Hiring guide for Expressive Engineers

Expressive Developer Hiring Guide

Python is an interpreted, general-purpose, high-level programming language. It is designed to be easy to read and write. Python is dynamically typed and has a large standard library. It was created by Guido van Rossum in 1991 and is named after the British comedy group Monty Python. Sources: 1. https://en.wikipedia.org/wiki/Python_(programming_language) 2. https://www.python.org/about/gettingstarted/

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

First 20 minutes

General Expressive app knowledge and experience

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

How would you explain the concept of middleware in Expressive?
Middleware in Expressive is a bridge or pipeline connecting a request and a response. It is a function that has access to the request object, the response object, and the next middleware function in the application’s request-response cycle.
What are the main components of Expressive?
The main components of Expressive include the Router, Middleware, Error Handlers, and Templating engines.
Describe the difference between Expressive and Express.js?
Express.js is a minimal and flexible Node.js web application framework, while Expressive is a micro-framework from Zend Framework. Expressive is more flexible and allows for a higher level of customization compared to Express.js.
How would you handle errors in Expressive?
In Expressive, we can handle errors by using error middleware functions. These functions are similar to regular middleware functions but have an additional error parameter. When an error occurs, Expressive will pass the error to the error middleware function to handle it.
What is the role of the router in Expressive?
The router in Expressive is responsible for directing incoming requests to the correct handler based on the request's URL and HTTP method.
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What you’re looking for early on

Does the candidate have a strong understanding of Expressive and its concepts?
How well does the candidate solve problems?
Is the candidate able to communicate effectively?
Does the candidate show a willingness to learn and adapt?

Next 20 minutes

Specific Expressive 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.

How would you manage sessions in Expressive?
In Expressive, sessions can be managed using session middleware. The session middleware will create a new session object for each request, which can be used to store and retrieve data between requests.
What are the benefits of using Expressive for developing web applications?
Expressive provides a simple and flexible framework for developing web applications. It supports middleware architecture, which allows for easy customization and extension of the application. It also supports a variety of templating engines, making it easy to create dynamic web pages.
Describe the difference between synchronous and asynchronous code in the context of Expressive.
Synchronous code in Expressive is executed line by line, blocking the execution of subsequent code until it has finished. Asynchronous code, on the other hand, allows the execution of other code while it is waiting for a task to complete, improving the efficiency of the application.
How would you implement authentication in Expressive?
Authentication in Expressive can be implemented using middleware. The authentication middleware will check if the user is authenticated before allowing them to access certain routes or resources. If the user is not authenticated, the middleware can redirect them to a login page.
What is the role of a templating engine in Expressive?
A templating engine in Expressive is used to create HTML views with dynamic data. It allows developers to embed variables and expressions in the HTML which will be replaced with actual data when the view is rendered.
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The ideal back-end app developer

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

At this point, a skilled Expressive engineer should demonstrate strong problem-solving abilities, proficiency in Expressive 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 Expressive.

What does the following code do?
  "name": "John",
  "age": 30,
  "city": "New York"
This code defines a JSON object with three properties: name, age, and city. The values of these properties are "John", 30, and "New York" respectively.
What will be the output of the following code?
  "employees": [
    {"firstName": "John", "lastName": "Doe"},
    {"firstName": "Anna", "lastName": "Smith"},
    {"firstName": "Peter", "lastName": "Jones"}
This code defines a JSON object with a single property called 'employees'. The value of this property is an array of objects, each representing an employee with 'firstName' and 'lastName' properties.
What does the following code do?
  "books": [
    {"title": "The Great Gatsby", "author": "F. Scott Fitzgerald"},
    {"title": "To Kill a Mockingbird", "author": "Harper Lee"}
This code defines a JSON object with a single property called 'books'. The value of this property is an array of objects, each representing a book with 'title' and 'author' properties.
What will be the output of the following code?
  "person": {
    "name": "John",
    "age": 30,
    "city": "New York",
    "cars": [
This code defines a JSON object with a single property called 'person'. The value of this property is another JSON object with four properties: 'name', 'age', 'city', and 'cars'. The 'cars' property is an array of strings representing car brands.

Wrap-up questions

Final candidate for Expressive 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 Expressive application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

How would you implement CSRF protection in Expressive?
CSRF protection in Expressive can be implemented using CSRF middleware. The CSRF middleware will generate a unique token for each session and include it in all forms. When the form is submitted, the middleware will check if the token in the form matches the token in the session.
What are the different types of middleware in Expressive?
There are three types of middleware in Expressive: application middleware, router middleware, and error handling middleware. Application middleware is used for tasks that apply to all requests, router middleware is used for tasks that apply to specific routes, and error handling middleware is used to handle errors.
How would you handle file uploads in Expressive?
File uploads in Expressive can be handled using middleware. The middleware will parse the incoming request, extract the uploaded file, and store it in a specified location.

Expressive application related

Product Perfect's Expressive development capabilities

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