Find the Best Java Development Jobs
Check out a sample of the 917 Java Development jobs posted on Upwork
Teach Using Upwork App
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Saya membutuhkan seseorang untuk mengajari saya menggunakan apk upwork. Saya ingin memahami cara menggunakan platform ini dengan baik u…
Web Development and Software Engineering Intern
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Join our team as a Web Development and Software Engineering Intern. You'll work on exciting projects, collaborating with experienced pr…
Ai App developer
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
Developer to build a modern AI chatbot application similar to ChatGPT for Android and iOS. The app should provide fast, intelligent, an…
n8n AI Workflow Automation Developer for Order Processing
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
We're looking for an experienced n8n developer to build an AI-powered order processing workflow for our wholesale business. The automat…
Senior Full Stack Engineer (Web, iOS & Android) AI ML user/business
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
We're building an AI-powered SaaS platform available on Web, iOS, and Android.We're looking for an experienced full stack developer to…
Android Developer Needed – Smart Workout Planner App with Progress Tracking
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
I'm looking for an experienced Android developer to build a Smart Workout Planner app that helps users create personalized workout plan…
Technical Team for Policy Runtime Modification
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking a technical team to adopt and modify an existing open-source policy runtime, such as Microsoft Agent Governance Tool. Th…
Software, Web, and App Developer
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
We are seeking a versatile developer to work on software, web, and app projects. The ideal candidate will have experience in full-stack…
Partner with Experienced Developer
Hourly ‐ Posted 1 day agoHours needed
Duration
Experience level
Looking to partner with a highly experienced developer that has a lot of workload, want to collaborate with you and my developer team t…
OCR Programmer for Program Optimization
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
We are seeking an experienced OCR Programmer to optimize an existing program. The ideal candidate will have a strong background in OCR…
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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