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

Software Technology Inc

Java Developer

Maryland Heights, MO · On-site

$49.25 - $63.75/hr

Projects are usually of considerable complexity and require a mastery of development tools like Eclipse IDE for Java EE Developers, GitHub, Jira, Jenkins, shell scripting. Requires advanced knowledge ...

Gemini

Java Developer

Saint Louis, MO

$49.50 - $64.25/hr

Java Developer Location: St.Louis, MO - Inperson Interview Job Type: Full Time Only OPT EAD, CPT EAD, H4 EAD, L2 EAD, H1B Visa Transfer JOB DETAILS: Below highlighted skills are mandatory. Experience ...

Gemini

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java Developer Location: St.Louis, MO - Inperson Interview Job Type: Full Time Only OPT EAD, CPT EAD, H4 EAD, L2 EAD, H1B Visa Transfer JOB DETAILS: Below highlighted skills are mandatory. • ...

Atria Group LLC

Java Developer

Saint Louis, MO

$49.50 - $64.25/hr

Unigroup is in need of a senior Java developer. They will be part of a 10+ person team developing on a large rewrite of their enterprise system along with smaller projects as well. This individual ...

eTeam

Java Developer - Mobile Tech

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java Developer - Mobile Tech Location: St. Louis, MO - Design, develop, and maintain scalable Java-based applications and services following best coding practices. - Write clean, efficient, and well ...

Pyramid IT

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java Developer Location - St. Louis, MO Duration: Long term contract Work Authorization status : US Citizen & Green card only Mandatory Skills: J2EE (Java, JSP, Servlets, Filters, Listeners, JSTL, EL ...

Georgia IT Inc

Java Developer- St Louis

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Position- Java Developer Location- St Louis, MO Duration- Contract Rate- DOE • Strong Java developer with very good understanding of micro services. • Grasp of software engineering skills in ...

Atria Group LLC

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Required Skills: 5+ years advanced computer programming skills in Java, Java Servlet, Javabean, EJB, OO Design, HTML. Advanced working skills in programming with SQL or Oracle. Experience writing ...

Georgia IT Inc

Java Developer- St Louis, MO

Saint Louis, MO · On-site

$49.50 - $64.25/hr

Java Developer Location: St Louis, MO Duration: Contract Rate: DOE * Strong Java developer with very good understanding of micro services. * Grasp of software engineering skills in modular design ...

Gallop Resources Inc

Fullstack Java Developer

Saint Louis, MO · On-site

$51 - $65.75/hr

Ability to thrive in a team-oriented, fast-paced environment Qualifications Fullstack Java Developer Additional Information All your information will be kept confidential according to EEO guidelines.

Navtech, Inc.

FULL STACK JAVA DEVELOPER

Lake Saint Louis, MO · On-site

$49.75 - $64.25/hr

JOB TITLE: FULL STACK JAVA DEVELOPER DURATION: 12 MONTHS CONTRACT ON W2 LOCATION: 100% REMOTE RESPONSIBILITIES: * Interacts with the business analysis team to understand project requirements.

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How much do java developer jobs pay per hour?

As of May 28, 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 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 are Java Developers?

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.

Is AI replacing Java developers?

AI is automating certain coding tasks and improving software development processes, but Java developers are still essential for designing, implementing, and maintaining complex applications. Skills in programming, problem-solving, and understanding AI tools enhance a Java developer's value in the evolving tech landscape.

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.

More about Java Developer jobs
What are the most commonly searched types of Java Developer jobs in O'Fallon, MO? The most popular types of Java Developer jobs in O'Fallon, MO are:
What are popular job titles related to Java Developer jobs in O'Fallon, MO? For Java Developer jobs in O'Fallon, MO, the most frequently searched job titles 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 May 2026, with employment types broken down into 100% Contract. Highlights an 100% In-person job distribution, with an average salary of $110,322 per year, or $53 per hour.
Java Developer

Java Developer

Software Technology Inc

Maryland Heights, MO • On-site

$49.25 - $63.75/hr

Other

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

Job description

Software Developer

Designs, develops, modifies, enhances and implements software systems designed to support new or existing business initiatives. Projects are usually of considerable complexity and require a mastery of development tools like Eclipse IDE for Java EE Developers, GitHub, Jira, Jenkins, shell scripting. Requires advanced knowledge of Spring framework, Kafka, JMS, SQL, REST, SOA. Requires basic knowledge of monitoring tools and technologies like Splunk, AppDynamics. Works in most phases of a project and reviews work of less experienced staff members. Performs maintenance and provides technical assistance and advice on existing software solutions. Provide mentorship and coaching to entry, junior and associate level team members, including interns, to ensure a effective assimilation to the team and resource for professional growth.

  • Actively and consistently supports all efforts to simplify and enhance the customer experience
  • Codes and performs unit and integration testing of software to ensure proper and efficient execution and adherence to business and technical requirements
  • Codes, tests, and debugs new software or makes enhancements to existing software
  • Designs and writes programs according to functional and non-functional requirements
  • Leads code review sessions to validate adherence with development standards
  • Reviews and provides input into development standards
  • Develops and maintains technical documentation
  • Serves as final escalation point to resolve incidents and problems for production applications and web services supported by the team in accordance with identified Service Level Agreements
  • Collaborates with internal customers, technical and architecture teams to solve complex software problems
  • Provides general system users and management with system analysis and feedback
  • Influences system design by identifying and recommending design and requirements needs for software enhancements
  • Mentors and coaches less experienced staff
  • Maximizes the efficiency of the various software systems by implementing, monitoring, testing and auditing new software programs
  • Participates in continuous performance improvement sessions to discuss opportunities to improve processes or standards
  • Analyzes and resolves computer related problems by coordinating with in-house personnel to diagnose and fix operational issues, as well as consulting, advising and training on specialized features and functions
  • Follows established configuration/change control processes

Required Skills: Java Basic Qualification: -3-5 years of Java experience -Kafka experience is a plus -Spring boot experience -Production Support experience -Database experience (Oracle, MySQL or SQL Server)-Charter uses Oracle - Linux/Unix experience -60% Development and 40% Production support Additional Skills: -3-5 years of Java experience -Kafka experience is a plus -Spring boot experience -Production Support experience -Database experience (Oracle, MySQL or SQL Server)-Charter uses Oracle - Linux/Unix experience -60% Development and 40% Production support Background Check: Yes Drug Screen: Yes

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