EY (Ernst & Young) Interview Preparation
Medium-HardProfessional Services & Technology Consulting · Bengaluru
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About EY (Ernst & Young)
EY (Ernst & Young) is one of the world's largest professional-services organisations and a member of the so-called Big Four, providing assurance, tax, strategy and transactions, and consulting services to clients across virtually every industry. Operating as a global network of member firms under the EY brand, the organisation employs several hundred thousand people across more than 150 countries and is structured around regional and service-line teams that serve multinational corporations, governments, fast-growing companies and entrepreneurs. The EY purpose, 'Building a better working world,' frames its work helping clients grow, transform and operate in an increasingly digital and regulated environment. Technology sits at the core of modern EY. Its consulting and engineering practices build and deploy software, data platforms, automation, cloud and artificial-intelligence solutions, and EY collaborates with leading technology providers to modernise client systems and operations. In India, EY has a substantial presence with offices and Global Delivery Services centres in major cities including Bengaluru, which is a key technology and delivery hub. Through these centres, EY professionals deliver software development, data analytics, cybersecurity, risk and managed-services work for clients worldwide. EY invests heavily in early-career talent through internships, graduate programmes and leadership-development initiatives, giving students structured coaching, mentoring and exposure to live client projects. For aspiring software developers, EY offers the rare combination of deep engineering work and broad business context, with opportunities to grow across technology, consulting and industry domains in a globally connected firm.
Interview Rounds4
2–3 DSA coding problems on HackerRank, CodeSignal, or company platform
Data structures & algorithms — arrays, trees, graphs, dynamic programming
System design or low-level design — scalability, APIs, databases
Career goals, teamwork, strengths/weaknesses, role expectations
Practice Questions10
Key Topics
- Data Structures & Algorithms150q
- System Design50q
- Object-Oriented Design40q
- SQL & Databases25q
- CS Fundamentals (OS, Networking)25q
Expert Tips
- Practice LeetCode easy and medium problems before the OA — focus on arrays, strings, trees, and graphs.
- For system design, use the RESHADED framework: Requirements, Estimation, Storage, High-level design, APIs, Detailed design, Evaluation.
- Prepare 3–4 STAR stories covering: a challenge you solved, a time you worked in a team, a project you owned end-to-end.
- After every coding solution, proactively state the time and space complexity — interviewers expect it.
- Study common CS fundamentals: process vs thread, TCP vs UDP, REST vs GraphQL, SQL indexing, CAP theorem.