Preparing for a Salesforce Developer interview can feel overwhelming, especially when you do not know what type of questions companies actually ask.
Some interviews focus heavily on Apex and triggers. Others test Lightning Web Components (LWC), integrations, SOQL, security, or real-world problem solving. In many cases, interviewers also check whether you understand Salesforce best practices instead of only memorizing definitions.
Therefore, proper preparation is extremely important.
In this guide, you will learn the most common Salesforce Developer interview questions for both freshers and experienced professionals. Additionally, you will understand how interviewers expect candidates to answer these questions in real projects.
If you are still building your Salesforce development foundation, you should also read:
- Salesforce Workbench Tutorial for Beginners
- SOQL Query Examples for Beginners in Salesforce
- Lightning Web Components (LWC) Tutorial for Beginners in Salesforce (2026 Guide)
- Salesforce CLI Installation and Setup Guide
- Salesforce Workbench Tutorial for Beginners
These topics are deeply connected with developer interviews.
Basic Salesforce Developer Interview Questions
What is Salesforce?
Salesforce is a cloud-based CRM platform that helps businesses manage sales, customer service, marketing, automation, and business processes.
Additionally, Salesforce provides development tools like:
- Apex
- Lightning Web Components
- APIs
- Flow
- SOQL
- Integrations
which allow developers to build custom business applications.
What is Apex in Salesforce?
Apex is Salesforce’s programming language.
It is similar to Java and is mainly used for:
- writing business logic,
- creating triggers,
- building integrations,
- and automating complex operations.
For example, developers use Apex when Salesforce Flow or validation rules cannot handle advanced requirements.
What is a Trigger in Salesforce?
A trigger is Apex code that runs automatically before or after database events.
These events include:
- insert,
- update,
- delete,
- undelete.
Triggers are commonly used for:
- automation,
- validations,
- updating related records,
- and enforcing business rules.
You can learn this topic in detail in:
Apex Trigger Tutorial for Beginners in Salesforce.
Difference Between Before Trigger and After Trigger
| Before Trigger | After Trigger |
|---|---|
| Runs before record save | Runs after record save |
| Used for validation and field updates | Used for related records and integrations |
| Faster for direct field updates | Required when record ID is needed |
What is SOQL?
SOQL stands for Salesforce Object Query Language.
It is used to retrieve data from Salesforce objects.
Example:
SELECT Id, Name FROM AccountSOQL is one of the most important interview topics because developers use it almost everywhere in Apex.
You should also practice:
- relationship queries,
- aggregate queries,
- WHERE conditions,
- ORDER BY,
- LIMIT,
- and bulk query handling.
Related guide:
SOQL Query Examples for Beginners in Salesforce.
Intermediate Salesforce Developer Interview Questions
What Are Governor Limits?
Governor limits are Salesforce runtime limits that prevent one piece of code from consuming too many shared resources.
Examples include:
- SOQL query limits,
- DML limits,
- CPU time limits,
- heap size limits.
Interviewers ask this question very frequently because Salesforce is a multi-tenant platform.
A strong developer always writes optimized and bulkified code.
What is Bulkification in Apex?
Bulkification means writing code that can handle multiple records efficiently instead of processing only one record at a time.
Bad Example:
for(Account acc : Trigger.new){
insert new Contact(LastName='Test');
}Good Example:
List<Contact> contacts = new List<Contact>();
for(Account acc : Trigger.new){
contacts.add(new Contact(LastName='Test'));
}
insert contacts;Bulkification helps avoid governor limit errors.
What is the Difference Between Workflow, Process Builder, and Flow?
| Tool | Status |
|---|---|
| Workflow Rules | Older automation tool |
| Process Builder | Being retired |
| Salesforce Flow | Recommended modern automation |
Today, Salesforce recommends using Flow for most automation requirements.
Learn more:
Salesforce Flow Tutorial for Beginners.
What is a Queueable Apex?
Queueable Apex allows asynchronous processing in Salesforce.
It is commonly used for:
- long-running operations,
- callouts,
- background processing,
- and large data operations.
Queueable Apex is more flexible than Future Methods.
What is a Future Method?
Future methods run asynchronously in the background.
They are mainly used for:
- callouts,
- non-blocking operations,
- and delayed processing.
Example:
@future
public static void processData(){
}However, Salesforce now recommends Queueable Apex in many scenarios.
LWC Interview Questions
What is Lightning Web Components (LWC)?
Lightning Web Components is Salesforce’s modern frontend framework built using:
- HTML,
- JavaScript,
- CSS.
