Find the Best Java Development Jobs
Check out a sample of the 961 Java Development jobs posted on Upwork
Discord Role Assignment Bot Developer
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
(I'm looking for someone to write a program or bot that manages role assignment in Discord. I want Discord to be connected to Stripe. A…
[$250] [Sentry: APP-2WT] HybridApp Android OldDot crash — Didn't get a policy in expensify.js #96176 - Expensify
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
Expensify is a team of generalists developing today's leading expense management tool. Maintaining our reputation as an innovative lead…
Google Play Error
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
Looking for a developer to help make our react native app compatible/buildable for ios and android. Currently builds perfectly fine for…
Cold Email Automation Software — SaaS Platform Development (Lead Database + Email Campaign System)
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
Cold Email Automation Software — SaaS Platform Development (Lead Database + Email Campaign System) We are looking for an experienced d…
WordPress Developer Needed to Build a Personalized Property Match System
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
I have an existing WordPress real estate website and I’m looking for an experienced WordPress developer to build a custom feature calle…
Platform Architect for AI Ecosystem
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
We are building an AI-native technology ecosystem that includes enterprise software, AI, and data platforms. The role involves architec…
Help me to test an Android App
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
You will receive the APK file for the new smart phone version of Converter App: https://converter.app/ Install the app and test all im…
Senior Software Engineer – Quark Publishing Platform (QPP) Specialist
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
Senior Software Engineer – Quark Publishing Platform (QPP) Specialist (Remote) We are seeking a Senior Software Engineer with hands-on…
Software architect
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
WE ARE HIRING Software Architect (Freelance / Consultant) Join a Stealth Healthcare Technology Startup Role Overview We are looking…
Senior Python Backend Engineer (FastAPI & AI-Native Systems)
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
The Opportunity We are building a next-generation, AI-native backend platform where large language models are not just an integration…
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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