How to prepare for Salesforce Platform Developer Interview ?

Preparing for a Salesforce Platform Developer interview can feel overwhelming, especially when aiming to cover all essential concepts in a short time. This detailed one-week plan is designed to help you tackle key topics, real-time coding tasks, and common interview questions. Whether you are starting fresh or refining your skills, this plan ensures comprehensive coverage to help you succeed.

Day 1: Mastering Apex Basics and Triggers

Concepts to Cover:

• Apex syntax, data types, and collections (lists, maps, sets)
• Classes, methods, access modifiers
• Triggers: before insert, after update, before delete, etc.

Real-Time Tasks:

• Write a trigger to prevent duplicate records based on a custom field.
• Implement a helper class to handle bulk operations within a trigger.

Interview Questions:

• What are the different trigger events in Salesforce?
• Write a trigger that auto-populates a custom field based on another object’s value.
• Explain the use of static variables in preventing recursion in triggers.

Resources:

• Apex Triggers Trailhead Module

Day 2: Understanding Governor Limits and Best Practices

Concepts to Cover:

• Apex Governor Limits and bulkification
• Writing efficient Apex code

Real-Time Tasks:

• Optimize Apex code to avoid hitting Governor Limits.
• Implement @future methods for asynchronous processing.

Interview Questions:

• What are common Governor Limits in Salesforce?
• Explain the use of Database.query vs. direct SOQL.
• When would you use @future annotation?

Resources:

• Best Practices for Apex Development

Day 3: Deep Dive into SOQL, SOSL, and DML Operations

Concepts to Cover:

• Writing SOQL and SOSL queries
• DML operations: insert, update, delete, upsert

Real-Time Tasks:

• Write a SOQL query to fetch related child records.
• Implement bulk upsert with error handling.

Interview Questions:

• Difference between SOQL and SOSL?
• How to handle exceptions in bulk DML operations?
• Write a query for accounts with more than 5 contacts.

Resources:

• SOQL and SOSL Basics

Day 4: Exploring Asynchronous Apex and Batch Apex

Concepts to Cover:

• Batch Apex, Queueable Apex, Scheduled Apex

Real-Time Tasks:

• Implement a Batch Apex to update records.
• Write a scheduled job for nightly data archiving.

Interview Questions:

• Difference between Batch and Queueable Apex?
• How to monitor and abort batch jobs?
• Write a Batch Apex for deleting inactive accounts.

Resources:

• Asynchronous Apex Guide

Day 5: Visualforce, Lightning Components, and LWC Basics

Concepts to Cover:

• Visualforce pages, controllers
• Lightning Web Components (LWC) basics

Real-Time Tasks:

• Build a Visualforce page with a custom controller.
• Create an LWC to display account data from Apex.

Interview Questions:

• Differences between Visualforce and LWC?
• Write an Apex method for LWC to fetch accounts.

Resources:

• LWC Developer Guide

Day 6: Security and Sharing in Salesforce

Concepts to Cover:

• Apex security: CRUD, FLS, Sharing Rules
• With Sharing and Without Sharing keywords

Real-Time Tasks:

• Implement sharing rules in Apex.
• Write Apex for object-level security checks.

Interview Questions:

• Difference between with sharing and without sharing?
• Enforcing field-level security in Apex?

Resources:

• Salesforce Security Basics

Day 7: Testing and Deployment Strategies

Concepts to Cover:

• Writing test classes, achieving code coverage
• Deployment: Change Sets, Salesforce CLI

Real-Time Tasks:

• Write a test class for an Apex trigger.
• Deploy a Salesforce app using CLI.

Interview Questions:

• Minimum code coverage required?
• Difference between Change Sets and Metadata API?

Resources:

• Apex Testing Best Practices

This one-week plan balances learning, hands-on practice, and interview preparation, making you confident and ready for your Salesforce Platform Developer interviews. Happy learning and good luck!