Find the Best Java Development Jobs
Check out a sample of the 965 Java Development jobs posted on Upwork
Senior Software Developer (US Remote)
Hourly ‐ Posted 3 days agoHours needed
Duration
Experience level
Job Description We are looking for experienced Software Developers located in the United States to join our growing remote engineering…
Senior Software Engineer
Hourly ‐ Posted 3 days agoHours needed
Duration
Experience level
You'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform throug…
Contract AOSP / Android Platform Engineer — Cloud Android Infrastructure
Hourly ‐ Posted 3 days agoHours needed
Duration
Experience level
What this is: We run native ARM64 Android 15 (redroid) in containers on cloud ARM servers. A headless Android virtualization platform f…
Deploy PHP/SQLite website + publish to Google Play as TWA (complete codebase provided, not a build)
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
We have a complete, working codebase for a lottery results information website (PHP 8 + SQLite, no framework, ~600 lines). I need an ex…
GoHighLevel Integration Expert
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
We are seeking a skilled freelancer to integrate GoHighLevel with our existing systems. The ideal candidate will have experience with C…
Adding AI features to IOS App
Fixed-price ‐ Posted 3 days agoFixed-price
Experience level
Hello there, I have a new app that listed on App Store recently. I am looking for an AI expert to check & see what features can be ad…
[$250] Android - Wallet - KYC error not displayed #96426 - Expensify
Fixed-price ‐ Posted 3 days agoFixed-price
Experience level
Expensify is a team of generalists developing today's leading expense management tool. Maintaining our reputation as an innovative lead…
C++ Mentor for Matching Engine
Hourly ‐ Posted 3 days agoHours needed
Duration
Experience level
Format: Live pair programming only, via VS Code Live Share (screen share, both coding in real time). Job Description: If this budget…
Stock Investment Algorithm Developer
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking an experienced developer to create a stock investment algorithm for Kotak Neo. The ideal candidate will have a strong ba…
Paid 1-Hour Interview: Finance Expert Needed
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
I’m looking to speak with professionals who have experience in private equity, venture capital, investment advisory, family offices, in…
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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