Salesforce Developer Interview Questions and Answers for 2025

In 2025, the demand for skilled Salesforce developers is at an all-time high. As organizations continue to leverage Salesforce’s robust CRM capabilities, the need for proficient developers has surged. Whether you’re a seasoned professional or a newcomer aiming to break into the Salesforce ecosystem, acing the interview is crucial. This guide delves into the most pertinent Salesforce Developer interview questions, providing detailed answers, real-world scenarios, and best practices to help you succeed.

Core Technical Questions

1. What is Apex, and how does it differ from Java?

Salesforce developed Apex as a strongly typed, object-oriented programming language. While it shares syntax and structure with Java, Apex specifically operates within the Salesforce platform’s multi-tenant environment. Unlike Java, Apex has built-in governor limits to ensure efficient use of shared resources.

2. Explain the concept of Governor Limits in Salesforce.

Governor Limits are runtime limits enforced by Salesforce to ensure efficient use of shared resources. They include restrictions on the number of SOQL queries, DML statements, and other operations that can be performed in a single transaction. Understanding and adhering to these limits is crucial for developing scalable and efficient applications.

3. What are the differences between SOQL and SOSL?

SOQL (Salesforce Object Query Language): Used to retrieve records from a single object or related objects. It is similar to SQL but is tailored for Salesforce’s data model.
SOSL (Salesforce Object Search Language): Used to perform text searches in records across multiple objects. It is particularly useful for searching for records when you don’t know which object contains the data.

4. What is the purpose of Apex Triggers?

Apex Triggers are pieces of code that execute before or after data manipulation language (DML) operations, such as insert, update, delete, or undelete, on Salesforce records. They enable developers to perform custom actions in response to changes in Salesforce data.

5. How do you prevent recursive triggers?

To prevent recursive triggers, you can use static variables to track whether a trigger has already executed. For example, setting a static Boolean variable to true at the start of the trigger and checking its value before executing the trigger logic can prevent multiple executions.

Advanced Development Topics

6. What are Lightning Web Components (LWC), and how do they differ from Aura Components?

Lightning Web Components (LWC) are a modern framework for building user interfaces in Salesforce. They leverage web standards like JavaScript, HTML, and CSS, offering improved performance and a more streamlined development experience compared to Aura Components.

7. Explain the concept of Bulkification in Apex.

Bulkification refers to the practice of writing code that can handle multiple records at once, rather than processing them individually. This approach helps to avoid hitting governor limits and ensures that the code can scale efficiently.

8. What is Batch Apex, and when would you use it?

Batch Apex is used to process large volumes of records asynchronously. It allows you to break up a large job into smaller, manageable chunks, reducing the risk of hitting governor limits. You would use Batch Apex when you need to process more than 50,000 records or when the operations in your code could exceed normal limits.

9. What is Queueable Apex, and how does it differ from Batch Apex?

Queueable Apex provides a way to run asynchronous jobs that can be chained together. It offers more flexibility and control compared to Batch Apex. While Batch Apex is ideal for operations on large volumes of records, Queueable Apex is suitable for smaller, more specific tasks that require asynchronous processing.

10. How do you handle asynchronous operations in Salesforce?

Salesforce provides several mechanisms for handling asynchronous operations, including:

@future methods: Used to run operations asynchronously in the background.
Queueable Apex: Allows you to add jobs to the queue for future execution.
Batch Apex: Processes large data sets by breaking them into smaller chunks.
Scheduled Apex: Runs Apex classes at specified intervals.

Integration and Deployment

11. How can you integrate Salesforce with external systems?

Salesforce can be integrated with external systems using various methods, including:

REST API: For lightweight, stateless integrations.
SOAP API: For enterprise-level integrations requiring a formal contract.
Outbound Messages: For simple, declarative integrations.
Middleware Tools: Such as MuleSoft, for complex integrations.

