How hard is the ING interview?

Candidates most commonly rate ING interviews as medium, based on 500 reported interviews.

What topics does ING test in interviews?

ING interviews most often cover Case Study Evaluation, Scenario-Based Problem Solving, Communication, SQL, and Java. The exact emphasis depends on the specific role you apply for.

What roles can I prepare for at ING?

Dataford has interview guides for 9 roles at ING, including Business Analyst, Consultant, Data Analyst, and DevOps Engineer, and more.

Where is ING headquartered?

ING is headquartered in Amsterdam, Netherlands.

Interview Guides

INGMobile Engineer

Updated Jul 17, 2026

ING Mobile Engineer interview questions & guide 2026

Every question ING interviewers actually ask, the frameworks that win the room, and the language hiring managers respond to.

3 rounds · ≈ 3-5 weeks

Initial Screening

Technical Interviews

Behavioral Assessment

What is a Mobile Engineer at ING?

As a Mobile Engineer at ING, you are at the forefront of the bank’s digital transformation. You are responsible for building and maintaining the mobile applications that millions of customers rely on for their daily financial needs. Your work directly impacts the user experience, security, and reliability of ING’s digital banking ecosystem, requiring a balance of high-performance coding and a deep understanding of customer-centric design.

This role is both challenging and rewarding due to the massive scale of ING’s operations. You will work within cross-functional teams, collaborating closely with product owners, designers, and backend engineers to translate complex banking requirements into intuitive mobile features. Whether you are working on Kotlin or Swift, you are expected to write clean, testable code while navigating the high security and compliance standards inherent in the financial sector.

Common Interview Questions

The following questions reflect patterns observed in recent candidate experiences. While specific technical deep-dives vary by team, these categories represent the core areas of assessment at ING.

Technical Proficiency

These questions evaluate your command of mobile development fundamentals and your ability to apply them in real-world scenarios.

How do you manage dependency injection in your mobile applications?
Can you explain the difference between various architectural patterns (e.g., MVVM, MVI) and why you would choose one over the other?

What is your approach to testing in mobile development, and how do you ensure high code coverage?
How do you handle network latency and offline caching to ensure a smooth user experience?
Explain the lifecycle of an Activity/Fragment or ViewController and how you prevent memory leaks.

System Design & Architecture

These questions assess your ability to think about the "big picture" of an application, from component communication to scalability.

How would you design a mobile app module that needs to fetch and display real-time financial data?
Describe your strategy for handling secure storage of sensitive user tokens and data.
How do you structure your project to support modularization and scalability?
If you were tasked with building a feature from scratch, how would you approach the requirements gathering and technical planning?

Behavioral & Cultural Alignment

These questions aim to understand how you collaborate within a team and handle professional challenges.

Describe a time you had to resolve a technical disagreement with a colleague.
How do you handle feedback from code reviews, especially when you disagree with the reviewer?
Tell me about a time you had to deliver a feature under a tight deadline.
How do you ensure your code remains maintainable for other team members?
Why do you want to work at ING, and how do your values align with our mission?

ING Mobile Engineer Interview Questions & Guide 2026 | Dataford