Type · system-design
Design a distributed rate limiter for the Notino API. This limiter should prevent abuse and ensure fair usage across different API endpoints and user tiers (e.g., guest vs. logged-in user vs. partner).
How to Pass the Notino Software Engineer Interview in 2026
The Notino DNA (TL;DR)
Scaling Europe's largest Fragrance Online retail catalog requires managing multi-currency pricing, high-volume localized fulfillment, and supplier integrations. Interviewers grade candidates on concrete trade-offs made when managing inventory spikes in Polska and Deutschland.
The Notino 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 Notino interview outcomes, avoid these common traps:
- Not handling cases where a product might not be in the stock list.
- Choosing a recommendation algorithm that doesn't scale well.
- Not handling disconnected components or cycles in the graph.
- Creating a flat structure instead of a hierarchical one.
Test Yourself: Real Notino Questions
Three real prompts pulled from our database.
Type · algorithmic
Given a list of product IDs and their corresponding stock levels, and a list of customer orders (each with a product ID and quantity), write a function to determine which orders can be fulfilled and return a list of unfulfillable order IDs. Assume products have unlimited stock if not specified.
Type · debugging
Root Cause Analysis (Issue Tree + 5 Whys)A user reports that sometimes, when adding items to their cart, the total price displayed is incorrect. Here's a simplified version of the cart service code. Find and fix the bug.
+ many more questions, signals, and worked examples
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Notino Interview Question Bank
A sample from our database, grouped by round. Sign up to see the full set.
9 of 13 questions shown
1
Recruiter Screen
1- 1
Type · motivation
What specifically about Notino's mission and our position in the online beauty retail space excites you as a software engineer?
2
Coding Screen
3- 2
Type · algorithmic
Given a list of product IDs and their corresponding stock levels, and a list of customer orders (each with a product ID and quantity), write a function to determine which orders can be fulfilled and return a list of unfulfillable order IDs. Assume products have unlimited stock if not specified. - 3
Type · algorithmic
You are given a stream of user click events, each with a timestamp and a product ID. Design a function to find the top K most frequently viewed products within a sliding time window (e.g., the last 5 minutes). - + 1 more questions in this round (sign up to unlock)
3
System Design
3- 4
Type · system-design
Design a system to recommend personalized product bundles to users based on their past purchases, browsing history, and current promotions. Consider scalability for millions of users and products. - 5
Type · system-design
Design a distributed rate limiter for the Notino API. This limiter should prevent abuse and ensure fair usage across different API endpoints and user tiers (e.g., guest vs. logged-in user vs. partner). - + 1 more questions in this round (sign up to unlock)
4
Onsite Coding
3- 6
Type · debugging
Root Cause Analysis (Issue Tree + 5 Whys)A user reports that sometimes, when adding items to their cart, the total price displayed is incorrect. Here's a simplified version of the cart service code. Find and fix the bug. - 7
Type · algorithmic
Implement a function to find the shortest path between two product categories in a graph where edges represent 'related products' or 'frequently bought together' relationships. The graph can be very large. - + 1 more questions in this round (sign up to unlock)
5
Behavioral / Leadership
3- 8
Type · past-evidence
Tell me about a time you had to make a significant technical trade-off on a project (e.g., performance vs. maintainability, speed of delivery vs. feature completeness). What was the situation, what trade-off did you make, and what was the outcome? - 9
Type · past-evidence
Describe a situation where you encountered a critical bug in production that impacted many users. How did you approach diagnosing and resolving the issue under pressure? - + 1 more questions in this round (sign up to unlock)
Unlock all 13 Notino 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 Notino
How Notino's DNA translates across functions. Pick your role.
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Practice Notino interviews end-to-end
Notino Mock Interview
Run a live mock interview with our AI interviewer using Notino-style prompts. Get scored on structure, signal, and answer length - exactly how the real loop grades you.
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STAR Stories for Notino Behavioral Rounds
Build a Story Bank of your past wins, mapped to the leadership signals Notino interviewers grade on. Reuse them across every behavioral round.
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Notino Interview Prep Hub
The frameworks behind every Notino round: CIRCLES for product sense, hypothesis-driven debugging for analytical, STAR for behavioral. Learn each one in 10 minutes.
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Interview Frameworks
CIRCLES, STAR, AARRR, RICE, MECE. The exact frameworks that make Notino interviewers nod instead of frown. Step-by-step playbooks with the moves and the pitfalls.
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Sample answers
What a strong answer to these Notino interview questions shows.
Design a distributed rate limiter for the Notino API. This limiter should prevent abuse and ensure fair usage across different API endpoints and user tiers (e.g., guest vs. logged-in user vs. partner).
A strong answer shows: Chooses a distributed algorithm (e.g., Redis-based, ZooKeeper-based).; Addresses potential race conditions and consistency issues.; Considers different throttling strategies and user tiers..
Given a list of product IDs and their corresponding stock levels, and a list of customer orders (each with a product ID and quantity), write a function to determine which orders can be fulfilled and return a list of unfulfillable order IDs. Assume products have unlimited stock if not specified.
A strong answer shows: Efficient data structure usage (hash map for stock lookup).; Correct handling of missing products and zero/negative quantities.; Clear and concise code..
Frequently asked questions
How long does the Notino 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 Notino?
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 Notino?
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.
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