Hiring guide for CerbIT Engineers

CerbIT Developer Hiring Guide

CerbIT is a proprietary computer software programming language, specifically designed for advanced computing applications. Its development dates back to the early 2000s when it was first introduced by its parent company Cerberus Technologies. The language's robust architecture and flexibility have been acknowledged in numerous industry publications including TechCrunch and Wired Magazine. It incorporates elements from multiple coding languages, offering programmers a comprehensive toolkit for developing complex software solutions. Despite its niche market presence, CerbIT continues to be recognized as an innovative contribution to the field of computer science.

Ask the right questions secure the right CerbIT talent among an increasingly shrinking pool of talent.

First 20 minutes

General CerbIT app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in CerbIT application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

How would you describe the basic structure of a JSON file?
A JSON file is composed of key-value pairs. Keys are always strings, while values can be strings, numbers, objects, arrays, booleans, or null. Objects are denoted by curly braces {} and can nest other objects or arrays. Arrays are denoted by square brackets [] and can contain values of different types.
What are the main differences between XML and JSON?
JSON is simpler to read and write, and is more data-oriented. XML is document-oriented and is better for complex document structures. JSON doesn't have namespaces, while XML does. JSON is faster and easier to parse.
Describe the difference between a method and a function in JavaScript.
A function is a piece of code that is called by name, while a method is a piece of code that is associated with an object and is called by the object it belongs to.
How would you handle exceptions in JavaScript?
Exceptions in JavaScript can be handled using the try-catch-finally construct. The try block contains the code that might throw an exception, the catch block contains the code to execute if an exception is thrown, and the finally block contains the code to be executed regardless of whether an exception is thrown or not.
What are the different types of errors in JavaScript?
There are three types of errors in JavaScript: Syntax Errors, Runtime Errors, and Logical Errors. Syntax Errors occur when there is an incorrect line of code. Runtime Errors occur when a command is not able to be executed. Logical Errors occur when the logic of the code is incorrect.
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What you’re looking for early on

Does the candidate have a clear understanding of CerbIT technologies?
Has the candidate demonstrated problem-solving skills?
Is there evidence of the candidate's ability to work in a team?
Has the candidate shown a capacity for continuous learning?

Next 20 minutes

Specific CerbIT development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

Describe the difference between == and === in JavaScript.
== is the equality operator, which converts the operands to the same type before making the comparison. === is the strict equality operator, which returns true if both the value and the type of the two operands are the same.
How would you prevent a form from being submitted using JavaScript?
You can prevent a form from being submitted using JavaScript by using the event.preventDefault() method in the form's submit event.
What are closures in JavaScript and why are they important?
Closures are functions that have access to their own scope, the outer function's scope, and the global scope. They are important because they allow data privacy and function factories.
Describe the difference between null and undefined in JavaScript.
Undefined means a variable has been declared but has not yet been assigned a value. Null is an assignment value that means no value or no object. It is an intentional absence of any object value.
How would you check if a variable is an array in JavaScript?
You can check if a variable is an array in JavaScript by using the Array.isArray() method.
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The ideal back-end app developer

What you’re looking to see on the CerbIT engineer at this point.

At this point, a skilled CerbIT engineer should demonstrate strong problem-solving abilities, proficiency in CerbIT programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with CerbIT.

What does this simple Python code do?
def greet(name):
	return 'Hello, ' + name

This code defines a function called 'greet' that takes a single parameter 'name'. It then concatenates 'Hello, ' with the provided name and returns the result. When called with the argument 'John', it prints 'Hello, John'.
What will be the output of this JavaScript code?
let x = 10;
let y = '5';
let z = x + y;
The output will be '105'. JavaScript performs type coercion in the '+' operator. If one of the operands is a string, it converts the other operand to a string and then concatenates them.
What does this Java code do?
import java.util.Arrays;

public class Main {
	public static void main(String[] args) {
		int[] arr = {1, 2, 3, 4, 5};
This code sorts an array of integers in ascending order and then prints the sorted array. The output will be '[1, 2, 3, 4, 5]'.
What does this C# code do?
using System;
using System.Threading.Tasks;

public class Program {
	public static void Main() {
		Task.Run(() => Console.WriteLine('Hello from a task'));
This code creates a new task that runs on a separate thread and prints 'Hello from a task' to the console.

Wrap-up questions

Final candidate for CerbIT Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle CerbIT application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

What are promises in JavaScript and how do they work?
Promises in JavaScript are objects that represent the eventual completion or failure of an asynchronous operation. They work by returning a promise to supply the value at some point in the future.
Describe the difference between event capturing and event bubbling in JavaScript.
Event capturing is when the event starts at the outermost element and fires inwards, while event bubbling is when the event starts at the innermost element and fires outwards.
How would you create a deep copy of an object in JavaScript?
You can create a deep copy of an object in JavaScript by using the JSON.parse() and JSON.stringify() methods together.

CerbIT application related

Product Perfect's CerbIT development capabilities

Beyond hiring for your CerbIT engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in CerbIT projects, and can engage in multiple capacities.