Practice Software Engineering interview questions covering SDLC, Agile, design patterns, clean code principles, testing strategies, and DevOps practices.
Software engineering interviews at larger companies include a system design component, but they also test engineering process knowledge that many candidates under-prepare: SDLC models, agile delivery, technical communication, and design principles. These questions screen for engineers who can build reliable software at scale, not just write correct code.
Know the SDLC models — Waterfall, V-Model, iterative, incremental, and Agile — and be able to articulate when each is appropriate. For Agile, understand Scrum ceremonies (sprint planning, daily standup, sprint review, retrospective), Kanban flow metrics, and the difference between velocity and throughput. DevOps practices — CI/CD pipelines, infrastructure as code, blue-green deployment, canary releases, and SLOs vs SLAs — are tested frequently at modern engineering organisations. Design patterns and clean code principles (SOLID, DRY vs YAGNI, composition over inheritance) separate candidates at senior levels.
Testing strategies are increasingly standard: unit testing, integration testing, contract testing, test doubles (mock vs stub vs spy vs fake), TDD discipline, and test coverage as a signal rather than a goal. Refactoring skills — recognising code smells (long method, God class, feature envy) and applying extract-method transformations — are valued as much as greenfield design skills. Use the Top 50 Software Engineering Interview Questions to practise connecting these principles to real-world trade-offs.
