Java Developers Hiring Guide

A programming language with a write-once run-anywhere philosophy

Java has been around for some time. Created in 1995, one might think Java is an outdated language with little to no relevance today. That couldn’t be farther from the truth. Java is still one of the most popular programming languages on the planet. Why? In a word, Android. 

Java is the default language for developing for the Android platform. And given that Android is the most widely-used mobile operating system in the world, it’s no wonder Java has enjoyed such a dramatic resurgence in popularity.

Android isn’t the only one use for Java. A Java developer can create:

  • Application servers
  • Web applications
  • Unit test
  • Desktop applications
  • Enterprise applications

Without a doubt, Java is a programming language your company is going to want to use.

Java Developers Hiring Guide 1
  • Java Developers Hiring Guide 2

    Hiring Guide

  • Java Developers Hiring Guide 3

    Interview Questions

  • Java Developers Hiring Guide 4

    Job Description

Initial work on Java began in June 1991, by James Gosling at Sun Microsystems. The language was released as a core component of Sun Microsystems' Java platform, which included a reference implementation of Java compilers, virtual machines, and class libraries. The initial public release of Java 1.0 was in 1996.

Originally designed for interactive television, it quickly became apparent the language was too advanced for the television industry at the time. Java was the first language to promise "Write once, Run Anywhere (WORA), which made it possible to create an application that could run on any platform.

Java began as a secure platform with configurable security and even allowed network and file-access restrictions. Shortly after its release, web browsers added the ability to run tiny Java applets within web pages. This was a boon to web developers everywhere and made it possible for websites to include more modern and unique features.

Since its humble, web-centric beginnings, Java was adopted by Google as the default language for Android (both the operating system and apps).

Java is also capable of working within the cloud, for application services, web APIs, and client applications. Over the years, this language has proved itself flexible enough to fill nearly any void.

How difficult is it to find good Java developers?

Because of its popularity, finding a good Java developer is quite easy. Given how prevalent Android is around the world, you shouldn't have any problem hiring a team of developers perfectly capable of handling any task thrown their way. Java is an essential language for most software engineers.

But when hiring a Java developer, it's important to not only test candidates for their proficiency in the language, but a strong knowledge of the ecosystem. The best Java engineers will have a strong understanding of Object-Oriented Programming, data types, threads, Servlets, and class loading mechanisms.

One very important aspect to consider when hiring a Java developer is that candidates must be proficient in numerous releases of the language. As there are still apps being developed with both older and new versions of the language, candidates should be capable of working with Java 5 up to Java 11. 

Fortunately, Java is fairly easy to learn and maintain (it being as near Lingua Franca as a language can be). And because Java is so widely used, it’s employed around the world. This means you can hire onshore, nearshore, or offshore developers, and trust they have the necessary competencies to use the language.

How to choose a Java developer for your project

To choose the right Java developer for your project, you first must know which version of Java is required and then make sure the candidates are proficient in that version (as well as any version newer than that release). Those candidates should also be proficient in:

  • J2EE
  • Object-Oriented Analysis and design
  • XML, X query, and XSL
  • Data structures and algorithms
  • Java-based web services
  • Relational databases, such as SQL and ORM

Beyond those skills, you also want to ensure potential developers can easily function within a team and understand how they fit into the system. Those developers must be able to learn fast and pivot quickly, otherwise, your project could wind up stalling out should you require changes.

A quick general checklist for these developers should also include:

  • UI design
  • UX development
  • Teamwork
  • Debugging 
  • Communication with clients and teammates
  • Openness to alternative solutions for problems
  • Creativity
  • Proactivity, but willingness to take directions from other teammates
  • Understanding of how to work with libraries and frameworks
  • Full-stack development.


Hiring a solid candidate for your Java project shouldn't be a problem. Since Java is so common, you'll find quality developers everywhere and at every level. Because of this, it's important to pay close attention to the other tangibles to ensure the developers you hire are a good fit for your team.

What is Java and what makes it still relevant today?

Java is a high-level language that is most commonly used for web services, web applications, and Android development. Because it’s possible to build scalable, secure software with it, Java will continue to be one of the most widely used developer languages for the near future.

What is the difference between Java and JavaScript?

The major difference between Java and JavaScript is that Java is an OOP programming language, capable of building applications that run within a virtual machine, while JavaScript is an OOP scripting language that is run within a web browser.

What are the most important features of Java for mobile development?

  • Java is easy to learn and master.
  • Java has been developed as the platform-independent.
  • Java is a flexible, object-oriented language.
  • Java includes solid security for every supported programming and running environment.
  • Java includes several tools and IDEs.
  • It’s multi-threaded and interactive.
  • It's a very performant, dynamic, and extensible language.

Why is Java not a pure Object-Oriented language?

Java is not a purely Object-Oriented Language because it supports primitive data types like it, byte, and long which are not objects. 

What does data encapsulation mean?

Data encapsulation is the mechanism that obfuscates the details of a class from the user.

We are looking for a Java Developer responsible for creating exciting web and mobile applications, as well as integrating the necessary backend elements created by teammates into the application. 

We are looking for highly skilled, enthusiastic engineers with experience building mobile and web applications in Java. Java Developers will be responsible for analyzing user and company requirements to successfully meet objectives, determine application features, and functionality, and recommending changes to existing company Java-based applications.


  • Design and implement Java-based web and mobile applications.
  • Analyze user requirements to help inform application design.
  • Define application objectives and functionality.
  • Align application design with business goals and customer needs.
  • Develop, test, and debug software.
  • Producing detailed documentation.
  • Recommending changes to existing Java applications and infrastructure.
  • Ensuring continuous professional self-development.

Skills And Qualifications

  • Degree in Computer Science or related field.
  • Experience with Java, UX, database structures, and statistical analyses.
  • Solid problem-solving skills.
  • Excellent written and verbal communication.
  • Good organizational skills.
  • Ability to work as part of a team.
  • Attention to detail.

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