Salesforce Developer Interview Questions
Salesforce, a trailblazer in customer relationship management, offers businesses the tools to foster stronger client relationships and optimize sales processes. With the platform's customization capabilities, the role of Salesforce developers becomes indispensable. This guide provides a curated set of 25 questions, meticulously designed to assess a developer's proficiency in Apex code, Visualforce, and the intricacies of the Salesforce ecosystem. By incorporating these questions into their hiring framework, organizations can ensure they select developers adept at tailoring Salesforce solutions to meet nuanced business requirements.
Can you explain the MVC architecture in Salesforce?
Answer: It's a framework that divides an application into three interconnected components: Model (database), View (UI), and Controller (business logic), ensuring modular and structured development.
How do you ensure the security of data in Salesforce?
Answer: By using features like Field-Level Security, Profiles, Permission Sets, and utilizing encryption and sharing rules.
What is the role of a Controller in Visualforce?
Answer: A Controller manages the data, actions, and interactions in Visualforce pages, either as standard controllers or custom ones written in Apex.
Describe the difference between Trigger and Process Builder.
Answer: While both automate processes, Triggers are written in Apex and offer more complexity, whereas Process Builder provides a GUI for creating automated workflows.
How do you handle governor limits in Salesforce?
Answer: By using batch processes, optimizing SOQL queries, and employing best coding practices to ensure efficient resource usage.
Explain the concept of sandboxes in Salesforce.
Answer: Sandboxes are isolated environments where developers can test and build features without affecting the live production environment.
How do you ensure data quality in Salesforce applications?
Answer: Implement validation rules, duplicate rules, and utilize tools like Data Loader for clean data imports.
What are the key differences between Workflow and Lightning Flow?
Answer: Workflow is rule-based for automating actions, while Lightning Flow allows for a more detailed process automation using a visual designer.
How familiar are you with Salesforce APIs, and when have you used them?
Answer: Salesforce APIs allow external integrations. I've used SOAP and REST APIs for integration with other platforms.
Describe a challenging project you've worked on in Salesforce and how you overcame its challenges.
Answer: Challenges vary, but solutions often involve collaboration, research, and leveraging Salesforce's extensive documentation and community.
How do you stay updated with the frequent updates in the Salesforce platform?
Answer: Through Salesforce's official documentation, webinars, developer forums, and attending Dreamforce.
How do you ensure optimal performance for a Salesforce app?
Answer: Regularly review and optimize code, avoid SOQL in loops, and use tools like the Query Plan tool to optimize large data volume queries.
Can you explain the difference between a role and a profile in Salesforce?
Answer: Profiles define how users access objects and data, while roles define the level of record visibility a user has.
How do you handle testing in Salesforce?
Answer: By writing unit tests in Apex, ensuring adequate code coverage, and using testing sandboxes for real-world scenarios.
Describe your experience with Salesforce Lightning.
Answer: Lightning offers a modern UI and improved performance. I've built custom Lightning components and migrated classic apps to Lightning.
How do you handle errors in Apex?
Answer: Utilizing try-catch blocks, writing meaningful error messages, and implementing robust logging mechanisms.
What is the purpose of SOQL and SOSL?
Answer: SOQL queries specific objects in Salesforce, while SOSL searches multiple objects for text.
Describe the process of migrating changes from a sandbox to production.
Answer: Using Change Sets or tools like Salesforce DX to package and deploy changes, after thorough testing.
How do you handle version control in Salesforce development?
Answer: By integrating Salesforce with tools like Git, ensuring regular commits, and clear documentation of changes.
What are some common use-cases for using batch Apex?
Answer: For processing large sets of data, which exceed governor limits, such as mass updates or complex processing.
How do you approach working with non-technical stakeholders on Salesforce projects?
Answer: With clear communication, translating technical details into understandable terms, and ensuring their requirements are met.
How would you handle a situation where you're unfamiliar with a specific feature or request in Salesforce?
Answer: Research the official Salesforce documentation, utilize developer forums, and if necessary, seek expert advice or training.
Describe the importance of relationships in Salesforce and how you've utilized them.
Answer: Relationships (like lookup, master-detail) define how objects relate to each other, allowing for structured data representation and efficient querying.
How do you ensure that the custom Salesforce solutions you develop are scalable and maintainable?
Answer: Adhering to best practices, writing modular and commented code, and considering future growth and changes during the design phase.
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