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$200
Fixed-price
Intermediate
Experience level
We are seeking a talented iOS SDK developer to build AI chatbot SDKs that can be distributed to mobile applications. The ideal candidat…
$75
Fixed-price
Intermediate
Experience level
writing with excitement and a bit of nervousness as I'm on the brink of publishing my own app. It's been a labor of love, and now I'm…
$110
Fixed-price
Intermediate
Experience level
We are looking for a talented developer who has an active Google Play account. As a Google Play Developer, you will be responsible for…
30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level
We are looking for a Candidate having more than 5 year of experience in below technologies Skills: Java, groovy, Linux/ shell scriptin…
$250
Fixed-price
Intermediate
Experience level
I am looking for a tutor who can help me learn Katalon Studio using Java. The main goal of the tutoring sessions is to gain proficiency…
$1,500
Fixed-price
Intermediate
Experience level
I want a webscraping system that monitors 1x2 odds in real time for the best football leagues, comparing these odds between 14 differen…
not_sure
Hours needed
Less than 1 month
Duration
Intermediate
Experience level
I need someone that can help me to upload my app to console Or if he can give me a access to publish my app to console My budget i…
not_sure
Hours needed
1 to 3 months
Duration
Intermediate
Experience level
We are looking for a specialist in Oracle Micros Simphony database to build report with SQL query and configurate the export scheduler.…
$100
Fixed-price
Intermediate
Experience level
Hello, How are you? I hope this message finds you well. I'm currently in the process of developing an app that I'm excited to share wit…
$75
Fixed-price
Intermediate
Experience level
I am writing with excitement and a bit of nervousness as I'm on the brink of publishing my own app. It's been a labor of love, and now…
can earn $20–$40/hr.
$20 $40
Median hourly rates (USD)
How to Become a Freelance Java Developer
Java is considered one of the best programming languages for enterprise software. What’s more,Java is one of the native programming languages supported by Android, so many mobile app developers use Java.
What does a Java developer do?
Java developers are responsible for architecting, designing, and developing software using Java, and many popular software libraries and frameworks are written in Java, such as Spring and Hibernate.
Java programmers and developers typically work as part of a team to design and develop software solutions for client requests. Java is famous as an embedded systems programming language, so many devices are powered using software written in Java.
Some other roles and responsibilities include:
- Designing, implementing, and maintaining Java applications
- Delivering applications with high availability and performance
- Ensuring designs comply with specifications
What skills do I need to become a Java developer?
To become a Java developer, experience is more important than a college degree, but a bachelor’s degree in computer science, software engineering, and another related field is often recommended.
Java developers must understand programming concepts such as object-oriented design and common frameworks and software libraries written in Java. Java developers will also be familiar with typical programming tools such as IDEs and version control software.
Common skills a Java developer should possess include:
- In-depth knowledge of OO design and programming
- Excellent analytical, problem-solving, and troubleshooting skills
- Knowledge of relational databases (Oracle, SQL Server, DB2)
- Experience with back-end application programming interfaces (APIs)
What are the job responsibilities of a Java developer?
A Java developer will build and maintain software applications to develop web apps, mobile apps, embedded system apps, server-side software, and more.
Typically, a Java developer will work as part of a team, using IDEs to write code and version control software to commit code as part of a team effort. A Java developer will be expected to:
- Plan, design, and code software solutions for new and existing projects
- Write efficient and reusable code
- Develop software using industry best practices
- Work with software engineers, product managers, software developers, web developers, and clients to ensure the software is designed well and meets user needs
Eager to learn more about Java development on Upwork? Check out these additional resources:
Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this section. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyse and determine the tools or services that would best fit their specific needs and situation.
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