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

Senior Software Engineer - Java Developer

MO · On-site

$53.50 - $68.25/hr

... Java Developer) Location: O'fallon, Missouri Duration: 24 months Experiece: 7+ years Skills summary: • Advanced in with Linux and Java development (JDK 1.7 or greater), design patterns, threading ...

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

... in Java & Unix. • Assist production support of applications in PROD and Pre PROD. • Conduct ... and programming experience and SOLID principles • Experience in implementing various design ...

Java Developer - Consultant

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

Java Consultant Location: St. Louis, MO Experience: 8+ years Duration: 12+ months Role: * Hands-on developer who writes high quality, secure code that is modular, functional and testable. * Lead the ...

Java Developer

Saint Louis, MO

$49.50 - $64.25/hr

The Java Developer will be responsible for the following: * Design, develop, and configures software systems to meet market and/or client requirements either end-to-end from analysis, design ...

Sr. Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

* Strong Java developer with very good understanding of micro services * Develop and consume APIs using HTTP/Rest. * Skills on at least one major JS library /frame work. * Exposure to relational/non ...

Sr. Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

Sr. Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Core Java (Mandatory) Web Service [REST and SOAP] (Mandatory) Hibernate or ...

JAVA Developer

Chesterfield, MO · On-site

$50.50 - $65.25/hr

Expertise with the Eclipse IDE, and related Java build tools and techniques * Familiarity with Oracle and PL/SQL * Good team working skills and meticulous attention to detail Additional Information ...

Java Developer

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

Develop and execute unit and integration tests as per the project plan. * Assist in the setup and execution of demonstrations as required Required Skills: * 5+ years of Angular and Java experience.

Java Developer with PL/SQL

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

Java Developer with PL/SQL Location: St Louis, MO Remote till Covid Duration: 6 to 12 Months Contract * Assist in the development of enterprise systems making specific determinations about system ...

Java Developer

O Fallon, MO · On-site

$47.75 - $61.75/hr

The Sr. Software Engineer opportunity we have in St. Louis, MO. All candidates will be required to take a Glider exam , which is on recorded video and may be reviewed by the client , prior to ...

Full Stack Java Developer

O Fallon, MO · On-site

$60K - $135K/yr

Job Title: Full Stack Java Developer City: O Fallon State/Province: Missouri Posting Start Date: 7/3/26 Wipro Limited (NYSE: WIT, BSE: 507685, NSE: WIPRO) is a leading technology services and ...

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 ...

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Java Developer information

See O Fallon, MO salary details

$14

$53

$72

How much do java developer jobs pay per hour?

As of Jul 9, 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.

Is Java developer still in demand?

Java developers remain in high demand due to the widespread use of Java in enterprise applications, Android development, and backend systems. Skills in frameworks like Spring and knowledge of cloud environments enhance job prospects, which are expected to continue growing as technology evolves.

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.

Is Java outdated in 2026?

Java remains a widely used programming language for Java developers in 2026, especially in enterprise applications, Android development, and backend systems. Its ongoing updates, large ecosystem, and strong community support ensure its relevance for many software development roles.

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.

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 is the minimum salary of a Java developer?

The minimum salary for a Java developer varies depending on location, experience, and industry, but entry-level positions typically start around $50,000 to $70,000 annually in many regions. Factors such as proficiency in frameworks like Spring and knowledge of tools like Git can influence starting pay. Entry-level roles may also require basic understanding of object-oriented programming and Java SE fundamentals.

Can I get a Java job with no degree?

Yes, many Java developer roles do not require a formal degree if you have strong programming skills, experience with Java and related tools, and a solid portfolio or certifications. Employers often prioritize practical knowledge and problem-solving ability over formal education for this role.

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.

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.

Are Java developers still in demand?

Java developers remain in high demand due to the widespread use of Java in enterprise applications, Android development, and backend systems. Skills in frameworks like Spring and knowledge of cloud environments enhance job prospects, which are expected to grow as businesses continue to rely on Java-based solutions.

Is Java still useful in 2026?

Java remains a widely used programming language for Java Developers in 2026, especially in enterprise applications, Android development, and backend systems. Its stability, large ecosystem, and ongoing updates ensure continued relevance, with skills in Java, frameworks like Spring, and related tools in demand.

What's the typical salary for Java developers?

The average salary for Java developers varies by experience and location but generally ranges from $70,000 to $120,000 annually. Entry-level positions typically start around $60,000, while experienced developers with specialized skills or certifications can earn over $130,000. Knowledge of frameworks like Spring and proficiency in tools such as Git can influence salary levels.
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Infographic showing various Java Developer job openings in O'Fallon, MO as of July 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 100% In-person job distribution, with an average salary of $110,322 per year, or $53 per hour.

Java Backend Developer

Rootshell Enterprise Technologies, Inc.

Maryland Heights, MO • On-site

$48.75 - $63.25/hr

Full-time

Re-posted 9 days ago


Job description

Key responsibilities:
• Design and develop the applications using Agile Methodology and followed TDD and Scrum.
• Java Programming, documents and maintains web service applications using different software development toolkits.
• Responsible for ensuring code functions and enhancements are successful and compatible with front-end code
• Provide technical advice and be able to identify technical implications regarding development and quality activities.
• Work closely with other developers, product managers, DevOps, and product support engineering teams to deliver development solutions.
• Document workflows and relevant processes to execute continuous improvement plans.
• Anticipate, identify, track and resolve technical issues and risks affecting delivery.
• Understand client business needs and product requirements and translate those needs into system-level architectural properties
Required Skills:
• Familiar with the technical implications of Back End Development Environments.
• Proven experience as a strong Java developer (Spring, Spring Boot, Maven)
• Microservices experience (Spring Boot)
• Secure Code Experience
• RESTful service
• Micro services (Spring Boot)
• Tomcat, Nginx web server
• Very good communication skills
• Needs to be up to date in required technologies
• Able to deliver tasks on time
• Proactive and Collaborative
Good to have skills:
• Telecommunications Industry experience would be a plus
• Understanding of Billing Systems technical implications
• Understanding the technical implications of Full Stack developed platforms
Thanks,
Satish
satish@rootshellinc.com
408 239 4600 Ext.: 5053