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Sr Java J2Ee Developer Jobs in O Fallon, MO (NOW HIRING)

FULL STACK JAVA DEVELOPER

Lake Saint Louis, MO · On-site

$49.75 - $64.25/hr

Design and Develop Java and J2EE-based web applications using Java frameworks as required by ... Sun/ Oracle Certified Java Programmer desirable Best Regards, Kevin Smith | PH: 224-296-3545

... J2EE as core set of technologies. The candidate should be comfortable working across all the tiers in the proposed solution: RDBMS, batch processes, application servers. Job Discription Java ...

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 ... Experience developing applications using Core JAVA, J2EE, SQL Knowledge of design patterns and ...

-UI Developer with ava J2EE

Saint Louis, MO · On-site

$48.50 - $63.25/hr

At least 6 years of implementation experience in Java/J2EE technologies, Spring, Hibernate * At ... At least 4 years of experience in Server side programming using Core Java, J2EE, Java Servlets, JSP ...

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 ... using Core JAVA, J2EE, SQL • Knowledge of design patterns and implementation experience • ...

Senior Java Engineer

Saint Louis, MO

$55.75 - $71/hr

Overview We are looking for a highly skilled Senior Java Engineer to design, develop, and maintain ... Collaborate with cross-functional teams including DevOps, QA, and product to deliver high-quality ...

JAVA Developer

Chesterfield, MO

$50.50 - $65.25/hr

Developing, maintaining and experience migrating Visual Basic/ASP applications to J2EE framework ... Expertise with the Eclipse IDE, and related Java build tools and techniques * Familiarity with ...

Senior Software Engineer -Java

O Fallon, MO · On-site

$82.66 - $110.21/hr

Proficiency with J2EE, Java 8 or higher, JSP, Servlets, Spring 5, Hibernate, and databases such as ... Title Sr Java Developer Location O'Fallon, MO Client Industry Finance Compensation $60-80/hr #J ...

JAVA Engineer

Saint Louis, MO · On-site

$50.25 - $69/hr

... Java & J2EE Strong experience with Java, J2EE, Struts, Spring, JSF, UML, OOAD, Web Services (SOAP/SOA) and multi-tier software design and development and should be comfortable in a Linux shell ...

Java Developer

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

Onsite Sr. Java Developer Location: St. Louis, MO In short, I require ::-- Java , spring boot , microservices and AWS ( cloud is compulsory , if not AWS , any other cloud will work). Responsibilities ...

Java Architect

Saint Louis, MO · On-site

$61.25 - $82.75/hr

Job Responsibilities Manage and mentor a team of developers and analysts throughout the entire ... with J2EE architecture and design Preference for some experience with core Java, J2EE, and DI ...

.Net Developer

Saint Louis, MO · On-site

$47 - $62/hr

Preferred At least 4 years of experience in in Java, J2EE Skills At least 4 years of experience in ... Experience in Server side programming using Java Servlets, JSP, JDBC, JavaBeans, EJB, log4J.

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 ...

Showing results 21-40

Sr Java J2Ee Developer information

See O Fallon, MO salary details

$10

$58

$80

How much do sr java j2ee developer jobs pay per hour?

As of Sep 7, 2026, the average hourly pay for sr java j2ee developer in O'Fallon, MO is $58.77, according to ZipRecruiter salary data. Most workers in this role earn between $51.49 and $65.67 per hour, depending on experience, location, and employer.

What is a Sr Java J2EE developer?

Sr Java J2EE Developers are experienced software engineers who specialize in building, deploying, and maintaining enterprise-level applications using Java and the Java 2 Platform, Enterprise Edition (J2EE). They work with technologies like Servlets, JSP, EJB, and frameworks such as Spring and Hibernate to develop scalable, secure, and reliable software solutions. Senior developers often lead teams, design system architecture, and ensure best coding practices are followed throughout the software development lifecycle.

What are some common challenges Sr Java J2EE developers face when working on large-scale enterprise applications?

