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Java Developer Jobs in O Fallon, MO (NOW HIRING)

The Timberline Group

Java/J2EE Developer

Saint Louis, MO · On-site

$85 - $120/hr

  • Medical

  • Dental

  • Vision

  • PTO

Strong understanding of Object Oriented Programming * Analyze and develop Java solutions based on customers' needs * The ability to develop technical documentation * Proficient knowledge of Java ...

The Timberline Group

Java/J2EE Developer

Saint Louis, MO · On-site +1

$49.50 - $64.25/hr

... JAVA applications. 2. Perform software analysis, programming, testing, debugging based on technical requirements. 3. Identify production and non-production application issues and ensure designs ...

Tata Consultancy Service Limited

Java AI Engineer

O Fallon, MO · On-site

$90K - $110K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... skilled Java Developer with Agentic AI experience to design and develop next-generation Agentic AI applications. The ideal candidate will have strong expertise in Java, Spring Boot, backend ...

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO · On-site

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful ... JS, Java and Postgres SQL on AWS platform Overall 6+ years of Candidate experience needed Good ...

Synthesis Systems

Full Stack Java Developer

Creve Coeur, MO · On-site

$49.25 - $63.50/hr

The Full Stack Developer provides frontend and backend development support. The successful ... JS, Java and Postgres SQL on AWS platform Overall 6+ years of Candidate experience needed Good ...

The Timberline Group

Java/Angular Developer

Saint Louis, MO · On-site +1

$49.50 - $64.25/hr

The developer will meet with clients, analyze client requirements, propose & construct solutions ... Java/ Angular, J2EE, Servlets, XML * HTML, CSS, JavaScript, JQuery * JUnit, Mockito * Apache ...

Sonsoft Inc

Java/J2EE Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Experience in Server side programming using Java Servlets, JSP, JDBC, JavaBeans, EJB, log4J. * Experience in development/build tools like Eclipse, RAD, Soap UI, XML Spy, ANT, SVN, CVS etc.

Collabera

Java Developer

O Fallon, MO

$47.75 - $61.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Company Description About Collabera: Established in 1991, Collabera is one of the fastest growing end-to-end information technology services and solutions companies globally. As a half a billion ...

Sonsoft Inc

Java/J2ee Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Experience in Server side programming using Java Servlets, JSP, JDBC, JavaBeans, EJB, log4J. * Experience in development/build tools like Eclipse, RAD, Soap UI, XML Spy, ANT, SVN, CVS etc.

Sonsoft Inc

Java/J2ee Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Experience in Server side programming using Java Servlets, JSP, JDBC, JavaBeans, EJB, log4J. * Experience in development/build tools like Eclipse, RAD, Soap UI, XML Spy, ANT, SVN, CVS etc.

Sonsoft Inc

Java/J2EE Developer

Saint Louis, MO

$49.50 - $64.25/hr

Experience in Server side programming using Java Servlets, JSP, JDBC, JavaBeans, EJB, log4J. * Experience in development/build tools like Eclipse, RAD, Soap UI, XML Spy, ANT, SVN, CVS etc.

kollasoft

Java/J2EE developer Sr.

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java J2EE Developer in St.Louis,MO Duration: 2-3 Years Contract Need GC or USC only Communication: Present ideas assertively, aggressively and not be easily ignored. * Be articulate, persuasive and ...

kollasoft

Java/J2EE developer Sr.

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java J2EE Developer in St.Louis,MO Duration: 2-3 Years Contract Need GC or USC only Communication: Present ideas assertively, aggressively and not be easily ignored. * Be articulate, persuasive and ...

kollasoft

Java/J2EE developer Sr.

Saint Louis, MO

$49.50 - $64.25/hr

Java J2EE Developer in St.Louis,MO Duration: 2-3 Years Contract Need GC or USC only Communication: Present ideas assertively, aggressively and not be easily ignored. * Be articulate, persuasive and ...

Sonsoft Inc

Java/J2EE Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Experience in Server side programming using Java Servlets, JSP, JDBC, JavaBeans, EJB, log4J. * Experience in development/build tools like Eclipse, RAD, Soap UI, XML Spy, ANT, SVN, CVS etc.

The Timberline Group

Java / J2EE Developer

Saint Louis, MO · On-site +1

$49.50 - $64.25/hr

  • Medical

  • Dental

  • Vision

  • PTO

Strong understanding of Object Oriented Programming * Analyze and develop Java solutions based on customers' needs * The ability to develop technical documentation * Proficient knowledge of Java ...

The Timberline Group

Java / J2EE Developer

Saint Louis, MO · On-site +1

$49.50 - $64.25/hr

  • Medical

  • Dental

  • Vision

  • PTO

Strong understanding of Object-Oriented Programming (OOP) * Analyze and develop Java solutions based on customers' needs * The ability to develop technical documentation * Proficient knowledge of ...

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Showing results 41-60

All JobsJava Developer JobsJava Developer Jobs in O'Fallon, MO

Java Developer information

See O Fallon, MO salary details

$14

$53

$72

How much do java developer jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for java developer in O'Fallon, MO is $53.04, according to ZipRecruiter salary data. Most workers in this role earn between $45.87 and $59.38 per hour, depending on experience, location, and employer.

What is a Java developer?

Java Developers are software professionals who specialize in designing, developing, and maintaining applications using the Java programming language. They work on a variety of projects, including web, desktop, and mobile applications, as well as enterprise-level systems. Java Developers are responsible for writing clean and efficient code, testing and debugging programs, and collaborating with other team members to deliver robust software solutions. Their expertise in Java and related technologies is crucial for building scalable and secure applications.

