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πŸš€ Top 50 Salesforce Developer Interview Questions (2025 Updated)

If you are preparing for a Salesforce Developer interview in 2025, you need to go beyond just definitions.
Recruiters today want to know how you apply Salesforce concepts in real-world scenarios β€” from Apex triggers, LWC, SOQL, Flows, to Integration.

To help you crack your next interview, I’ve compiled the Top 50 frequently asked Salesforce Developer questions with short, impactful answers.

πŸ”Ή Section 1: Salesforce Basics & Admin (Q1–Q10)

Q1. What is the difference between Workflow, Process Builder, and Flow?
πŸ‘‰ Workflow – Limited automation (field updates, email). Deprecated.
πŸ‘‰ Process Builder – More powerful, but also deprecated.
πŸ‘‰ Flow – Future of automation, supports before/after save, callouts, subflows.

Q2. What is Governor Limits in Salesforce?
πŸ‘‰ Salesforce enforces limits like SOQL queries (100 per transaction), DML statements (150 per transaction), heap size, CPU time, etc., to ensure multi-tenancy.

Q3. How do you prevent recursion in a Trigger?
πŸ‘‰ Use a static Boolean flag in a helper class. Example:

public class TriggerHandler {
   public static Boolean isFirstRun = true;
}

Q4. Difference between Role and Profile?
πŸ‘‰ Profile β†’ Object/field level permissions.
πŸ‘‰ Role β†’ Data visibility through hierarchy.

Q5. What are setup vs non-setup objects?
πŸ‘‰ Setup: User, Profile.
πŸ‘‰ Non-setup: Account, Contact.
πŸ‘‰ Mixing them in the same transaction causes Mix DML error.

Q6. What are the different types of Flows?
πŸ‘‰ Screen Flow, Record-Triggered Flow (Before/After), Scheduled Flow, Autolaunched Flow.

Q7. Difference between Standard and Custom Object?
πŸ‘‰ Standard β†’ Predefined by Salesforce (Account, Opportunity).
πŸ‘‰ Custom β†’ Created by developers.

Q8. Explain Relationship types in Salesforce.
πŸ‘‰ Lookup, Master-Detail, Many-to-Many (via junction object).

Q9. What is the difference between SOQL and SOSL?
πŸ‘‰ SOQL – Structured query on one object at a time.
πŸ‘‰ SOSL – Full-text search across multiple objects.

Q10. What are Governor Limit best practices?
πŸ‘‰ Use bulkified code, avoid SOQL/DML inside loops, use maps/sets, prefer @future/Queueable for async processing.


πŸ”Ή Section 2: Apex & Triggers (Q11–Q20)

Q11. What is a Trigger in Salesforce?
πŸ‘‰ Apex code that executes before/after DML operations.

Q12. How to handle bulk inserts in a Trigger?
πŸ‘‰ Always bulkify with Collections (List, Map, Set).

Q13. Real-time Scenario: You need to stop deleting Accounts if related Opportunities exist.
πŸ‘‰ Use before delete trigger with a query on Opportunity.

Q14. How do you handle recursion in Triggers?
πŸ‘‰ Use static variable in handler class.

Q15. Difference between before and after trigger?
πŸ‘‰ Before – Modify values before saving (validation, default values).
πŸ‘‰ After – Work with committed record (callouts, DML on related objects).

Q16. Can we call a future method from a Batch?
πŸ‘‰ No, but you can call Queueable from Batch.

Q17. How do you write a test class for Triggers?
πŸ‘‰ Create test data, insert/update records, use Test.startTest() and Test.stopTest().

Q18. What is a context variable in Triggers?
πŸ‘‰ Examples: Trigger.isInsert, Trigger.isUpdate, Trigger.isDelete, Trigger.new, Trigger.old.

Q19. How do you design a Trigger framework?
πŸ‘‰ One trigger per object β†’ Call Handler class β†’ Manage events separately (beforeInsert, afterUpdate).

Q20. Real-time Scenario: You have to update Contact email if related Account email changes.
πŸ‘‰ Use after update trigger on Account.


πŸ”Ή Section 3: SOQL & Database (Q21–Q30)

Q21. What is a SOQL Injection? How do you prevent it?
πŸ‘‰ Similar to SQL injection β†’ malicious query input.
πŸ‘‰ Fix β†’ Use bind variables or escapeSingleQuotes.

Q22. Difference between Relationship Query (Parent-to-Child vs Child-to-Parent)?
πŸ‘‰ Parent-to-Child β†’ Subquery with relationship name.
πŸ‘‰ Child-to-Parent β†’ Dot notation.

Q23. How to fetch all Accounts with related Contacts using SOQL?
πŸ‘‰ SELECT Id, Name, (SELECT Id, LastName FROM Contacts) FROM Account

Q24. Difference between COUNT() and COUNT_FIELD()?
πŸ‘‰ COUNT() β†’ Count all rows.
πŸ‘‰ COUNT(Field) β†’ Count rows where field is not null.

