With Java programming in high demand, many companies are looking to hire Java developers. Therefore, recruiters and hiring managers need to work harder to find the best candidates with the required skills and experience for the role. To help minimize the challenges, we’ve crafted a Java hiring guide to jumpstart your efforts and show you the ropes.
Let’s dive into how to hire dedicated Java developers.
How to Hire a Java Developer: Considerations, Skills & Questions
Whether a company is large or small, hiring Java developers or a development team can be a challenge for recruiters and hiring managers. Finding software development talent that not only has the necessary technical requirements but also important soft skills like teamwork and communication can make it difficult to identify the right talent.
By pinpointing the right Java developer skills, considerations, and interview questions, companies can hire the best Java developers or Java development company for their business needs. This can could lead to long-term relationships or partnerships that will prove instrumental to a company’s success.
Before You Hire a Java Development Team
There are things to consider before you hire dedicated Java programmers. Always start by considering the type of software development team that is needed for your specific project because that will determine what you must look for in each team member. Find out if your prospective team member has the skills and experience you need by interviewing them.
In this hiring guide, we have outlined some common skills to look for in each Java developer and top interview questions that will help you find the right talent for your business needs. Let’s take a look.
Skills to Look for in a Java Developer
#1 Proficient in Java programming
It goes without saying that if you are looking to hire Java developers, they should be well-versed in Java programming. A proficient developer can build reliable and scalable applications with their knowledge of Java best practices, syntax, frameworks, and libraries. They can also accelerate the timeline of projects and improve productivity due to familiarity with the language and available tools. This proficiency should extend to the knowledge of debugging, testing, and understanding core programming concepts, which we will discuss in greater detail below.
#2 Sound understanding of core programming concepts
When searching for top Java developers to hire, one of the first skills to look for is core programming skills. This is important as it includes knowledge of object-oriented programming (OOP), data structures, and algorithms. Developers must know how to use data structure and algorithms to solve problems for their employer’s needs, and they should also know the differences between encapsulation, abstraction, polymorphism, and inheritance when programming.
#3 Strong problem-solving skills
One of the main goals of a Java programmer is to solve problems. It is important to find out if the candidate has strong analytical problem-solving skills to not only work toward meeting business goals but also address any issues that could arise. This includes being able to debug and troubleshoot code to resolve problems efficiently. This skill is also useful for identifying high-level solutions such as building software architecture, which we will look at more closely in the next point.
#4 Understanding of software design and architecture
A successful Java programmer should understand the ins and outs of software design and architecture. They should be familiar with using different technology stacks and selecting the appropriate architectures that would allow them to build maintainable and scalable systems. The lack of knowledge of software design can result in poor quality code, maintenance, and scaling challenges, along with the scary potential need for a software refactor in the near future. So, definitely ensure your candidate is knowledgeable about system design and architecture.
#5 Experience with web development and Java frameworks
Many Java developers are hired to develop backend server-side web applications. It is important to identify software engineers who have experience with the web development process and popular Java frameworks. You can determine if they have this knowledge by asking questions regarding HTTP, CSS, Javascript, JQuery, as well as web protocols that they should be familiar with. An understanding of design patterns, such as the Model-View-Controller (MVC) pattern, should also be considered when identifying potential candidates.
#6 Good teamwork and communication skills
Any hire must also be a good team player. When searching for potential candidates, it is important to make sure they are comfortable working in a team setting. Oftentimes, Java developers must work with other developers, project or product managers, UX designers, stakeholders, and others. This requires good communication to ensure everyone is on the same page toward company goals and objectives.
#7 SQL and database knowledge
Since Java is commonly used for developing web applications, knowledge of SQL and databases is important. It is rare to find an application that does not utilize data with the need for a database or cloud storage. Developers need to be familiar with database technologies such as Oracle or MySQL in order to integrate databases into their applications. It is also beneficial to be familiar with SQL queries. Seeking talent that already has this knowledge could be beneficial to your organization if you use databases or if it is on your business roadmap.
