Endava Full Stack Engineer interview questions & guide 2026

The following questions are representative of the patterns observed in Endava interviews. While the specific focus of your interview may shift based on the project requirements and the technologies being used, you should prepare for a blend of theoretical knowledge and practical application.

Technical Foundations: Java & Backend

These questions assess your core understanding of object-oriented programming and server-side architecture.

• What is an abstract class in Java?
• Explain the difference between the "super" and "this" keywords in Java.

Preparation at Endava requires a balanced approach. You must be technically sharp, but also capable of explaining your "why" behind every technical decision.

Role-related Knowledge – You will be expected to demonstrate deep proficiency in both your primary backend language (typically Java) and frontend ecosystem (JavaScript/React). Interviewers evaluate this by asking for specific use cases and challenging you to solve problems in real-time.

Problem-solving Ability – Beyond knowing syntax, you must demonstrate how you break down complex, ambiguous requirements. Use the STAR method (Situation, Task, Action, Result) to describe how you have handled difficult technical hurdles in past projects.

Culture Fit & Communication – Endava values collaboration and proactive communication. Be ready to discuss your past projects, how you work within a team, and how you handle feedback or technical disagreements.

The Endava interview process is designed to evaluate both your technical depth and your ability to function within a professional services environment. You should expect a rigorous, multi-stage process that focuses on your practical ability to contribute to a project from day one.

The process typically begins with an initial screening, followed by a technical assessment or test, and culminates in a series of interviews that cover both technical proficiency and management-level alignment. The company emphasizes a clear assessment of your current skill level against their internal grading scales.

This timeline illustrates the progression from initial screening to final technical and management discussions. Candidates should use this as a roadmap to pace their preparation, ensuring they are comfortable with both high-level system design and granular coding tasks before reaching the later stages.

Technical Depth: Frontend & Backend

Interviews for this role are often split into distinct frontend and backend sessions. You must be prepared to switch contexts seamlessly.

Be ready to go over:

• Core Java – Understanding of memory management, collections, and OOP principles.
• JavaScript Ecosystem – Competency in vanilla JS, closures, and modern library usage (e.g., React).

As a Full Stack Engineer, you will be responsible for the full lifecycle of feature development. This includes gathering requirements from stakeholders, designing the technical architecture, and writing clean, testable code.

You will often find yourself acting as the bridge between database design and user-facing features. Responsibilities include:

• Designing and maintaining SQL databases and backend services.
• Building responsive, performant user interfaces.
• Participating in code reviews and providing constructive feedback to peers.
• Communicating progress and technical blockers to project managers.

You will be expected to demonstrate ownership over your tasks, ensuring that your code is not only functional but also scalable and maintainable for the rest of the team.

A competitive candidate at Endava combines strong technical fundamentals with a willingness to learn and adapt to different client stacks.

• Must-have skills:

• Proficiency in Java and related enterprise frameworks.

• Deep understanding of JavaScript, HTML, and CSS.

• Experience with SQL database design and management.

• Strong logic and algorithmic problem-solving skills.

• Nice-to-have skills:

• Experience with modern frontend frameworks like React.

• Familiarity with agile methodologies and collaborative development tools.

• Previous experience in a client-facing or consultancy role.

Q: How difficult are the technical interviews? A: The difficulty is generally considered moderate to high, as the interviews focus on both theoretical knowledge and your ability to write code in an IDE. Being able to articulate your thought process while coding is just as important as the code itself.

Q: What is the timeline from application to offer? A: The process typically spans a few weeks, starting with an HR screen, moving to an online test, and finishing with 1–2 technical rounds and a final management interview.

Q: How can I stand out? A: Successful candidates are those who demonstrate a clear understanding of the "why" behind their technical choices and show a strong alignment with Endava values, such as proactive communication and a focus on client success.

• Own your self-assessment: In technical interviews, you may be asked to self-assess your skills. Be honest but confident; use this as a platform to highlight your strongest areas.
• Prepare for live coding: Practice writing code in a standard IDE without relying on heavy IDE support to ensure you are comfortable explaining your logic in real-time.
• Focus on the "why": When discussing past projects, explain the trade-offs you made. Whether it was a choice of database or a frontend library, interviewers want to see that you think critically.
• Research the culture: Endava prides itself on a collaborative and professional culture. Be prepared to discuss how you contribute to team success beyond just your individual coding tasks.

The Full Stack Engineer role at Endava is an excellent opportunity to work on diverse, high-impact projects that will test and refine your technical skills. By focusing on your core Java and JavaScript knowledge, mastering your ability to explain your logic during live coding, and demonstrating a collaborative mindset, you will be well-positioned to succeed.

Candidates can explore additional interview insights, practice questions, and preparation resources on Dataford. Remember that your performance is not just about the final answer, but about how you approach the problem and communicate with your team.

This module provides insight into compensation structure, which at Endava is often tied to internal levels and specific technical expertise. Candidates should interpret these figures as a starting point for negotiation and should focus on demonstrating how their specific experience maps to the company's internal grade requirements to secure the best possible offer.