Optimum Infosystem Senior Software Engineer Interview Questions and Answers for Experienced

Q1. Different trigger pattern
Ans. 
Different trigger patterns are used in software development to initiate actions based on specific events.
• Triggers can be based on time, user input, system events, etc.

• Examples include event-driven programming, polling triggers, and scheduled triggers.
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Q2. Scenario based: trigger make one callout per record and 1000 record are updated how will you handle it?
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Q3. Update account with count of contact.
Ans. 
Update account with count of contact involves updating the account with the number of contacts associated with it.
• Create a function to update the account with the count of contacts

• Retrieve the contacts associated with the account

• Calculate the count of contacts

• Update the account with the count of contacts
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Q4. How do you share record using owd
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Sharing records using Organization Wide Defaults (OWD) in Salesforce
• Set OWD to Public Read Only to allow all users to view records but only the owner can edit

• Set OWD to Private to restrict access to only the record owner and users above in the role hierarchy

• Use Sharing Rules to extend access to specific groups of users

• Use Manual Sharing to grant access to individual users or groups on a case-by-case basis
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Q1. Difference between with sharing, without sharing and inherited sharing.
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with sharing enforces sharing rules, without sharing doesn't enforce sharing rules, inherited sharing uses the sharing rules of the parent class
• with sharing keyword enforces sharing rules specified in the organization-wide defaults

• without sharing keyword doesn't enforce sharing rules, allowing access to all records

• inherited sharing keyword uses the sharing rules of the parent class
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Q2. Explain async process in Salesforce
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Async process in Salesforce allows for executing tasks in the background without blocking the main thread.
• Async processes in Salesforce are used to perform time-consuming operations without affecting the user experience.

• Apex provides @future annotation for asynchronous processing.

• Batch Apex is used for processing large data sets asynchronously.

• Queueable Apex allows chaining of asynchronous jobs.

• Platform Events can be u
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Q1. Create table view for different profile and can have more then 60 column. How to implement dynamically
Ans. 
Use dynamic SQL to create table view with more than 60 columns for different profiles
• Use dynamic SQL to generate the CREATE VIEW statement based on the profile requirements

• Iterate through the profile columns and add them to the CREATE VIEW statement dynamically

• Consider using a loop or a mapping function to handle the large number of columns efficiently
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Q2. How to handle recursion
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Recursion is a programming technique where a function calls itself in order to solve a problem.
• Identify the base case to stop the recursion

• Ensure the recursive call moves towards the base case

• Optimize recursion by using memoization or tail recursion

• Examples: factorial calculation, Fibonacci sequence
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Q1. All about hoisting
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Q2. UseMemo, UseCallback in Detail
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Medium to hard question

Q1. Core java and dsa algorithm
Ans. 
Core Java is a fundamental programming language used for developing software applications. DSA algorithms are essential for efficient problem-solving.
• Core Java is used for developing software applications and is based on the Java programming language.

• DSA algorithms are data structures and algorithms used for efficient problem-solving.

• Examples of DSA algorithms include sorting algorithms like Bubble Sort and searching a
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Q1. Core java and dsa problems
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Q1. Dsa problems and system design
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DSA problems involve solving algorithmic challenges, while system design involves designing scalable and efficient software systems.
• Practice solving DSA problems on platforms like LeetCode, HackerRank, or CodeSignal.

• Study common data structures and algorithms like arrays, linked lists, trees, sorting algorithms, and searching algorithms.

• For system design, focus on scalability, reliability, performance, and maintainabil...read more
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Online coding test on hackerrank - easy.

Q1. Technical interview 1
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Q1. Technical interview 2
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Q1. Technical interview 3
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Q1. HR discussion and salary bargaining.
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Q1. Java 8 interview questions
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Q2. Spring boot questions
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Q1. Microservices strurcture and implementation
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Q1. What is oops concept. How hashmap works
Ans. 
OOPs concept is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOPs stands for Object-Oriented Programming

• It focuses on creating objects that interact with each other to solve a problem

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPs

• HashMap in Java is a data structure that stores key-value pairs

• I...read more
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Q1. What are design patterns you have worked in your project
Ans. 
I have worked with design patterns such as Singleton, Factory, Observer, and Strategy in my projects.
• Singleton pattern was used to ensure only one instance of a class is created.

• Factory pattern was used to create objects without specifying the exact class of object that will be created.

• Observer pattern was used to define a one-to-many dependency between objects so that when one object changes state, all its dependents ...read more
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Q1. Are you able to work in hybrid mode
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Yes, I am able to work in hybrid mode which involves a combination of remote and on-site work.
• Experienced in collaborating with remote team members using communication tools like Slack, Zoom, and Jira

• Comfortable with switching between working on-site and remotely based on project requirements

• Adaptable to different work environments and able to maintain productivity in both settings
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Q1. Basic Js Question and Reactjs Questions
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Q1. Use case based Questions
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Q2. Salary Expectation
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Q3. Depends on skillset
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