
Type · System Design
Design a notification service for Bunch that alerts users about important events like successful payments, low balances, or upcoming bill due dates. How would you ensure high deliverability and handle potential spikes in traffic? - + 1 more questions in this round (sign up to unlock)
4
Onsite Coding
2- 6
Type · Coding
Write a function to calculate the optimal way to split a bill among a group of friends, considering who paid for what initially and any service charges or tips. The function should return the minimum number of transactions needed to settle all debts. - 7
Type · Coding
Given a list of user IDs and their associated transaction amounts, implement a function to find the top K users who have spent the most in the last month. Handle potential ties.
5
Behavioral / Leadership
3- 8
Type · Behavioral
Tell me about a time you had to make a significant technical decision with incomplete information. How did you approach it, what was the outcome, and what did you learn? - 9
Type · Behavioral
Describe a challenging bug you encountered in a production system. What steps did you take to diagnose and resolve it under pressure? - + 1 more questions in this round (sign up to unlock)
Unlock all 12 bunch questions, free
No credit card. Every question with its framework, the grading signals interviewers score against, and a worked answer for each.
Interview tracks at bunch
How bunch's DNA translates across functions. Pick your role.
Compare bunch with similar employers
Same DNA, different bar. Browse the closest companies in our database and see how their loops differ.
Nium
Same tierNium's 'New Value' principle guides assessments, seeking individuals who can innovate within global payment infrastru...
See Nium interview questions
Cuvva
Same tierCuvva's emphasis on delivering flexible insurance via the 'Download Cuvva' app prioritizes candidates who can simplif...
See Cuvva interview questions
WEBB Traders
Same tierTrading Development roles prioritize mental math speed, probability estimation, and risk-taking under pressure. Inter...
See WEBB Traders interview questions
Practice bunch interviews end-to-end
bunch Mock Interview
Run a live mock interview with our AI interviewer using bunch-style prompts. Get scored on structure, signal, and answer length - exactly how the real loop grades you.
Open
STAR Stories for bunch Behavioral Rounds
Build a Story Bank of your past wins, mapped to the leadership signals bunch interviewers grade on. Reuse them across every behavioral round.
Open
bunch Interview Prep Hub
The frameworks behind every bunch round: CIRCLES for product sense, hypothesis-driven debugging for analytical, STAR for behavioral. Learn each one in 10 minutes.
Open
Interview Frameworks
CIRCLES, STAR, AARRR, RICE, MECE. The exact frameworks that make bunch interviewers nod instead of frown. Step-by-step playbooks with the moves and the pitfalls.
Open
Sample answers
What a strong answer to these bunch interview questions shows.
Design and implement a rate limiter for API requests. The limiter should restrict the number of requests a user can make within a given time period (e.g., 100 requests per minute).
A strong answer shows: Understanding of rate limiting algorithms (e.g., token bucket, leaky bucket).; Concurrency control.; Efficient state management..
Design a notification service for Bunch that alerts users about important events like successful payments, low balances, or upcoming bill due dates. How would you ensure high deliverability and handle potential spikes in traffic?
A strong answer shows: Decoupled architecture (e.g., message queues).; Strategies for handling high throughput and ensuring reliability.; Consideration of different notification channels (push, SMS, email).; User preference management..
Frequently asked questions
How long does the bunch interview process take?
Most candidates spend between 4 and 8 weeks from recruiter screen to offer. The onsite loop itself runs in a single day or is split across two half-days, with debrief and offer typically within 5 business days after.
How should I prepare specifically for bunch?
Focus on three things: (1) the company DNA shown above - what they actually grade for, (2) the rounds in your loop, especially the round most candidates underestimate, and (3) drilling on the question types in this guide using a structured framework like CIRCLES or STAR.
Does this apply to engineering or design roles at bunch?
The DNA stays the same - what changes is the round mix. SWE candidates face coding screens instead of Product Sense; designers face portfolio reviews and design exercises. The "what they value" and behavioral signals carry across all functions.
Explore careers on Workfive →