Q25. How do you write efficient SOQL queries?
πŸ‘‰ Use selective filters, avoid nested loops, use indexed fields.

Q26. Explain FOR UPDATE in SOQL.
πŸ‘‰ Locks records to prevent other transactions from updating.

Q27. What are Aggregate Queries?
πŸ‘‰ Queries with COUNT, SUM, AVG, MAX, MIN, GROUP BY, HAVING.

Q28. Real Scenario: Get number of Opportunities by StageName.
πŸ‘‰ SELECT StageName, COUNT(Id) FROM Opportunity GROUP BY StageName

Q29. What are Skinny Tables?
πŸ‘‰ Custom tables managed by Salesforce to improve query performance.

Q30. Difference between Database.insert and insert?
πŸ‘‰ Database.insert β†’ Returns saveResult, can do partial insert with allOrNone=false.
πŸ‘‰ insert β†’ All or none.


πŸ”Ή Section 4: Lightning Web Components (LWC) (Q31–Q40)

Q31. Difference between LWC and Aura?
πŸ‘‰ LWC β†’ Web standards, better performance, reusable, less boilerplate.
πŸ‘‰ Aura β†’ Legacy, slower, more code.

Q32. What are decorators in LWC?
πŸ‘‰ @api β†’ Expose property to parent.
πŸ‘‰ @track β†’ Reactive state.
πŸ‘‰ @wire β†’ Call Salesforce data.

Q33. Parent-to-Child communication in LWC?
πŸ‘‰ Use @api properties.

Q34. Child-to-Parent communication in LWC?
πŸ‘‰ Use custom events with dispatchEvent().

Q35. Difference between @wire and imperative Apex?
πŸ‘‰ @wire β†’ Reactive, cacheable, auto refresh.
πŸ‘‰ Imperative β†’ Manual, dynamic, supports DML/callouts.

Q36. Real-time Scenario: You need to fetch Account list on button click.
πŸ‘‰ Use imperative Apex call.

Q37. How do you handle LDS in LWC?
πŸ‘‰ Use lightning-record-form, lightning-record-view-form, lightning-record-edit-form.

Q38. What are lifecycle hooks in LWC?
πŸ‘‰ connectedCallback, renderedCallback, disconnectedCallback.

Q39. How do you import Apex method in LWC?
πŸ‘‰ import getAccounts from '@salesforce/apex/AccountController.getAccounts';

Q40. Real-time Scenario: File Upload in LWC
πŸ‘‰ Use <lightning-file-upload> with Apex for metadata storage.


πŸ”Ή Section 5: Asynchronous Apex & Integrations (Q41–Q50)

Q41. Difference between Future, Batch, Queueable, and Scheduled Apex?
πŸ‘‰ Future β†’ For simple async (like callouts).
πŸ‘‰ Batch β†’ For large data.
πŸ‘‰ Queueable β†’ Chain jobs, complex logic.
πŸ‘‰ Scheduled β†’ Run at specific time.

Q42. Can we call Queueable from Batch?
πŸ‘‰ Yes.

Q43. Real-time Scenario: Process 5 million records. Which async to choose?
πŸ‘‰ Batch Apex.

Q44. How do you make a Callout from Apex?
πŸ‘‰ Use HttpRequest & HttpResponse. Must enable Remote Site Settings / Named Credentials.

Q45. What is Continuation in Apex?
πŸ‘‰ Used for long-running callouts to avoid hitting limits.

Q46. Difference between REST and SOAP integration in Salesforce?
πŸ‘‰ REST – Lightweight, JSON, simple.
πŸ‘‰ SOAP – XML, more secure, strict contract.

Q47. How to expose Salesforce data as REST API?
πŸ‘‰ Annotate Apex with @RestResource and @HttpGet/Post.

Q48. What are Platform Events?
πŸ‘‰ Pub-Sub model, used for event-driven architecture.

Q49. Real-time Scenario: Send notification when an Opportunity is Closed Won.
πŸ‘‰ Publish Platform Event in Apex, subscribe in LWC/Flow.

Q50. Best Practices for Integration in Salesforce?
πŸ‘‰ Use Named Credentials, limit callouts, handle retries, use Queueable for async.


🎯 Final Words

These 50 Salesforce Developer Interview Questions cover Admin, Apex, LWC, SOQL, Triggers, Flows, and Integration β€” the most frequently asked topics in 2025 interviews.

πŸ‘‰ Bookmark this page and practice these Q&A daily.
πŸ‘‰ Focus more on real-world scenarios than just definitions β€” because that’s what recruiters actually test.

πŸ“š More Resources for You

Here are some resources to go deeper:

πŸ”— 100 Scenarios (1–4 YOE)
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πŸ”— LWC Q&A (Real Answers Explained)
πŸ”— 600+ Qs from Recruiter Calls
πŸ”— TCS, Infosys, EY Interview Qs
πŸ”— Salesforce Project – Hindi + English

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