Find the Best Java Development Jobs

Professionals on Upwork rate clients
Rating is 4.9 out of 5.
4.9/5
On average from 2M+ reviews

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 ago
$10
Fixed-price
Expert
Experience level

Built an intelligent CRM automation system using Claude AI and GoHighLevel to automate lead management, customer communication, follow-…

Java DevelopmentJava JobsJavaScriptChatbot DevelopmentAPILead GenerationArtificial IntelligenceAutomationPython
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Chatbot Development Specialist

Hourly ‐ Posted 2 days ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are seeking a skilled Chatbot Development Specialist to enhance our customer service experience. The ideal candidate will design and…

Java DevelopmentJava JobsAgile Software DevelopmentJavaScriptPHP
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Less than 30 hrs/week
Hours needed
More than 6 months
Duration
Expert
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…

Java DevelopmentCommunications
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Algorithm Optimization for NT8

Hourly ‐ Posted 2 days ago
Less than 30 hrs/week
Hours needed
Less than 1 month
Duration
Intermediate
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…

Java DevelopmentMATLABJava JobsCAlgorithm Development
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Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Expert
Experience level

Seeking an experienced engineer to develop a secure document automation platform using AI services. Requirements: React/Next.js Node.…

Java DevelopmentJava JobsAmazon Web ServicesAPI IntegrationJavaScriptNode.jsPythonAPI
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30+ hrs/week
Hours needed
More than 6 months
Duration
Expert
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…

Java DevelopmentAPI IntegrationJavaScriptArtificial IntelligenceJava JobsAPIPython
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Need payment integration and signup

Fixed-price ‐ Posted 2 days ago
$50
Fixed-price
Entry
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…

Java DevelopmentAPIPayment Gateway IntegrationJavaScriptHTMLJava Jobs
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Android App Developer for Custom Project

Fixed-price ‐ Posted 2 days ago
$500
Fixed-price
Intermediate
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…

Java DevelopmentAndroidMobile App Development
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30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

Embedded Qt/Linux Developer — Custom Digital Instrument Cluster for One-Off Supercar (CAN Bus) Job Description We are developing the e…

Java DevelopmentOracle DatabaseJava JobsAgile Software DevelopmentSAP
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Spring boot Backend Developer

Hourly ‐ Posted 2 days ago
Less than 30 hrs/week
Hours needed
Less than 1 month
Duration
Intermediate
Experience level

I have an idea like uber eats. I need to backend developer for my App

Java DevelopmentDockerAPI DevelopmentHTTPJava JobsAPIRESTful API
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Java Developers on Upwork
can earn $20–$40/hr.
Learn more below about how you can earn a career on the world’s work marketplace.
Java Developer average prices bell curve

$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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