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Jude

Jude

Java Developer

Experience20 years
AvailabilityFull-time

Jude is a full-stack developer having 20 years of experience in delivering end-to-end solutions for different companies. He is proficient in Java, React, C#, Python, and Go.

Expert in
  • Java
  • C#
  • SQL
  • React.js
  • Python
Also worked with
  • Finance
  • JavaScript
  • Scala
  • Machine Learning
Rafael

Rafael

Java Developer

Experience6 years
AvailabilityFull-time

Rafael is a senior software engineer having 6+ years of experience. He is highly proficient in CI/CD Java, React.js, Spring, and JavaScript.

Expert in
  • Java
  • CI/CD
  • Agile
  • OOP
  • Java 8
Also worked with
  • JUnit
  • Mockito
  • Unit Testing
  • Maven
Harmen

Harmen

Java Developer

Experience9 years
AvailabilityFull-time

Harmen has 9+ years of experience in software development. He is focused on developing high-performing web, mobile, and server applications.

Expert in
  • Java
  • C#
  • MongoDB
  • React.js
  • Python
Also worked with
  • JavaScript
  • Kubernetes
  • Bash
  • DevOps
Fred

Fred

Java Developer

Experience12 years
AvailabilityFull-time

Fred is a design-first full-stack software engineer with hands-on knowledge and 12+ years of experience in creating fluid and interactive web applications.

Expert in
  • Java
  • CSS
  • SQL
  • React.js
  • HTML
Also worked with
  • JavaScript
  • Typescript
  • Bootstrap
  • Spring Framework
Mahabir

Mahabir

Java Developer

Experience10 years
AvailabilityFull-time

Mahabir is a software engineer having 10+ years of experience working in the domain of healthcare, automotive, construction, and related fields.

Expert in
  • Java
  • C
  • SOAP
  • Jenkins
  • Python
Also worked with
  • Android
  • DevOps
  • Docker
  • JSON
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How to hire the best core Java developer?

Worried about the hassles of hiring a core Java developer? Check this guide to know about skills to look for, interview questions, and more!

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How to hire the best core Java developer?
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How to hire Core Java developers? Skills to look for, interview questions, and more

In today's digital world, the demand for skilled Java developers is growing because these developers can build a wide range of software solutions - from mobile apps to highly complex enterprise applications. However, the limited talent pool makes it challenging to find a talented core Java developer who meets your project requirements. If you are looking to hire a Core Java developer, you should know the skills and experience they should have. So, we have put together an excellent resource for recruiters coming from a non-technical background and looking to hire a core Java programmer.

Skills to look for in a Core Java developer

At a high level, hire Core Java developers who have the following skills in their arsenal:

1. Proficiency in Core Java

When you hire Core Java coders, knowledge of Core Java should be the first skill that you should check. It also works as a base and gives developers a significant advantage when learning all of the other related tools built on top of Java. Some of the advantages of Core Java include consistent innovation and convenience, Rich APIs, open-source libraries, reliable development tools, and huge community support. Hence, you should hire Core Java developers who can effectively take advantage of the languages’ capabilities.

2. High-level proficiency in OOP concepts

Java is an object-oriented language, so your ideal Core Java candidate should have a deep understanding of Java OOP concepts. The OOP approach introduces the class and object style of coding and without these concepts, it is difficult to write any Java program. Classes and objects are used to bind the data and the functions together to improve code stability and safety. Therefore, you should hire the best Core Java programmers who have clear and complete knowledge of OOP concepts.

3. Through understanding of abstract classes and serialization

Concepts such as classes, data members, methods, objects, etc. are essential for any skilled Java programmer. Subsets of classes, abstract and serialization, are also necessary skills that you should be mindful of when hiring Core Java developers. Abstraction is an OOP concept that shows only relevant details of the object and in turn, reduces the code complexity. On the other hand, serialization is the conversion of objects into a byte stream for transporting the Java objects from one Java system to the other.

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4. Knowledge of DevOps tools

DevOps processes like continuous integration and deployment play a vital role in efficient software development. It considerably reduces waiting time between development, integration, testing, and deployment. That’s why you should hire Core Java developers who have a proven track record of working with DevOps tools such as Kubernetes, Maven, Chef, Docker, and Jenkins.

5. Strong competency with unit testing

The more your application grows, the more daunting the testing task becomes. That’s why developers should utilize unit testing tools like JUnit and TestNg to speed up the writing of automated tests. These tools offer immediate feedback that significantly improves the productivity and stability of the codebase. You should hire Core Java developers who can leverage the capabilities of such tools and considerably lower the time spent on debugging.

