How long does the Duffel 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 Duffel?

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 Duffel?

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.

Other roles at Duffel:Product Manager Software Engineer Sales Customer Success Solutions Architect

Growth · Customer Success Interview Guide

Applies via Ashby

How to Pass the Duffel Customer Success Interview in 2026

The Duffel DNA (TL;DR)

Duffel values candidates who demonstrate strong analytical problem-solving, technical proficiency, and a deep understanding of API-first products. They seek individuals who are proactive, customer-centric (especially for developer users), and thrive in a fast-paced, evolving travel tech landscape.

The Duffel Interview Loop

Your onsite loop will typically consist of 5 rounds.

1
Round 1
Recruiter Screen
Motivation, customer-facing experience, fit with the segment (SMB / Mid-market / Enterprise).
2
Round 2
Customer Story
Walking through how you saved an at-risk account, drove adoption, or expanded a customer.
3
Round 3
Renewal & Expansion
QBR roleplay, identifying expansion signals, navigating churn risk, multi-stakeholder alignment.
4
Round 4
QBR Roleplay
Live mock QBR — presenting health metrics, ROI evidence, and renewal/expansion narrative to a customer panel.
5
Round 5
Behavioral / Leadership
Past evidence of ownership, influence, resolving conflict.

The Danger Zone: Top Reasons Candidates Fail

Based on our database of Duffel interview outcomes, avoid these common traps:

Vague descriptions of experience without specific examples.
Generic answers not tailored to Duffel or the travel industry.
Blaming the other party entirely without taking responsibility for their own role in the conflict.
Describing a situation where they were simply doing their job.

Test Yourself: Real Duffel Questions

Three real prompts pulled from our database.

Type · Conflict Resolution

Tell me about a time you had a significant disagreement with a cross-functional team member (e.g., engineer, designer, marketer) about a product decision. How did you approach it, and what was the outcome?

Type · Influence

Describe a situation where you had to persuade a skeptical colleague or stakeholder to adopt your point of view or approach. How did you do it?

Type · QBR Roleplay Prep

Imagine you are preparing for a Quarterly Business Review (QBR) with a mid-sized travel agency. What key metrics would you focus on to demonstrate the value Duffel has provided them over the last quarter?

+ many more questions, signals, and worked examples

Unlock the rubric →

Duffel Interview Question Bank

A sample from our database, grouped by round. Sign up to see the full set.

9 of 21 questions shown

Recruiter Screen

1
Type · Motivation
Why are you interested in a Customer Success Manager role at Duffel, and what specifically about the travel tech industry excites you?
2
Type · Customer Facing Experience
Describe your experience working with travel businesses, specifically those in the SMB or Mid-market segment. What were the key challenges they faced, and how did you help them overcome these?
+ 1 more questions in this round (sign up to unlock)

Customer Story

3
Type · Customer Success Story
Tell me about a time you successfully saved an at-risk travel client. What were the warning signs, what steps did you take, and what was the outcome?
4
Type · Customer Success Story
Describe a situation where you drove significant adoption of a new feature or product within a travel client's organization. How did you measure success?
+ 1 more questions in this round (sign up to unlock)

Renewal & Expansion

5
Type · QBR Roleplay Prep
Imagine you are preparing for a Quarterly Business Review (QBR) with a mid-sized travel agency. What key metrics would you focus on to demonstrate the value Duffel has provided them over the last quarter?
6
Type · Expansion Signals
What signals would you look for in a travel client's usage patterns or business communications that might indicate an opportunity for expansion or a need for additional Duffel services?
+ 2 more questions in this round (sign up to unlock)

QBR Roleplay

7
Type · QBR Roleplay
You are leading a QBR for a growing online travel agency. Present the key health metrics, ROI evidence, and a narrative for potential expansion opportunities using Duffel's platform.

Behavioral / Leadership

8
Type · Conflict Resolution
Tell me about a time you had a significant disagreement with a cross-functional team member (e.g., engineer, designer, marketer) about a product decision. How did you approach it, and what was the outcome?
9
Type · Ownership
Tell me about a time you took ownership of a problem that wasn't strictly within your job description. What was the situation, and what did you do?
+ 8 more questions in this round (sign up to unlock)