Find the Best Java Development Jobs
Check out a sample of the 992 Java Development jobs posted on Upwork
API Technical Writer
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We're looking for a API Technical Writer to create and maintain developer-facing documentation for our API products in a healthcare/Saa…
Anonymous Multi-Domain Hosting Setup for Landing Pages (Infrastructure Only)
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
READ CAREFULLY! Project Overview: I already have my landing pages built. I do not need design or page development. I need someone to b…
Full Stack Cross-Platform App Developer
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
Seeking a skilled developer to enhance a full stack cross-platform athlete mental performance training app. The project involves both f…
CARLA Simulator Developer – Driving Training & Research Platform
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
We need a developer to build a full-featured simulator on the CARLA open-source platform for practical driving training and human-facto…
Courseware Developer – Lab-Heavy Java
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are hiring a technical courseware developer to design and build two 5-day, lab-heavy enterprise Java courses: Course 1 (Java SOAP/RE…
QuickBooks API, full stack developer
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Need a developer that is well-versed with QuickBooks API. Need to develop a program for internal use. Need a frontend and backend deve…
Program Crest/Emblem Finalization
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
I am seeking a skilled designer to finalize a program crest/emblem. The task involves refining an existing design to ensure it meets th…
Deploy Web App Securely
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We need an experienced developer to deploy a web app so our team can log in via a secure URL. The ideal candidate will have a strong ba…
Senior Backend Software Engineer (Remote - USA)
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Remote - USA !! Applicants must be authorized to work in the United States. We are unable to consider candidates who require visa spon…
ServiceTitan Expert for Full Implementation, Configuration & Ongoing Management
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
We are seeking a ServiceTitan expert to lead the full implementation, configuration, and ongoing management of our system. The ideal ca…
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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