What do Java developers do?

Java developers create dynamic computer applications and websites using the Java computer programming language. The Java language integrates with other programming languages and infrastructures to build robust business applications and software for a wide range of industries, from finance and healthcare to content management and social media. Java developers may be involved in all stages of application development, from conception and design to testing, production, and ongoing maintenance. The goal is to provide efficient solutions for business needs.

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, usually supported by a degree in computer science or related fields. Familiarity with frameworks such as Spring or Hibernate, experience with version control systems like Git, and sometimes certification like Oracle Certified Professional Java Programmer (OCPJP) are commonly required. Effective problem-solving, teamwork, and attention to detail are crucial soft skills in this role. These skills ensure robust, maintainable, and scalable software solutions that meet project requirements and business goals.

What are some common challenges Java developers face when working on large-scale enterprise applications?

Java Developers working on large-scale enterprise applications often encounter challenges such as managing complex codebases, ensuring efficient performance, and integrating with legacy systems. Collaborating with cross-functional teams is crucial, as these projects typically involve multiple developers, QA engineers, and business analysts. Additionally, maintaining code quality and adhering to best practices while meeting tight deadlines can be demanding. Staying up-to-date with evolving frameworks and tools also plays a key role in overcoming these challenges.

What is the difference between Java Developer vs Software Engineer?

AspectJava DeveloperSoftware Engineer
Required CredentialsBachelor's in Computer Science or related, Java certificationsBachelor's in Computer Science or related, various certifications
Work EnvironmentDevelops Java-based applications, often in teamsDesigns and develops software solutions, may include Java projects
Employer & Industry UsageTech companies, finance, e-commerceBroad industry, including tech, finance, healthcare

Java Developers focus specifically on Java programming, while Software Engineers have a broader role in designing and developing software solutions across multiple languages. Both roles often require similar educational backgrounds and certifications, but Java Developers typically work more directly with Java-based projects, whereas Software Engineers may handle diverse technologies.

Is a Java developer still in demand?

Java developers remain in high demand due to the language's widespread use in enterprise applications, Android development, and backend systems. Skills in frameworks like Spring and knowledge of cloud platforms can enhance job prospects in this field.
More about Java Developer jobs

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The most popular types of Java Developer jobs in O'Fallon, MO are:

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For Java Developer jobs in O'Fallon, MO, the most frequently searched job titles are:

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The top searched job categories for Java Developer jobs in O'Fallon, MO are:

What cities near O'Fallon, MO are hiring for Java Developer jobs?

Cities near O'Fallon, MO with the most Java Developer job openings:

Java Developer jobs near you
Infographic showing various Java Developer job openings in O'Fallon, MO as of August 2026, with employment types broken down into 79% Full Time, 8% Part Time, and 13% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $110,322 per year, or $53 per hour.

Java/J2EE Developer

The Timberline Group

Saint Louis, MO • On-site

$85 - $120/hr

Other

Medical, Dental, Vision, PTO

Re-posted 24 days ago

Job description

We strive to keep learning and using the latest technologies from mobile (all platforms) to cloud (Azure) to big data (Hadoop/Cassandra) to IoT. You would work with a team of talented individuals who share a strong passion for problem solving and software. You will be developing application solutions through the complete SDLC in a fun, challenging, and casual environment

Qualifications
  • 3+ years of development experience in JAVA/J2EE
  • Strong understanding of Object Oriented Programming
  • Analyze and develop Java solutions based on customers’ needs
  • The ability to develop technical documentation
  • Proficient knowledge of Java & J2EE (including JSP, EJB, JDBC, SQL, XML, HTML and associated technologies) and the use of those technologies in n-tier development environments
  • Proficient knowledge is also expected in object-oriented application development principles, theories, and concepts using J2EE specific design patterns and usage
  • Web Services (RestFul & SOAP)
  • Experience with the use of version control systems for code management such as GIT, SVN, CVS
  • Ability to work on your own or with a team
  • Adaptability, organized, and a strong work ethic.
Nice to haves

We strive to keep learning and using the latest technologies from mobile (all platforms) to cloud (Azure) to big data (Hadoop/Cassandra) to IoT. You would work with a team of talented individuals who share a strong passion for problem solving and software. You will be developing application solutions through the complete SDLC in a fun, challenging, and casual environment

Qualifications
  • BA/BS degree
  • 3+ years of development experience in JAVA/J2EE
  • Strong understanding of Object Oriented Programming
  • Analyze and develop Java solutions based on customers’ needs
  • The ability to develop technical documentation
  • Proficient knowledge of Java & J2EE (including JSP, EJB, JDBC, SQL, XML, HTML and associated technologies) and the use of those technologies in n-tier development environments
  • Proficient knowledge is also expected in object-oriented application development principles, theories, and concepts using J2EE specific design patterns and usage
  • Web Services (RestFul & SOAP)
  • Experience with the use of version control systems for code management such as GIT, SVN, CVS
  • Ability to work on your own or with a team
  • Adaptability, organized, and a strong work ethic.
Nice to haves
  • XML / JSON / HTML / Oracle DB / JavaScript / Angular
What can we offer?
  • 100% premium-paid medical insurance for employee-only-coverage
  • 100% premium-paid dental insurance for employee-only-coverage
  • 100% premium-paid vision insurancefor employee-only-coverage
  • Premium assistance for dependent medical/dental/vision insurance
  • Paid Time Off (PTO)
  • Paid Holidays
  • Educational assistance, some certifications and professional memberships paid
  • Professional Referral Program
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