12. What are Named Credentials in Salesforce?

Named Credentials are a secure and convenient way to store authentication settings for external systems. They allow you to define the endpoint URL and authentication parameters in one place, reducing the need to hardcode sensitive information in your code.

13. Explain the deployment process in Salesforce.

Deployment in Salesforce involves moving metadata components from one environment to another. This can be achieved using:

Change Sets: For transferring components between related Salesforce orgs.
Salesforce CLI (SFDX): For source-driven development and deployment.
Ant Migration Tool: For deploying metadata using Apache Ant

14. How do you ensure smooth deployments and avoid errors during release cycles?

To ensure a smooth deployment in Salesforce:

Use Sandboxes for Testing: Always validate in a full or partial sandbox before deploying to production.
Check Code Coverage: Ensure 75%+ coverage, with all critical logic paths tested.
Leverage Version Control: Tools like Git help manage changes, rollbacks, and parallel development.
Use Deployment Tools: Salesforce CLI (SFDX), Jenkins, and Copado are widely used in CI/CD pipelines.
Run Validation Deployments: Especially when using Change Sets, always “validate” before “deploy.”

Testing and Best Practices

15. What are Apex Test Classes, and why are they important?

Apex test classes are used to verify that your code works as expected and complies with Salesforce’s deployment rules. They:

Help validate functionality and logic.
Are mandatory for deployment to production.
Should test both positive and negative scenarios.

16. Explain the use of Test.startTest() and Test.stopTest()

These methods define the scope of a test and reset governor limits within the test context, allowing you to simulate how code behaves with a fresh set of limits.

Test.startTest();

// call your logic here

Test.stopTest();

Scenario-Based Questions

17. Scenario: You have a trigger that updates child records when the parent is updated. How would you handle this to avoid recursion and bulk errors?

Use static variables to avoid recursion.
Ensure the trigger is bulkified using Trigger.newMap.
Prefer batch or queueable classes if updates exceed processing limits.

18. Scenario: A user complains of data visibility issues. How do you troubleshoot?

Check the Object-Level Security (OLS).
Review Field-Level Security (FLS).
Verify Sharing Settings (Org-wide Defaults, Role Hierarchies, Sharing Rules).
Use the “Sharing” button and the Login-As feature to simulate the issue.

Final Thoughts

The Salesforce Developer interview landscape in 2025 is competitive, technical, and solution-driven. By preparing for the most common and challenging Salesforce Developer Interview Questions ahead of time, you’ll walk into interviews with confidence and clarity. Whether you aim to work at a Salesforce ISV partner, enterprise client, or consultancy, mastering these questions gives you a critical edge.

FAQs

Q1: How often does Salesforce release new features?

Salesforce follows a triannual release cycle: Spring, Summer, and Winter. Staying updated with Salesforce Release Notes is crucial.

Q2: Do Salesforce Certifications matter in interviews?

Yes, certifications like Platform Developer I & II significantly boost credibility. They validate your expertise and dedication to the ecosystem.

Q3: What’s the best resource for Salesforce practice?

Use Trailhead, the official Salesforce learning platform, and developer forums like Salesforce Stack Exchange.

Q4: How should I answer questions about projects?

Use the STAR method (Situation, Task, Action, Result). Focus on how you solved a business problem using Salesforce capabilities.

Q5: What are the most important Salesforce Developer Interview Questions to prepare for in 2025?

The most important Salesforce Developer Interview Questions in 2025 cover Apex programming, Lightning Web Components (LWC), SOQL vs SOSL, governor limits, and integration techniques. Preparing answers on these topics will boost your chances of success.

Q6: How can I effectively prepare for Salesforce Developer Interview Questions?

To effectively prepare for Salesforce Developer Interview Questions, focus on hands-on practice with Apex triggers, bulkification, asynchronous Apex, and Lightning components. Utilize resources like Trailhead, official Salesforce docs, and mock interviews.

Salesforce Developer interview questions