Find the Best Java Development Jobs
Check out a sample of the 1,056 Java Development jobs posted on Upwork
Software Developer for Health Assessment System
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking an experienced software engineer to develop a system that scores and analyzes results of health and fitness assessment t…
Game Development Training
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
Job Overview: We are looking for an engaging and creative Freelance Game Development Trainer to teach a 12-year-old student the fundam…
Website integration with the Mobile app
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
**Website Integration with the Mobile App** Website integration with a mobile app ensures seamless synchronization of data, user accou…
AI Integration for Salesforce File Download
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
I need someone to create an AI integration that performs a process to download a new file from a new Salesforce record from our Salesfo…
Experienced Trading Bot Developer Needed
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking an experienced developer to create a trading bot that predicts winning trades and supports traders. The ideal candidate…
Mobile App Developer for Ongoing Development
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking an experienced mobile app developer or development agency to take ownership of the ongoing development, enhancement, and…
GHL Automation Expert Required for Backend Optimization & Trigger Setup
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
We need a skilled GoHighLevel platform expert to audit and refine our sub-account setups. The ideal freelancer will review our active c…
Convert Google Sheets Program to App
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
I built a program in Google Sheets that I would like converted to a mobile and computer app. The ideal candidate will have experience i…
Urjent mobile app devoloper chahiya,GitHub ma project already done ,
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
Job Title: Need Expert React Native / Flutter Developer for Professional Gold Jewellery Ledger App (APK + Admin Panel) Job Description…
Extend State-Machine Crypto Bot
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
I need an experienced trading-bot developer to plug a robust, state-machine-driven framework into both the Bybit and BingX APIs at the…
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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