6. Familiarity with software design and architecture

Software design and architecture play a major role in software development processes. It provides an abstract roadmap of the system which can be used to communicate with system stakeholders. These designs govern the functionality and aestheticism of your project. Therefore, hire Core Java developers who are quick to identify and implement the right technology stack and architecture for applications.

Create a hiring funnel

Creating a hiring funnel will provide you with numerous benefits, like assisting you in identifying the top skills to hire Core Java developers who will fit into your company's culture.

What Turing does for you

Candidates screening
Candidates screening

We will help you select the best talents and spot a Core Java developer who will fit in your company culturally.

Test task
Test task

We verify if the candidate really wants to work at your company and is able to spend 5+ hours to prove it by rigorous tests. It helps us to see a developer's caliber.

Technical test
Technical test

Developers are asked skill-related questions and made to solve tricky problems. We use open questions. The goal is not only to test developers’ knowledge – we also want to find out their way of thinking.

Giving specific feedback
Giving specific feedback

We provide explicit feedback on both the test task and the technical test after we have checked the developer's expertise.

What you do

Interview
Interview

You can interview the shortlisted developers to check if the candidate matches your requirements and is a good fit for your company.

Hired/Not-hired
Hired/Not-hired

Hire intelligently with developers sourced by software, vetted by software, matched by software & managed by software.

Top interview questions to hire Core Java developers

Hiring for a new skill can be a daunting task even if you’ve been a part of the recruitment process for quite some time. But it is also critical to the success of your project that you hire Core Java programmers who are the right fit for your team. So, if you’re looking for questions that you can ask to test the applicants, here’s a list that you can refer to.

When hiring Core Java developers, this is a great question to start the interview. The candidate’s answer may look like this: Core Java primarily focuses on the development of general-purpose applications. On the other hand, Advance Java deals with the development of online applications like websites and mobile applications.

Some of the advantages of Java include, easy to learn and write, object-oriented, portable, platform-independent, secure, robust, interpreted, high-performant, multithreaded, distributed, and dynamic functionality.

If you want to test a candidate’s knowledge of the Java environment, you should ask this question. The candidate may answer that JVM or Java Virtual Machine is like a run-time environment for executing bytecode. JDK or Java Development Kit is a software development environment used to build applications and applets. Lastly, JRE or Java Runtime Environment is a software bundle that allows Java programs to run.

JIT or Just-In-Time compiler is used to compile Java bytecode into native machine code at run time. It significantly improves the performance by reducing the workload on CPU and memory.

It is used to load class files and is a subsystem of JVM. When the Java program is executed, it is first loaded by ClassLoader. Three built-in ClassLoaders are -

  • Bootstrap ClassLoader
  • Extension ClassLoader
  • System/Application ClassLoader

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Here are some more interview questions that you can ask to assess a developer’s caliber.

  • Explain the various access specifiers in Java.
  • What are the advantages of packages in Java?
  • What are objects and classes?
  • Explain constructors and their types in Java.
  • List out the difference between constructors and methods.

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Frequently Asked Questions

Core Java is the primary language for Android development and you can find it in government websites, big data technologies, and web applications. It is also a go-to option for scientific projects. If you are looking to hire a proficient Core Java developer, reach out to Turing to make the hiring process easy.

If you wish to hire the best Core Java developers who are willing to work in your timezone, try the Turing jobs platform. Turing goes deep into the global talent pool to source Core Java developers from across the world and vets them to a high standard. Companies can hire remote Core Java developers within 4 days with Turing.

Turing’s automated seniority assessment test, algorithm coding interview, and automated vetting flow help companies hire remote engineers in a matter of days. Turing’s AI-powered deep-vetting talent platform matches most companies with developers within 4 days.

Turing has created an AI-powered deep-vetting talent platform to vet remote developers to a very high standard. Turing tests developers based on actual skills vs. self-reported experience from traditional resumes or job interviews. Every developer at Turing has to clear our tests for programming languages, data structures, algorithms, system designs, software specialization, frameworks, and more. Each Turing developer goes through our automated seniority assessment test comprising 57 calibrated questions in 5 areas — project impact, engineering excellence, communication, people, and direction.

With Turing, you can hire the best remote developers for 100+ skills such as React, Node, Python, Angular, Swift, React Native, Android, Java, Rails, Golang, PHP, Vue, DevOps, Machine Learning, etc. Turing also offers developers based on tech stack and seniority.

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