Type · Conflict Resolution
Tell me about a time you had a significant disagreement with a colleague or manager. How did you handle it, and what was the resolution?
How to Pass the October Software Engineer Interview in 2026
The October DNA (TL;DR)
October's 'Functional Functional Always' principle underpins the evaluation, seeking candidates who demonstrate a deep understanding of financial product mechanics and can articulate how their work contributes to robust, scalable solutions for October Europe Access. They grade for practical application over theoretical knowledge.
The October 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, debugging, 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 October interview outcomes, avoid these common traps:
- Proposing a solution that doesn't scale for a large number of users or loans.
- Implementing a fix that doesn't address the underlying cause or introduces new bugs.
- Focusing on blaming the other party.
- Not demonstrating empathy or a willingness to compromise.
Get the full October playbook, free
Every round, the exact grading rubric interviewers score against, all the questions, and unlimited mock-interview practice. Free account, no credit card.
Test Yourself: Real October Questions
Three real prompts pulled from our database.
Type · debugging
Here is a snippet of code that is supposed to calculate the risk score for a loan application based on several factors. It's producing incorrect results for certain inputs. Debug and fix the code.
Type · motivation
Why are you interested in joining October, a fintech company focused on SME lending, compared to other opportunities in the tech industry?
+ many more questions, signals, and worked examples
Sign up to unlock the full October grading rubric
October Interview Question Bank
A sample from our database, grouped by round. Sign up to see the full set.
9 of 14 questions shown
1
Recruiter Screen
1- 1
Type · motivation
Why are you interested in joining October, a fintech company focused on SME lending, compared to other opportunities in the tech industry?
2
Coding Screen
3- 2
Type · algorithmic
Given a list of loan applications, each with an amount, interest rate, and a submission timestamp, write a function to calculate the total approved loan amount for a given day, considering that applications are approved sequentially and a loan is only approved if its amount is less than or equal to the remaining available capital for that day. Assume a fixed daily capital pool. - 3
Type · algorithmic
Implement a function that takes a list of transactions (each with a user ID, amount, and timestamp) and returns the top K users with the highest net transaction volume within a specified time window. Handle potential ties. - + 1 more questions in this round (sign up to unlock)
3
System Design
3- 4
Type · design
Design a system to automatically detect and flag potentially fraudulent loan applications in real-time. Consider data sources, processing pipeline, fraud detection models, and alerting mechanisms. - 5
Type · design
Design a microservice responsible for calculating credit scores for loan applicants. Consider the data inputs, the scoring algorithm's complexity, potential external dependencies (e.g., credit bureaus), and how to ensure low latency and high availability. - + 1 more questions in this round (sign up to unlock)
4
Onsite Coding
3- 6
Type · algorithmic
Implement a rate limiter for API requests to prevent abuse. The rate limiter should allow a maximum of N requests per user within a M-minute window. Consider different strategies (e.g., token bucket, leaky bucket) and discuss their trade-offs. - 7
Type · coding
Write a function to simulate loan amortization. Given a principal amount, annual interest rate, and loan term (in years), calculate and return the monthly payment and generate an amortization schedule showing the principal and interest paid each month, and the remaining balance. - + 1 more questions in this round (sign up to unlock)
5
Behavioral / Leadership
4- 8
Type · past-experience
Tell me about a time you had to make a significant technical decision with incomplete information or under pressure. How did you approach it, and what was the outcome? - 9
Type · past-experience
Describe a complex bug you encountered in a production system. Walk me through your process of diagnosing and fixing it, and what steps you took to prevent similar issues in the future. - + 2 more questions in this round (sign up to unlock)
Unlock all 14 October 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 October
How October's DNA translates across functions. Pick your role.
Compare October with similar employers
Same DNA, different bar. Browse the closest companies in our database and see how their loops differ.
ComplyAdvantage
Same tierComplyAdvantage assesses how candidates apply financial crime compliance knowledge to real-world scenarios using thei...
See ComplyAdvantage interview questions
Alloy
Same tierThe final technical deep-dive round at Alloy rigorously assesses a candidate's capacity to design secure, scalable sy...
See Alloy interview questions
PhonePe
Same tierThe bar-raiser round at PhonePe heavily scrutinizes a candidate's capacity to build and scale secure financial system...
See PhonePe interview questions
Practice October interviews end-to-end
October Mock Interview
Run a live mock interview with our AI interviewer using October-style prompts. Get scored on structure, signal, and answer length - exactly how the real loop grades you.
Open
STAR Stories for October Behavioral Rounds
Build a Story Bank of your past wins, mapped to the leadership signals October interviewers grade on. Reuse them across every behavioral round.
Open
October Interview Prep Hub
The frameworks behind every October 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 October interviewers nod instead of frown. Step-by-step playbooks with the moves and the pitfalls.
Open
Sample answers
What a strong answer to these October interview questions shows.
Tell me about a time you had a significant disagreement with a colleague or manager. How did you handle it, and what was the resolution?
A strong answer shows: Calm and rational approach to conflict.; Focus on understanding perspectives and finding common ground.; Professionalism and respect for others..
Here is a snippet of code that is supposed to calculate the risk score for a loan application based on several factors. It's producing incorrect results for certain inputs. Debug and fix the code.
A strong answer shows: Methodical approach to debugging.; Accurate identification of the logical error.; Correct and well-reasoned fix..
FAQ
Explore careers on Workfive →