Sr Java J2EE Developers often encounter challenges such as managing application scalability, ensuring code maintainability, and integrating with legacy systems. Large-scale projects typically involve coordinating with cross-functional teams, which requires effective communication and collaboration skills. Additionally, staying updated with evolving frameworks and best practices is crucial to address performance bottlenecks and maintain security. Proactively addressing these challenges is essential for delivering robust, high-quality enterprise solutions.

What are the key skills and qualifications needed to thrive as a Sr Java J2EE developer, and why are they important?

To thrive as a Sr Java J2EE Developer, you need advanced proficiency in Java programming, expertise in J2EE frameworks, and a bachelor's degree in computer science or a related field. Familiarity with tools like Spring, Hibernate, Maven, RESTful APIs, and version control systems such as Git is typically required. Strong problem-solving abilities, effective communication, and leadership skills make a developer stand out in this senior role. These competencies are crucial for designing robust enterprise applications, collaborating with cross-functional teams, and leading projects to successful completion.

What is the difference between Sr Java J2Ee Developer vs Java Software Engineer?

AspectSr Java J2Ee DeveloperJava Software Engineer
Required CredentialsBachelor's in CS or related, Java certifications often preferredBachelor's in CS or related, Java certifications beneficial
Work EnvironmentDevelops enterprise applications, often in large teamsDesigns and develops Java applications, may work in teams or individually
Industry UsageCommon in finance, healthcare, and enterprise sectorsUsed across various industries including tech, finance, and startups
Search & Comparison IntentOften compared for seniority, responsibilities, and skillsCompared for roles, skills, and career progression

While both roles involve Java development, Sr Java J2Ee Developers typically focus on enterprise-level applications with more experience and responsibilities, whereas Java Software Engineers may work on a broader range of Java projects, including both enterprise and consumer applications.

What are popular job titles related to Sr Java J2Ee Developer jobs in O'Fallon, MO?

For Sr Java J2Ee Developer jobs in O'Fallon, MO, the most frequently searched job titles are:

What cities near O'Fallon, MO are hiring for Sr Java J2Ee Developer jobs?

Cities near O'Fallon, MO with the most Sr Java J2Ee Developer job openings:

Infographic showing various Sr Java J2Ee Developer job openings in O'Fallon, MO as of June 2026, with employment types broken down into 54% Full Time, and 46% Contract. Highlights an 93% In-person, and 7% Hybrid job distribution, with an average salary of $122,250 per year, or $58.8 per hour.

W2 Role -Senior Java Developer-O'Fallon MO - Day 1 onsite

Triunity Software

O Fallon, MO • On-site

$53.50 - $68.25/hr

Other

Posted 6 days ago


Job description

Senior Java Developer

O’Fallon MO – Day 1 onsite

12+ months Contract

Locals highly Preferred – or nearby states – Candidates from CA / TX and all will not be considered

Essential Technical Skills

  • 8+ years Development and debugging of J2EE RESTful Web Services and Web Applications
  • Strong database experience (Oracle, SQL scripting)
  • Spring Framework, including Spring Boot
  • Maven for build and dependency management
  • Unit testing using JUnit and Mockito
  • Application servers: JBoss and/or Apache Tomcat
  • Version control using Git

________________________________________
Desirable Skills

  • Experience with containerized environments (Kubernetes, OpenShift, Cloud Foundry)
  • Integration frameworks such as Apache Camel or Spring Integration
  • Experience with monitoring service performance
  • Frontend exposure to Angular 2+ or modern SPA frameworks such as React + Redux
  • Knowledge of HTML5, ES5/ES6, TypeScript, SASS, and CSS3

Triunity Software logo

About Triunity Software

Sourced by ZipRecruiter

Triunity is a Product Development, Staff Augmentation, and Consulting Services company providing solutions and services in North America. We provide IT services and technology solutions to various business verticals like Healthcare, Pharma, Banking, Finance, etc. Our goal is to develop a long-term partnership with businesses and help them get a competitive advantage by providing IT infrastructure and software platforms.

Industry

It services

Company size

11 - 50 Employees

Headquarters location

Iselin, NJ, US

Year founded

2021