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Java Jobs in California, MO (NOW HIRING)

USM

T-SQL Developer

Jefferson City, MO

SQL, JAVA, C#, ASP, .NET, XML) Familiarity with standard object-oriented development techniques (OOD) Relevant work experience and/or internships Additional Information If my requirement matches your ...

DataAnnotation

UI Engineer - AI Trainer

California, MO · On-site +1

$60/hr

JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, or Swift. Excellent writing and grammar skills. A bachelor's degree (completed or in progress). Previous experience as a Software ...

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How much do java jobs pay per hour?

As of May 28, 2026, the average hourly pay for java in California, MO is $50.74, according to ZipRecruiter salary data. Most workers in this role earn between $43.89 and $56.78 per hour, depending on experience, location, and employer.

What Is Java?

Java is a class-based object-oriented programming language that was developed in 1995 by Sun Microsystems and later bought by Oracle. Java was designed as a general language capable of programming software for commercial use. It is based on several previous languages such as Objective C, C++, and C#. Java can be used on most major operating systems, including Windows, Apple, and Linux distributions. There is also a Java virtual machine, which allows programmers and developers to work on different operating systems within a single platform.

What are the key skills and qualifications needed to thrive as a Java Developer, and why are they important?

To thrive as a Java Developer, you need strong proficiency in Java programming, object-oriented design, and a solid understanding of software development principles, typically supported by a degree in computer science or a related field. Familiarity with development frameworks like Spring or Hibernate, version control systems such as Git, and relevant certifications (e.g., Oracle Certified Java Programmer) is highly beneficial. Analytical thinking, problem-solving, and effective communication are important soft skills that distinguish top candidates in collaborative environments. These skills and qualifications are vital for building robust, efficient applications and contributing effectively to development teams.

How does a Java developer typically collaborate with other teams during a software project?

Java developers frequently work alongside front-end developers, QA specialists, and project managers to ensure smooth delivery of software projects. They participate in code reviews, daily stand-ups, and sprint planning meetings, sharing progress and addressing technical challenges collaboratively. Effective communication and coordination with other departments, such as DevOps for deployment or UX/UI teams for interface integration, are essential for delivering high-quality applications. This collaborative environment helps Java developers expand their technical knowledge and build strong professional relationships.

What does a Java Developer do?

A Java Developer is a software professional who specializes in designing, developing, and maintaining applications using the Java programming language. They often work on web, mobile, or enterprise applications, collaborating with other programmers, designers, and stakeholders to deliver functional software solutions. Their responsibilities include writing clean and efficient code, debugging issues, and ensuring applications are secure and scalable. Java Developers are also involved in testing, deploying, and updating software as technology and requirements evolve.

What is the difference between Java vs Python Developer?

AspectJava DeveloperPython Developer
Required CredentialsBachelor's in Computer Science, Java certificationsBachelor's in Computer Science, Python certifications
Work EnvironmentEnterprise applications, Android developmentWeb development, data science, automation
Industry UsageFinance, telecom, enterprise softwareTech startups, data analysis, AI projects
Common Search/ComparisonJava DeveloperPython Developer

Java and Python developers often share similar educational backgrounds and certifications. Java developers typically work on enterprise applications and Android development, while Python developers focus on web development, data science, and automation. Both roles are highly sought after in different industry sectors, with Java more common in large enterprises and Python popular in startups and AI projects.

More about Java jobs
What cities near California, MO are hiring for Java jobs? Cities near California, MO with the most Java job openings:
Java jobs near you
Infographic showing various Java job openings in California, MO as of May 2026, with employment types broken down into 70% Full Time, 19% Part Time, and 11% Contract. Highlights an 73% Physical, 3% Hybrid, and 24% Remote job distribution, with an average salary of $105,542 per year, or $50.7 per hour.
Mobile QA Engineer - AI Trainer

Mobile QA Engineer - AI Trainer

DataAnnotation

California, MO • On-site, Remote

$60/hr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Join the DataAnnotation team and contribute to developing cutting‐edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for proficient programmers to help advance AI development. As a member of DataAnnotation's coding team, you'll be part of a growing community of over 100,000 professionals — including front‐end, back‐end, full‐stack, machine learning, and other engineers — who are driving real‐world impact in AI development.

Our platform offers an engaging blend of flexibility and challenge: you'll work closely with state‐of‐the‐art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a full‐time role, while others treat it as their primary focus, choosing projects and schedules that align with their availability and goals.

To get started, once you sign up for an account, you'll take a short assessment (this serves as our version of an interview). If you pass that assessment, you'll receive an email confirmation, and paid work will become available to you through our platform. Benefits Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.

Flexible schedule: choose which projects you take on and when you work. Competitive pay: projects are paid hourly, up to $60 USD/hour. Opportunities for higher‐paying projects are available with strong performance.

Impact: help shape the future of AI technologies. Responsibilities Design and solve diverse coding problems used to train AI systems with an emphasis on Android development. Write clear, high‐quality code snippets and detailed explanations.

Evaluate AI‐generated code for accuracy, performance, and clarity. Provide feedback that directly shapes the next generation of AI models. Qualifications Fluency in English (native or bilingual level).

Preferred experience in Kotlin. Proficiency in at least one of the following programming languages or frameworks: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, or Swift. Excellent writing and grammar skills.

A bachelor's degree (completed or in progress). Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred. Note: Payment is made via PayPal.

We will never ask for any money from you. PayPal will handle any currency conversions from USD. This job is only available to those in the US, Canada, UK, Ireland, Australia, and New Zealand.

Those located outside of these countries will not see work or assessments available on our site at this time. #J-18808-Ljbffr

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