Backend Developer Assessment- Identify and hire top talents

The Backend Developer Assessment assesses candidates' proficiency in backend development, focusing on server-side programming, database interactions, and server management. It evaluates their skills in programming languages like Java, Python, or Node.js and their knowledge of backend frameworks, databases, and API development. This test identifies candidates who can design and implement robust and scalable backend solutions for web applications.

What is backend development?

Backend development involves working on server-side software that handles the behind-the-scenes functionality of a website. Backend developers are responsible for ensuring the proper performance of the website, with a focus on databases, backend logic, application programming interfaces (APIs), architecture, and servers.

Roles and responsibilities of a backend developer

Backend developers build and maintain websites, utilizing various tools, frameworks, and languages to develop user-friendly prototypes that are further transformed into fully functional websites. They need to understand cross-platform functionality and compatibility. Additionally, developers write high-quality, clean and easily maintainable code to ensure the sustainability of web applications. They perform quality assurance (QA), testing, creating and overseeing testing schedules to optimize the user interface and experience, ensuring optimal display on different browsers and devices. Furthermore, developers assess website efficiency and speed, making necessary adjustments to the code to improve performance and scalability. They troubleshoot and debug issues, communicating them to project managers, stakeholders, and QA teams. Backend developers provide training and support, maintaining workflows with client teams and mentoring junior developers.

What is inside this Backend Developer Test?

This test is meticulously designed to evaluate the candidate’s proficiency in the core responsibilities of a backend developer role. The test contains thirty MCQs and two coding questions to be completed within ninety minutes. In this test, seventeen questions are of basic difficulty level, and fifteen are of intermediate difficulty level. This test measures the skills and knowledge essential for the job, providing a detailed analysis of the candidate’s strengths and areas of improvement.

What skills does this Backend Developer Assessment cover? 

• Hands-on programming: This competency includes Codelysis - coding skills.  
• Java: This competency includes sub-skills such as Core Java – threads, Java – OOPS, Java - exception handling, Core Java - error and exception handling, Java and New VR, Core Java - OOP concepts, Core Java - interfaces and inheritance, Core Java - classes object and methods.  
• SQL: This competency includes sub-skills such as SQL, SQL – tables and SQL- clauses.  
• NoSQL- This competency includes MySQL 8 - Nowait and skip locked, MySQL 8 - JSON and Regex and MySQL - query optimization.

What roles can you assess using the Online Backend Developer Test?

• Java developers: They develop and manage Java-based applications and software, with organizations using Java to implement software systems and backend services.  
• Full-stack developer: They work on frontend and backend development processes. They design, develop, and maintain fully-fledged and functioning platforms with databases or servers.  
• Senior backend developer: A senior backend developer designs, codes, and enhances the server-side components of web applications. They are responsible for developing complex systems and databases, ensuring application scalability, working on API integration, and collaborating with frontend developers to create a seamless user experience.

Sample questions for the Backend Developer Assessment

1. What is the purpose of the backend?  

The backend, also known as the server-side software, powers a website and app. It stores and organizes data, handles user requests, and delivers content to the front end.  

2. What is a constructor?  

A constructor is used to initialize objects by Java; it is utilized when an object in a class is created. A constructor has the same name as its class. It is also syntactically like a method. However, a constructor has no explicit return type.  

3. What's the difference between wrapper classes and primitive data types?  

Wrapper classes allow using many primitive data types, such as Boolean or int, as objects. It transforms a primitive type into an object. However, a primitive type is a predefined data type that Java provides.  

4. What is exception handling?  

Exception handling refers to the method of handling runtime errors such as SQLException, ClassNotFoundException, IOException, RemoteException, etc.  

5. What is serialization?  

Serialization refers to converting the state of an object into a byte stream. Serializing an object ensures the byte stream can be reverted easily into a copy of the object.