LWC offers:
- better performance,
- reusable components,
- faster rendering,
- and modern web standards.
Detailed guide:
Lightning Web Components (LWC) Tutorial for Beginners in Salesforce.
Difference Between Aura and LWC
| LWC | Aura |
|---|---|
| Faster | Slower |
| Modern JavaScript | Salesforce-specific syntax |
| Better performance | Heavy framework |
| Preferred by Salesforce | Legacy support |
What is @wire in LWC?
The @wire decorator retrieves Salesforce data reactively.
Example:
@wire(getRecord, { recordId: '$recordId', fields })
record;It automatically refreshes data when values change.
Difference Between Imperative Apex and Wire Service
| Wire Service | Imperative Apex |
|---|---|
| Reactive | Manual call |
| Automatic updates | Explicit execution |
| Simpler for reads | Better for complex logic |
Integration Interview Questions
What is REST API in Salesforce?
REST API allows external systems to communicate with Salesforce using HTTP methods like:
- GET,
- POST,
- PUT,
- DELETE.
REST APIs are widely used in integrations because they are lightweight and simple.
Difference Between REST API and SOAP API
| REST API | SOAP API |
|---|---|
| Lightweight | Heavier |
| JSON support | XML support |
| Easier to use | More structured |
| Popular for web apps | Enterprise systems |
What is OAuth in Salesforce?
OAuth is an authentication mechanism used to securely connect applications with Salesforce.
It helps external systems access Salesforce data without sharing passwords directly.
Scenario-Based Salesforce Interview Questions
How Would You Prevent Recursive Triggers?
Recursive triggers happen when a trigger updates records repeatedly.
Developers usually prevent recursion using:
- static variables,
- trigger frameworks,
- or recursion guards.
Example:
public class TriggerHelper {
public static Boolean isRunning = false;
}How Would You Handle Large Data Volumes?
Good answers include:
- bulkified code,
- selective SOQL queries,
- batch apex,
- indexed fields,
- asynchronous processing,
- avoiding nested loops.
Interviewers often ask this to test real-world scalability understanding.
How Would You Optimize SOQL Performance?
You can improve SOQL performance by:
- querying only required fields,
- avoiding queries inside loops,
- using indexed filters,
- limiting returned records,
- using selective WHERE clauses.
Salesforce Security Interview Questions
What is CRUD and FLS?
CRUD:
- Create
- Read
- Update
- Delete
FLS:
- Field-Level Security
These controls define user access permissions inside Salesforce.
Difference Between Profiles and Roles
| Profiles | Roles |
|---|---|
| Control permissions | Control record visibility |
| Mandatory | Optional |
| Object access | Sharing hierarchy |
Advanced Salesforce Developer Questions
What is Batch Apex?
Batch Apex processes large datasets asynchronously in smaller chunks.
It is useful when processing thousands or millions of records.
What is a Trigger Handler Framework?
A Trigger Handler Framework separates trigger logic into reusable Apex classes.
Benefits:
- cleaner code,
- better maintenance,
- easier testing,
- scalable architecture.
Many experienced interviewers expect candidates to understand this concept.
What is Dynamic SOQL?
Dynamic SOQL allows query creation at runtime.
Example:
String query = 'SELECT Id FROM Account';
List<Account> accs = Database.query(query);Salesforce Developer Interview Preparation Tips
Practice Real Scenarios
Do not only memorize definitions.
Interviewers prefer candidates who can:
- explain business use cases,
- optimize logic,
- and debug problems.
Build Small Projects
Create mini projects using:
- Apex,
- Flow,
- LWC,
- SOQL,
- APIs.
Hands-on experience improves confidence significantly.
Focus on Fundamentals
Strong basics matter more than memorizing advanced topics.
Master:
- triggers,
- SOQL,
- governor limits,
- security,
- LWC basics,
- integrations.
Learn Salesforce Tools
Developers often work with:
- VS Code,
- Salesforce CLI,
- Workbench,
- Developer Console,
- Data Loader.
Final Thoughts
Salesforce Developer interviews are becoming more practical every year.
Companies now expect candidates to understand:
- real-world business problems,
- scalable development,
- clean coding practices,
- and Salesforce platform limitations.
Therefore, focus on concepts instead of memorizing random answers.
Start with fundamentals first. Then gradually move into:
- Apex,
- LWC,
- integrations,
- asynchronous processing,
- and architecture patterns.
Most importantly, keep practicing regularly because Salesforce development improves through hands-on experience much faster than theory alone.
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