Find the Best Java Development Jobs
Check out a sample of the 1,061 Java Development jobs posted on Upwork
AI Workflow Automation Specialist
Fixed-price
Experience level
We are seeking an AI Workflow Automation Specialist to enhance our operations by integrating AI tools. The role involves identifying ar…
Software Engineer Needed
Fixed-price
Experience level
We are looking for a reliable Software Engineer with experience in Python, JavaScript, C#, .NET, Node.js, React, or similar technologie…
Full Stack Developer – Java/Spring Boot + React
Hours needed
Duration
Experience level
We are looking for a strong Full Stack Developer to help build and improve a client/server web application with a heavy focus on respon…
Skool Course Builder for 10-Week Program
Hours needed
Duration
Experience level
We're looking for an experienced Skool course builder to help us build a premium 10-week business growth program inside Skool. The con…
Senior AI Software Engineer for Generative AI
Hours needed
Duration
Experience level
We are seeking a Senior AI Software Engineer to lead the development of our Generative AI and LLM project. The role involves designing…
Mobile App Developer (React Native)
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
We are looking for a skilled React Native Mobile App Developer to join our team on a project basis, with the potential for long-term co…
PIF app
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
I'd like to build a social media app for pay it forward campaigns
Senior .NET Software Engineer
Hours needed
Duration
Experience level
We are seeking an experienced Senior .NET Software Engineer to build and maintain web applications and APIs. Responsibilities include d…
Java Game Clicker Improvement
Hours needed
Duration
Experience level
We are seeking a skilled freelancer to enhance our Java game clicker. The project involves improving the clicker's speed and ensuring i…
Full Stack Developer with TBO API integration
Hours needed
Duration
Experience level
1. Integrate TBO hotel APIs: search, pre-book, book, cancel, and booking retrieval 2. Handle authentication, rate verification, markup/…
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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