Holiday Extras Software Engineer interview questions & guide 2026

The following questions reflect patterns observed in previous interview cycles. While the specific questions may shift based on the team’s current priorities, these categories illustrate the core competencies Holiday Extras seeks to evaluate.

Technical and Coding Proficiency

These questions assess your practical development skills, including your ability to handle CRUD operations and debug real-world applications.

• Create a web application which fetches images from a public API.
• What is your opinion on Test Driven Development (TDD)?

Preparation for Holiday Extras should be comprehensive, balancing technical rigor with a clear understanding of your own professional narrative. Focus on demonstrating how your technical decisions impact user experience and business goals.

Role-Related Knowledge – You must be prepared to discuss your preferred tech stack (typically JavaScript-focused, such as Node.js or React) with depth. Interviewers look for candidates who understand the "why" behind their technical choices, not just the "how."

Problem-Solving Ability – You will be evaluated on your logical approach to ambiguous problems. When faced with a coding task or a hypothetical scenario, think aloud to show your process, as this is often more important to the team than reaching the perfect solution immediately.

Collaboration and Communication – Holiday Extras places a high premium on team fit. You should be ready to discuss how you function within a group, how you handle feedback, and how you communicate technical concepts to non-technical stakeholders.

Values Alignment – Demonstrate an understanding of the travel industry and the specific challenges Holiday Extras solves. Showing genuine curiosity about their product portfolio will set you apart from candidates who have not researched the company’s impact.

The interview process at Holiday Extras is designed to be thorough and collaborative, reflecting the company’s emphasis on team culture and technical excellence. You can expect a multi-stage journey that moves from initial screenings to more immersive technical assessments and face-to-face interactions. The philosophy is to create a friendly, approachable atmosphere, even during challenging technical rounds.

While the process is structured, it is also designed to be a two-way street where you can assess if the team is the right fit for your career growth. Do not be surprised by the inclusion of group activities, as these are used to observe how you interact with others in a team setting.

The visual timeline above outlines the typical progression from application to final assessment. Use this to manage your preparation schedule, ensuring you have enough time for both technical practice and behavioral reflection. Note that the process can vary in duration, so maintaining steady communication with the recruitment team is essential.

Technical Assessment and Coding

This area is non-negotiable. You will be evaluated on your ability to write clean, maintainable code under time constraints.

Be ready to go over:

• JavaScript Fundamentals – Deep understanding of language core concepts.
• Framework Proficiency – Specifically React or Node.js patterns.

As a Software Engineer, your day-to-day work centers on building and maintaining the digital storefronts and backend services that power travel bookings. You will be expected to contribute to the full software development lifecycle, from initial design discussions to deployment and monitoring.

Collaboration is constant. You will frequently pair-program with colleagues, participate in code reviews, and engage in "meet the team" sessions to ensure technical alignment. You are expected to be proactive, taking ownership of tasks and identifying opportunities to improve system performance or developer workflows. Whether you are debugging a legacy system or architecting a new microservice, your work directly influences the booking conversion rates and the overall customer experience for travelers.

A strong candidate for Holiday Extras is someone who combines technical competence with an ability to communicate effectively in a team environment.

• Must-have skills – Strong proficiency in JavaScript (specifically Node.js or React), experience with API integration, and a solid understanding of Test-Driven Development (TDD).
• Nice-to-have skills – Experience with cloud infrastructure, familiarity with performance optimization tools (e.g., Google Lighthouse), and prior exposure to agile development environments.
• Soft skills – High emotional intelligence, the ability to work well in group settings, and a willingness to provide and receive direct, professional feedback.

Q: How difficult are the coding tests? A: They are considered challenging but fair. They typically involve a mix of simple and complex tasks, often with a 2–3 hour window, requiring you to demonstrate not just your coding ability but your approach to problem-solving.

Q: What is the company culture like? A: Holiday Extras prides itself on being friendly and approachable. Even during technical assessments, the team aims to make candidates feel comfortable, though they remain rigorous in their evaluation of your technical skills.

Q: How long does the process take? A: It can vary significantly, ranging from a few weeks to several months in some cases. It is recommended to stay in contact with the recruitment team if you have not heard back after a week or two.

Q: Is there a specific focus for the technical interview? A: Yes, be ready for a strong focus on JavaScript, as well as potential pair programming sessions where you will work on real code alongside a team member.

• Think Aloud – During coding tasks, explain your thought process. Interviewers are often more interested in how you reach a solution than the code itself.
• Research the Product – Spend time using the Holiday Extras website. Having a clear idea of what they do and how their product works will give you an edge in behavioral interviews.
• Be Prepared for Criticism – The team values engineers who can handle feedback gracefully. If a previous project didn't go as planned, be ready to discuss what you learned from it.
• Reflect on Group Dynamics – If you participate in a group task, be mindful of your impact on others. Support your teammates while also ensuring your own ideas are communicated clearly.

The Software Engineer role at Holiday Extras is a unique opportunity to apply your technical skills to a product that impacts millions of travelers. By mastering your core technical stack, practicing your ability to collaborate in group settings, and demonstrating a deep understanding of the company’s mission, you will be well-positioned to succeed throughout the interview process.

Remember that thorough preparation is your greatest asset. We encourage you to explore additional interview insights, practice questions, and preparation resources on Dataford to ensure you are fully ready for every stage of the assessment. Stay confident, be yourself, and good luck with your application.

The data above provides an overview of the compensation expectations for this role. Use this to understand the market value for your experience level and to prepare for discussions regarding salary, benefits, and total rewards during the later stages of the hiring process.