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Contract Java Developer Jobs in Saint Louis, MO (NOW HIRING)

UNCOMN

Software Developer 2 (Associate)

O Fallon, IL · On-site

$85 - $115/hr

  • Medical

  • Retirement

  • PTO

Design, develop, test, and maintain software applications using Java and Microsoft Azure ... Willingness to obtain relevant certifications based on future client or contract requirements.

Booz Allen Hamilton

Agentic AI Developer

O Fallon, IL · On-site

$99K - $225K/yr

  • Medical

  • Life

  • Retirement

  • PTO

Experience with programming languages such as Python or Java * Experience with software design ... as well as contract-specific affordability and organizational requirements. The projected ...

Leonardo DRS

Embedded Software Engineer Intern

Bridgeton, MO · On-site

$41K - $53K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

This position will be working on a variety of programs and writing (C,C++,C#, Java and Python ... Federal contract labor categories and contract wage rates, collective bargaining agreements ...

Leonardo DRS

Embedded Software Engineer Intern

Bridgeton, MO · On-site

$41K - $53K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

This position will be working on a variety of programs and writing (C,C++,C#, Java and Python ... Federal contract labor categories and contract wage rates, collective bargaining agreements ...

Leonardo DRS

Embedded Software Engineer Intern

Bridgeton, MO · On-site

$41K - $53K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

This position will be working on a variety of programs and writing (C,C++,C#, Java and Python ... Federal contract labor categories and contract wage rates, collective bargaining agreements ...

Kanak Elite Services Inc

Quality Engineer I

O Fallon, MO · On-site

$67K - $87K/yr

Quality Engineer (Glider required) Duration : 12+ months contract Location : O'Fallon, MO Hybrid ... Java, JavaScript with good understanding of Spring boot and RESTful APIs Experience with unit ...

Adidev Technologies Inc

Android Developer

Saint Louis, MO · On-site

$30 - $40/hr

Highly Competitive, commensurate with expertise Type: Full-time (W2 or Contract 1099), 40 hours per ... Proficiency in Java and Kotlin (at least 1 year of experience). Published at least 1 application on ...

Adidev Technologies Inc

Android Developer

Saint Louis, MO · On-site

$30 - $40/hr

Highly Competitive, commensurate with expertise Type: Full-time (W2 or Contract 1099), 40 hours per ... Proficiency in Java and Kotlin (at least 1 year of experience). Published at least 1 application on ...

Booz Allen Hamilton, Inc.

Agentic AI Developer

O Fallon, IL · On-site +1

$99K - $225K/yr

  • Medical

  • Life

  • Retirement

  • PTO

Experience with programming languages such as Python or Java * Experience with software design ... as well as contract-specific affordability and organizational requirements. The projected ...

Booz Allen Hamilton

Agentic AI Developer

O Fallon, IL · On-site

$99K - $225K/yr

  • Medical

  • Life

  • Retirement

  • PTO

Experience with programming languages such as Python or Java * Experience with software design ... as well as contract-specific affordability and organizational requirements. The projected ...

Booz Allen Hamilton, Inc.

Agentic AI Developer

O Fallon, IL · On-site

$99K - $225K/yr

  • Medical

  • Life

  • Retirement

  • PTO

Experience with programming languages such as Python or Java * Experience with software design ... as well as contract-specific affordability and organizational requirements. The projected ...

TecTammina

Agile Engineering Coach

Saint Louis, MO · On-site

... Java Programmer * - 3 years of JUnit, Jenkins/Hudson, Ant/Maven * - Experience coaching and ... Contract to hire after 6 Months Need Citizens Share the Profiles to michael(at)tammina.com Contact ...

Tammina

Agile Engineering Coach

Saint Louis, MO · On-site

... Java Programmer * - 3 years of JUnit, Jenkins/Hudson, Ant/Maven * - Experience coaching and ... Contract to hire after 6 Months Need Citizens Share the Profiles to michael(at)tammina.com Contact ...

Tammina

Agile Engineering Coach

Saint Louis, MO

... as a Java Programmer - 3 years of JUnit, Jenkins/Hudson, Ant/Maven - Experience coaching and ... Contract to hire after 6 Months Need Citizens Share the Profiles to michael(at)tammina.com Contact ...

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Showing results 41-60

All JobsContract Java Developer JobsContract Java Developer Jobs in Saint Louis, MO

Contract Java Developer information

See Saint Louis, MO salary details

$15

$55

$75

How much do contract java developer jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for contract java developer in Saint Louis, MO is $55.12, according to ZipRecruiter salary data. Most workers in this role earn between $47.69 and $61.68 per hour, depending on experience, location, and employer.

What is a contract Java developer?

Contract Java Developers are software professionals who specialize in the Java programming language and are hired on a contract basis, rather than as permanent employees. They typically work for a set period of time or on a specific project, developing, testing, and maintaining Java-based applications according to the client’s requirements. These developers are often brought in to provide specialized expertise, handle workload spikes, or complete short-term projects. Their roles may include writing code, fixing bugs, integrating systems, and ensuring applications meet performance and security standards.

What are the key skills and qualifications needed to thrive as a contract Java developer?

