Amit
The Demand for Java Developers Continues to Skyrocket
What do Netflix, Google, Amazon, Twitter, Airbnb, and other popular brands have in common? They're among numerous high-traffic sites depending on Java developers in essential contexts. That's why Java is maintaining its status as one of the top programming languages and frameworks after three decades, as it will be utilized by 30.55% of developers worldwide in 2023.
The Java CMS software market is expected to reach US $ 2,818.5 Million by 2027. With over 69% of full-time developers globally using it and 51 billion active Java Virtual Machines (JVMs) deployed worldwide, Java enjoys widespread popularity.
Java's versatility is a double-edged sword. With so many specializations under the umbrella of Java development, hiring the right professional is a challenging task. Your project type will determine the unique hiring process and skill requirements that will match you with a suitable Java expert.
This guide will help you find the right Java developers that fit your project—whether you are building a web, mobile, cloud, or microservices app.
What is the Java Developer Job Description for your Project?
As you must identify the standout candidate for your project, your customized Java developer job description must also stand out from the job list. Make sure you hire Java experts with accurate and required responsibilities and skills.
The Project
- List the main goals of your project and how you plan to achieve them.
- Detail any known current and future development constraints.
Responsibilities
- Translate application storyboards and use cases into functional applications
- Create and maintain efficient, reusable, and reliable Java code
- Deliver high performance, and responsive applications
- Identify bottlenecks and bugs and devise solutions to these problems
- Help maintain code quality, organization, and automatization
Skills
- Proficient in Java, with a good knowledge of its ecosystems
- Solid understanding of object-oriented programming
- Familiar with various design and architectural patterns
- Skill for writing reusable Java libraries
- Knowledge of concurrency patterns in Java
- Understanding of MVC, JDBC, and RESTful concepts.
- Familiarity with Java GUI frameworks like Swing, SWT, and AWT
- Knowledge of writing clean, readable Java code
- Experience with both external and embedded databases
- Understanding fundamental design principles behind a scalable application
- Basic understanding of the class loading mechanism in Java
- Basic understanding of JVM, its limitations, weaknesses, and workarounds
- Implementing automated testing platforms and unit tests
- Deep knowledge of code versioning tools, such as Git
- Understanding of build tools such as Ant, Maven, and Gradle
- Familiarity with continuous integration
What are the Different Types of Java Developers?
Understanding varieties of Java developers based on experience level is important when hiring one for your project. The spectrum ranges from Junior Java Developer to Senior Java Developer, each bearing distinctive skills and knowledge sets.
Junior Java Developer
A beginner in the professional programming world, a Junior Java Developer has just entered the practical sphere after garnering their academic or vocational training. They are usually guided by senior developers and initially work on minor parts of software applications.
- Can write simple code
- Familiar with version control systems like Git
- Basic understanding of SQL language and databases
- Able to conduct unit testing
Even though junior Java developers may lack experience, they can provide fresh perspectives because their Knowledge is current.
Middle (Mid-level) Java developer
Middle-level Java developers who have graduated from beginners to intermediates in coding possess several years of professional experience. As a result, they are entrusted with greater responsibilities such as:
- Designing, developing, and managing robust and secure coded solutions.
- Assisting in technical decisions related to new tools and techniques.
- Guiding junior developers and ushering them through complex coding challenges.
- Optimizing performance for specific processes or programs.
Senior Java Developer
The apex point in every programmer's career is when they step into the shoes of a Senior level JAVA developer who performs tasks like:
- Leading teams strategically through complex projects.
- Developing high-level system designs & architecture 3.Prototyping new ideas effectively.
- Optimizing system performance while ensuring maximal security.
- Senior Java developers serve as mentors for less experienced teammates apart from using their expertise to hone multifaceted skillsets in design, development, and review code, along with project management duties.
The Most Popular Java Frameworks for Web Development
Spring
It's an open-source framework for Java web development services. Spring is one of the most popular Java Enterprise Edition (JEE) programmers use to develop high-performing applications.
Best Features of Spring:
- Admin Features
- Type-Safe Configuration
- Externalized Configuration
Google Web Toolkit
Like Spring, GWT has become one of the most popular Java frameworks for software developers. It comes with a popular open-source community.
Best Features of GWT:
- Lightweight and easy to integrate
- Simple RPC Mechanism
- Unit Testing Integration
- Dynamic UI Components
- Browser History Management
- Support for Localization and Internationalization
Hibernate
Hibernate is one of the most popular Java frameworks that simplifies Java app development to interact with the database.
Best Features of Hibernate:
- Object Relational Mapping (ORM)
- Caching
- High-Performance
- Hibernate Query Language (HQL)
- Auto-Generation
Struts
This Java web development framework is based on several technologies such as JSP, JSTL, & XML. It implements MVC architecture, such as the Java MVC framework and validation framework.