#8 Excited about continuous learning
Technology is always changing and evolving. Be sure to identify potential candidates who are passionate about learning and staying up-to-date on the latest advancements in their field and industry — from new programming languages to the most in-demand technical skills. This will benefit your organization because, as new technologies emerge, Java programmers will have the opportunity to propose time and cost-saving options to improve your current software architecture or technology stack.
#9 Experienced with Git version control system
Java developers should know how to use Git along with Git hosting services such as Github or Bitbucket. Familiarity with these tools is essential for your potential candidates because it will streamline hosting, sharing, and collaboration with the rest of the team over the course of Java projects. The Git repository will allow the developer to facilitate code management, versioning, and reviews, making it essential to understand how the system works and how to use it to achieve business goals.
#10 Proficient in Agile methodologies and DevOps principles
Most development teams use an Agile approach to streamline development workflows and communication among stakeholders. This workflow usually includes a cycle of conceptualizing, planning, developing, releasing, and maintaining work produced in sprints. When searching for a candidate, it is important to know if they are familiar with Agile and even more important to know if they understand developer operations (DevOps) principles. The term “DevOps” refers to deploying code continuously through the use of automated tools. An efficient Java developer should understand DevOps best practices to support their team’s continuous integration/continuous deployment (CI/CD).
Top Interview Questions for Hiring Java Developers
#1 Explain the concept of object-oriented programming (OOP) in Java, including encapsulation, inheritance, and polymorphism.
OOP in Java involves using classes, objects, inheritance, encapsulation, polymorphism, and other OOP principles to design and implement software. Encapsulation refers to bundling data and methods into a single unit, inheritance involves creating subclasses from a superclass, and polymorphism allows objects of different classes to be treated as objects of a common type.
#2 How do you approach designing a scalable and extensible Java application architecture?
Approach system design by first understanding the requirements of the system, including the data volume, workload, security, performance requirements, user needs, scalability needs, and more, depending on the system. Next, architect a system using modular and abstract design principles to design microservices, serverless, or cloud-native architecture that can be easily replaced or scaled without affecting the entire system.
#3 What is the difference between the GET and POST methods in HTTP, and how are they used in Java web development?
The difference between the methods is that GET methods do not modify the state of the server and are used to receive or “get” information from the server. POST methods, however, can modify the server state as information is being sent or “posted” to the server for processing or to perform actions based on the submitted data. They are used in web development to allow communication to and from the web server.
#4 What is a SQL injection attack and how can it be prevented in Java applications that interact with a database?
Structured Query Language (SQL) injection is a type of cyber attack where an attacker injects SQL code into a query executed by a database, allowing them to manipulate, modify, or access data in the database without proper authorization. It can be prevented by avoiding the use of dynamic SQL queries and instead using parameterized queries. Also, keep Java applications and libraries up-to-date to prevent security breaches.
Frequently Asked Questions
Are Java developers in demand?
Yes, Java developers are still in high demand with 9.4 million Java developers reported in the year 2021. Due to the demand, the numbers will continue to rise as the years progress.
How do you write a Java developer job description?
To write a good Java developer job description, highlight your compelling company description, the job description, requirements, and preferred skills, along with a list of company benefits if applicable.
How does BairesDev vet a developer’s Java skills?
BairesDev vets Java developers by assigning candidates online exams aligned with their skill sets, along with mandatory English exams. Once a candidate passes the exams, they undergo a series of HR and technical interviews to evaluate the candidate’s experience, communication, commitment, and whether they will be a good fit for BairesDev and their clients.
How much do qualified Java developers make?
Qualified Java developers earn an average annual salary of $100,000 in the US, versus in South America, where the average salary is about $20,000 USD.
What kinds of Java programmers are available for hire through BairesDev?
BairesDev offers a wide range of Java programmers who can cover all your software needs, from building powerful mobile and web apps to implementing full-fledged enterprise software solutions.
What should I look for in a Java developer?
Look for strong Java skills, experience with relevant frameworks, problem-solving skills, knowledge of databases and web services, good communication, teamwork, and relevant experience.
Why is BairesDev the best choice for hiring Java experts?
BairesDev is the best choice for hiring Java experts due to its extensive experience, top-notch talent pool, commitment to quality, and flexible hiring options.