To thrive as a Contract Java Developer, you need strong Java programming skills, experience with object-oriented design, and a solid understanding of software development lifecycles, typically supported by a relevant degree or certifications. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, and version control systems like Git is commonly required. Excellent problem-solving, adaptability, and clear communication skills help you efficiently integrate with new teams and projects. These abilities ensure you can quickly deliver high-quality, maintainable code that meets client requirements in a dynamic contract environment.

What are some common challenges faced by contract Java developers when integrating with existing teams and projects?

Contract Java Developers often need to quickly adapt to unfamiliar codebases and team workflows, which can be challenging given tight project timelines. Effective communication is essential, as they must coordinate with permanent staff, understand project requirements, and align with established coding standards and deployment processes. Many contractors also need to manage multiple projects or clients simultaneously, requiring strong time management skills. Proactively seeking clarity on expectations and leveraging onboarding resources can help ease the integration process.

What is the difference between Contract Java Developer vs Contract Software Engineer?

AspectContract Java DeveloperContract Software Engineer
Required CredentialsBachelor's in Computer Science, Java certificationsBachelor's in Computer Science or related, various programming certifications
Work EnvironmentDevelopment teams, client sites, remote optionsDevelopment teams, client sites, remote options
Industry UsageTech, finance, healthcare, e-commerceTech, finance, healthcare, e-commerce
Search & Comparison IntentFocus on Java-specific roles, Java projectsBroader software development roles, multiple languages

Contract Java Developers specialize in Java programming and are often sought for Java-specific projects. Contract Software Engineers have a broader scope, working with multiple programming languages and technologies. Both roles are common in tech industries and share similar work environments, but the Java Developer role is more focused on Java expertise.

Are Contract Java developers still in demand?

Contract Java developers remain in demand due to ongoing needs for software development, system integration, and enterprise applications. Skills in frameworks like Spring and experience with cloud platforms can enhance job prospects in this field.

What are the most commonly searched types of Java Developer jobs in Saint Louis, MO?

The most popular types of Java Developer jobs in Saint Louis, MO are:

What are popular job titles related to Contract Java Developer jobs in Saint Louis, MO?

For Contract Java Developer jobs in Saint Louis, MO, the most frequently searched job titles are:

What job categories do people searching Contract Java Developer jobs in Saint Louis, MO look for?

The top searched job categories for Contract Java Developer jobs in Saint Louis, MO are:

Contract Java Developer jobs near you
Infographic showing various Contract Java Developer job openings in Saint Louis, MO as of August 2026, with employment types broken down into 81% Full Time, 5% Part Time, and 14% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $114,656 per year, or $55.1 per hour.

Senior Software Engineer in Test (SDET) / Senior Automation Engineer - Only W2

Saransh Inc

O Fallon, MO • On-site

$103K - $134K/yr

Contractor

Re-posted 7 days ago

Job description

Role: Software Engineer in Test / Senior Automation Engineer
Location: O'Fallon, MO (Hybrid - 2 days a week onsite)
Job Type: W2 Contract
 
NOTE: No C2C (or) Third-party candidates
 
Experience level: Senior
 
Requirements: 
• Overall 9 years of career experience in Automation Testing with Java
• Strong Java coding experience 
• Use of JUnit/Jbehave or Cucumber frameworks
• Experience in regression testing as releases move through the different environments.
• Experience in Testing Web services, Web UI, APIs
• Ability to create good acceptance and integration test automation scripts and integrate with Continuous integration (Jenkins) and code coverage tools (Sonar, Clover)
• Passionate about code quality and coding best practices. 
• Good knowledge of Linux / Unix 
• Sound knowledge of Java, Spring, JUnit, Eclipse IDE, Rest Assured, Jbehave/Cucumber frameworks, Databases, APIs (REST/SOAP), Continuous Delivery concepts and tools such as Jenkins/Bamboo, vulnerability tools such as Sonar, Checkmarx/Fortify, etc.
• Strong knowledge of traditional testing methodologies and how it applies exploratory testing in an Agile environment
 
Description:
• This position will be responsible for delivering of Test Engineering services (Regression Testing, Code quality, Testing Services, Testing and Environment automation, Development Collaboration, Continuous Integration) .
• Good understanding of BDD/TDD practices, code review and analysis techniques, and open source agile testing frameworks. 
• Author automated test suites with code, front end GUI automation and API testing
• Regression / integration testing as release moves through different environments before Production deployment
• Highlight and identify any testing gaps found through regression testing and working with Test / Development teams to resolve them
• Perform ad hoc / exploratory testing methodically to ensure system is working as expected by end user
• Comprehend user stories to understand task items per story in the context of all levels of testing (unit, functional, integration, and regression)
• Track regression testing progress and defects via Rally
• Participate in the process to continually enhance best practices for quality assurance
• Interacts with technology staff including Test Engineers, Developers, DevOps Engineers, Product management, and Program management to identify scope of project/s and deliver services. 
• Drive adoption of development services (Quality Engineering, Performance Engineering, Continuous Integration, Continuous Delivery, and Collaboration) among various delivery teams.
• Work in an agile environment, attend daily stand up calls and give daily status reports and call out any issues or blockers that may delay release delivery