Best Features of Struts:
- POJO Based Actions
- Integration and Various Tag Supports
- Configurable MVC Elements
- AJAX Support
JSF (Java Server Faces)
JSF is an open-source, popular framework that allows rich user interfaces to be built using Java. This Java web UI framework provides elements to design user interfaces. Java Server Faces work with Java Servlet API and JavaServer Pages (JSP) technologies.
Best Features of HSF:
- Automatic State Management
- Reliable and Stable Java Framework
- Component-Based Architecture
- Follow MVC Software design
Questions to Ask to Hire the Right Developers for Your Java Projects
Ten questions you can ask from Java developers before hiring them for your project.
- What is a ClassLoader in Java?
- What is the main difference between Heap memory and Stack memory in Java?
- What exactly are the distinctions between JDK, JRE, and JVM?
- What is a JIT (Just-In-Time) Compiler in Java?
- What Is JSON and What Is It Used For?
- What are Benefits of Working in an Agile Team Environment
- Do You Use Github or Another VCS Tool?
- Give an Example of a Poorly Designed Java App You've Seen Developed, and Let us Know How to Make it Perfect.
- How to Connect a Java Application To a Database?
- Do you know about JDBC (Java Database Connectivity), JSP (Java Server Pages), and its directives?
Why Should You Hire a Java Spring Boot Developer?
If you plan to hire a Java Spring Boot Developer, you must understand why this technology is in high demand.
- Java Spring Boot supports type conversion, resource management, and data binding. In addition, it integrates with several Java EE technologies, such as RMI & Java web services.
- Hire Java Spring Boot developers for high-quality, unique app development solutions quickly.
- For programmers, automatic configuration depends on the class system, which adds convenience.
- The foundational concept of a POM in Java Spring Boot involves managing JAR-based dependencies through an XML file adhering to Java Spring Boot specifications.
Qualities of the Top 3% of Java Spring Boot Developers
Here are six qualities you need to consider when hiring the top 3% of Java Spring Boot Developer:
In-depth Knowledge of Java
Ensure your Java Spring Boot developer has Deep Knowledge of the Java ecosystem and APIs before hiring them. PostgreSQL and MySQL have recently been two SQL-based relational databases, and non-relational databases like MongoDB and Cassandra have been gaining popularity.
Skills of DevOps tools
Knowledge of DevOps tools is important when hiring the best Java developers to work on Spring Boot technology. DevOps tools like Jenkins are an automation server that supports Java app development, testing, and deployment.
In addition, Java Spring Boot Programmers must have experience working in a containerized environment.
Profound Knowledge of unit testing
A dedicated Java developer who can build Spring Boot desktop apps must have experience in unit testing. Unit testing knowledge is essential as it's the only way to ensure error-free codes for desktop and web applications.
Experience in microservices
Microservices are essential for Java Spring boot development as they build small, flexible, ready-to-use applications. It is run at scale by different multipurpose features in Spring Boot. So, Make sure you hire the best Spring boot developer with experience in microservices.
Familiarity with cloud-based infrastructure
Undoubtedly, cloud-based applications like AWS are gaining more popularity in today's data-driven market. Hire a professional developer familiar with this infrastructure to keep up with this latest trend.
Expertise in multiple Spring Boot Frameworks
CLI, project support, Starters, JDBC, and ORM are critical features of Spring Boot. Programmers must have Knowledge of Java and Spring Boot for API development. It's built on many spring boot frameworks, such as Spring Data, Spring Batch, Spring-security, Spring Integration, and Spring Social.
These frameworks lower costs, increase development speed and improve quality and efficiency thanks to plugins. Hire a Java Spring Boot developer with expertise in all these frameworks to take your project to the next level height.
Why should you hire Full-Stack Java Developers?
Skills of Full-Stack Java Developers: why should you hire java developers in United States for your project:
Front-End Languages & Frameworks
The most popular front-end languages are among Java Full-Stack Developer:
1.1. HTML
HTML is a primary language for front-end development. Programmers use HTML to build simple and attractive content (text and images) for applications.
1.2. CSS
CSS takes all the data from HTML and adds visual enhancements and stylish aspects. It controls web page aspects, such as font, size, color, and spacing. Java developers use this language to create more appealing apps.
1.3. JavaScript
JavaScript (JS) integrates other functionalities into the site or app. This powerful language can improve user interactions with software. Hire Java Full-Stack developers with expertise in JavaScript libraries such as ReactJS, Vue, JQuery, and Angular.
2. Back-End Languages And Frameworks
Apart from Front-end, Java Full-Stack developers must have Knowledge of Back-end Java development frameworks and technologies:
2.1. JavaScript
JavaScript is used in client-side and server-side development. In addition, Java Full-Stack programmers must have Knowledge of Node.js and Express.js for all back-end programming requirements.
2.2. Java
Java supports the server side. That's why you need to hire a Java developer with a good mastery of this development language. In addition, make sure they are comfortable using the Spring framework.
