Find the Best Java Development Jobs
Check out a sample of the 1,092 Java Development jobs posted on Upwork
Claude AI CRM Automation with GoHighLevel + n8n
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
Built an intelligent CRM automation system using Claude AI and GoHighLevel to automate lead management, customer communication, follow-…
Chatbot Development Specialist
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking a skilled Chatbot Development Specialist to enhance our customer service experience. The ideal candidate will design and…
Software Engineer for handling client communication(Not engineering, part-time)
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We're a growing software talent team seeking a US-based software engineer. You'll work with an experienced engineering team and be prim…
Algorithm Optimization for NT8
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We need a freelancer to help resolve issues with an algorithm running on NT8 across 15 client VPS instances. The goal is to ensure the…
Lead Full Stack Developer for AI Document Automation Platform
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Seeking an experienced engineer to develop a secure document automation platform using AI services. Requirements: React/Next.js Node.…
Systems Integration, AI, & Automation Developer
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We're a 30-year, family-owned home improvement company in Michigan. We run a modern but disconnected software stack and we're looking f…
Need payment integration and signup
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
Hello I have game app(similar to aviator)flight game,the game code is ready we just need to add signup login feature (firebase) where u…
Android App Developer for Custom Project
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
We are seeking an experienced Android app developer to create a custom app for our business. The ideal candidate will have a strong bac…
Automotive Custom Digital Instrument Cluster Developer
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Embedded Qt/Linux Developer — Custom Digital Instrument Cluster for One-Off Supercar (CAN Bus) Job Description We are developing the e…
Spring boot Backend Developer
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
I have an idea like uber eats. I need to backend developer for my App
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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