Apple senior engineer interview

The Senior Software Engineer (SDE 3) rounds, in order

1. 1

   Hiring manager · 30 min

   After a short recruiter call, the hiring manager often does a technical deep dive on your past projects and asks 'Why Apple?'; some teams start with this call.

   At Senior Software Engineer (SDE 3): Technical leadership, mentoring, and how you choose what to work on.

2. 2

   Phone / recruiter screen · 45 min

   One or two live coding screens, usually medium or a domain task such as a thread-safe cache; some teams use a take-home instead or as well.

   At Senior Software Engineer (SDE 3): Often a coding problem plus questions about your past systems; some companies (Uber) use it to set your level.

3. 3

   Coding (DSA) × 3 · 50 min

   Coding rounds focus on edge cases, defensive code and often concurrency, in the language the team uses (Swift, C++, Python, Java, Go).

   At Senior Software Engineer (SDE 3): Usually two rounds. Same difficulty, but interviewers expect quick, confident problem solving and production-quality code.

4. 4

   System design (HLD) · 60 min

   System design for mid and senior roles, often from a product angle (photo sync, push notifications); some teams now add an AI system design round.

   At Senior Software Engineer (SDE 3): One or two rounds that set your level. Expected to lead, size the system and go deep on two or three hard parts.

5. 5

   Team-specific round · 60 min

   A team-specific round: finding planted bugs in a large unfamiliar file, tracing a failing service, a project presentation, or SQL for data-heavy roles.

   At Senior Software Engineer (SDE 3): Project deep dives become central: scope, trade-offs and what you would do differently.

6. 6

   Behavioral · 45 min

   Conflict, failure, decisions with limited information and caring about the user; 'Why Apple?' can come up in any round.

   At Senior Software Engineer (SDE 3): Expected scope: projects across quarters, influencing other teams, mentoring.

7. 7

   Team match

   You interview for a specific team, so a calibration step can add weeks, and an offer still depends on headcount.

   At Senior Software Engineer (SDE 3): Down-leveling to SDE 2 is the most common surprise outcome.

What Apple interviewers look for

• Deep, honest command of your own past projects and decisions
• A specific 'Why Apple?' and feel for the product
• Edge-case handling and defensive, production-quality code
• Concurrency and memory awareness
• Depth in the team's language and domain
• Ownership and working through ambiguity across teams

Coding questions to practise for Apple Senior Software Engineer (SDE 3)

Usually two rounds. Same difficulty, but interviewers expect quick, confident problem solving and production-quality code.

How the coding round is scored · The online assessment

System design at Senior Software Engineer (SDE 3)

Junior and mid-level loops lean toward LLD and object-oriented design; system design starts around ICT3/ICT4 and goes deeper at ICT5+. Prompts often tie to Apple services (photo sync, messaging, push notifications) or the team's own infrastructure.

• Google Drive
• WhatsApp
• Notification system
• Movie booking
• Web crawler

All Apple system design questions

Questions people ask