2.3. C#
C# is one of the most potent and well-rounded languages available today. Java developers use this language to build Windows architecture.
2.4. Other Languages
Hire Java Full-Stack developers with expertise in Python, Django, and Flask frameworks to handle all aspects of back-end development. In addition, they must have experience in other languages such as JSP, PHP, Ruby, and Perl.
3. DMS (Database Management Systems)
Data management systems store, retrieve and run queries on data. These software systems provide an interface between the user and the database.
If you need a dedicated Java Full-Stack developer for hire, ensure they have profound Knowledge of data management systems.
Popular DMS are MySQL, SQL, PostgreSQL, MongoDB, and Oracle. In addition, developers know how to interact with databases through frameworks like Hibernate.
4. Web Hosting And Version Control
Web hosting platforms help you deploy your app or software to the CSP (Cloud Service Provider) using browsers or internet protocols. So, hire Java Full-Stack developers with expertise in popular web hosting platforms such as AWS, Google Cloud Platform, and Microsoft Azure.
In addition, Full-Stack Java developers must have experience using Servlets APIs and Version Control systems.
Wrap Up!
This guide is designed to help you find and hire Java developers per your project requirements. They will help you to achieve faster time-to-market for new applications or software. It provides the ultimate competitive advantage and saves your company time and money on any project.
Skills to Consider When Hire Java Developers for Asynchronous eLearning Systems
Moodle, Coursera or Canvas: The market has the most popular Asynchronous eLearning systems. Asynchronous is part of the eLearning system. It's also known as self-paced eLearning systems and flexible learning systems. The global Online Self-Paced Learning market is predicted to reach US$ 14.1 billion by 2030, with a CAGR of more than 7.2%.
If you are planning to hire Java developers for Asynchronous eLearning Systems, here are specific skills you need to look for:
Concurrency and Multithreading: Asynchronous or self-paced eLearning systems often handle several tasks separately. Java offers several features like threads, executors and synchronous programming languages to support multithreading and concurrency.
Networking: Many eLearning software runs over networks. So, ensure you hire developers who are familiar with networking concepts and Java's networking APIs. It will help to implement communication between clients and servers, handling data transfer and managing connections.
Event-driven Programming: Self-paced learning systems often depend on event-driven architectures, where events trigger actions. Ensure your hire Java developers know event handling mechanisms, such as listeners and callbacks, to design responsive and interactive e-learning software.
Asynchronous Programming: Knowledgeable programming language is essential to build a system that can handle concurrent tasks efficiently. If you want responsive and scalable eLearning platforms, hire Java developers who understand asynchronous programming models, including callbacks, futures, and Completable Future.
Databases and Data Persistence: E-learning systems typically store and retrieve data from databases. Java developers must have database management skills using frameworks like JDBC or ORM (Object-Relational Mapping) libraries such as Hibernate.
Performance Optimization: Asynchronous systems require performance optimization to handle concurrent tasks effectively. Hire Java developers with expertise in optimizing code and finding bottlenecks. In addition, they have expertise in utilizing techniques, including caching, loading and resource pooling, to enhance software performance.
Specific Skills to Hire Java Developers for Building Digital Wallets
PayPal, Apple Pay, Google Pay & Stripe are the most popular digital wallets built using Java. So, if you are planning to hire Java developers for digital wallet or mobile wallet, here are specific skills you need to look for:
Java: Hire Java developers who have strong proficiency in Java programming language and its frameworks for digital wallets.
Mobile Development: If you want to build a mobile wallet, hiring Java developers who are familiar with mobile development frameworks such as Android SDK is essential.
Security: When it comes to eWallets, security plays a vital role. So, ensure your developer understands security practices such as encryption, secure authentication approach and secure data storage. It's essential to protect users' confidential financial data from breaches.
Payment Gateway Integration: Look for developers with experience integrating payment gateways and APIs such as PayPal, Stripe, or Braintree. It helps in securely processing transactions.
Blockchain Technology: If your digital wallet includes cryptocurrency transactions or blockchain-based authentication features, hire Java developers with a profound knowledge of blockchain technology and cryptocurrencies.
RESTful APIs: Developers must be proficient in designing and integrating RESTful APIs to exchange information securely between different elements of digital wallets.
Database Management: To hire Java developers, consider skills in database management systems like MySQL, PostgreSQL, or MongoDB to store users' transaction data securely.
Continuous Integration/Continuous Deployment (CI/CD): Experts must be familiar with CI/CD pipelines and tools like Jenkins or GitLab CI. CI/CD tools help developers automate the build, testing, and deployment processes, ensuring rapid and reliable delivery of digital wallet updates.
Payment Card Industry Data Security Standard (PCI DSS) Compliance: When handling payment card data securely, PCI DSS compliance plays a vital role. Ensure your hired Java developers know PCI DSS requirements and best practices to ensure compliance with industry standards.