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 962 Java Development jobs posted on Upwork

Backend/QA Development

Fixed-price ‐ Posted 1 day ago
$75
Fixed-price
Entry
Experience level

QA / Backend Support Engineer (QAB-1) - Fixed Sprint Project Project: SwarmPM Phase 1 Position ID: QAB-1 Engagement Type: Fixed-Price S…

Java DevelopmentJava JobsAutomated TestingPython
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Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are seeking an experienced Google Apps Script and Google Sheets developer to take over, stabilize, and complete an existing barcode-…

Java DevelopmentInventory ManagementGoogle Maps APIGoogle SheetsBusiness Process AutomationJavaScriptGoogle Apps Script
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Senior Fullstack Frontend SDK Engineer

Hourly ‐ Posted 1 day ago
30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

Join our team as a Senior Fullstack Frontend SDK Engineer to develop and maintain our software development kit. You'll work on both fro…

Java DevelopmentCMicrocontroller ProgrammingEmbedded C
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Web, Mobile & Software Developer

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

We are seeking a skilled developer to enhance our web, mobile, and software applications. The ideal candidate will have experience in A…

Java DevelopmentJavaScriptPHPHTML5
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API Technical Writer

Hourly ‐ Posted 1 day ago
30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

We're looking for an API Technical Writer to create and maintain developer-facing documentation for our API products in a healthcare/Sa…

Java DevelopmentEpic Systems Medical SoftwareJSONGitHubAPI Documentation
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ICP Scoring System Development

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

I am looking for an experienced professional with a strong understanding of building web applications, integrating APIs, and building a…

Java DevelopmentJavaScriptMySQLPHPJava Jobs
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Fullstack Developer for AI SaaS Platform

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

We are seeking a skilled full-stack developer to join our team for an AI SaaS platform project. The role involves developing both web a…

Java DevelopmentCSSFirebaseMySQLJava JobsNode.jsjQueryJavaScriptHTML5
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30+ hrs/week
Hours needed
More than 6 months
Duration
Expert
Experience level

Company: Alpus Consulting LLC Location: United States (Fully Remote) Compensation: USD $3k-7k/month, approx. part time role depending o…

Java DevelopmentC#Java JobsAPINode.jsC++Amazon Web ServicesPythonJavaScript
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30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

We built a real internal software platform using AI. It works. Right now it's sitting in a sandbox doing nothing, because nobody is dri…

Java DevelopmentJavaScriptAmazon Web Services
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Minecraft Developer for Plugins and Server Setup

Fixed-price ‐ Posted 1 day ago
$300
Fixed-price
Expert
Experience level

We are looking for a Minecraft developer to setup a new Minecraft server and develop plugins for it. Server setup GUI menus Economy It…

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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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