Find the Best Java Development Jobs
Check out a sample of the 794 Java Development jobs posted on Upwork
Vibe Coder Needed — Full App Conversion & Upgrade
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
Budget: $500 Fixed | Timeline: 4–6 Weeks 📌 The Project I have a live Android app currently built as a hybrid Capacitor + React app.…
Senior Software Engineer - Java
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are looking for an experienced Senior Software Engineer with strong expertise in Java to help design, develop, and enhance scalable,…
WooCommerce / WordPress Developer to Build Custom "Design Your Own" Invitation Product Builder
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are looking for an experienced WordPress / WooCommerce developer to create a customized "Design Your Own" feature for our invitation…
Senior Full-Stack Developer for Mining Platform
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
RGT Industries is seeking a South Africa-based Senior Full-Stack Developer / Solutions Architect to convert our AI-generated dashboard…
Senior Full-Stack Engineer – API Integrations & Logistics Workflow Automation
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
We're looking for a senior full-stack engineer to help automate and scale our vehicle shipping platform. We already have a customer-fac…
AI-Powered Mobile App Integration and Bug Fixing
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
We’re looking for an experienced mobile app developer to improve an AI-powered application. The work includes fixing bugs, integrating…
Google Play App Submission Consultant
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Need help submitting an app to Google Play from a developer account. I have already authorized the developer to represent my brand, but…
Full Stack Developer for API Integration
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
I need a full stack developer to complete the back end of my novel app and website. The main work is connecting the API so the app and…
SEO Audit, Growth Strategy & Recommendations Required
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
We are looking for an experienced SEO specialist/agency to conduct a comprehensive SEO audit and develop a clear growth strategy for:…
Programmer/RPG Developer
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
The Programmer/RPG Developer is responsible for the design, development, deployment and implementation of robust, resilient and secure…
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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