Apex Developer interview track
Developer and senior-developer interviews
The Apex concepts interviewers actually probe, the bug story they ask you to tell, then the bank and hands-on problems.
Work through it in order — your progress is saved on this device.
- Guide Apex Governor Limits — The Complete Guide
The numbers every interviewer probes — and why a LimitException rolls the whole transaction back.
- Guide Apex NullPointerException Explained — Null vs Empty, Collections and SOQL For Loops
The most common screening bug: null handling, collections and when a SOQL for-loop beats a list.
- Guide Apex Async — Queueable vs Batch vs @future vs Scheduled
Async is a guaranteed question — know which tool fits and the limits on each.
- Guide Apex Trigger Frameworks Explained — Patterns, Best Practices and Implementation
The "how do you structure triggers at scale" question.
- Blog Record-Triggered Flows vs Apex Triggers — The Definitive 2026 Guide
The "when would you NOT write Apex" question.
- Blog Apex Security in Summer '26 — WITH USER_MODE vs WITH SECURITY_ENFORCED vs stripInaccessible
Security in Apex is where senior candidates separate from mid-level ones.
- Blog Apex Code Breaks or Returns Fewer Records After Bumping to API v67 — Summer '26
Your answer to "tell me about a hard bug you debugged recently".
- Question bank Salesforce Apex Interview Questions — Complete Bank, Basic to Advanced (Summer '26)
62 questions, Basic → Advanced — check what you actually retained.
- Practice Solve the 37 Apex problems
Write and run Apex against hidden tests — the part a whiteboard can’t fake.