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Check out a sample of the 1,555 Java Development jobs posted on Upwork

Thingworx Developer Hourly ‐ Posted 1 day ago

Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Intermediate
Experience level

Primary Skills:  At least 3+ years of experience on ThingWorx Platform  Strong programming background and expertise in JavaScript and…

Java Development JavaScript DevOps Java Jobs
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$10,000
Fixed-price

Intermediate
Experience level

You can find our cycles of numbers in the csvs folder. Main format of the csv files Each row represents a single game and everything o…

Java Development C# C++ Data Structures Artificial Intelligence Data Analysis Data Science Algorithm Development Python Java Jobs
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Selenium Automation,REST API Hourly ‐ Posted 1 day ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience level

Selenium Automation framework design,REST API Automation framework

Java Development Selenium WebDriver Cucumber Functional Testing API Development Java Jobs Automated Testing Test Automation Framework
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Basket Recommendation AI 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 and experienced developer to build a highly effective basket recommendation system for our grocery e-commerce…

Java Development API JavaScript Java Jobs PHP Python Data Science
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Java Developer Fixed-price ‐ Posted 1 day ago

$264
Fixed-price

Intermediate
Experience level

Budget : 1k for 2 hrs Time : 9 PM IST Strong proficiency in java spring boot Experience with microservices architecture Expertise in…

Java Development Spring Framework Java Jobs
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TIBCO Java Developer - Full Time Fixed-price ‐ Posted 1 day ago

$1,800
Fixed-price

Intermediate
Experience level

Java Senior API Engineer – Tibco and Java We are seeking a highly skilled and experienced Senior API Engineer to join our dynamic team…

Java Development Java Jobs TIBCO Spotfire TIBCO ActiveMatrix BusinessWorks AWS Lambda
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Google play console account needed Fixed-price ‐ Posted 1 day ago

$15
Fixed-price

Intermediate
Experience level

I need a developer who has it's own google play console account . I will pay $15 per app published on your account. I hope you would l…

Java Development Java Jobs Android App Development Android Google Play
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Multiplayer Backend Developer Hourly ‐ Posted 1 day ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience level

Hello We are looking for a Backend Developer who has worked with AWS Gamelift for Multiplayer Online Games, Key Role -Design and implem…

Java Development Amazon S3 API Node.js AWS Application Java Jobs Database Architecture MongoDB
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Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience level

I run a big marketing company in Korea and this is a new business model using our system. The goal is to find an already certified web…

Java Development HTML Java Jobs JavaScript Web Development PHP
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30+ hrs/week
Hours needed

1 to 3 months
Duration

Entry
Experience level

We are selling neon sign in Europe. To convince the customer to buy a neon sign we need to show them a preview/example of how their log…

Java Development JavaScript Java Jobs Python
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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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